1086 lines
39 KiB
LLVM
1086 lines
39 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -passes=constraint-elimination -S %s | FileCheck %s
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target datalayout = "e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
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declare void @use(ptr)
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declare void @use.i1(i1)
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declare void @llvm.assume(i1)
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declare i1 @cond()
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define void @test_monotonic_ptr_iv_inc_1_eq_to_uge(ptr %start, i16 %len) {
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; CHECK-LABEL: @test_monotonic_ptr_iv_inc_1_eq_to_uge(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[UPPER:%.*]] = getelementptr inbounds i32, ptr [[START:%.*]], i16 [[LEN:%.*]]
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; CHECK-NEXT: [[LEN_NEG:%.*]] = icmp slt i16 [[LEN]], 0
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; CHECK-NEXT: br i1 [[LEN_NEG]], label [[EXIT:%.*]], label [[LOOP_PH:%.*]]
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; CHECK: loop.ph:
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; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
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; CHECK: loop.header:
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; CHECK-NEXT: [[PTR_IV:%.*]] = phi ptr [ [[START]], [[LOOP_PH]] ], [ [[PTR_IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
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; CHECK-NEXT: [[C:%.*]] = icmp eq ptr [[PTR_IV]], [[UPPER]]
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; CHECK-NEXT: br i1 [[C]], label [[EXIT]], label [[FOR_BODY:%.*]]
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; CHECK: for.body:
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; CHECK-NEXT: [[AND:%.*]] = and i1 true, true
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; CHECK-NEXT: br i1 [[AND]], label [[LOOP_LATCH]], label [[EXIT]]
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; CHECK: loop.latch:
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; CHECK-NEXT: call void @use(ptr [[PTR_IV]])
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; CHECK-NEXT: [[PTR_IV_NEXT]] = getelementptr inbounds i32, ptr [[PTR_IV]], i16 1
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; CHECK-NEXT: br label [[LOOP_HEADER]]
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; CHECK: exit:
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; CHECK-NEXT: ret void
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;
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entry:
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%upper = getelementptr inbounds i32, ptr %start, i16 %len
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%len.neg = icmp slt i16 %len, 0
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br i1 %len.neg, label %exit, label %loop.ph
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loop.ph:
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br label %loop.header
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loop.header:
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%ptr.iv = phi ptr [ %start, %loop.ph ], [ %ptr.iv.next, %loop.latch ]
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%c = icmp eq ptr %ptr.iv, %upper
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br i1 %c, label %exit, label %for.body
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for.body:
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%t.1 = icmp uge ptr %ptr.iv, %start
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%t.2 = icmp ult ptr %ptr.iv, %upper
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%and = and i1 %t.1, %t.2
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br i1 %and, label %loop.latch, label %exit
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loop.latch:
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call void @use(ptr %ptr.iv)
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%ptr.iv.next = getelementptr inbounds i32, ptr %ptr.iv, i16 1
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br label %loop.header
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exit:
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ret void
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}
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define void @test_monotonic_ptr_iv_inc_1_eq_to_uge_incoming_values_reordered(ptr %start, i16 %len) {
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; CHECK-LABEL: @test_monotonic_ptr_iv_inc_1_eq_to_uge_incoming_values_reordered(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[UPPER:%.*]] = getelementptr inbounds i32, ptr [[START:%.*]], i16 [[LEN:%.*]]
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; CHECK-NEXT: [[LEN_NEG:%.*]] = icmp slt i16 [[LEN]], 0
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; CHECK-NEXT: br i1 [[LEN_NEG]], label [[EXIT:%.*]], label [[LOOP_PH:%.*]]
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; CHECK: loop.ph:
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; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
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; CHECK: loop.header:
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; CHECK-NEXT: [[PTR_IV:%.*]] = phi ptr [ [[PTR_IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ], [ [[START]], [[LOOP_PH]] ]
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; CHECK-NEXT: [[C:%.*]] = icmp eq ptr [[PTR_IV]], [[UPPER]]
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; CHECK-NEXT: br i1 [[C]], label [[EXIT]], label [[FOR_BODY:%.*]]
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; CHECK: for.body:
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; CHECK-NEXT: [[AND:%.*]] = and i1 true, true
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; CHECK-NEXT: br i1 [[AND]], label [[LOOP_LATCH]], label [[EXIT]]
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; CHECK: loop.latch:
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; CHECK-NEXT: call void @use(ptr [[PTR_IV]])
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; CHECK-NEXT: [[PTR_IV_NEXT]] = getelementptr inbounds i32, ptr [[PTR_IV]], i16 1
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; CHECK-NEXT: br label [[LOOP_HEADER]]
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; CHECK: exit:
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; CHECK-NEXT: ret void
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;
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entry:
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%upper = getelementptr inbounds i32, ptr %start, i16 %len
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%len.neg = icmp slt i16 %len, 0
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br i1 %len.neg, label %exit, label %loop.ph
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loop.ph:
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br label %loop.header
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loop.header:
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%ptr.iv = phi ptr [ %ptr.iv.next, %loop.latch ], [ %start, %loop.ph ]
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%c = icmp eq ptr %ptr.iv, %upper
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br i1 %c, label %exit, label %for.body
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for.body:
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%t.1 = icmp uge ptr %ptr.iv, %start
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%t.2 = icmp ult ptr %ptr.iv, %upper
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%and = and i1 %t.1, %t.2
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br i1 %and, label %loop.latch, label %exit
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loop.latch:
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call void @use(ptr %ptr.iv)
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%ptr.iv.next = getelementptr inbounds i32, ptr %ptr.iv, i16 1
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br label %loop.header
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exit:
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ret void
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}
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define void @test_monotonic_ptr_iv_inc_1_eq_to_uge_no_preheader(ptr %start, i16 %len) {
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; CHECK-LABEL: @test_monotonic_ptr_iv_inc_1_eq_to_uge_no_preheader(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[UPPER:%.*]] = getelementptr inbounds i32, ptr [[START:%.*]], i16 [[LEN:%.*]]
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; CHECK-NEXT: [[LEN_NEG:%.*]] = icmp slt i16 [[LEN]], 0
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; CHECK-NEXT: br i1 [[LEN_NEG]], label [[EXIT:%.*]], label [[LOOP_HEADER:%.*]]
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; CHECK: loop.header:
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; CHECK-NEXT: [[PTR_IV:%.*]] = phi ptr [ [[START]], [[ENTRY:%.*]] ], [ [[PTR_IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
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; CHECK-NEXT: [[C:%.*]] = icmp eq ptr [[PTR_IV]], [[UPPER]]
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; CHECK-NEXT: br i1 [[C]], label [[EXIT]], label [[FOR_BODY:%.*]]
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; CHECK: for.body:
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; CHECK-NEXT: [[AND:%.*]] = and i1 true, true
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; CHECK-NEXT: br i1 [[AND]], label [[LOOP_LATCH]], label [[EXIT]]
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; CHECK: loop.latch:
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; CHECK-NEXT: call void @use(ptr [[PTR_IV]])
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; CHECK-NEXT: [[PTR_IV_NEXT]] = getelementptr inbounds i32, ptr [[PTR_IV]], i16 1
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; CHECK-NEXT: br label [[LOOP_HEADER]]
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; CHECK: exit:
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; CHECK-NEXT: ret void
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;
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entry:
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%upper = getelementptr inbounds i32, ptr %start, i16 %len
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%len.neg = icmp slt i16 %len, 0
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br i1 %len.neg, label %exit, label %loop.header
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loop.header:
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%ptr.iv = phi ptr [ %start, %entry ], [ %ptr.iv.next, %loop.latch ]
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%c = icmp eq ptr %ptr.iv, %upper
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br i1 %c, label %exit, label %for.body
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for.body:
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%t.1 = icmp uge ptr %ptr.iv, %start
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%t.2 = icmp ult ptr %ptr.iv, %upper
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%and = and i1 %t.1, %t.2
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br i1 %and, label %loop.latch, label %exit
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loop.latch:
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call void @use(ptr %ptr.iv)
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%ptr.iv.next = getelementptr inbounds i32, ptr %ptr.iv, i16 1
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br label %loop.header
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exit:
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ret void
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}
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define void @test_monotonic_ptr_iv_inc_1_different_element_types(ptr %start, i16 %len) {
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; CHECK-LABEL: @test_monotonic_ptr_iv_inc_1_different_element_types(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[UPPER:%.*]] = getelementptr inbounds i32, ptr [[START:%.*]], i16 [[LEN:%.*]]
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; CHECK-NEXT: [[LEN_NEG:%.*]] = icmp slt i16 [[LEN]], 0
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; CHECK-NEXT: br i1 [[LEN_NEG]], label [[EXIT:%.*]], label [[LOOP_PH:%.*]]
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; CHECK: loop.ph:
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; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
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; CHECK: loop.header:
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; CHECK-NEXT: [[PTR_IV:%.*]] = phi ptr [ [[START]], [[LOOP_PH]] ], [ [[PTR_IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
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; CHECK-NEXT: [[C:%.*]] = icmp eq ptr [[PTR_IV]], [[UPPER]]
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; CHECK-NEXT: br i1 [[C]], label [[EXIT]], label [[FOR_BODY:%.*]]
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; CHECK: for.body:
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; CHECK-NEXT: [[AND:%.*]] = and i1 true, true
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; CHECK-NEXT: br i1 [[AND]], label [[LOOP_LATCH]], label [[EXIT]]
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; CHECK: loop.latch:
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; CHECK-NEXT: call void @use(ptr [[PTR_IV]])
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; CHECK-NEXT: [[PTR_IV_NEXT]] = getelementptr inbounds i8, ptr [[PTR_IV]], i16 1
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; CHECK-NEXT: br label [[LOOP_HEADER]]
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; CHECK: exit:
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; CHECK-NEXT: ret void
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;
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entry:
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%upper = getelementptr inbounds i32, ptr %start, i16 %len
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%len.neg = icmp slt i16 %len, 0
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br i1 %len.neg, label %exit, label %loop.ph
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loop.ph:
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br label %loop.header
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loop.header:
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%ptr.iv = phi ptr [ %start, %loop.ph ], [ %ptr.iv.next, %loop.latch ]
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%c = icmp eq ptr %ptr.iv, %upper
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br i1 %c, label %exit, label %for.body
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for.body:
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%t.1 = icmp uge ptr %ptr.iv, %start
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%t.2 = icmp ult ptr %ptr.iv, %upper
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%and = and i1 %t.1, %t.2
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br i1 %and, label %loop.latch, label %exit
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loop.latch:
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call void @use(ptr %ptr.iv)
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%ptr.iv.next = getelementptr inbounds i8, ptr %ptr.iv, i16 1
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br label %loop.header
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exit:
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ret void
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}
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define void @test_monotonic_ptr_iv_inc_1_different_element_types_2(ptr %start, i16 %len) {
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; CHECK-LABEL: @test_monotonic_ptr_iv_inc_1_different_element_types_2(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[UPPER:%.*]] = getelementptr inbounds i8, ptr [[START:%.*]], i16 [[LEN:%.*]]
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; CHECK-NEXT: [[LEN_NEG:%.*]] = icmp slt i16 [[LEN]], 0
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; CHECK-NEXT: br i1 [[LEN_NEG]], label [[EXIT:%.*]], label [[LOOP_PH:%.*]]
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; CHECK: loop.ph:
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; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
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; CHECK: loop.header:
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; CHECK-NEXT: [[PTR_IV:%.*]] = phi ptr [ [[START]], [[LOOP_PH]] ], [ [[PTR_IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
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; CHECK-NEXT: [[C:%.*]] = icmp eq ptr [[PTR_IV]], [[UPPER]]
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; CHECK-NEXT: br i1 [[C]], label [[EXIT]], label [[FOR_BODY:%.*]]
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; CHECK: for.body:
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; CHECK-NEXT: [[T_2:%.*]] = icmp ult ptr [[PTR_IV]], [[UPPER]]
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; CHECK-NEXT: [[AND:%.*]] = and i1 true, [[T_2]]
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; CHECK-NEXT: br i1 [[AND]], label [[LOOP_LATCH]], label [[EXIT]]
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; CHECK: loop.latch:
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; CHECK-NEXT: call void @use(ptr [[PTR_IV]])
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; CHECK-NEXT: [[PTR_IV_NEXT]] = getelementptr inbounds i32, ptr [[PTR_IV]], i16 1
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; CHECK-NEXT: br label [[LOOP_HEADER]]
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; CHECK: exit:
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; CHECK-NEXT: ret void
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;
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entry:
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%upper = getelementptr inbounds i8, ptr %start, i16 %len
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%len.neg = icmp slt i16 %len, 0
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br i1 %len.neg, label %exit, label %loop.ph
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loop.ph:
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br label %loop.header
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loop.header:
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%ptr.iv = phi ptr [ %start, %loop.ph ], [ %ptr.iv.next, %loop.latch ]
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%c = icmp eq ptr %ptr.iv, %upper
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br i1 %c, label %exit, label %for.body
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for.body:
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%t.1 = icmp uge ptr %ptr.iv, %start
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%t.2 = icmp ult ptr %ptr.iv, %upper
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%and = and i1 %t.1, %t.2
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br i1 %and, label %loop.latch, label %exit
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loop.latch:
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call void @use(ptr %ptr.iv)
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%ptr.iv.next = getelementptr inbounds i32, ptr %ptr.iv, i16 1
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br label %loop.header
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exit:
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ret void
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}
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define void @test_monotonic_ptr_iv_inc_1_gep_step_size_i8_unknown_end_ptr(ptr %start, ptr %end) {
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; CHECK-LABEL: @test_monotonic_ptr_iv_inc_1_gep_step_size_i8_unknown_end_ptr(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[START_ULT_END:%.*]] = icmp uge ptr [[START:%.*]], [[END:%.*]]
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; CHECK-NEXT: br i1 [[START_ULT_END]], label [[EXIT:%.*]], label [[LOOP_PH:%.*]]
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; CHECK: loop.ph:
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; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
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; CHECK: loop.header:
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; CHECK-NEXT: [[PTR_IV:%.*]] = phi ptr [ [[START]], [[LOOP_PH]] ], [ [[PTR_IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
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; CHECK-NEXT: [[C:%.*]] = icmp eq ptr [[PTR_IV]], [[END]]
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; CHECK-NEXT: br i1 [[C]], label [[EXIT]], label [[FOR_BODY:%.*]]
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; CHECK: for.body:
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; CHECK-NEXT: [[AND:%.*]] = and i1 true, true
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; CHECK-NEXT: br i1 [[AND]], label [[LOOP_LATCH]], label [[EXIT]]
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; CHECK: loop.latch:
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; CHECK-NEXT: call void @use(ptr [[PTR_IV]])
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; CHECK-NEXT: [[PTR_IV_NEXT]] = getelementptr inbounds i8, ptr [[PTR_IV]], i16 1
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; CHECK-NEXT: br label [[LOOP_HEADER]]
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; CHECK: exit:
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; CHECK-NEXT: ret void
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;
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entry:
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%start.ult.end = icmp uge ptr %start, %end
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br i1 %start.ult.end, label %exit, label %loop.ph
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loop.ph:
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br label %loop.header
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loop.header:
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%ptr.iv = phi ptr [ %start, %loop.ph ], [ %ptr.iv.next, %loop.latch ]
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%c = icmp eq ptr %ptr.iv, %end
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br i1 %c, label %exit, label %for.body
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for.body:
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%t.1 = icmp uge ptr %ptr.iv, %start
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%t.2 = icmp ult ptr %ptr.iv, %end
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%and = and i1 %t.1, %t.2
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br i1 %and, label %loop.latch, label %exit
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loop.latch:
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call void @use(ptr %ptr.iv)
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%ptr.iv.next = getelementptr inbounds i8, ptr %ptr.iv, i16 1
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br label %loop.header
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exit:
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ret void
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}
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define void @test_monotonic_ptr_iv_inc_1_gep_step_size_i32_unknown_end_ptr(ptr %start, ptr %end) {
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; CHECK-LABEL: @test_monotonic_ptr_iv_inc_1_gep_step_size_i32_unknown_end_ptr(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[START_ULT_END:%.*]] = icmp uge ptr [[START:%.*]], [[END:%.*]]
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; CHECK-NEXT: br i1 [[START_ULT_END]], label [[EXIT:%.*]], label [[LOOP_PH:%.*]]
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; CHECK: loop.ph:
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; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
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; CHECK: loop.header:
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; CHECK-NEXT: [[PTR_IV:%.*]] = phi ptr [ [[START]], [[LOOP_PH]] ], [ [[PTR_IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
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; CHECK-NEXT: [[C:%.*]] = icmp eq ptr [[PTR_IV]], [[END]]
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; CHECK-NEXT: br i1 [[C]], label [[EXIT]], label [[FOR_BODY:%.*]]
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; CHECK: for.body:
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; CHECK-NEXT: [[T_2:%.*]] = icmp ult ptr [[PTR_IV]], [[END]]
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; CHECK-NEXT: [[AND:%.*]] = and i1 true, [[T_2]]
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; CHECK-NEXT: br i1 [[AND]], label [[LOOP_LATCH]], label [[EXIT]]
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; CHECK: loop.latch:
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; CHECK-NEXT: call void @use(ptr [[PTR_IV]])
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; CHECK-NEXT: [[PTR_IV_NEXT]] = getelementptr inbounds i32, ptr [[PTR_IV]], i16 1
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; CHECK-NEXT: br label [[LOOP_HEADER]]
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; CHECK: exit:
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; CHECK-NEXT: ret void
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;
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entry:
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%start.ult.end = icmp uge ptr %start, %end
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br i1 %start.ult.end, label %exit, label %loop.ph
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loop.ph:
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br label %loop.header
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loop.header:
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%ptr.iv = phi ptr [ %start, %loop.ph ], [ %ptr.iv.next, %loop.latch ]
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%c = icmp eq ptr %ptr.iv, %end
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br i1 %c, label %exit, label %for.body
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for.body:
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%t.1 = icmp uge ptr %ptr.iv, %start
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%t.2 = icmp ult ptr %ptr.iv, %end
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%and = and i1 %t.1, %t.2
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br i1 %and, label %loop.latch, label %exit
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loop.latch:
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call void @use(ptr %ptr.iv)
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%ptr.iv.next = getelementptr inbounds i32, ptr %ptr.iv, i16 1
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br label %loop.header
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exit:
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ret void
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}
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define void @test_ptr_iv_upper_may_be_less_than_start(ptr %start, i16 %len) {
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; CHECK-LABEL: @test_ptr_iv_upper_may_be_less_than_start(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[UPPER:%.*]] = getelementptr inbounds i32, ptr [[START:%.*]], i16 [[LEN:%.*]]
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; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
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; CHECK: loop.header:
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; CHECK-NEXT: [[PTR_IV:%.*]] = phi ptr [ [[START]], [[ENTRY:%.*]] ], [ [[PTR_IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
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; CHECK-NEXT: [[C:%.*]] = icmp eq ptr [[PTR_IV]], [[UPPER]]
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; CHECK-NEXT: br i1 [[C]], label [[EXIT:%.*]], label [[FOR_BODY:%.*]]
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; CHECK: for.body:
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; CHECK-NEXT: [[C_2:%.*]] = icmp ult ptr [[PTR_IV]], [[UPPER]]
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; CHECK-NEXT: [[AND:%.*]] = and i1 true, [[C_2]]
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; CHECK-NEXT: br i1 [[AND]], label [[LOOP_LATCH]], label [[EXIT]]
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; CHECK: loop.latch:
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; CHECK-NEXT: call void @use(ptr [[PTR_IV]])
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; CHECK-NEXT: [[PTR_IV_NEXT]] = getelementptr inbounds i32, ptr [[PTR_IV]], i16 1
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; CHECK-NEXT: br label [[LOOP_HEADER]]
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; CHECK: exit:
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; CHECK-NEXT: ret void
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;
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entry:
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%upper = getelementptr inbounds i32, ptr %start, i16 %len
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br label %loop.header
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loop.header:
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%ptr.iv = phi ptr [ %start, %entry ], [ %ptr.iv.next, %loop.latch ]
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%c = icmp eq ptr %ptr.iv, %upper
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br i1 %c, label %exit, label %for.body
|
|
|
|
for.body:
|
|
%c.1 = icmp uge ptr %ptr.iv, %start
|
|
%c.2 = icmp ult ptr %ptr.iv, %upper
|
|
%and = and i1 %c.1, %c.2
|
|
br i1 %and, label %loop.latch, label %exit
|
|
|
|
loop.latch:
|
|
call void @use(ptr %ptr.iv)
|
|
%ptr.iv.next = getelementptr inbounds i32, ptr %ptr.iv, i16 1
|
|
br label %loop.header
|
|
|
|
exit:
|
|
ret void
|
|
}
|
|
|
|
define void @test_no_ptr_iv_step_inst_doesnt_use_phi(ptr %start, ptr %p, i16 %len) {
|
|
; CHECK-LABEL: @test_no_ptr_iv_step_inst_doesnt_use_phi(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: [[UPPER:%.*]] = getelementptr inbounds i32, ptr [[START:%.*]], i16 [[LEN:%.*]]
|
|
; CHECK-NEXT: [[LEN_NEG:%.*]] = icmp slt i16 [[LEN]], 0
|
|
; CHECK-NEXT: br i1 [[LEN_NEG]], label [[EXIT:%.*]], label [[LOOP_PH:%.*]]
|
|
; CHECK: loop.ph:
|
|
; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
|
|
; CHECK: loop.header:
|
|
; CHECK-NEXT: [[PTR_IV:%.*]] = phi ptr [ [[START]], [[LOOP_PH]] ], [ [[PTR_IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
|
|
; CHECK-NEXT: [[C:%.*]] = icmp eq ptr [[PTR_IV]], [[UPPER]]
|
|
; CHECK-NEXT: br i1 [[C]], label [[EXIT]], label [[FOR_BODY:%.*]]
|
|
; CHECK: for.body:
|
|
; CHECK-NEXT: [[T_1:%.*]] = icmp uge ptr [[PTR_IV]], [[START]]
|
|
; CHECK-NEXT: [[T_2:%.*]] = icmp ult ptr [[PTR_IV]], [[UPPER]]
|
|
; CHECK-NEXT: [[AND:%.*]] = and i1 [[T_1]], [[T_2]]
|
|
; CHECK-NEXT: br i1 [[AND]], label [[LOOP_LATCH]], label [[EXIT]]
|
|
; CHECK: loop.latch:
|
|
; CHECK-NEXT: call void @use(ptr [[PTR_IV]])
|
|
; CHECK-NEXT: [[PTR_IV_NEXT]] = getelementptr inbounds i32, ptr [[P:%.*]], i16 1
|
|
; CHECK-NEXT: br label [[LOOP_HEADER]]
|
|
; CHECK: exit:
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
entry:
|
|
%upper = getelementptr inbounds i32, ptr %start, i16 %len
|
|
%len.neg = icmp slt i16 %len, 0
|
|
br i1 %len.neg, label %exit, label %loop.ph
|
|
|
|
loop.ph:
|
|
br label %loop.header
|
|
|
|
loop.header:
|
|
%ptr.iv = phi ptr [ %start, %loop.ph ], [ %ptr.iv.next, %loop.latch ]
|
|
%c = icmp eq ptr %ptr.iv, %upper
|
|
br i1 %c, label %exit, label %for.body
|
|
|
|
for.body:
|
|
%t.1 = icmp uge ptr %ptr.iv, %start
|
|
%t.2 = icmp ult ptr %ptr.iv, %upper
|
|
%and = and i1 %t.1, %t.2
|
|
br i1 %and, label %loop.latch, label %exit
|
|
|
|
loop.latch:
|
|
call void @use(ptr %ptr.iv)
|
|
%ptr.iv.next = getelementptr inbounds i32, ptr %p, i16 1
|
|
br label %loop.header
|
|
|
|
exit:
|
|
ret void
|
|
}
|
|
|
|
define void @test_no_ptr_iv_step_inst_doesnt_use_phi_2(ptr %start, ptr %end, i16 %len) {
|
|
; CHECK-LABEL: @test_no_ptr_iv_step_inst_doesnt_use_phi_2(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: [[UPPER:%.*]] = getelementptr inbounds float, ptr [[START:%.*]], i16 [[LEN:%.*]]
|
|
; CHECK-NEXT: [[LEN_NEG:%.*]] = icmp slt i16 [[LEN]], 0
|
|
; CHECK-NEXT: br i1 [[LEN_NEG]], label [[EXIT:%.*]], label [[LOOP_PH:%.*]]
|
|
; CHECK: loop.ph:
|
|
; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
|
|
; CHECK: loop.header:
|
|
; CHECK-NEXT: [[PTR_IV:%.*]] = phi ptr [ [[START]], [[LOOP_PH]] ], [ [[PTR_IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
|
|
; CHECK-NEXT: [[PTR_IV_2:%.*]] = phi ptr [ [[END:%.*]], [[LOOP_PH]] ], [ [[PTR_IV_NEXT]], [[LOOP_LATCH]] ]
|
|
; CHECK-NEXT: [[C:%.*]] = icmp eq ptr [[PTR_IV]], [[UPPER]]
|
|
; CHECK-NEXT: br i1 [[C]], label [[EXIT]], label [[LOOP_NEXT:%.*]]
|
|
; CHECK: loop.next:
|
|
; CHECK-NEXT: [[T_1:%.*]] = icmp uge ptr [[PTR_IV]], [[START]]
|
|
; CHECK-NEXT: [[T_2:%.*]] = icmp ult ptr [[PTR_IV]], [[UPPER]]
|
|
; CHECK-NEXT: [[AND:%.*]] = and i1 [[T_1]], [[T_2]]
|
|
; CHECK-NEXT: br i1 [[AND]], label [[LOOP_LATCH]], label [[EXIT]]
|
|
; CHECK: loop.latch:
|
|
; CHECK-NEXT: call void @use(ptr [[PTR_IV]])
|
|
; CHECK-NEXT: [[PTR_IV_NEXT]] = getelementptr inbounds float, ptr [[PTR_IV_2]], i16 1
|
|
; CHECK-NEXT: br label [[LOOP_HEADER]]
|
|
; CHECK: exit:
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
entry:
|
|
%upper = getelementptr inbounds float, ptr %start, i16 %len
|
|
%len.neg = icmp slt i16 %len, 0
|
|
br i1 %len.neg, label %exit, label %loop.ph
|
|
|
|
loop.ph:
|
|
br label %loop.header
|
|
|
|
loop.header:
|
|
%ptr.iv = phi ptr [ %start, %loop.ph ], [ %ptr.iv.next, %loop.latch ]
|
|
%ptr.iv.2 = phi ptr [ %end, %loop.ph ], [ %ptr.iv.next, %loop.latch ]
|
|
%c = icmp eq ptr %ptr.iv, %upper
|
|
br i1 %c, label %exit, label %loop.next
|
|
|
|
loop.next:
|
|
%t.1 = icmp uge ptr %ptr.iv, %start
|
|
%t.2 = icmp ult ptr %ptr.iv, %upper
|
|
%and = and i1 %t.1, %t.2
|
|
br i1 %and, label %loop.latch, label %exit
|
|
|
|
loop.latch:
|
|
call void @use(ptr %ptr.iv)
|
|
%ptr.iv.next = getelementptr inbounds float, ptr %ptr.iv.2, i16 1
|
|
br label %loop.header
|
|
|
|
exit:
|
|
ret void
|
|
}
|
|
|
|
define void @test_no_ptr_iv_different_start(ptr %start, ptr %p, i16 %len) {
|
|
; CHECK-LABEL: @test_no_ptr_iv_different_start(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: [[UPPER:%.*]] = getelementptr inbounds i32, ptr [[START:%.*]], i16 [[LEN:%.*]]
|
|
; CHECK-NEXT: [[LEN_NEG:%.*]] = icmp slt i16 [[LEN]], 0
|
|
; CHECK-NEXT: br i1 [[LEN_NEG]], label [[EXIT:%.*]], label [[LOOP_PH:%.*]]
|
|
; CHECK: loop.ph:
|
|
; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
|
|
; CHECK: loop.header:
|
|
; CHECK-NEXT: [[PTR_IV:%.*]] = phi ptr [ [[P:%.*]], [[LOOP_PH]] ], [ [[PTR_IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
|
|
; CHECK-NEXT: [[C:%.*]] = icmp eq ptr [[PTR_IV]], [[UPPER]]
|
|
; CHECK-NEXT: br i1 [[C]], label [[EXIT]], label [[FOR_BODY:%.*]]
|
|
; CHECK: for.body:
|
|
; CHECK-NEXT: [[C_1:%.*]] = icmp uge ptr [[PTR_IV]], [[START]]
|
|
; CHECK-NEXT: [[C_2:%.*]] = icmp ult ptr [[PTR_IV]], [[UPPER]]
|
|
; CHECK-NEXT: [[AND:%.*]] = and i1 [[C_1]], [[C_2]]
|
|
; CHECK-NEXT: br i1 [[AND]], label [[LOOP_LATCH]], label [[EXIT]]
|
|
; CHECK: loop.latch:
|
|
; CHECK-NEXT: call void @use(ptr [[PTR_IV]])
|
|
; CHECK-NEXT: [[PTR_IV_NEXT]] = getelementptr inbounds i32, ptr [[PTR_IV]], i16 1
|
|
; CHECK-NEXT: br label [[LOOP_HEADER]]
|
|
; CHECK: exit:
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
entry:
|
|
%upper = getelementptr inbounds i32, ptr %start, i16 %len
|
|
%len.neg = icmp slt i16 %len, 0
|
|
br i1 %len.neg, label %exit, label %loop.ph
|
|
|
|
loop.ph:
|
|
br label %loop.header
|
|
|
|
loop.header:
|
|
%ptr.iv = phi ptr [ %p, %loop.ph ], [ %ptr.iv.next, %loop.latch ]
|
|
%c = icmp eq ptr %ptr.iv, %upper
|
|
br i1 %c, label %exit, label %for.body
|
|
|
|
for.body:
|
|
%c.1 = icmp uge ptr %ptr.iv, %start
|
|
%c.2 = icmp ult ptr %ptr.iv, %upper
|
|
%and = and i1 %c.1, %c.2
|
|
br i1 %and, label %loop.latch, label %exit
|
|
|
|
loop.latch:
|
|
call void @use(ptr %ptr.iv)
|
|
%ptr.iv.next = getelementptr inbounds i32, ptr %ptr.iv, i16 1
|
|
br label %loop.header
|
|
|
|
exit:
|
|
ret void
|
|
}
|
|
|
|
define void @test_ptr_iv_not_inbounds(ptr %start, i16 %len) {
|
|
; CHECK-LABEL: @test_ptr_iv_not_inbounds(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: [[UPPER:%.*]] = getelementptr inbounds i32, ptr [[START:%.*]], i16 [[LEN:%.*]]
|
|
; CHECK-NEXT: [[LEN_NEG:%.*]] = icmp slt i16 [[LEN]], 0
|
|
; CHECK-NEXT: br i1 [[LEN_NEG]], label [[EXIT:%.*]], label [[LOOP_PH:%.*]]
|
|
; CHECK: loop.ph:
|
|
; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
|
|
; CHECK: loop.header:
|
|
; CHECK-NEXT: [[PTR_IV:%.*]] = phi ptr [ [[START]], [[LOOP_PH]] ], [ [[PTR_IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
|
|
; CHECK-NEXT: [[C:%.*]] = icmp eq ptr [[PTR_IV]], [[UPPER]]
|
|
; CHECK-NEXT: br i1 [[C]], label [[EXIT]], label [[FOR_BODY:%.*]]
|
|
; CHECK: for.body:
|
|
; CHECK-NEXT: [[AND:%.*]] = and i1 true, true
|
|
; CHECK-NEXT: br i1 [[AND]], label [[LOOP_LATCH]], label [[EXIT]]
|
|
; CHECK: loop.latch:
|
|
; CHECK-NEXT: call void @use(ptr [[PTR_IV]])
|
|
; CHECK-NEXT: [[PTR_IV_NEXT]] = getelementptr i32, ptr [[PTR_IV]], i16 1
|
|
; CHECK-NEXT: br label [[LOOP_HEADER]]
|
|
; CHECK: exit:
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
entry:
|
|
%upper = getelementptr inbounds i32, ptr %start, i16 %len
|
|
%len.neg = icmp slt i16 %len, 0
|
|
br i1 %len.neg, label %exit, label %loop.ph
|
|
|
|
loop.ph:
|
|
br label %loop.header
|
|
|
|
loop.header:
|
|
%ptr.iv = phi ptr [ %start, %loop.ph ], [ %ptr.iv.next, %loop.latch ]
|
|
%c = icmp eq ptr %ptr.iv, %upper
|
|
br i1 %c, label %exit, label %for.body
|
|
|
|
for.body:
|
|
%c.1 = icmp uge ptr %ptr.iv, %start
|
|
%c.2 = icmp ult ptr %ptr.iv, %upper
|
|
%and = and i1 %c.1, %c.2
|
|
br i1 %and, label %loop.latch, label %exit
|
|
|
|
loop.latch:
|
|
call void @use(ptr %ptr.iv)
|
|
%ptr.iv.next = getelementptr i32, ptr %ptr.iv, i16 1
|
|
br label %loop.header
|
|
|
|
exit:
|
|
ret void
|
|
}
|
|
|
|
define void @test_var_step_not_monotonic(ptr %start, i16 %len, i16 %step) {
|
|
; CHECK-LABEL: @test_var_step_not_monotonic(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: [[UPPER:%.*]] = getelementptr inbounds i32, ptr [[START:%.*]], i16 [[LEN:%.*]]
|
|
; CHECK-NEXT: [[LEN_NEG:%.*]] = icmp slt i16 [[LEN]], 0
|
|
; CHECK-NEXT: br i1 [[LEN_NEG]], label [[EXIT:%.*]], label [[LOOP_PH:%.*]]
|
|
; CHECK: loop.ph:
|
|
; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
|
|
; CHECK: loop.header:
|
|
; CHECK-NEXT: [[PTR_IV:%.*]] = phi ptr [ [[START]], [[LOOP_PH]] ], [ [[PTR_IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
|
|
; CHECK-NEXT: [[C:%.*]] = icmp eq ptr [[PTR_IV]], [[UPPER]]
|
|
; CHECK-NEXT: br i1 [[C]], label [[EXIT]], label [[FOR_BODY:%.*]]
|
|
; CHECK: for.body:
|
|
; CHECK-NEXT: [[C_1:%.*]] = icmp uge ptr [[PTR_IV]], [[START]]
|
|
; CHECK-NEXT: [[C_2:%.*]] = icmp ult ptr [[PTR_IV]], [[UPPER]]
|
|
; CHECK-NEXT: [[AND:%.*]] = and i1 [[C_1]], [[C_2]]
|
|
; CHECK-NEXT: br i1 [[AND]], label [[LOOP_LATCH]], label [[EXIT]]
|
|
; CHECK: loop.latch:
|
|
; CHECK-NEXT: call void @use(ptr [[PTR_IV]])
|
|
; CHECK-NEXT: [[PTR_IV_NEXT]] = getelementptr inbounds i32, ptr [[PTR_IV]], i16 [[STEP:%.*]]
|
|
; CHECK-NEXT: br label [[LOOP_HEADER]]
|
|
; CHECK: exit:
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
entry:
|
|
%upper = getelementptr inbounds i32, ptr %start, i16 %len
|
|
%len.neg = icmp slt i16 %len, 0
|
|
br i1 %len.neg, label %exit, label %loop.ph
|
|
|
|
loop.ph:
|
|
br label %loop.header
|
|
|
|
loop.header:
|
|
%ptr.iv = phi ptr [ %start, %loop.ph ], [ %ptr.iv.next, %loop.latch ]
|
|
%c = icmp eq ptr %ptr.iv, %upper
|
|
br i1 %c, label %exit, label %for.body
|
|
|
|
for.body:
|
|
%c.1 = icmp uge ptr %ptr.iv, %start
|
|
%c.2 = icmp ult ptr %ptr.iv, %upper
|
|
%and = and i1 %c.1, %c.2
|
|
br i1 %and, label %loop.latch, label %exit
|
|
|
|
loop.latch:
|
|
call void @use(ptr %ptr.iv)
|
|
%ptr.iv.next = getelementptr inbounds i32, ptr %ptr.iv, i16 %step
|
|
br label %loop.header
|
|
|
|
exit:
|
|
ret void
|
|
}
|
|
|
|
define void @test_monotonic_ptr_iv_step_neg_1(ptr %start, i16 %len) {
|
|
; CHECK-LABEL: @test_monotonic_ptr_iv_step_neg_1(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: [[UPPER:%.*]] = getelementptr inbounds i32, ptr [[START:%.*]], i16 [[LEN:%.*]]
|
|
; CHECK-NEXT: [[LEN_NEG:%.*]] = icmp slt i16 [[LEN]], 0
|
|
; CHECK-NEXT: br i1 [[LEN_NEG]], label [[EXIT:%.*]], label [[LOOP_PH:%.*]]
|
|
; CHECK: loop.ph:
|
|
; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
|
|
; CHECK: loop.header:
|
|
; CHECK-NEXT: [[PTR_IV:%.*]] = phi ptr [ [[START]], [[LOOP_PH]] ], [ [[PTR_IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
|
|
; CHECK-NEXT: [[C:%.*]] = icmp eq ptr [[PTR_IV]], [[UPPER]]
|
|
; CHECK-NEXT: br i1 [[C]], label [[EXIT]], label [[FOR_BODY:%.*]]
|
|
; CHECK: for.body:
|
|
; CHECK-NEXT: [[C_1:%.*]] = icmp uge ptr [[PTR_IV]], [[START]]
|
|
; CHECK-NEXT: [[C_2:%.*]] = icmp ult ptr [[PTR_IV]], [[UPPER]]
|
|
; CHECK-NEXT: [[AND:%.*]] = and i1 [[C_1]], [[C_2]]
|
|
; CHECK-NEXT: br i1 [[AND]], label [[LOOP_LATCH]], label [[EXIT]]
|
|
; CHECK: loop.latch:
|
|
; CHECK-NEXT: call void @use(ptr [[PTR_IV]])
|
|
; CHECK-NEXT: [[PTR_IV_NEXT]] = getelementptr inbounds i32, ptr [[PTR_IV]], i16 -1
|
|
; CHECK-NEXT: br label [[LOOP_HEADER]]
|
|
; CHECK: exit:
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
entry:
|
|
%upper = getelementptr inbounds i32, ptr %start, i16 %len
|
|
%len.neg = icmp slt i16 %len, 0
|
|
br i1 %len.neg, label %exit, label %loop.ph
|
|
|
|
loop.ph:
|
|
br label %loop.header
|
|
|
|
loop.header:
|
|
%ptr.iv = phi ptr [ %start, %loop.ph ], [ %ptr.iv.next, %loop.latch ]
|
|
%c = icmp eq ptr %ptr.iv, %upper
|
|
br i1 %c, label %exit, label %for.body
|
|
|
|
for.body:
|
|
%c.1 = icmp uge ptr %ptr.iv, %start
|
|
%c.2 = icmp ult ptr %ptr.iv, %upper
|
|
%and = and i1 %c.1, %c.2
|
|
br i1 %and, label %loop.latch, label %exit
|
|
|
|
loop.latch:
|
|
call void @use(ptr %ptr.iv)
|
|
%ptr.iv.next = getelementptr inbounds i32, ptr %ptr.iv, i16 -1
|
|
br label %loop.header
|
|
|
|
exit:
|
|
ret void
|
|
}
|
|
|
|
define void @test_monotonic_ptr_iv_step_sign_unknown(ptr %start, i16 %len, i16 %step) {
|
|
; CHECK-LABEL: @test_monotonic_ptr_iv_step_sign_unknown(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: [[UPPER:%.*]] = getelementptr inbounds i32, ptr [[START:%.*]], i16 [[LEN:%.*]]
|
|
; CHECK-NEXT: [[LEN_NEG:%.*]] = icmp slt i16 [[LEN]], 0
|
|
; CHECK-NEXT: br i1 [[LEN_NEG]], label [[EXIT:%.*]], label [[LOOP_PH:%.*]]
|
|
; CHECK: loop.ph:
|
|
; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
|
|
; CHECK: loop.header:
|
|
; CHECK-NEXT: [[PTR_IV:%.*]] = phi ptr [ [[START]], [[LOOP_PH]] ], [ [[PTR_IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
|
|
; CHECK-NEXT: [[C:%.*]] = icmp eq ptr [[PTR_IV]], [[UPPER]]
|
|
; CHECK-NEXT: br i1 [[C]], label [[EXIT]], label [[FOR_BODY:%.*]]
|
|
; CHECK: for.body:
|
|
; CHECK-NEXT: [[C_1:%.*]] = icmp uge ptr [[PTR_IV]], [[START]]
|
|
; CHECK-NEXT: [[C_2:%.*]] = icmp ult ptr [[PTR_IV]], [[UPPER]]
|
|
; CHECK-NEXT: [[AND:%.*]] = and i1 [[C_1]], [[C_2]]
|
|
; CHECK-NEXT: br i1 [[AND]], label [[LOOP_LATCH]], label [[EXIT]]
|
|
; CHECK: loop.latch:
|
|
; CHECK-NEXT: call void @use(ptr [[PTR_IV]])
|
|
; CHECK-NEXT: [[PTR_IV_NEXT]] = getelementptr inbounds i32, ptr [[PTR_IV]], i16 [[STEP:%.*]]
|
|
; CHECK-NEXT: br label [[LOOP_HEADER]]
|
|
; CHECK: exit:
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
entry:
|
|
%upper = getelementptr inbounds i32, ptr %start, i16 %len
|
|
%len.neg = icmp slt i16 %len, 0
|
|
br i1 %len.neg, label %exit, label %loop.ph
|
|
|
|
loop.ph:
|
|
br label %loop.header
|
|
|
|
loop.header:
|
|
%ptr.iv = phi ptr [ %start, %loop.ph ], [ %ptr.iv.next, %loop.latch ]
|
|
%c = icmp eq ptr %ptr.iv, %upper
|
|
br i1 %c, label %exit, label %for.body
|
|
|
|
for.body:
|
|
%c.1 = icmp uge ptr %ptr.iv, %start
|
|
%c.2 = icmp ult ptr %ptr.iv, %upper
|
|
%and = and i1 %c.1, %c.2
|
|
br i1 %and, label %loop.latch, label %exit
|
|
|
|
loop.latch:
|
|
call void @use(ptr %ptr.iv)
|
|
%ptr.iv.next = getelementptr inbounds i32, ptr %ptr.iv, i16 %step
|
|
br label %loop.header
|
|
|
|
exit:
|
|
ret void
|
|
}
|
|
|
|
define void @test_monotonic_ptr_iv_step_sign_positive_through_assume(ptr %start, i16 %len, i16 %step) {
|
|
; CHECK-LABEL: @test_monotonic_ptr_iv_step_sign_positive_through_assume(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: [[STEP_POS:%.*]] = icmp sge i16 [[STEP:%.*]], 0
|
|
; CHECK-NEXT: call void @llvm.assume(i1 [[STEP_POS]])
|
|
; CHECK-NEXT: [[UPPER:%.*]] = getelementptr inbounds i32, ptr [[START:%.*]], i16 [[LEN:%.*]]
|
|
; CHECK-NEXT: [[LEN_NEG:%.*]] = icmp slt i16 [[LEN]], 0
|
|
; CHECK-NEXT: br i1 [[LEN_NEG]], label [[EXIT:%.*]], label [[LOOP_PH:%.*]]
|
|
; CHECK: loop.ph:
|
|
; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
|
|
; CHECK: loop.header:
|
|
; CHECK-NEXT: [[PTR_IV:%.*]] = phi ptr [ [[START]], [[LOOP_PH]] ], [ [[PTR_IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
|
|
; CHECK-NEXT: [[C:%.*]] = icmp eq ptr [[PTR_IV]], [[UPPER]]
|
|
; CHECK-NEXT: br i1 [[C]], label [[EXIT]], label [[FOR_BODY:%.*]]
|
|
; CHECK: for.body:
|
|
; CHECK-NEXT: [[T_1:%.*]] = icmp uge ptr [[PTR_IV]], [[START]]
|
|
; CHECK-NEXT: [[T_2:%.*]] = icmp ult ptr [[PTR_IV]], [[UPPER]]
|
|
; CHECK-NEXT: [[AND:%.*]] = and i1 [[T_1]], [[T_2]]
|
|
; CHECK-NEXT: br i1 [[AND]], label [[LOOP_LATCH]], label [[EXIT]]
|
|
; CHECK: loop.latch:
|
|
; CHECK-NEXT: call void @use(ptr [[PTR_IV]])
|
|
; CHECK-NEXT: [[PTR_IV_NEXT]] = getelementptr inbounds i32, ptr [[PTR_IV]], i16 [[STEP]]
|
|
; CHECK-NEXT: br label [[LOOP_HEADER]]
|
|
; CHECK: exit:
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
entry:
|
|
%step.pos = icmp sge i16 %step, 0
|
|
call void @llvm.assume(i1 %step.pos)
|
|
%upper = getelementptr inbounds i32, ptr %start, i16 %len
|
|
%len.neg = icmp slt i16 %len, 0
|
|
br i1 %len.neg, label %exit, label %loop.ph
|
|
|
|
loop.ph:
|
|
br label %loop.header
|
|
|
|
loop.header:
|
|
%ptr.iv = phi ptr [ %start, %loop.ph ], [ %ptr.iv.next, %loop.latch ]
|
|
%c = icmp eq ptr %ptr.iv, %upper
|
|
br i1 %c, label %exit, label %for.body
|
|
|
|
for.body:
|
|
%t.1 = icmp uge ptr %ptr.iv, %start
|
|
%t.2 = icmp ult ptr %ptr.iv, %upper
|
|
%and = and i1 %t.1, %t.2
|
|
br i1 %and, label %loop.latch, label %exit
|
|
|
|
loop.latch:
|
|
call void @use(ptr %ptr.iv)
|
|
%ptr.iv.next = getelementptr inbounds i32, ptr %ptr.iv, i16 %step
|
|
br label %loop.header
|
|
|
|
exit:
|
|
ret void
|
|
}
|
|
|
|
define void @test_monotonic_ptr_iv_step_sign_negative_through_assume(ptr %start, i16 %len, i16 %step) {
|
|
; CHECK-LABEL: @test_monotonic_ptr_iv_step_sign_negative_through_assume(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: [[STEP_POS:%.*]] = icmp sle i16 [[STEP:%.*]], 0
|
|
; CHECK-NEXT: call void @llvm.assume(i1 [[STEP_POS]])
|
|
; CHECK-NEXT: [[UPPER:%.*]] = getelementptr inbounds i32, ptr [[START:%.*]], i16 [[LEN:%.*]]
|
|
; CHECK-NEXT: [[LEN_NEG:%.*]] = icmp slt i16 [[LEN]], 0
|
|
; CHECK-NEXT: br i1 [[LEN_NEG]], label [[EXIT:%.*]], label [[LOOP_PH:%.*]]
|
|
; CHECK: loop.ph:
|
|
; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
|
|
; CHECK: loop.header:
|
|
; CHECK-NEXT: [[PTR_IV:%.*]] = phi ptr [ [[START]], [[LOOP_PH]] ], [ [[PTR_IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
|
|
; CHECK-NEXT: [[C:%.*]] = icmp eq ptr [[PTR_IV]], [[UPPER]]
|
|
; CHECK-NEXT: br i1 [[C]], label [[EXIT]], label [[FOR_BODY:%.*]]
|
|
; CHECK: for.body:
|
|
; CHECK-NEXT: [[C_1:%.*]] = icmp uge ptr [[PTR_IV]], [[START]]
|
|
; CHECK-NEXT: [[C_2:%.*]] = icmp ult ptr [[PTR_IV]], [[UPPER]]
|
|
; CHECK-NEXT: [[AND:%.*]] = and i1 [[C_1]], [[C_2]]
|
|
; CHECK-NEXT: br i1 [[AND]], label [[LOOP_LATCH]], label [[EXIT]]
|
|
; CHECK: loop.latch:
|
|
; CHECK-NEXT: call void @use(ptr [[PTR_IV]])
|
|
; CHECK-NEXT: [[PTR_IV_NEXT]] = getelementptr inbounds i32, ptr [[PTR_IV]], i16 [[STEP]]
|
|
; CHECK-NEXT: br label [[LOOP_HEADER]]
|
|
; CHECK: exit:
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
entry:
|
|
%step.pos = icmp sle i16 %step, 0
|
|
call void @llvm.assume(i1 %step.pos)
|
|
%upper = getelementptr inbounds i32, ptr %start, i16 %len
|
|
%len.neg = icmp slt i16 %len, 0
|
|
br i1 %len.neg, label %exit, label %loop.ph
|
|
|
|
loop.ph:
|
|
br label %loop.header
|
|
|
|
loop.header:
|
|
%ptr.iv = phi ptr [ %start, %loop.ph ], [ %ptr.iv.next, %loop.latch ]
|
|
%c = icmp eq ptr %ptr.iv, %upper
|
|
br i1 %c, label %exit, label %for.body
|
|
|
|
for.body:
|
|
%c.1 = icmp uge ptr %ptr.iv, %start
|
|
%c.2 = icmp ult ptr %ptr.iv, %upper
|
|
%and = and i1 %c.1, %c.2
|
|
br i1 %and, label %loop.latch, label %exit
|
|
|
|
loop.latch:
|
|
call void @use(ptr %ptr.iv)
|
|
%ptr.iv.next = getelementptr inbounds i32, ptr %ptr.iv, i16 %step
|
|
br label %loop.header
|
|
|
|
exit:
|
|
ret void
|
|
}
|
|
|
|
define void @test_monotonic_ptr_iv_inc_2(ptr %start, i16 %len) {
|
|
; CHECK-LABEL: @test_monotonic_ptr_iv_inc_2(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: [[UPPER:%.*]] = getelementptr inbounds i32, ptr [[START:%.*]], i16 [[LEN:%.*]]
|
|
; CHECK-NEXT: [[LEN_NEG:%.*]] = icmp slt i16 [[LEN]], 0
|
|
; CHECK-NEXT: br i1 [[LEN_NEG]], label [[EXIT:%.*]], label [[LOOP_PH:%.*]]
|
|
; CHECK: loop.ph:
|
|
; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
|
|
; CHECK: loop.header:
|
|
; CHECK-NEXT: [[PTR_IV:%.*]] = phi ptr [ [[START]], [[LOOP_PH]] ], [ [[PTR_IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
|
|
; CHECK-NEXT: [[C:%.*]] = icmp eq ptr [[PTR_IV]], [[UPPER]]
|
|
; CHECK-NEXT: br i1 [[C]], label [[EXIT]], label [[FOR_BODY:%.*]]
|
|
; CHECK: for.body:
|
|
; CHECK-NEXT: [[T_2:%.*]] = icmp ult ptr [[PTR_IV]], [[UPPER]]
|
|
; CHECK-NEXT: [[AND:%.*]] = and i1 true, [[T_2]]
|
|
; CHECK-NEXT: br i1 [[AND]], label [[LOOP_LATCH]], label [[EXIT]]
|
|
; CHECK: loop.latch:
|
|
; CHECK-NEXT: call void @use(ptr [[PTR_IV]])
|
|
; CHECK-NEXT: [[PTR_IV_NEXT]] = getelementptr inbounds i32, ptr [[PTR_IV]], i16 2
|
|
; CHECK-NEXT: br label [[LOOP_HEADER]]
|
|
; CHECK: exit:
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
entry:
|
|
%upper = getelementptr inbounds i32, ptr %start, i16 %len
|
|
%len.neg = icmp slt i16 %len, 0
|
|
br i1 %len.neg, label %exit, label %loop.ph
|
|
|
|
loop.ph:
|
|
br label %loop.header
|
|
|
|
loop.header:
|
|
%ptr.iv = phi ptr [ %start, %loop.ph ], [ %ptr.iv.next, %loop.latch ]
|
|
%c = icmp eq ptr %ptr.iv, %upper
|
|
br i1 %c, label %exit, label %for.body
|
|
|
|
for.body:
|
|
%t.1 = icmp uge ptr %ptr.iv, %start
|
|
%t.2 = icmp ult ptr %ptr.iv, %upper
|
|
%and = and i1 %t.1, %t.2
|
|
br i1 %and, label %loop.latch, label %exit
|
|
|
|
loop.latch:
|
|
call void @use(ptr %ptr.iv)
|
|
%ptr.iv.next = getelementptr inbounds i32, ptr %ptr.iv, i16 2
|
|
br label %loop.header
|
|
|
|
exit:
|
|
ret void
|
|
}
|
|
|
|
define void @test_monotonic_ptr_iv_step_2_cond_controls_single_exit(ptr %start, i16 %len) {
|
|
; CHECK-LABEL: @test_monotonic_ptr_iv_step_2_cond_controls_single_exit(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: [[UPPER:%.*]] = getelementptr inbounds i32, ptr [[START:%.*]], i16 [[LEN:%.*]]
|
|
; CHECK-NEXT: [[LEN_NEG:%.*]] = icmp slt i16 [[LEN]], 0
|
|
; CHECK-NEXT: br i1 [[LEN_NEG]], label [[EXIT:%.*]], label [[LOOP_PH:%.*]]
|
|
; CHECK: loop.ph:
|
|
; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
|
|
; CHECK: loop.header:
|
|
; CHECK-NEXT: [[PTR_IV:%.*]] = phi ptr [ [[START]], [[LOOP_PH]] ], [ [[PTR_IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
|
|
; CHECK-NEXT: [[C_1:%.*]] = icmp eq ptr [[PTR_IV]], [[UPPER]]
|
|
; CHECK-NEXT: br i1 [[C_1]], label [[EXIT]], label [[FOR_BODY:%.*]]
|
|
; CHECK: for.body:
|
|
; CHECK-NEXT: [[T_2:%.*]] = icmp ult ptr [[PTR_IV]], [[UPPER]]
|
|
; CHECK-NEXT: [[AND:%.*]] = and i1 true, [[T_2]]
|
|
; CHECK-NEXT: call void @use.i1(i1 [[AND]])
|
|
; CHECK-NEXT: br label [[LOOP_LATCH]]
|
|
; CHECK: loop.latch:
|
|
; CHECK-NEXT: call void @use(ptr [[PTR_IV]])
|
|
; CHECK-NEXT: [[PTR_IV_NEXT]] = getelementptr inbounds i32, ptr [[PTR_IV]], i16 2
|
|
; CHECK-NEXT: br label [[LOOP_HEADER]]
|
|
; CHECK: exit:
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
entry:
|
|
%upper = getelementptr inbounds i32, ptr %start, i16 %len
|
|
%len.neg = icmp slt i16 %len, 0
|
|
br i1 %len.neg, label %exit, label %loop.ph
|
|
|
|
loop.ph:
|
|
br label %loop.header
|
|
|
|
loop.header:
|
|
%ptr.iv = phi ptr [ %start, %loop.ph ], [ %ptr.iv.next, %loop.latch ]
|
|
%c.1 = icmp eq ptr %ptr.iv, %upper
|
|
br i1 %c.1, label %exit, label %for.body
|
|
|
|
for.body:
|
|
%t.1 = icmp uge ptr %ptr.iv, %start
|
|
%t.2 = icmp ult ptr %ptr.iv, %upper
|
|
%and = and i1 %t.1, %t.2
|
|
call void @use.i1(i1 %and)
|
|
br label %loop.latch
|
|
|
|
loop.latch:
|
|
call void @use(ptr %ptr.iv)
|
|
%ptr.iv.next = getelementptr inbounds i32, ptr %ptr.iv, i16 2
|
|
br label %loop.header
|
|
|
|
exit:
|
|
ret void
|
|
}
|
|
|
|
define void @test_monotonic_ptr_iv_inc_1_loop_exits_on_ne(ptr %start, i16 %len) {
|
|
; CHECK-LABEL: @test_monotonic_ptr_iv_inc_1_loop_exits_on_ne(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: [[UPPER:%.*]] = getelementptr inbounds i32, ptr [[START:%.*]], i16 [[LEN:%.*]]
|
|
; CHECK-NEXT: [[LEN_NEG:%.*]] = icmp sge i16 [[LEN]], 0
|
|
; CHECK-NEXT: call void @llvm.assume(i1 [[LEN_NEG]])
|
|
; CHECK-NEXT: br label [[LOOP_PH:%.*]]
|
|
; CHECK: loop.ph:
|
|
; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
|
|
; CHECK: loop.header:
|
|
; CHECK-NEXT: [[PTR_IV:%.*]] = phi ptr [ [[START]], [[LOOP_PH]] ], [ [[PTR_IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
|
|
; CHECK-NEXT: [[C:%.*]] = icmp ne ptr [[PTR_IV]], [[UPPER]]
|
|
; CHECK-NEXT: br i1 [[C]], label [[EXIT:%.*]], label [[FOR_BODY:%.*]]
|
|
; CHECK: for.body:
|
|
; CHECK-NEXT: br label [[LOOP_LATCH]]
|
|
; CHECK: loop.latch:
|
|
; CHECK-NEXT: call void @use(ptr [[PTR_IV]])
|
|
; CHECK-NEXT: [[PTR_IV_NEXT]] = getelementptr inbounds i32, ptr [[PTR_IV]], i16 1
|
|
; CHECK-NEXT: br label [[LOOP_HEADER]]
|
|
; CHECK: exit:
|
|
; CHECK-NEXT: [[C_2:%.*]] = icmp uge ptr [[PTR_IV]], [[START]]
|
|
; CHECK-NEXT: [[C_3:%.*]] = icmp ult ptr [[PTR_IV]], [[UPPER]]
|
|
; CHECK-NEXT: [[AND:%.*]] = and i1 [[C_2]], [[C_3]]
|
|
; CHECK-NEXT: call void @use.i1(i1 [[AND]])
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
entry:
|
|
%upper = getelementptr inbounds i32, ptr %start, i16 %len
|
|
%len.neg = icmp sge i16 %len, 0
|
|
call void @llvm.assume(i1 %len.neg)
|
|
br label %loop.ph
|
|
|
|
loop.ph:
|
|
br label %loop.header
|
|
|
|
loop.header:
|
|
%ptr.iv = phi ptr [ %start, %loop.ph ], [ %ptr.iv.next, %loop.latch ]
|
|
%c = icmp ne ptr %ptr.iv, %upper
|
|
br i1 %c, label %exit, label %for.body
|
|
|
|
for.body:
|
|
br label %loop.latch
|
|
|
|
loop.latch:
|
|
call void @use(ptr %ptr.iv)
|
|
%ptr.iv.next = getelementptr inbounds i32, ptr %ptr.iv, i16 1
|
|
br label %loop.header
|
|
|
|
exit:
|
|
%c.2 = icmp uge ptr %ptr.iv, %start
|
|
%c.3 = icmp ult ptr %ptr.iv, %upper
|
|
%and = and i1 %c.2, %c.3
|
|
call void @use.i1(i1 %and)
|
|
ret void
|
|
}
|
|
|
|
define void @test_monotonic_ptr_iv_inc_1_eq_to_uge_no_inbounds(ptr %start, i16 %len) {
|
|
; CHECK-LABEL: @test_monotonic_ptr_iv_inc_1_eq_to_uge_no_inbounds(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: [[UPPER:%.*]] = getelementptr i32, ptr [[START:%.*]], i16 [[LEN:%.*]]
|
|
; CHECK-NEXT: [[LEN_NEG:%.*]] = icmp slt i16 [[LEN]], 0
|
|
; CHECK-NEXT: br i1 [[LEN_NEG]], label [[EXIT:%.*]], label [[LOOP_PH:%.*]]
|
|
; CHECK: loop.ph:
|
|
; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
|
|
; CHECK: loop.header:
|
|
; CHECK-NEXT: [[PTR_IV:%.*]] = phi ptr [ [[START]], [[LOOP_PH]] ], [ [[PTR_IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
|
|
; CHECK-NEXT: [[C:%.*]] = icmp eq ptr [[PTR_IV]], [[UPPER]]
|
|
; CHECK-NEXT: br i1 [[C]], label [[EXIT]], label [[FOR_BODY:%.*]]
|
|
; CHECK: for.body:
|
|
; CHECK-NEXT: [[T_1:%.*]] = icmp uge ptr [[PTR_IV]], [[START]]
|
|
; CHECK-NEXT: [[T_2:%.*]] = icmp ult ptr [[PTR_IV]], [[UPPER]]
|
|
; CHECK-NEXT: [[AND:%.*]] = and i1 [[T_1]], [[T_2]]
|
|
; CHECK-NEXT: br i1 [[AND]], label [[LOOP_LATCH]], label [[EXIT]]
|
|
; CHECK: loop.latch:
|
|
; CHECK-NEXT: call void @use(ptr [[PTR_IV]])
|
|
; CHECK-NEXT: [[PTR_IV_NEXT]] = getelementptr i32, ptr [[PTR_IV]], i16 1
|
|
; CHECK-NEXT: br label [[LOOP_HEADER]]
|
|
; CHECK: exit:
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
entry:
|
|
%upper = getelementptr i32, ptr %start, i16 %len
|
|
%len.neg = icmp slt i16 %len, 0
|
|
br i1 %len.neg, label %exit, label %loop.ph
|
|
|
|
loop.ph:
|
|
br label %loop.header
|
|
|
|
loop.header:
|
|
%ptr.iv = phi ptr [ %start, %loop.ph ], [ %ptr.iv.next, %loop.latch ]
|
|
%c = icmp eq ptr %ptr.iv, %upper
|
|
br i1 %c, label %exit, label %for.body
|
|
|
|
for.body:
|
|
%t.1 = icmp uge ptr %ptr.iv, %start
|
|
%t.2 = icmp ult ptr %ptr.iv, %upper
|
|
%and = and i1 %t.1, %t.2
|
|
br i1 %and, label %loop.latch, label %exit
|
|
|
|
loop.latch:
|
|
call void @use(ptr %ptr.iv)
|
|
%ptr.iv.next = getelementptr i32, ptr %ptr.iv, i16 1
|
|
br label %loop.header
|
|
|
|
exit:
|
|
ret void
|
|
}
|
|
|