105 lines
3.6 KiB
LLVM
105 lines
3.6 KiB
LLVM
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; 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(i16)
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define void @test_loop_add_rec_used_in_adjacent_loop(i8 %len.n, i16 %a) {
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; CHECK-LABEL: @test_loop_add_rec_used_in_adjacent_loop(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[LEN:%.*]] = zext i8 [[LEN_N:%.*]] to i16
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; CHECK-NEXT: [[LEN_NEG:%.*]] = icmp uge i16 [[LEN]], [[A:%.*]]
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; CHECK-NEXT: br i1 [[LEN_NEG]], label [[EXIT:%.*]], label [[LOOP_1_PH:%.*]]
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; CHECK: loop.1.ph:
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; CHECK-NEXT: br label [[LOOP_1:%.*]]
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; CHECK: loop.1:
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; CHECK-NEXT: [[IV:%.*]] = phi i16 [ 0, [[LOOP_1_PH]] ], [ [[IV_NEXT:%.*]], [[LOOP_1]] ]
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; CHECK-NEXT: [[C_0:%.*]] = icmp eq i16 [[IV]], [[A]]
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; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i16 [[IV]], 1
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; CHECK-NEXT: br i1 [[C_0]], label [[LOOP_2_HEADER:%.*]], label [[LOOP_1]]
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; CHECK: loop.2.header:
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; CHECK-NEXT: [[IV_2:%.*]] = phi i16 [ [[IV]], [[LOOP_1]] ], [ [[IV]], [[LOOP_2_LATCH:%.*]] ]
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; CHECK-NEXT: [[C:%.*]] = icmp eq i16 [[IV_2]], [[LEN]]
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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 i16 [[IV_2]], [[A]]
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; CHECK-NEXT: [[AND:%.*]] = and i1 true, [[T_2]]
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; CHECK-NEXT: br i1 [[AND]], label [[LOOP_2_LATCH]], label [[EXIT]]
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; CHECK: loop.2.latch:
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; CHECK-NEXT: call void @use(i16 [[IV_2]])
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; CHECK-NEXT: br label [[LOOP_2_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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%len = zext i8 %len.n to i16
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%len.neg = icmp uge i16 %len, %a
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br i1 %len.neg, label %exit, label %loop.1.ph
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loop.1.ph:
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br label %loop.1
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loop.1:
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%iv = phi i16 [ 0, %loop.1.ph ], [ %iv.next, %loop.1 ]
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%c.0 = icmp eq i16 %iv, %a
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%iv.next = add nuw nsw i16 %iv, 1
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br i1 %c.0, label %loop.2.header, label %loop.1
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loop.2.header:
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%iv.2 = phi i16 [ %iv, %loop.1 ], [ %iv, %loop.2.latch ]
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%c = icmp eq i16 %iv.2, %len
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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 i16 %iv.2, 0
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%t.2 = icmp ult i16 %iv.2, %a
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%and = and i1 %t.1, %t.2
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br i1 %and, label %loop.2.latch, label %exit
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loop.2.latch:
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call void @use(i16 %iv.2)
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br label %loop.2.header
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exit:
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ret void
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}
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define void @test_adjacen_loops_pointer_iv_crash() {
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; CHECK-LABEL: @test_adjacen_loops_pointer_iv_crash(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[LOOP_1:%.*]]
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; CHECK: loop.1:
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; CHECK-NEXT: [[IV_1:%.*]] = phi ptr [ null, [[ENTRY:%.*]] ], [ [[IV_1_NEXT:%.*]], [[LOOP_1]] ]
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; CHECK-NEXT: [[IV_1_NEXT]] = getelementptr ptr, ptr [[IV_1]], i32 1
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; CHECK-NEXT: br i1 false, label [[LOOP_1]], label [[LOOP_2:%.*]]
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; CHECK: loop.2:
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; CHECK-NEXT: [[__FIRST_ADDR_1_LCSSA:%.*]] = phi ptr [ [[IV_1]], [[LOOP_1]] ], [ [[IV_1]], [[LOOP_2_LATCH:%.*]] ]
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; CHECK-NEXT: [[CMP7:%.*]] = icmp eq ptr [[__FIRST_ADDR_1_LCSSA]], null
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; CHECK-NEXT: br i1 [[CMP7]], label [[IF_THEN8:%.*]], label [[LOOP_2_LATCH]]
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; CHECK: if.then8:
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; CHECK-NEXT: ret void
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; CHECK: loop.2.latch:
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; CHECK-NEXT: br label [[LOOP_2]]
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;
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entry:
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br label %loop.1
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loop.1:
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%iv.1 = phi ptr [ null, %entry ], [ %iv.1.next, %loop.1 ]
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%iv.1.next = getelementptr ptr, ptr %iv.1, i32 1
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br i1 false, label %loop.1, label %loop.2
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loop.2:
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%__first.addr.1.lcssa = phi ptr [ %iv.1, %loop.1 ], [ %iv.1, %loop.2.latch ]
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%cmp7 = icmp eq ptr %__first.addr.1.lcssa, null
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br i1 %cmp7, label %if.then8, label %loop.2.latch
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if.then8: ; preds = %do.body
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ret void
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loop.2.latch:
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br label %loop.2
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}
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