289 lines
8.5 KiB
LLVM
289 lines
8.5 KiB
LLVM
|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
|
||
|
|
; RUN: opt -passes=constraint-elimination -S %s | FileCheck %s
|
||
|
|
|
||
|
|
target datalayout = "e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
|
||
|
|
|
||
|
|
|
||
|
|
declare void @use(i8)
|
||
|
|
declare void @use.i1(i1)
|
||
|
|
declare void @llvm.assume(i1)
|
||
|
|
declare i1 @cond()
|
||
|
|
|
||
|
|
define void @test_iv_wraps_1(i8 %len.n, i8 %a) {
|
||
|
|
; CHECK-LABEL: @test_iv_wraps_1(
|
||
|
|
; CHECK-NEXT: loop.ph:
|
||
|
|
; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
|
||
|
|
; CHECK: loop.header:
|
||
|
|
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ -1, [[LOOP_PH:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
|
||
|
|
; CHECK-NEXT: [[C:%.*]] = icmp eq i8 [[IV]], 1
|
||
|
|
; CHECK-NEXT: br i1 [[C]], label [[EXIT:%.*]], label [[LOOP_LATCH]]
|
||
|
|
; CHECK: loop.latch:
|
||
|
|
; CHECK-NEXT: [[T_1:%.*]] = icmp uge i8 [[IV]], -1
|
||
|
|
; CHECK-NEXT: call void @use.i1(i1 [[T_1]])
|
||
|
|
; CHECK-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1
|
||
|
|
; CHECK-NEXT: br label [[LOOP_HEADER]]
|
||
|
|
; CHECK: exit:
|
||
|
|
; CHECK-NEXT: ret void
|
||
|
|
;
|
||
|
|
loop.ph:
|
||
|
|
br label %loop.header
|
||
|
|
|
||
|
|
loop.header:
|
||
|
|
%iv = phi i8 [ 255, %loop.ph ], [ %iv.next, %loop.latch ]
|
||
|
|
%c = icmp eq i8 %iv, 1
|
||
|
|
br i1 %c, label %exit, label %loop.latch
|
||
|
|
|
||
|
|
loop.latch:
|
||
|
|
%t.1 = icmp uge i8 %iv, 255
|
||
|
|
call void @use.i1(i1 %t.1)
|
||
|
|
%iv.next = add i8 %iv, 1
|
||
|
|
br label %loop.header
|
||
|
|
|
||
|
|
exit:
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
define void @test_iv_nuw_nsw_1_uge_start(i8 %len.n, i8 %a) {
|
||
|
|
; CHECK-LABEL: @test_iv_nuw_nsw_1_uge_start(
|
||
|
|
; CHECK-NEXT: loop.ph:
|
||
|
|
; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
|
||
|
|
; CHECK: loop.header:
|
||
|
|
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ -1, [[LOOP_PH:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
|
||
|
|
; CHECK-NEXT: [[C:%.*]] = icmp eq i8 [[IV]], 1
|
||
|
|
; CHECK-NEXT: br i1 [[C]], label [[EXIT:%.*]], label [[FOR_BODY:%.*]]
|
||
|
|
; CHECK: for.body:
|
||
|
|
; CHECK-NEXT: [[C_2:%.*]] = call i1 @cond()
|
||
|
|
; CHECK-NEXT: br i1 [[C_2]], label [[LOOP_LATCH]], label [[EXIT]]
|
||
|
|
; CHECK: loop.latch:
|
||
|
|
; CHECK-NEXT: call void @use.i1(i1 true)
|
||
|
|
; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i8 [[IV]], 1
|
||
|
|
; CHECK-NEXT: br label [[LOOP_HEADER]]
|
||
|
|
; CHECK: exit:
|
||
|
|
; CHECK-NEXT: ret void
|
||
|
|
;
|
||
|
|
loop.ph:
|
||
|
|
br label %loop.header
|
||
|
|
|
||
|
|
loop.header:
|
||
|
|
%iv = phi i8 [ 255, %loop.ph ], [ %iv.next, %loop.latch ]
|
||
|
|
%c = icmp eq i8 %iv, 1
|
||
|
|
br i1 %c, label %exit, label %for.body
|
||
|
|
|
||
|
|
for.body:
|
||
|
|
%c.2 = call i1 @cond()
|
||
|
|
br i1 %c.2, label %loop.latch, label %exit
|
||
|
|
|
||
|
|
loop.latch:
|
||
|
|
%t.1 = icmp uge i8 %iv, 255
|
||
|
|
call void @use.i1(i1 %t.1)
|
||
|
|
%iv.next = add nsw nuw i8 %iv, 1
|
||
|
|
br label %loop.header
|
||
|
|
|
||
|
|
exit:
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
define void @test_iv_nuw_nsw_2_uge_start(i8 %len.n, i8 %a) {
|
||
|
|
; CHECK-LABEL: @test_iv_nuw_nsw_2_uge_start(
|
||
|
|
; CHECK-NEXT: loop.ph:
|
||
|
|
; CHECK-NEXT: [[START:%.*]] = add i8 -2, 1
|
||
|
|
; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
|
||
|
|
; CHECK: loop.header:
|
||
|
|
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ [[START]], [[LOOP_PH:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
|
||
|
|
; CHECK-NEXT: [[C:%.*]] = icmp eq i8 [[IV]], 1
|
||
|
|
; CHECK-NEXT: br i1 [[C]], label [[EXIT:%.*]], label [[FOR_BODY:%.*]]
|
||
|
|
; CHECK: for.body:
|
||
|
|
; CHECK-NEXT: [[C_2:%.*]] = call i1 @cond()
|
||
|
|
; CHECK-NEXT: br i1 [[C_2]], label [[LOOP_LATCH]], label [[EXIT]]
|
||
|
|
; CHECK: loop.latch:
|
||
|
|
; CHECK-NEXT: call void @use.i1(i1 true)
|
||
|
|
; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i8 [[IV]], 1
|
||
|
|
; CHECK-NEXT: br label [[LOOP_HEADER]]
|
||
|
|
; CHECK: exit:
|
||
|
|
; CHECK-NEXT: ret void
|
||
|
|
;
|
||
|
|
loop.ph:
|
||
|
|
%start = add i8 254, 1
|
||
|
|
br label %loop.header
|
||
|
|
|
||
|
|
loop.header:
|
||
|
|
%iv = phi i8 [ %start, %loop.ph ], [ %iv.next, %loop.latch ]
|
||
|
|
%c = icmp eq i8 %iv, 1
|
||
|
|
br i1 %c, label %exit, label %for.body
|
||
|
|
|
||
|
|
for.body:
|
||
|
|
%c.2 = call i1 @cond()
|
||
|
|
br i1 %c.2, label %loop.latch, label %exit
|
||
|
|
|
||
|
|
loop.latch:
|
||
|
|
%t.1 = icmp uge i8 %iv, 255
|
||
|
|
call void @use.i1(i1 %t.1)
|
||
|
|
%iv.next = add nsw nuw i8 %iv, 1
|
||
|
|
br label %loop.header
|
||
|
|
|
||
|
|
exit:
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
define void @test_iv_nsw_nuw_1_ult_end(i8 %len.n, i8 %a) {
|
||
|
|
; CHECK-LABEL: @test_iv_nsw_nuw_1_ult_end(
|
||
|
|
; CHECK-NEXT: loop.ph:
|
||
|
|
; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
|
||
|
|
; CHECK: loop.header:
|
||
|
|
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ -2, [[LOOP_PH:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
|
||
|
|
; CHECK-NEXT: [[C:%.*]] = icmp eq i8 [[IV]], 1
|
||
|
|
; CHECK-NEXT: br i1 [[C]], label [[EXIT:%.*]], label [[FOR_BODY:%.*]]
|
||
|
|
; CHECK: for.body:
|
||
|
|
; CHECK-NEXT: [[C_2:%.*]] = call i1 @cond()
|
||
|
|
; CHECK-NEXT: br i1 [[C_2]], label [[LOOP_LATCH]], label [[EXIT]]
|
||
|
|
; CHECK: loop.latch:
|
||
|
|
; CHECK-NEXT: call void @use.i1(i1 false)
|
||
|
|
; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i8 [[IV]], 1
|
||
|
|
; CHECK-NEXT: br label [[LOOP_HEADER]]
|
||
|
|
; CHECK: exit:
|
||
|
|
; CHECK-NEXT: ret void
|
||
|
|
;
|
||
|
|
loop.ph:
|
||
|
|
br label %loop.header
|
||
|
|
|
||
|
|
loop.header:
|
||
|
|
%iv = phi i8 [ 254, %loop.ph ], [ %iv.next, %loop.latch ]
|
||
|
|
%c = icmp eq i8 %iv, 1
|
||
|
|
br i1 %c, label %exit, label %for.body
|
||
|
|
|
||
|
|
for.body:
|
||
|
|
%c.2 = call i1 @cond()
|
||
|
|
br i1 %c.2, label %loop.latch, label %exit
|
||
|
|
|
||
|
|
loop.latch:
|
||
|
|
%t.1 = icmp ult i8 %iv, 1
|
||
|
|
call void @use.i1(i1 %t.1)
|
||
|
|
%iv.next = add nsw nuw i8 %iv, 1
|
||
|
|
br label %loop.header
|
||
|
|
|
||
|
|
exit:
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
define void @test_iv_nsw_nuw_2_ult_end(i8 %len.n, i8 %a, i8 %b) {
|
||
|
|
; CHECK-LABEL: @test_iv_nsw_nuw_2_ult_end(
|
||
|
|
; CHECK-NEXT: loop.ph:
|
||
|
|
; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
|
||
|
|
; CHECK: loop.header:
|
||
|
|
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ [[A:%.*]], [[LOOP_PH:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
|
||
|
|
; CHECK-NEXT: [[C:%.*]] = icmp eq i8 [[IV]], [[B:%.*]]
|
||
|
|
; CHECK-NEXT: br i1 [[C]], label [[EXIT:%.*]], label [[FOR_BODY:%.*]]
|
||
|
|
; CHECK: for.body:
|
||
|
|
; CHECK-NEXT: [[C_2:%.*]] = call i1 @cond()
|
||
|
|
; CHECK-NEXT: br i1 [[C_2]], label [[LOOP_LATCH]], label [[EXIT]]
|
||
|
|
; CHECK: loop.latch:
|
||
|
|
; CHECK-NEXT: [[T_1:%.*]] = icmp ult i8 [[IV]], [[B]]
|
||
|
|
; CHECK-NEXT: call void @use.i1(i1 [[T_1]])
|
||
|
|
; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i8 [[IV]], 1
|
||
|
|
; CHECK-NEXT: br label [[LOOP_HEADER]]
|
||
|
|
; CHECK: exit:
|
||
|
|
; CHECK-NEXT: ret void
|
||
|
|
;
|
||
|
|
loop.ph:
|
||
|
|
br label %loop.header
|
||
|
|
|
||
|
|
loop.header:
|
||
|
|
%iv = phi i8 [ %a, %loop.ph ], [ %iv.next, %loop.latch ]
|
||
|
|
%c = icmp eq i8 %iv, %b
|
||
|
|
br i1 %c, label %exit, label %for.body
|
||
|
|
|
||
|
|
for.body:
|
||
|
|
%c.2 = call i1 @cond()
|
||
|
|
br i1 %c.2, label %loop.latch, label %exit
|
||
|
|
|
||
|
|
loop.latch:
|
||
|
|
%t.1 = icmp ult i8 %iv, %b
|
||
|
|
call void @use.i1(i1 %t.1)
|
||
|
|
%iv.next = add nsw nuw i8 %iv, 1
|
||
|
|
br label %loop.header
|
||
|
|
|
||
|
|
exit:
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
define void @test_iv_nsw_nuw_3_ult_start_var(i8 %len.n, i8 %a, i8 %b) {
|
||
|
|
; CHECK-LABEL: @test_iv_nsw_nuw_3_ult_start_var(
|
||
|
|
; CHECK-NEXT: loop.ph:
|
||
|
|
; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
|
||
|
|
; CHECK: loop.header:
|
||
|
|
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ [[A:%.*]], [[LOOP_PH:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
|
||
|
|
; CHECK-NEXT: [[C:%.*]] = icmp eq i8 [[IV]], [[B:%.*]]
|
||
|
|
; CHECK-NEXT: br i1 [[C]], label [[EXIT:%.*]], label [[FOR_BODY:%.*]]
|
||
|
|
; CHECK: for.body:
|
||
|
|
; CHECK-NEXT: [[C_2:%.*]] = call i1 @cond()
|
||
|
|
; CHECK-NEXT: br i1 [[C_2]], label [[LOOP_LATCH]], label [[EXIT]]
|
||
|
|
; CHECK: loop.latch:
|
||
|
|
; CHECK-NEXT: call void @use.i1(i1 false)
|
||
|
|
; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i8 [[IV]], 1
|
||
|
|
; CHECK-NEXT: br label [[LOOP_HEADER]]
|
||
|
|
; CHECK: exit:
|
||
|
|
; CHECK-NEXT: ret void
|
||
|
|
;
|
||
|
|
loop.ph:
|
||
|
|
br label %loop.header
|
||
|
|
|
||
|
|
loop.header:
|
||
|
|
%iv = phi i8 [ %a, %loop.ph ], [ %iv.next, %loop.latch ]
|
||
|
|
%c = icmp eq i8 %iv, %b
|
||
|
|
br i1 %c, label %exit, label %for.body
|
||
|
|
|
||
|
|
for.body:
|
||
|
|
%c.2 = call i1 @cond()
|
||
|
|
br i1 %c.2, label %loop.latch, label %exit
|
||
|
|
|
||
|
|
loop.latch:
|
||
|
|
%t.1 = icmp ult i8 %iv, %a
|
||
|
|
call void @use.i1(i1 %t.1)
|
||
|
|
%iv.next = add nsw nuw i8 %iv, 1
|
||
|
|
br label %loop.header
|
||
|
|
|
||
|
|
exit:
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
define void @test_iv_nsw_nuw_inc_2_ult_start_var(i8 %len.n, i8 %a, i8 %b) {
|
||
|
|
; CHECK-LABEL: @test_iv_nsw_nuw_inc_2_ult_start_var(
|
||
|
|
; CHECK-NEXT: loop.ph:
|
||
|
|
; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
|
||
|
|
; CHECK: loop.header:
|
||
|
|
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ [[A:%.*]], [[LOOP_PH:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
|
||
|
|
; CHECK-NEXT: [[C:%.*]] = icmp eq i8 [[IV]], [[B:%.*]]
|
||
|
|
; CHECK-NEXT: br i1 [[C]], label [[EXIT:%.*]], label [[FOR_BODY:%.*]]
|
||
|
|
; CHECK: for.body:
|
||
|
|
; CHECK-NEXT: [[C_2:%.*]] = call i1 @cond()
|
||
|
|
; CHECK-NEXT: br i1 [[C_2]], label [[LOOP_LATCH]], label [[EXIT]]
|
||
|
|
; CHECK: loop.latch:
|
||
|
|
; CHECK-NEXT: call void @use.i1(i1 false)
|
||
|
|
; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i8 [[IV]], 2
|
||
|
|
; CHECK-NEXT: br label [[LOOP_HEADER]]
|
||
|
|
; CHECK: exit:
|
||
|
|
; CHECK-NEXT: ret void
|
||
|
|
;
|
||
|
|
loop.ph:
|
||
|
|
br label %loop.header
|
||
|
|
|
||
|
|
loop.header:
|
||
|
|
%iv = phi i8 [ %a, %loop.ph ], [ %iv.next, %loop.latch ]
|
||
|
|
%c = icmp eq i8 %iv, %b
|
||
|
|
br i1 %c, label %exit, label %for.body
|
||
|
|
|
||
|
|
for.body:
|
||
|
|
%c.2 = call i1 @cond()
|
||
|
|
br i1 %c.2, label %loop.latch, label %exit
|
||
|
|
|
||
|
|
loop.latch:
|
||
|
|
%t.1 = icmp ult i8 %iv, %a
|
||
|
|
call void @use.i1(i1 %t.1)
|
||
|
|
%iv.next = add nsw nuw i8 %iv, 2
|
||
|
|
br label %loop.header
|
||
|
|
|
||
|
|
exit:
|
||
|
|
ret void
|
||
|
|
}
|