forked from OSchip/llvm-project
159 lines
6.9 KiB
LLVM
159 lines
6.9 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
|
|
; RUN: opt -S -simplifycfg < %s | FileCheck %s
|
|
;
|
|
; The branch in the latch do.cond is conditional by a constant and the
|
|
; conditional branch replaced by an unconditional one.
|
|
; Ensure that the llvm.loop metadata is transferred to the new branch
|
|
; (In for.cond.cleanup after further simplifications).
|
|
;
|
|
; llvm.org/PR50060
|
|
;
|
|
|
|
@n = dso_local global i32 0, align 4
|
|
@C = dso_local global i32 0, align 4
|
|
|
|
; Function Attrs: nounwind
|
|
define dso_local void @_Z6test01v() addrspace(1) #0 {
|
|
; CHECK-LABEL: @_Z6test01v(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: [[J:%.*]] = alloca i32, align 4
|
|
; CHECK-NEXT: [[I:%.*]] = alloca i32, align 4
|
|
; CHECK-NEXT: br label [[DO_BODY:%.*]]
|
|
; CHECK: do.body:
|
|
; CHECK-NEXT: [[TMP0:%.*]] = load i32, i32* @C, align 4, !tbaa [[TBAA2:![0-9]+]]
|
|
; CHECK-NEXT: [[INC:%.*]] = add nsw i32 [[TMP0]], 1
|
|
; CHECK-NEXT: [[TMP1:%.*]] = bitcast i32* [[J]] to i8*
|
|
; CHECK-NEXT: call addrspace(1) void @llvm.lifetime.start.p0i8(i64 4, i8* [[TMP1]]) #[[ATTR2:[0-9]+]]
|
|
; CHECK-NEXT: store i32 0, i32* [[J]], align 4, !tbaa [[TBAA2]]
|
|
; CHECK-NEXT: br label [[FOR_COND:%.*]]
|
|
; CHECK: for.cond:
|
|
; CHECK-NEXT: [[TMP2:%.*]] = load i32, i32* [[J]], align 4, !tbaa [[TBAA2]]
|
|
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[TMP2]], 3
|
|
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY:%.*]], label [[FOR_COND_CLEANUP:%.*]]
|
|
; CHECK: for.cond.cleanup:
|
|
; CHECK-NEXT: [[TMP3:%.*]] = bitcast i32* [[J]] to i8*
|
|
; CHECK-NEXT: call addrspace(1) void @llvm.lifetime.end.p0i8(i64 4, i8* [[TMP3]]) #[[ATTR2]]
|
|
; CHECK-NEXT: br label [[DO_BODY]], !llvm.loop [[LOOP6:![0-9]+]]
|
|
; CHECK: for.body:
|
|
; CHECK-NEXT: store i32 undef, i32* [[I]], align 4
|
|
; CHECK-NEXT: [[TMP4:%.*]] = bitcast i32* [[I]] to i8*
|
|
; CHECK-NEXT: call addrspace(1) void @llvm.lifetime.start.p0i8(i64 4, i8* [[TMP4]]) #[[ATTR2]]
|
|
; CHECK-NEXT: store i32 0, i32* [[I]], align 4, !tbaa [[TBAA2]]
|
|
; CHECK-NEXT: br label [[FOR_COND1:%.*]]
|
|
; CHECK: for.cond1:
|
|
; CHECK-NEXT: [[TMP5:%.*]] = load i32, i32* [[I]], align 4, !tbaa [[TBAA2]]
|
|
; CHECK-NEXT: [[TMP6:%.*]] = load i32, i32* @n, align 4, !tbaa [[TBAA2]]
|
|
; CHECK-NEXT: [[CMP2:%.*]] = icmp slt i32 [[TMP5]], [[TMP6]]
|
|
; CHECK-NEXT: br i1 [[CMP2]], label [[FOR_BODY4:%.*]], label [[FOR_COND_CLEANUP3:%.*]]
|
|
; CHECK: for.cond.cleanup3:
|
|
; CHECK-NEXT: [[TMP7:%.*]] = bitcast i32* [[I]] to i8*
|
|
; CHECK-NEXT: call addrspace(1) void @llvm.lifetime.end.p0i8(i64 4, i8* [[TMP7]]) #[[ATTR2]]
|
|
; CHECK-NEXT: [[TMP8:%.*]] = load i32, i32* [[J]], align 4, !tbaa [[TBAA2]]
|
|
; CHECK-NEXT: [[INC7:%.*]] = add nsw i32 [[TMP8]], 1
|
|
; CHECK-NEXT: store i32 [[INC7]], i32* [[J]], align 4, !tbaa [[TBAA2]]
|
|
; CHECK-NEXT: br label [[FOR_COND]], !llvm.loop [[LOOP8:![0-9]+]]
|
|
; CHECK: for.body4:
|
|
; CHECK-NEXT: [[TMP9:%.*]] = load i32, i32* [[I]], align 4, !tbaa [[TBAA2]]
|
|
; CHECK-NEXT: store volatile i32 [[TMP9]], i32* @C, align 4, !tbaa [[TBAA2]]
|
|
; CHECK-NEXT: [[TMP10:%.*]] = load i32, i32* [[I]], align 4, !tbaa [[TBAA2]]
|
|
; CHECK-NEXT: [[INC5:%.*]] = add nsw i32 [[TMP10]], 1
|
|
; CHECK-NEXT: store i32 [[INC5]], i32* [[I]], align 4, !tbaa [[TBAA2]]
|
|
; CHECK-NEXT: br label [[FOR_COND1]], !llvm.loop [[LOOP11:![0-9]+]]
|
|
;
|
|
entry:
|
|
%j = alloca i32, align 4
|
|
%i = alloca i32, align 4
|
|
br label %do.body
|
|
|
|
do.body: ; preds = %do.cond, %entry
|
|
%0 = load i32, i32* @C, align 4, !tbaa !2
|
|
%inc = add nsw i32 %0, 1
|
|
%1 = bitcast i32* %j to i8*
|
|
call addrspace(1) void @llvm.lifetime.start.p0i8(i64 4, i8* %1) #2
|
|
store i32 0, i32* %j, align 4, !tbaa !2
|
|
br label %for.cond
|
|
|
|
for.cond: ; preds = %for.inc6, %do.body
|
|
%2 = load i32, i32* %j, align 4, !tbaa !2
|
|
%cmp = icmp slt i32 %2, 3
|
|
br i1 %cmp, label %for.body, label %for.cond.cleanup
|
|
|
|
for.cond.cleanup: ; preds = %for.cond
|
|
%3 = bitcast i32* %j to i8*
|
|
call addrspace(1) void @llvm.lifetime.end.p0i8(i64 4, i8* %3) #2
|
|
br label %for.end8
|
|
|
|
for.body: ; preds = %for.cond
|
|
store i32 undef, i32* %i, align 4
|
|
%4 = bitcast i32* %i to i8*
|
|
call addrspace(1) void @llvm.lifetime.start.p0i8(i64 4, i8* %4) #2
|
|
store i32 0, i32* %i, align 4, !tbaa !2
|
|
br label %for.cond1
|
|
|
|
for.cond1: ; preds = %for.inc, %for.body
|
|
%5 = load i32, i32* %i, align 4, !tbaa !2
|
|
%6 = load i32, i32* @n, align 4, !tbaa !2
|
|
%cmp2 = icmp slt i32 %5, %6
|
|
br i1 %cmp2, label %for.body4, label %for.cond.cleanup3
|
|
|
|
for.cond.cleanup3: ; preds = %for.cond1
|
|
%7 = bitcast i32* %i to i8*
|
|
call addrspace(1) void @llvm.lifetime.end.p0i8(i64 4, i8* %7) #2
|
|
br label %for.end
|
|
|
|
for.body4: ; preds = %for.cond1
|
|
%8 = load i32, i32* %i, align 4, !tbaa !2
|
|
store volatile i32 %8, i32* @C, align 4, !tbaa !2
|
|
br label %for.inc
|
|
|
|
for.inc: ; preds = %for.body4
|
|
%9 = load i32, i32* %i, align 4, !tbaa !2
|
|
%inc5 = add nsw i32 %9, 1
|
|
store i32 %inc5, i32* %i, align 4, !tbaa !2
|
|
br label %for.cond1, !llvm.loop !6
|
|
|
|
for.end: ; preds = %for.cond.cleanup3
|
|
br label %for.inc6
|
|
|
|
for.inc6: ; preds = %for.end
|
|
%10 = load i32, i32* %j, align 4, !tbaa !2
|
|
%inc7 = add nsw i32 %10, 1
|
|
store i32 %inc7, i32* %j, align 4, !tbaa !2
|
|
br label %for.cond, !llvm.loop !8
|
|
|
|
for.end8: ; preds = %for.cond.cleanup
|
|
br label %do.cond
|
|
|
|
do.cond: ; preds = %for.end8
|
|
br i1 true, label %do.body, label %do.end, !llvm.loop !10
|
|
|
|
do.end: ; preds = %do.cond
|
|
ret void
|
|
}
|
|
|
|
; Function Attrs: argmemonly nofree nosync nounwind willreturn
|
|
declare void @llvm.lifetime.start.p0i8(i64 immarg, i8* nocapture) addrspace(1) #1
|
|
|
|
; Function Attrs: argmemonly nofree nosync nounwind willreturn
|
|
declare void @llvm.lifetime.end.p0i8(i64 immarg, i8* nocapture) addrspace(1) #1
|
|
|
|
attributes #0 = { nounwind "disable-tail-calls"="false" "frame-pointer"="all" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
|
|
attributes #1 = { argmemonly nofree nosync nounwind willreturn }
|
|
attributes #2 = { nounwind }
|
|
|
|
!llvm.module.flags = !{!0}
|
|
!llvm.ident = !{!1}
|
|
|
|
!0 = !{i32 1, !"wchar_size", i32 4}
|
|
!1 = !{!"clang)"}
|
|
!2 = !{!3, !3, i64 0, i64 4}
|
|
!3 = !{!4, i64 4, !"int"}
|
|
!4 = !{!5, i64 1, !"omnipotent char"}
|
|
!5 = !{!"Simple C++ TBAA"}
|
|
!6 = distinct !{!6, !7}
|
|
!7 = !{!"llvm.loop.mustprogress"}
|
|
!8 = distinct !{!8, !7, !9}
|
|
!9 = !{!"llvm.loop.unroll.disable"}
|
|
!10 = distinct !{!10, !11}
|
|
!11 = !{!"llvm.loop.unroll.count", i32 2}
|