c23b4fbdbb
Now that #149310 has restricted lifetime intrinsics to only work on allocas, we can also drop the explicit size argument. Instead, the size is implied by the alloca. This removes the ability to only mark a prefix of an alloca alive/dead. We never used that capability, so we should remove the need to handle that possibility everywhere (though many key places, including stack coloring, did not actually respect this).
151 lines
6.4 KiB
LLVM
151 lines
6.4 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
|
|
; RUN: opt -S -passes=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, ptr @C, align 4, !tbaa [[TBAA2:![0-9]+]]
|
|
; CHECK-NEXT: [[INC:%.*]] = add nsw i32 [[TMP0]], 1
|
|
; CHECK-NEXT: call addrspace(1) void @llvm.lifetime.start.p0(ptr [[J]]) #[[ATTR2:[0-9]+]]
|
|
; CHECK-NEXT: store i32 0, ptr [[J]], align 4, !tbaa [[TBAA2]]
|
|
; CHECK-NEXT: br label [[FOR_COND:%.*]]
|
|
; CHECK: for.cond:
|
|
; CHECK-NEXT: [[TMP1:%.*]] = load i32, ptr [[J]], align 4, !tbaa [[TBAA2]]
|
|
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[TMP1]], 3
|
|
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY:%.*]], label [[FOR_COND_CLEANUP:%.*]]
|
|
; CHECK: for.cond.cleanup:
|
|
; CHECK-NEXT: call addrspace(1) void @llvm.lifetime.end.p0(ptr [[J]]) #[[ATTR2]]
|
|
; CHECK-NEXT: br label [[DO_BODY]], !llvm.loop [[LOOP6:![0-9]+]]
|
|
; CHECK: for.body:
|
|
; CHECK-NEXT: store i32 undef, ptr [[I]], align 4
|
|
; CHECK-NEXT: call addrspace(1) void @llvm.lifetime.start.p0(ptr [[I]]) #[[ATTR2]]
|
|
; CHECK-NEXT: store i32 0, ptr [[I]], align 4, !tbaa [[TBAA2]]
|
|
; CHECK-NEXT: br label [[FOR_COND1:%.*]]
|
|
; CHECK: for.cond1:
|
|
; CHECK-NEXT: [[TMP2:%.*]] = load i32, ptr [[I]], align 4, !tbaa [[TBAA2]]
|
|
; CHECK-NEXT: [[TMP3:%.*]] = load i32, ptr @n, align 4, !tbaa [[TBAA2]]
|
|
; CHECK-NEXT: [[CMP2:%.*]] = icmp slt i32 [[TMP2]], [[TMP3]]
|
|
; CHECK-NEXT: br i1 [[CMP2]], label [[FOR_BODY4:%.*]], label [[FOR_COND_CLEANUP3:%.*]]
|
|
; CHECK: for.cond.cleanup3:
|
|
; CHECK-NEXT: call addrspace(1) void @llvm.lifetime.end.p0(ptr [[I]]) #[[ATTR2]]
|
|
; CHECK-NEXT: [[TMP4:%.*]] = load i32, ptr [[J]], align 4, !tbaa [[TBAA2]]
|
|
; CHECK-NEXT: [[INC7:%.*]] = add nsw i32 [[TMP4]], 1
|
|
; CHECK-NEXT: store i32 [[INC7]], ptr [[J]], align 4, !tbaa [[TBAA2]]
|
|
; CHECK-NEXT: br label [[FOR_COND]], !llvm.loop [[LOOP8:![0-9]+]]
|
|
; CHECK: for.body4:
|
|
; CHECK-NEXT: [[TMP5:%.*]] = load i32, ptr [[I]], align 4, !tbaa [[TBAA2]]
|
|
; CHECK-NEXT: store volatile i32 [[TMP5]], ptr @C, align 4, !tbaa [[TBAA2]]
|
|
; CHECK-NEXT: [[TMP6:%.*]] = load i32, ptr [[I]], align 4, !tbaa [[TBAA2]]
|
|
; CHECK-NEXT: [[INC5:%.*]] = add nsw i32 [[TMP6]], 1
|
|
; CHECK-NEXT: store i32 [[INC5]], ptr [[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, ptr @C, align 4, !tbaa !2
|
|
%inc = add nsw i32 %0, 1
|
|
call addrspace(1) void @llvm.lifetime.start.p0(ptr %j) #2
|
|
store i32 0, ptr %j, align 4, !tbaa !2
|
|
br label %for.cond
|
|
|
|
for.cond: ; preds = %for.inc6, %do.body
|
|
%1 = load i32, ptr %j, align 4, !tbaa !2
|
|
%cmp = icmp slt i32 %1, 3
|
|
br i1 %cmp, label %for.body, label %for.cond.cleanup
|
|
|
|
for.cond.cleanup: ; preds = %for.cond
|
|
call addrspace(1) void @llvm.lifetime.end.p0(ptr %j) #2
|
|
br label %for.end8
|
|
|
|
for.body: ; preds = %for.cond
|
|
store i32 undef, ptr %i, align 4
|
|
call addrspace(1) void @llvm.lifetime.start.p0(ptr %i) #2
|
|
store i32 0, ptr %i, align 4, !tbaa !2
|
|
br label %for.cond1
|
|
|
|
for.cond1: ; preds = %for.inc, %for.body
|
|
%2 = load i32, ptr %i, align 4, !tbaa !2
|
|
%3 = load i32, ptr @n, align 4, !tbaa !2
|
|
%cmp2 = icmp slt i32 %2, %3
|
|
br i1 %cmp2, label %for.body4, label %for.cond.cleanup3
|
|
|
|
for.cond.cleanup3: ; preds = %for.cond1
|
|
call addrspace(1) void @llvm.lifetime.end.p0(ptr %i) #2
|
|
br label %for.end
|
|
|
|
for.body4: ; preds = %for.cond1
|
|
%4 = load i32, ptr %i, align 4, !tbaa !2
|
|
store volatile i32 %4, ptr @C, align 4, !tbaa !2
|
|
br label %for.inc
|
|
|
|
for.inc: ; preds = %for.body4
|
|
%5 = load i32, ptr %i, align 4, !tbaa !2
|
|
%inc5 = add nsw i32 %5, 1
|
|
store i32 %inc5, ptr %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
|
|
%6 = load i32, ptr %j, align 4, !tbaa !2
|
|
%inc7 = add nsw i32 %6, 1
|
|
store i32 %inc7, ptr %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.p0(ptr nocapture) addrspace(1) #1
|
|
|
|
; Function Attrs: argmemonly nofree nosync nounwind willreturn
|
|
declare void @llvm.lifetime.end.p0(ptr 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}
|