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3d60239dc7
An alloca which can be sunk into the extraction region may have more than one bitcast use. Move these uses along with the alloca to prevent use-before-def. Testing: check-llvm, stage2 build of clang Fixes llvm.org/PR42451. Differential Revision: https://reviews.llvm.org/D64463 llvm-svn: 365660
67 lines
2.0 KiB
LLVM
67 lines
2.0 KiB
LLVM
; RUN: opt -S -partial-inliner -skip-partial-inlining-cost-analysis < %s | FileCheck %s
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; RUN: opt -S -passes=partial-inliner -skip-partial-inlining-cost-analysis < %s | FileCheck %s
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%class.A = type { i32 }
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@cond = local_unnamed_addr global i32 0, align 4
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; Function Attrs: uwtable
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define void @_Z3foov() local_unnamed_addr {
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bb:
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%tmp = alloca %class.A, align 4
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%tmp1 = alloca %class.A, align 4
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%tmp2 = bitcast %class.A* %tmp to i8*
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call void @llvm.lifetime.start.p0i8(i64 4, i8* nonnull %tmp2)
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%tmp3 = bitcast %class.A* %tmp1 to i8*
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call void @llvm.lifetime.start.p0i8(i64 4, i8* nonnull %tmp3)
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%tmp4 = load i32, i32* @cond, align 4, !tbaa !2
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%tmp5 = icmp eq i32 %tmp4, 0
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br i1 %tmp5, label %bb6, label %bb7
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bb6: ; preds = %bb
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call void @_ZN1A7memfuncEv(%class.A* nonnull %tmp)
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br label %bb7
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bb7: ; preds = %bb6, %bb
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call void @llvm.lifetime.end.p0i8(i64 4, i8* nonnull %tmp3)
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call void @llvm.lifetime.end.p0i8(i64 4, i8* nonnull %tmp2)
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ret void
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}
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; Function Attrs: argmemonly nounwind
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declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture)
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declare void @_ZN1A7memfuncEv(%class.A*) local_unnamed_addr
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; Function Attrs: argmemonly nounwind
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declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture)
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; Function Attrs: uwtable
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define void @_Z3goov() local_unnamed_addr {
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bb:
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tail call void @_Z3foov()
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ret void
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}
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; CHECK-LABEL: define internal void @_Z3foov.1.
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; CHECK: newFuncRoot:
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; CHECK-NEXT: alloca
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; CHECK-NEXT: alloca
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; CHECK-NEXT: bitcast
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; CHECK-NEXT: call void @llvm.lifetime.start.p0i8
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; CHECK-NEXT: bitcast
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; CHECK-NEXT: call void @llvm.lifetime.start.p0i8
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; CHECK: call void @llvm.lifetime.end.p0i8
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; CHECK-NEXT: call void @llvm.lifetime.end.p0i8
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; CHECK-NEXT: br label {{.*}}exitStub
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!llvm.module.flags = !{!0}
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!llvm.ident = !{!1}
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!0 = !{i32 1, !"wchar_size", i32 4}
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!1 = !{!"clang version 5.0.0 (trunk 304489)"}
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!2 = !{!3, !3, i64 0}
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!3 = !{!"int", !4, i64 0}
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!4 = !{!"omnipotent char", !5, i64 0}
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!5 = !{!"Simple C++ TBAA"}
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