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).
62 lines
1.8 KiB
LLVM
62 lines
1.8 KiB
LLVM
; 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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call void @llvm.lifetime.start.p0(ptr nonnull %tmp)
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call void @llvm.lifetime.start.p0(ptr nonnull %tmp1)
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%tmp4 = load i32, ptr @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(ptr 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.p0(ptr nonnull %tmp1)
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call void @llvm.lifetime.end.p0(ptr nonnull %tmp)
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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.p0(ptr nocapture)
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declare void @_ZN1A7memfuncEv(ptr) local_unnamed_addr
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; Function Attrs: argmemonly nounwind
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declare void @llvm.lifetime.end.p0(ptr 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: call void @llvm.lifetime.start.p0
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; CHECK-NEXT: call void @llvm.lifetime.start.p0
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; CHECK: call void @llvm.lifetime.end.p0
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; CHECK-NEXT: call void @llvm.lifetime.end.p0
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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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