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bb46c62876
This change correctly sets the attributes on the callsites generated in thunks. This makes sure things such as sret, sext, etc. are correctly set, so that the call can be a proper tailcall. Also, the transfer of attributes in the replaceDirectCallers function appears to be unnecessary, but until this is confirmed it will remain. Author: jrkoenig Reviewers: dschuff, jfb Subscribers: llvm-commits, nlewycky Differential revision: http://reviews.llvm.org/D12581 llvm-svn: 247313
48 lines
1.3 KiB
LLVM
48 lines
1.3 KiB
LLVM
; RUN: opt -S -mergefunc < %s | FileCheck %s
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%Opaque_type = type opaque
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%S2i = type <{ i64, i64 }>
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%D2i = type <{ i64, i64 }>
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%Di = type <{ i32 }>
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%Si = type <{ i32 }>
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define void @B(%Opaque_type* sret %a, %S2i* %b, i32* %xp, i32* %yp) {
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%x = load i32, i32* %xp
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%y = load i32, i32* %yp
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%sum = add i32 %x, %y
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%sum2 = add i32 %sum, %y
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%sum3 = add i32 %sum2, %y
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ret void
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}
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define void @C(%Opaque_type* sret %a, %S2i* %b, i32* %xp, i32* %yp) {
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%x = load i32, i32* %xp
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%y = load i32, i32* %yp
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%sum = add i32 %x, %y
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%sum2 = add i32 %sum, %y
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%sum3 = add i32 %sum2, %y
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ret void
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}
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define void @A(%Opaque_type* sret %a, %D2i* %b, i32* %xp, i32* %yp) {
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%x = load i32, i32* %xp
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%y = load i32, i32* %yp
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%sum = add i32 %x, %y
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%sum2 = add i32 %sum, %y
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%sum3 = add i32 %sum2, %y
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ret void
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}
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; Make sure we transfer the parameter attributes to the call site.
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; CHECK-LABEL: define void @C(%Opaque_type* sret
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; CHECK: tail call void bitcast (void (%Opaque_type*, %D2i*, i32*, i32*)* @A to void (%Opaque_type*, %S2i*, i32*, i32*)*)(%Opaque_type* sret %0, %S2i* %1, i32* %2, i32* %3)
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; CHECK: ret void
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; Make sure we transfer the parameter attributes to the call site.
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; CHECK-LABEL: define void @B(%Opaque_type* sret
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; CHECK: %5 = bitcast
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; CHECK: tail call void @A(%Opaque_type* sret %0, %D2i* %5, i32* %2, i32* %3)
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; CHECK: ret void
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