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7d50198c39
Summary: Make `AAMDNodes`' `getAAMetadata()` and `setAAMetadata()` to take `!tbaa.struct` into account as well as `!tbaa`. This impacts llvm.org/pr42022. This is a temprorary fix needed to keep `!tbaa.struct` tag by SROA pass. New field `TBAAStruct` should be deleted when `!tbaa` tag replaces `!tbaa.struct`. Merging two `!tbaa.struct`'s to one is conservatively considered to be `nullptr` (giving `MayAlias`) -- this could be enhanced, but relying on the said future replacement. Reviewers: RKSimon, spatel, vporpo Subscribers: hiraditya, kosarev, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D70924
33 lines
1.2 KiB
LLVM
33 lines
1.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -sroa %s | FileCheck %s
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; SROA should keep `!tbaa.struct` metadata
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%vector = type { float, float }
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declare void @llvm.memcpy.p0i8.p0i8.i64(i8* writeonly, i8* readonly, i64, i1 immarg)
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declare <2 x float> @foo(%vector* %0)
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define void @bar(%vector* %y2) {
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; CHECK-LABEL: @bar(
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; CHECK-NEXT: [[X14:%.*]] = call <2 x float> @foo(%vector* [[Y2:%.*]])
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; CHECK-NEXT: [[X7_SROA_0_0_X18_SROA_CAST:%.*]] = bitcast %vector* [[Y2]] to <2 x float>*
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; CHECK-NEXT: store <2 x float> [[X14]], <2 x float>* [[X7_SROA_0_0_X18_SROA_CAST]], align 4, !tbaa.struct !0
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; CHECK-NEXT: ret void
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;
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%x7 = alloca %vector
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%x14 = call <2 x float> @foo(%vector* %y2)
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%x15 = bitcast %vector* %x7 to <2 x float>*
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store <2 x float> %x14, <2 x float>* %x15
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%x19 = bitcast %vector* %x7 to i8*
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%x18 = bitcast %vector* %y2 to i8*
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 4 %x18, i8* align 4 %x19, i64 8, i1 false), !tbaa.struct !10
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ret void
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}
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!4 = !{!"omnipotent char", !5, i64 0}
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!5 = !{!"Simple C++ TBAA"}
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!7 = !{!"vector", !8, i64 0, !8, i64 4}
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!8 = !{!"float", !4, i64 0}
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!10 = !{i64 0, i64 4, !11, i64 4, i64 4, !11}
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!11 = !{!8, !8, i64 0}
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