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b998913ff4
loads and stores. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163844 91177308-0d34-0410-b5e6-96231b3b80d8
27 lines
1.0 KiB
LLVM
27 lines
1.0 KiB
LLVM
; RUN: opt -instcombine -S < %s | FileCheck %s
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
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%struct.foo = type { float }
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; Verify that instcombine preserves TBAA tags when converting a memcpy into
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; a scalar load and store.
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; CHECK: %2 = load float* %0, align 4, !tbaa !0
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; CHECK: store float %2, float* %1, align 4, !tbaa !0
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; CHECK: !0 = metadata !{metadata !"float", metadata !1}
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define void @test(%struct.foo* nocapture %a, %struct.foo* nocapture %b) {
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entry:
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%0 = bitcast %struct.foo* %a to i8*
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%1 = bitcast %struct.foo* %b to i8*
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tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %0, i8* %1, i64 4, i32 4, i1 false), !tbaa.struct !3
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ret void
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}
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declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i32, i1) nounwind
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!0 = metadata !{metadata !"Simple C/C++ TBAA"}
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!1 = metadata !{metadata !"omnipotent char", metadata !0}
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!2 = metadata !{metadata !"float", metadata !0}
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!3 = metadata !{i64 0, i64 4, metadata !2}
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