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8a99aa5539
This feeds AA through the IFI structure into the inliner so that AddAliasScopeMetadata can use AA->getModRefBehavior to figure out which functions only access their arguments (instead of just hard-coding some knowledge of memory intrinsics). Most of the information is only available from BasicAA; this is important for preserving alias scoping information for target-specific intrinsics when doing the noalias parameter attribute to metadata conversion. llvm-svn: 216866
45 lines
2.0 KiB
LLVM
45 lines
2.0 KiB
LLVM
; RUN: opt -basicaa -inline -enable-noalias-to-md-conversion -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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target triple = "x86_64-unknown-linux-gnu"
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declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture readonly, i64, i32, i1) #0
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declare void @hey() #0
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define void @hello(i8* noalias nocapture %a, i8* noalias nocapture readonly %c, i8* nocapture %b) #1 {
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entry:
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%l = alloca i8, i32 512, align 1
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %a, i8* %b, i64 16, i32 16, i1 0)
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %b, i8* %c, i64 16, i32 16, i1 0)
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %a, i8* %c, i64 16, i32 16, i1 0)
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call void @hey()
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %l, i8* %c, i64 16, i32 16, i1 0)
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ret void
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}
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define void @foo(i8* nocapture %a, i8* nocapture readonly %c, i8* nocapture %b) #1 {
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entry:
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tail call void @hello(i8* %a, i8* %c, i8* %b)
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ret void
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}
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; CHECK: define void @foo(i8* nocapture %a, i8* nocapture readonly %c, i8* nocapture %b) #1 {
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; CHECK: entry:
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; CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* %a, i8* %b, i64 16, i32 16, i1 false) #0, !noalias !0
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; CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* %b, i8* %c, i64 16, i32 16, i1 false) #0, !noalias !3
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; CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* %a, i8* %c, i64 16, i32 16, i1 false) #0, !alias.scope !5
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; CHECK: call void @hey() #0, !noalias !5
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; CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* %{{.*}}, i8* %c, i64 16, i32 16, i1 false) #0, !noalias !3
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; CHECK: ret void
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; CHECK: }
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attributes #0 = { nounwind }
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attributes #1 = { nounwind uwtable }
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; CHECK: !0 = metadata !{metadata !1}
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; CHECK: !1 = metadata !{metadata !1, metadata !2, metadata !"hello: %c"}
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; CHECK: !2 = metadata !{metadata !2, metadata !"hello"}
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; CHECK: !3 = metadata !{metadata !4}
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; CHECK: !4 = metadata !{metadata !4, metadata !2, metadata !"hello: %a"}
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; CHECK: !5 = metadata !{metadata !4, metadata !1}
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