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https://github.com/c64scene-ar/llvm-6502.git
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b1b9953473
When preserving noalias function parameter attributes by adding noalias metadata in the inliner, we should do this for general function calls (not just memory intrinsics). The logic is very similar to what already existed (except that we want to add this metadata even for functions taking no relevant parameters). This metadata can be used by ModRef queries in the caller after inlining. This addresses the first part of PR20500. Adding noalias metadata during inlining is still turned off by default. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@215657 91177308-0d34-0410-b5e6-96231b3b80d8
42 lines
1.8 KiB
LLVM
42 lines
1.8 KiB
LLVM
; RUN: opt -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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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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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, !alias.scope !0, !noalias !3
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; CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* %b, i8* %c, i64 16, i32 16, i1 false) #0, !alias.scope !3, !noalias !0
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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: 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: %a"}
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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: %c"}
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; CHECK: !5 = metadata !{metadata !1, metadata !4}
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