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https://github.com/RPCS3/llvm-mirror.git
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97957b2f53
Summary: In D62801, new function attribute `willreturn` was introduced. In short, a function with `willreturn` is guaranteed to come back to the call site(more precise definition is in LangRef). In this patch, willreturn is annotated for LLVM intrinsics. Reviewers: jdoerfert Reviewed By: jdoerfert Subscribers: jvesely, nhaehnle, sstefan1, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D64904 llvm-svn: 367184
46 lines
2.0 KiB
LLVM
46 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, 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* align 16 %a, i8* align 16 %b, i64 16, i1 0)
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 16 %b, i8* align 16 %c, i64 16, i1 0)
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 16 %a, i8* align 16 %c, i64 16, i1 0)
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call void @hey()
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 16 %l, i8* align 16 %c, i64 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) #2 {
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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) #2 {
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; CHECK: entry:
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; CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 16 %a, i8* align 16 %b, i64 16, i1 false) #1, !noalias !0
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; CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 16 %b, i8* align 16 %c, i64 16, i1 false) #1, !noalias !3
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; CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 16 %a, i8* align 16 %c, i64 16, i1 false) #1, !alias.scope !5
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; CHECK: call void @hey() #1, !noalias !5
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; CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 16 %{{.*}}, i8* align 16 %c, i64 16, i1 false) #1, !noalias !3
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; CHECK: ret void
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; CHECK: }
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attributes #0 = { nounwind argmemonly willreturn }
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attributes #1 = { nounwind }
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attributes #2 = { nounwind uwtable }
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; CHECK: !0 = !{!1}
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; CHECK: !1 = distinct !{!1, !2, !"hello: %c"}
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; CHECK: !2 = distinct !{!2, !"hello"}
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; CHECK: !3 = !{!4}
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; CHECK: !4 = distinct !{!4, !2, !"hello: %a"}
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; CHECK: !5 = !{!4, !1}
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