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145ca3d2aa
This actually uncovered a surprisingly large chain of ultimately unused TLI args. From what I can gather, this argument is a remnant of when isKnownNonNull would look at the TLI directly. The current approach seems to be that InferFunctionAttrs runs early in the pipeline and uses TLI to annotate the TLI-dependent non-null information as return attributes. This also removes the dependence of functionattrs on TLI altogether. llvm-svn: 274455
66 lines
1.6 KiB
LLVM
66 lines
1.6 KiB
LLVM
; RUN: opt < %s -basicaa -functionattrs -rpo-functionattrs -S | FileCheck %s
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; RUN: opt < %s -aa-pipeline=basic-aa -passes='cgscc(function-attrs),rpo-functionattrs' -S | FileCheck %s
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; CHECK: define i32 @leaf() #0
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define i32 @leaf() {
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ret i32 1
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}
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; CHECK: define i32 @self_rec() #1
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define i32 @self_rec() {
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%a = call i32 @self_rec()
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ret i32 4
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}
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; CHECK: define i32 @indirect_rec() #1
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define i32 @indirect_rec() {
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%a = call i32 @indirect_rec2()
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ret i32 %a
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}
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; CHECK: define i32 @indirect_rec2() #1
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define i32 @indirect_rec2() {
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%a = call i32 @indirect_rec()
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ret i32 %a
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}
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; CHECK: define i32 @extern() #1
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define i32 @extern() {
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%a = call i32 @k()
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ret i32 %a
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}
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declare i32 @k() readnone
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; CHECK: define void @intrinsic(i8* nocapture %dest, i8* nocapture readonly %src, i32 %len) {
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define void @intrinsic(i8* %dest, i8* %src, i32 %len) {
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call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 %len, i32 1, i1 false)
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ret void
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}
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declare void @llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, i32, i1)
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; CHECK: define internal i32 @called_by_norecurse() #0
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define internal i32 @called_by_norecurse() {
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%a = call i32 @k()
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ret i32 %a
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}
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define void @m() norecurse {
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%a = call i32 @called_by_norecurse()
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ret void
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}
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; CHECK: define internal i32 @called_by_norecurse_indirectly() #0
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define internal i32 @called_by_norecurse_indirectly() {
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%a = call i32 @k()
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ret i32 %a
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}
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define internal void @o() {
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%a = call i32 @called_by_norecurse_indirectly()
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ret void
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}
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define void @p() norecurse {
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call void @o()
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ret void
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}
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; CHECK: attributes #0 = { norecurse readnone }
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; CHECK: attributes #1 = { readnone }
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