derek.holloway
7502bf64a4
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59 lines
1.8 KiB
LLVM
59 lines
1.8 KiB
LLVM
; Function import can promote an internal function to external but not mark it as prevailing.
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; Given that the internal function's attributes would have already propagated to its callers
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; that are part of the import chain there's no need to actually propagate off this copy as
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; propagating the caller performs the same thing.
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; RUN: split-file %s %t
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; RUN: opt -thinlto-bc %t/main.ll -thin-link-bitcode-file=%t1.thinlink.bc -o %t1.bc
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; RUN: opt -thinlto-bc %t/callees.ll -thin-link-bitcode-file=%t2.thinlink.bc -o %t2.bc
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; RUN: llvm-lto2 run -disable-thinlto-funcattrs=0 \
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; RUN: %t1.bc %t2.bc -o %t.o \
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; RUN: -r %t1.bc,caller,l -r %t1.bc,caller_noattr,l -r %t1.bc,importer,px -r %t1.bc,importer_noattr,px \
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; RUN: -r %t2.bc,caller,px -r %t2.bc,caller_noattr,px \
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; RUN: -save-temps
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; RUN: llvm-dis -o - %t.o.1.3.import.bc | FileCheck %s --match-full-lines
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;--- main.ll
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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declare void @caller()
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declare void @caller_noattr()
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; CHECK: define void @importer() [[ATTR_PROP:#[0-9]+]] {
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define void @importer() {
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call void @caller()
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ret void
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}
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; If somehow the caller doesn't get the attributes, we
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; shouldn't propagate from the internal callee.
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; CHECK: define void @importer_noattr() #0 {
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define void @importer_noattr() {
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call void @caller_noattr()
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ret void
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}
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; CHECK: define available_externally hidden void @callee{{.*}}
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; CHECK-DAG: attributes [[ATTR_PROP]] = { norecurse nounwind }
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;--- callees.ll
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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attributes #0 = { nounwind norecurse }
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define void @caller() #0 {
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call void @callee()
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ret void
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}
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define void @caller_noattr() {
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call void @callee()
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ret void
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}
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define internal void @callee() #0 {
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ret void
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}
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