c6cf918f44
Summary: r262157 added ELF-specific logic to put a comdat on the __profc_* globals created for available_externally functions. We should be able to generalize that logic to all object file formats that support comdats, i.e. everything other than MachO. This fixes duplicate symbol errors, since on COFF, linkonce_odr doesn't make the symbol weak. Fixes PR38251. Reviewers: davidxl, xur Subscribers: hiraditya, dmajor, llvm-commits, aheejin Differential Revision: https://reviews.llvm.org/D49882 llvm-svn: 338082
53 lines
1.6 KiB
LLVM
53 lines
1.6 KiB
LLVM
; RUN: opt < %s -mtriple=x86_64-unknown-linux -pgo-instr-gen -do-comdat-renaming=true -S | FileCheck %s
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; RUN: opt < %s -mtriple=x86_64-unknown-linux -passes=pgo-instr-gen -do-comdat-renaming=true -S | FileCheck %s
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; RUN: opt < %s -mtriple=x86_64-pc-win32-coff -pgo-instr-gen -do-comdat-renaming=true -S | FileCheck %s
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; RUN: opt < %s -mtriple=x86_64-pc-win32-coff -passes=pgo-instr-gen -do-comdat-renaming=true -S | FileCheck %s
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; Rename Comdat group and its function.
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$f = comdat any
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; CHECK: $f.[[SINGLEBB_HASH:[0-9]+]] = comdat any
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define linkonce_odr void @f() comdat($f) {
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ret void
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}
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; Not rename Comdat with right linkage.
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$nf = comdat any
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; CHECK: $nf = comdat any
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define void @nf() comdat($nf) {
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ret void
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}
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; Not rename Comdat with variable members.
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$f_with_var = comdat any
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; CHECK: $f_with_var = comdat any
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@var = global i32 0, comdat($f_with_var)
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define linkonce_odr void @f_with_var() comdat($f_with_var) {
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%tmp = load i32, i32* @var, align 4
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%inc = add nsw i32 %tmp, 1
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store i32 %inc, i32* @var, align 4
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ret void
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}
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; Not rename Comdat with multiple functions.
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$tf = comdat any
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; CHECK: $tf = comdat any
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define linkonce void @tf() comdat($tf) {
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ret void
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}
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define linkonce void @tf2() comdat($tf) {
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ret void
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}
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; Rename AvailableExternallyLinkage functions
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; CHECK-DAG: $aef.[[SINGLEBB_HASH]] = comdat any
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; CHECK: @f = weak alias void (), void ()* @f.[[SINGLEBB_HASH]]
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; CHECK: @aef = weak alias void (), void ()* @aef.[[SINGLEBB_HASH]]
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define available_externally void @aef() {
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; CHECK: define linkonce_odr void @aef.[[SINGLEBB_HASH]]() comdat {
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ret void
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}
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