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Profiling: mark __llvm_profile_runtime_user optnone. #4016

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Profiling: mark __llvm_profile_runtime_user optnone. #4016

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1 change: 1 addition & 0 deletions llvm/lib/Transforms/Instrumentation/InstrProfiling.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1165,6 +1165,7 @@ bool InstrProfiling::emitRuntimeHook() {
GlobalValue::LinkOnceODRLinkage,
getInstrProfRuntimeHookVarUseFuncName(), M);
User->addFnAttr(Attribute::NoInline);
User->addFnAttr(Attribute::OptimizeNone);
if (Options.NoRedZone)
User->addFnAttr(Attribute::NoRedZone);
User->setVisibility(GlobalValue::HiddenVisibility);
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3 changes: 2 additions & 1 deletion llvm/test/Instrumentation/InstrProfiling/profiling.ll
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Expand Up @@ -99,10 +99,11 @@ declare void @llvm.instrprof.increment(i8*, i64, i32, i32)
; COFF: @llvm.compiler.used = appending global {{.*}} @__llvm_profile_runtime_user {{.*}} @__profd_foo {{.*}}
; XCOFF: @llvm.used = appending global {{.*}} @__llvm_profile_runtime_user {{.*}} @__profd_foo {{.*}}

; MACHO: define linkonce_odr hidden i32 @__llvm_profile_runtime_user() {{.*}} {
; MACHO: define linkonce_odr hidden i32 @__llvm_profile_runtime_user() [[ATTRS:#[0-9]+]] {
; MACHO: %[[REG:.*]] = load i32, i32* @__llvm_profile_runtime
; MACHO: ret i32 %[[REG]]
; MACHO: }
; MACHO: [[ATTRS]] = {{.*}}optnone
; COFF: define linkonce_odr hidden i32 @__llvm_profile_runtime_user() {{.*}} comdat {
; ELF-NOT: define linkonce_odr hidden i32 @__llvm_profile_runtime_user() {{.*}} {
; ELF-NOT: %[[REG:.*]] = load i32, i32* @__llvm_profile_runtime
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