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76ab45d78b
Doing so breaks compilation of the following C program
(under -fprofile-instr-generate):
__attribute__((always_inline)) inline int foo() { return 0; }
int main() { return foo(); }
At link time, we fail because taking the address of an
available_externally function creates an undefined external reference,
which the TU cannot provide.
Emitting the function definition into the object file at all appears to
be a violation of the langref: "Globals with 'available_externally'
linkage are never emitted into the object file corresponding to the LLVM
module."
Differential Revision: https://reviews.llvm.org/D34134
llvm-svn: 305327
29 lines
824 B
LLVM
29 lines
824 B
LLVM
; Check that '__attribute__((always_inline)) inline' functions are inlined.
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; RUN: opt < %s -mtriple=x86_64-apple-macosx10.10.0 -instrprof -inline -S | FileCheck %s
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx10.13.0"
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@__profn_foo = linkonce_odr hidden constant [3 x i8] c"foo"
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; CHECK-LABEL: @main
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; CHECK-NOT: call
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define i32 @main() {
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entry:
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%call = call i32 @foo()
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ret i32 %call
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}
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declare void @llvm.instrprof.increment(i8*, i64, i32, i32) #0
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; CHECK-NOT: define available_externally i32 @foo
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define available_externally i32 @foo() #1 {
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entry:
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call void @llvm.instrprof.increment(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @__profn_foo, i32 0, i32 0), i64 0, i32 1, i32 0)
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ret i32 0
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}
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attributes #0 = { nounwind }
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attributes #1 = { alwaysinline }
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