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fd739804e0
For a default visibility external linkage definition, dso_local is set for ELF
-fno-pic/-fpie and COFF and Mach-O. Since default clang -cc1 for ELF is similar
to -fpic ("PIC Level" is not set), this nuance causes unneeded binary format differences.
To make emitted IR similar, ELF -cc1 -fpic will default to -fno-semantic-interposition,
which sets dso_local for default visibility external linkage definitions.
To make this flip smooth and enable future (dso_local as definition default),
this patch replaces (function) `define ` with `define{{.*}} `,
(variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} `.
15 lines
545 B
C++
15 lines
545 B
C++
// RUN: %clang_cc1 -fxray-instrument -fxray-instruction-threshold=1 -x c++ -std=c++11 -emit-llvm -o - %s -triple x86_64-unknown-linux-gnu | FileCheck %s
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int foo() {
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return 1;
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}
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[[clang::xray_never_instrument]] int bar() {
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return 2;
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}
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// CHECK: define{{.*}} i32 @_Z3foov() #[[THRESHOLD:[0-9]+]] {
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// CHECK: define{{.*}} i32 @_Z3barv() #[[NEVERATTR:[0-9]+]] {
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// CHECK-DAG: attributes #[[THRESHOLD]] = {{.*}} "xray-instruction-threshold"="1" {{.*}}
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// CHECK-DAG: attributes #[[NEVERATTR]] = {{.*}} "function-instrument"="xray-never" {{.*}}
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