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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 `{{.*}} `.
24 lines
1.1 KiB
C++
24 lines
1.1 KiB
C++
// RUN: echo "fun:*foo*" > %t.always-instrument
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// RUN: echo "src:*xray-always-instrument.cpp" >> %t.always-instrument
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// RUN: echo "[always]" > %t.xray-attrlist
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// RUN: echo "fun:*foo*" >> %t.xray-attrlist
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// RUN: echo "src:*xray-always-instrument.cpp" >> %t.xray-attrlist
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// RUN: %clang_cc1 -fxray-instrument -x c++ -std=c++11 \
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// RUN: -fxray-always-instrument=%t.always-instrument -emit-llvm -o - %s \
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// RUN: -triple x86_64-unknown-linux-gnu | FileCheck %s
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// RUN: %clang_cc1 -fxray-instrument -x c++ -std=c++11 \
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// RUN: -fxray-attr-list=%t.xray-attrlist -emit-llvm -o - %s \
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// RUN: -triple x86_64-unknown-linux-gnu | FileCheck %s
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void foo() {}
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[[clang::xray_never_instrument]] void bar() {}
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void baz() {}
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// CHECK: define{{.*}} void @_Z3foov() #[[ALWAYSATTR:[0-9]+]] {
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// CHECK: define{{.*}} void @_Z3barv() #[[NEVERATTR:[0-9]+]] {
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// CHECK: define{{.*}} void @_Z3bazv() #[[ALWAYSATTR:[0-9]+]] {
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// CHECK: attributes #[[ALWAYSATTR]] = {{.*}} "function-instrument"="xray-always" {{.*}}
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// CHECK: attributes #[[NEVERATTR]] = {{.*}} "function-instrument"="xray-never" {{.*}}
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