e3b10525b4
We previously made all multiversioning resolvers/ifuncs have weak ODR linkage in IR, since we NEED to emit the whole resolver every time we see a call, but it is not necessarily the place where all the definitions live. HOWEVER, when doing so, we neglected the case where the versions have internal linkage. This patch ensures we do this, so you don't get weird behavior with static functions.
79 lines
2.2 KiB
C++
79 lines
2.2 KiB
C++
// This test checks if internal linkage symbols get unique names with
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// -funique-internal-linkage-names option.
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// RUN: %clang_cc1 -triple x86_64 -x c++ -S -emit-llvm -o - < %s | FileCheck %s --check-prefix=PLAIN
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// RUN: %clang_cc1 -triple x86_64 -x c++ -S -emit-llvm -funique-internal-linkage-names -o - < %s | FileCheck %s --check-prefix=UNIQUE
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static int glob;
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static int foo() {
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return 0;
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}
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int (*bar())() {
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return foo;
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}
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int getGlob() {
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return glob;
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}
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// Function local static variable and anonymous namespace namespace variable.
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namespace {
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int anon_m;
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int getM() {
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return anon_m;
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}
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} // namespace
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int retAnonM() {
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static int fGlob;
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return getM() + fGlob;
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}
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// Multiversioning symbols
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__attribute__((target("default"))) static int mver() {
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return 0;
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}
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__attribute__((target("sse4.2"))) static int mver() {
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return 1;
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}
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int mver_call() {
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return mver();
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}
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namespace {
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class A {
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public:
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A() {}
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~A() {}
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};
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}
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void test() {
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A a;
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}
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// PLAIN: @_ZL4glob = internal global
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// PLAIN: @_ZZ8retAnonMvE5fGlob = internal global
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// PLAIN: @_ZN12_GLOBAL__N_16anon_mE = internal global
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// PLAIN: define internal i32 @_ZL3foov()
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// PLAIN: define internal i32 @_ZN12_GLOBAL__N_14getMEv
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// PLAIN: define internal i32 ()* @_ZL4mverv.resolver()
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// PLAIN: define internal void @_ZN12_GLOBAL__N_11AC1Ev
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// PLAIN: define internal void @_ZN12_GLOBAL__N_11AD1Ev
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// PLAIN: define internal i32 @_ZL4mverv()
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// PLAIN: define internal i32 @_ZL4mverv.sse4.2()
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// PLAIN-NOT: "sample-profile-suffix-elision-policy"
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// UNIQUE: @_ZL4glob = internal global
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// UNIQUE: @_ZZ8retAnonMvE5fGlob = internal global
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// UNIQUE: @_ZN12_GLOBAL__N_16anon_mE = internal global
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// UNIQUE: define internal i32 @_ZL3foov.[[MODHASH:__uniq.[0-9]+]]() #[[#ATTR:]] {
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// UNIQUE: define internal i32 @_ZN12_GLOBAL__N_14getMEv.[[MODHASH]]
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// UNIQUE: define internal i32 ()* @_ZL4mverv.[[MODHASH]].resolver()
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// UNIQUE: define internal void @_ZN12_GLOBAL__N_11AC1Ev.__uniq.68358509610070717889884130747296293671
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// UNIQUE: define internal void @_ZN12_GLOBAL__N_11AD1Ev.__uniq.68358509610070717889884130747296293671
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// UNIQUE: define internal i32 @_ZL4mverv.[[MODHASH]]()
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// UNIQUE: define internal i32 @_ZL4mverv.[[MODHASH]].sse4.2
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// UNIQUE: attributes #[[#ATTR]] = { {{.*}}"sample-profile-suffix-elision-policy"{{.*}} }
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