d8c6d24359
Please see D93747 for more context which tries to make linkage names of internal linkage functions to be the uniqueified names. This causes a problem with gdb because breaking using the demangled function name will not work if the new uniqueified name cannot be demangled. The problem is the generated suffix which is a mix of integers and letters which do not demangle. The demangler accepts either all numbers or all letters. This patch simply converts the hash to decimal. There is no loss of uniqueness by doing this as the precision is maintained. The symbol names get longer by a few characters though. Differential Revision: https://reviews.llvm.org/D94154
68 lines
2.5 KiB
C++
68 lines
2.5 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++ -O0 -S -emit-llvm -funique-internal-linkage-names -o - < %s | FileCheck %s --check-prefix=UNIQUE
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// RUN: %clang_cc1 -triple x86_64 -x c++ -O1 -S -emit-llvm -funique-internal-linkage-names -o - < %s | FileCheck %s --check-prefix=UNIQUEO1
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// RUN: %clang_cc1 -triple x86_64 -x c++ -O0 -S -emit-llvm -fexperimental-new-pass-manager -funique-internal-linkage-names -o - < %s | FileCheck %s --check-prefix=UNIQUE
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// RUN: %clang_cc1 -triple x86_64 -x c++ -O1 -S -emit-llvm -fexperimental-new-pass-manager -funique-internal-linkage-names -o - < %s | FileCheck %s --check-prefix=UNIQUEO1
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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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// 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 weak_odr i32 ()* @_ZL4mverv.resolver()
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// PLAIN: define internal i32 @_ZL4mverv()
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// PLAIN: define internal i32 @_ZL4mverv.sse4.2()
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// UNIQUE: @_ZL4glob.__uniq.{{[0-9]+}} = internal global
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// UNIQUE: @_ZZ8retAnonMvE5fGlob.__uniq.{{[0-9]+}} = internal global
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// UNIQUE: @_ZN12_GLOBAL__N_16anon_mE.__uniq.{{[0-9]+}} = internal global
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// UNIQUE: define internal i32 @_ZL3foov.__uniq.{{[0-9]+}}()
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// UNIQUE: define internal i32 @_ZN12_GLOBAL__N_14getMEv.__uniq.{{[0-9]+}}
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// UNIQUE: define weak_odr i32 ()* @_ZL4mverv.resolver()
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// UNIQUE: define internal i32 @_ZL4mverv.__uniq.{{[0-9]+}}()
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// UNIQUE: define internal i32 @_ZL4mverv.sse4.2.__uniq.{{[0-9]+}}
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// UNIQUEO1: define internal i32 @_ZL3foov.__uniq.{{[0-9]+}}()
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// UNIQUEO1: define weak_odr i32 ()* @_ZL4mverv.resolver()
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// UNIQUEO1: define internal i32 @_ZL4mverv.__uniq.{{[0-9]+}}()
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// UNIQUEO1: define internal i32 @_ZL4mverv.sse4.2.__uniq.{{[0-9]+}}
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