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 `{{.*}} `.
12 lines
576 B
C++
12 lines
576 B
C++
// RUN: %clang_cc1 -std=c++17 -emit-llvm -fchar8_t -triple x86_64-linux %s -o - | FileCheck %s --check-prefix=ITANIUM
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// RUN: %clang_cc1 -std=c++17 -emit-llvm -fchar8_t -triple x86_64-windows %s -o - | FileCheck %s --check-prefix=MSABI
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// ITANIUM: define{{.*}} void @_Z1fDu(
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// MSABI: define {{.*}}void @"?f@@YAX_Q@Z"(
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void f(char8_t c) {}
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// ITANIUM: define weak_odr void @_Z1gIiEvDTplplcvT__ELA4_KDuELDu114EE(
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// MSABI: define weak_odr {{.*}}void @"??$g@H@@YAXPEB_Q@Z"(
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template<typename T> void g(decltype(T() + u8"foo" + u8'r')) {}
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template void g<int>(const char8_t*);
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