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 `{{.*}} `.
54 lines
1.9 KiB
C++
54 lines
1.9 KiB
C++
// RUN: %clang_cc1 -triple x86_64-linux-pc -DREDECL -emit-llvm %s -o - | FileCheck %s -check-prefix LINUX
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// RUN: %clang_cc1 -triple spir-unknown-unknown -DREDECL -DSPIR -emit-llvm %s -o - | FileCheck %s -check-prefix SPIR
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// RUN: %clang_cc1 -triple x86_64-linux-pc -emit-llvm %s -o - | FileCheck %s -check-prefix LINUX
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// RUN: %clang_cc1 -triple spir-unknown-unknown -DSPIR -emit-llvm %s -o - | FileCheck %s -check-prefix SPIR
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// RUN: %clang_cc1 -triple i386-windows-pc -fdefault-calling-conv=stdcall -emit-llvm %s -o - | FileCheck %s -check-prefix WIN32
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#ifdef REDECL
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namespace std {
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#ifdef SPIR
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using size_t = unsigned int;
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#else
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using size_t = unsigned long;
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#endif // SPIR
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} // namespace std
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float __builtin_atan2f(float, float);
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void *operator new(std::size_t);
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#endif // REDECL
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void foo();
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void user() {
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int i;
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::operator new(5);
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(void)__builtin_atan2f(1.1, 2.2);
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foo();
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}
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// LINUX: define{{.*}} void @_Z4userv()
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// LINUX: call noalias nonnull i8* @_Znwm
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// LINUX: call float @atan2f
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// LINUX: call void @_Z3foov
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// LINUX: declare nonnull i8* @_Znwm(i64)
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// LINUX: declare float @atan2f(float, float)
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// LINUX: declare void @_Z3foov()
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// SPIR: define{{.*}} spir_func void @_Z4userv()
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// SPIR: call spir_func noalias nonnull i8* @_Znwj
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// SPIR: call spir_func float @atan2f
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// SPIR: call spir_func void @_Z3foov
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// SPIR: declare spir_func nonnull i8* @_Znwj(i32)
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// SPIR: declare spir_func float @atan2f(float, float)
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// SPIR: declare spir_func void @_Z3foov()
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// Note: Windows /G options should not change the platform default calling
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// convention of builtins.
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// WIN32: define dso_local x86_stdcallcc void @"?user@@YGXXZ"()
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// WIN32: call noalias nonnull i8* @"??2@YAPAXI@Z"
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// WIN32: call float @atan2f
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// WIN32: call x86_stdcallcc void @"?foo@@YGXXZ"
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// WIN32: declare dso_local nonnull i8* @"??2@YAPAXI@Z"(
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// WIN32: declare dso_local float @atan2f(float, float)
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// WIN32: declare dso_local x86_stdcallcc void @"?foo@@YGXXZ"()
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