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 `{{.*}} `.
22 lines
754 B
C++
22 lines
754 B
C++
// RUN: %clang_cc1 -fmodules-ts -std=c++1z -triple=x86_64-linux-gnu -fmodules-codegen -emit-module-interface %s -o %t.pcm
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// RUN: %clang_cc1 -fmodules-ts -std=c++1z -triple=x86_64-linux-gnu %t.pcm -emit-llvm -o - | FileCheck %s
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export module FooBar;
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export {
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// CHECK-DAG: define{{.*}} i32 @_Z1fv(
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int f() { return 0; }
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}
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// CHECK-DAG: define weak_odr void @_ZW6FooBarE2f2v(
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inline void f2() { }
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// CHECK-DAG: define{{.*}} void @_ZW6FooBarE2f3v(
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static void f3() {}
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export void use_f3() { f3(); }
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// FIXME: Emit global variables and their initializers with this TU.
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// Emit an initialization function that other TUs can call, with guard variable?
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// FIXME: const-qualified variables don't have implicit internal linkage when owned by a module.
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