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
360 B
C++
12 lines
360 B
C++
// RUN: %clang_cc1 -fmodules-ts -triple x86_64-linux %s -emit-module-interface -o %t
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// RUN: %clang_cc1 -fmodules-ts -triple x86_64-linux -x pcm %t -emit-llvm -o - | FileCheck %s
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export module M;
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// CHECK-DAG: @_ZW1ME1a ={{.*}} constant i32 1
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const int a = 1;
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// CHECK-DAG: @b ={{.*}} constant i32 2
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export const int b = 2;
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export int f() { return a + b; }
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