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
507 B
C
12 lines
507 B
C
// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -emit-llvm -o - %s | FileCheck %s
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// RUN: %clang_cc1 -triple i686-unknown-linux-gnu -emit-llvm -o - %s | FileCheck %s --check-prefix=CHECK-OK
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void (__attribute__((regparm(3), stdcall)) *pf) ();
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void (__attribute__((regparm(2), stdcall)) foo)(int a) {
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}
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// CHECK: @pf ={{.*}} global void (...)* null
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// CHECK: define{{.*}} void @foo(i32 %a)
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// CHECK-OK: @pf ={{.*}} global void (...)* null
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// CHECK-OK: define{{.*}} x86_stdcallcc void @foo(i32 inreg %a)
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