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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 `{{.*}} `.
31 lines
544 B
C++
31 lines
544 B
C++
// RUN: %clang_cc1 -fms-extensions -triple x86_64-unknown-unknown -emit-llvm %s -o - | FileCheck %s
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struct A {
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~A() {}
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};
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extern "C" int f() {
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// CHECK: define{{.*}} i32 @f()
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// CHECK-NOT: call void @_ZN1AD1Ev
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// CHECK: ret i32 0
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return __noop(A());
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};
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extern "C" int g() {
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return __noop;
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// CHECK: define{{.*}} i32 @g()
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// CHECK: ret i32 0
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}
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extern "C" int h() {
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return (__noop);
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// CHECK: define{{.*}} i32 @h()
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// CHECK: ret i32 0
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}
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extern "C" int i() {
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return __noop + 1;
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// CHECK: define{{.*}} i32 @i()
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// CHECK: ret i32 1
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}
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