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 `{{.*}} `.
21 lines
596 B
C++
21 lines
596 B
C++
// RUN: %clang_cc1 -triple i386-unknown-unknown -emit-llvm -o - %s | FileCheck %s
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void __attribute__((fastcall)) foo1(int &y);
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void bar1(int &y) {
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// CHECK-LABEL: define{{.*}} void @_Z4bar1Ri
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// CHECK: call x86_fastcallcc void @_Z4foo1Ri(i32* inreg nonnull align {{[0-9]+}} dereferenceable({{[0-9]+}}) %
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foo1(y);
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}
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struct S1 {
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int x;
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S1(const S1 &y);
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};
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void __attribute__((fastcall)) foo2(S1 a, int b);
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void bar2(S1 a, int b) {
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// CHECK-LABEL: define{{.*}} void @_Z4bar22S1i
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// CHECK: call x86_fastcallcc void @_Z4foo22S1i(%struct.S1* inreg %{{.*}}, i32 inreg %
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foo2(a, b);
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}
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