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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 `{{.*}} `.
50 lines
1.2 KiB
C++
50 lines
1.2 KiB
C++
// RUN: %clang_cc1 -triple x86_64-unknown-unknown -S -emit-llvm -o - %s | FileCheck %s
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namespace dr2338 {
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namespace A {
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enum E { Zero, One };
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E a(int x) { return static_cast<E>(x); }
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// CHECK-LABEL: define{{.*}} i32 @_ZN6dr23381A1aEi
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// CHECK: ret i32 %0
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E b(int x) { return (E)x; }
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// CHECK-LABEL: define{{.*}} i32 @_ZN6dr23381A1bEi
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// CHECK: ret i32 %0
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} // namespace A
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namespace B {
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enum E : bool { Zero, One };
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E a(int x) { return static_cast<E>(x); }
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// CHECK-LABEL: define{{.*}} zeroext i1 @_ZN6dr23381B1aEi
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// CHECK: ret i1 %tobool
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E b(int x) { return (E)x; }
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// CHECK-LABEL: define{{.*}} zeroext i1 @_ZN6dr23381B1bEi
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// CHECK: ret i1 %tobool
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} // namespace B
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namespace C {
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enum class E { Zero, One };
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E a(int x) { return static_cast<E>(x); }
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// CHECK-LABEL: define{{.*}} i32 @_ZN6dr23381C1aEi
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// CHECK: ret i32 %0
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E b(int x) { return (E)x; }
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// CHECK-LABEL: define{{.*}} i32 @_ZN6dr23381C1bEi
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// CHECK: ret i32 %0
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} // namespace C
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namespace D {
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enum class E : bool { Zero, One };
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E a(int x) { return static_cast<E>(x); }
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// CHECK-LABEL: define{{.*}} zeroext i1 @_ZN6dr23381D1aEi
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// CHECK: ret i1 %tobool
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E b(int x) { return (E)x; }
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// CHECK-LABEL: define{{.*}} zeroext i1 @_ZN6dr23381D1bEi
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// CHECK: ret i1 %tobool
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} // namespace D
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} // namespace dr2338
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