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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 `{{.*}} `.
23 lines
470 B
C++
23 lines
470 B
C++
// RUN: %clang_cc1 %s -triple x86_64-none-linux-gnu -emit-llvm -fcxx-exceptions -fexceptions -std=c++11 -o - | FileCheck %s
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// PR13359
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struct X {
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~X();
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};
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struct Error {
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Error(const X&) noexcept;
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};
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void f() {
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try {
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throw Error(X());
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} catch (...) { }
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}
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// CHECK-LABEL: define{{.*}} void @_Z1fv
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// CHECK: call void @_ZN5ErrorC1ERK1X
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// CHECK: invoke void @__cxa_throw
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// CHECK: landingpad
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// CHECK: call void @_ZN1XD1Ev
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// CHECK-NOT: __cxa_free_exception
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