6b3351792c
For a definition (of most linkage types), dso_local is set for ELF -fno-pic/-fpie
and COFF, but not for Mach-O. This nuance causes unneeded binary format differences.
This patch replaces (function) `define ` with `define{{.*}} `,
(variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} `
if there is an explicit linkage.
* Clang will set dso_local for Mach-O, which is currently implied by TargetMachine.cpp. This will make COFF/Mach-O and executable ELF similar.
* Eventually I hope we can make dso_local the textual LLVM IR default (write explicit "dso_preemptable" when applicable) and -fpic ELF will be similar to everything else. This patch helps move toward that goal.
30 lines
800 B
C++
30 lines
800 B
C++
// RUN: %clang_cc1 -emit-llvm -o - -fcxx-exceptions -fexceptions -triple x86_64-apple-darwin10 %s | FileCheck %s
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struct X {
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X();
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~X();
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};
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struct Y { };
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// CHECK-LABEL: define{{.*}} void @_Z1fv
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// CHECK-SAME: personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
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void f() {
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// CHECK: call i32 @__cxa_guard_acquire(i64* @_ZGVZ1fvE1x)
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// CHECK: invoke void @_ZN1XC1Ev
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// CHECK: call i32 @__cxa_atexit
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// CHECK-NEXT: call void @__cxa_guard_release(i64* @_ZGVZ1fvE1x)
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// CHECK: br
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static X x;
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// CHECK: call i8* @__cxa_allocate_exception
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// CHECK: call void @__cxa_throw
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throw Y();
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// Finally, the landing pad.
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// CHECK: landingpad { i8*, i32 }
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// CHECK: cleanup
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// CHECK: call void @__cxa_guard_abort(i64* @_ZGVZ1fvE1x)
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// CHECK: resume { i8*, i32 }
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}
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