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.
13 lines
312 B
C
13 lines
312 B
C
// RUN: %clang_cc1 -triple x86_64-apple-darwin -emit-llvm -o - %s | FileCheck %s
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void f(void);
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void g(void) {
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// CHECK: define{{.*}} void @g() [[NUW:#[0-9]+]]
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// CHECK-NOT: call void @f() nounwind
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f();
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}
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// CHECK-NOT: declare void @f() [[NUW]]
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// CHECK: attributes [[NUW]] = { noinline nounwind{{.*}} }
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