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.
27 lines
485 B
C
27 lines
485 B
C
// RUN: %clang_cc1 -triple x86_64-apple-darwin -emit-llvm -o - %s | FileCheck %s
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struct frk { float _Complex c; int x; };
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struct faz { struct frk f; };
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struct fuz { struct faz f; };
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extern struct fuz foo(void);
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int X;
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struct frk F;
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float _Complex C;
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// CHECK-LABEL: define{{.*}} void @bar
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void bar(void) {
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X = foo().f.f.x;
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}
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// CHECK-LABEL: define{{.*}} void @bun
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void bun(void) {
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F = foo().f.f;
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}
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// CHECK-LABEL: define{{.*}} void @ban
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void ban(void) {
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C = foo().f.f.c;
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}
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