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.
17 lines
639 B
Objective-C
17 lines
639 B
Objective-C
// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -fobjc-gc -emit-llvm -o - %s | FileCheck %s
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void test0(void) {
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extern id test0_helper(void);
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__attribute__((objc_precise_lifetime)) id x = test0_helper();
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test0_helper();
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// CHECK-LABEL: define{{.*}} void @test0()
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// CHECK: [[T0:%.*]] = call i8* @test0_helper()
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// CHECK-NEXT: store i8* [[T0]], i8** [[X:%.*]], align 8
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// CHECK-NEXT: call i8* @test0_helper()
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// CHECK-NEXT: [[T0:%.*]] = load i8*, i8** [[X]], align 8
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// CHECK-NEXT: call void asm sideeffect "", "r"(i8* [[T0]]) [[NUW:#[0-9]+]]
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// CHECK-NEXT: ret void
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}
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// CHECK: attributes [[NUW]] = { nounwind }
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