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.
51 lines
1.3 KiB
Plaintext
51 lines
1.3 KiB
Plaintext
// RUN: %clang_cc1 -std=c++11 -triple x86_64-apple-darwin10 -emit-llvm -fobjc-arc -disable-llvm-passes -o - %s | FileCheck %s
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// rdar://18249673
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@class MyObject;
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struct base {
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~base() = default;
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};
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struct derived : public base {
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MyObject *myobject;
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};
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void test1() {
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derived d1;
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}
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// CHECK-LABEL: define{{.*}} void @_Z5test1v()
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// CHECK: call void @_ZN7derivedC1Ev
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// CHECK: call void @_ZN7derivedD1Ev
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void test2() {
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derived *d2 = new derived;
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delete d2;
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}
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// CHECK-LABEL: define{{.*}} void @_Z5test2v()
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// CHECK: call void @_ZN7derivedC1Ev
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// CHECK: call void @_ZN7derivedD1Ev
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template <typename T>
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struct tderived : public base {
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MyObject *myobject;
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};
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void test3() {
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tderived<int> d1;
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}
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// CHECK-LABEL: define{{.*}} void @_Z5test3v()
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// CHECK: call void @_ZN8tderivedIiEC1Ev
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// CHECK: call void @_ZN8tderivedIiED1Ev
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void test4() {
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tderived<int> *d2 = new tderived<int>;
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delete d2;
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}
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// CHECK-LABEL: define{{.*}} void @_Z5test4v()
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// CHECK: call void @_ZN8tderivedIiEC1Ev
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// CHECK: call void @_ZN8tderivedIiED1Ev
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// CHECK-LABEL: define linkonce_odr void @_ZN7derivedD2Ev
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// CHECK: call void @llvm.objc.storeStrong(i8** {{.*}}, i8* null)
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// CHECK-LABEL: define linkonce_odr void @_ZN8tderivedIiED2Ev
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// CHECK: call void @llvm.objc.storeStrong(i8** {{.*}}, i8* null)
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