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.
32 lines
989 B
C++
32 lines
989 B
C++
// RUN: %clang_cc1 %s -triple=x86_64-apple-darwin10 -emit-llvm -O3 -fno-experimental-new-pass-manager -o - | FileCheck %s
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// RUN: %clang_cc1 %s -triple=x86_64-apple-darwin10 -emit-llvm -O3 -fexperimental-new-pass-manager -o - | FileCheck %s
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// RUN: %clang_cc1 %s -triple=x86_64-windows-gnu -emit-llvm -o - | FileCheck %s -check-prefix MINGW64
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struct A {
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virtual int vf1() { return 1; }
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virtual int vf2() { return 2; }
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};
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int f(A* a, int (A::*fp)()) {
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return (a->*fp)();
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}
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// CHECK-LABEL: define{{.*}} i32 @_Z2g1v()
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// CHECK-NOT: }
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// CHECK: ret i32 1
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// MINGW64-LABEL: define dso_local i32 @_Z2g1v()
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// MINGW64: call i32 @_Z1fP1AMS_FivE(%struct.A* %{{.*}}, { i64, i64 }* %{{.*}})
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int g1() {
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A a;
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return f(&a, &A::vf1);
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}
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// CHECK-LABEL: define{{.*}} i32 @_Z2g2v()
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// CHECK-NOT: }
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// CHECK: ret i32 2
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// MINGW64-LABEL: define dso_local i32 @_Z2g2v()
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// MINGW64: call i32 @_Z1fP1AMS_FivE(%struct.A* %{{.*}}, { i64, i64 }* %{{.*}})
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int g2() {
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A a;
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return f(&a, &A::vf2);
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}
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