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.
38 lines
774 B
C++
38 lines
774 B
C++
// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -o - %s | FileCheck %s
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struct X {
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X();
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~X();
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};
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struct Y {
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Y();
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~Y();
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};
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// CHECK-LABEL: define{{.*}} void @_Z1fiPPKc(
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void f(int argc, const char* argv[]) {
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// CHECK: call void @_ZN1XC1Ev
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X x;
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// CHECK: call i8* @llvm.stacksave(
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const char *argv2[argc];
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// CHECK: call void @_ZN1YC1Ev
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Y y;
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for (int i = 0; i != argc; ++i)
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argv2[i] = argv[i];
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// CHECK: call void @_ZN1YD1Ev
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// CHECK: call void @llvm.stackrestore
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// CHECK: call void @_ZN1XD1Ev
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// CHECK: ret void
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}
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namespace PR11744 {
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// Make sure this doesn't crash; there was a use-after-free issue
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// for this testcase.
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template<typename T> int f(int n) {
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T arr[3][n];
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return 3;
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}
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int test = f<int>(0);
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}
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