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.
40 lines
693 B
C
40 lines
693 B
C
// RUN: %clang_cc1 -triple x86_64-darwin-apple -emit-llvm -o - %s | FileCheck %s
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// rdar://9609649
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__private_extern__ const int I;
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__private_extern__ const int J = 927;
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__private_extern__ const int K;
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const int K = 37;
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const int L = 10;
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__private_extern__ const int L;
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__private_extern__ int M;
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int M = 20;
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__private_extern__ int N;
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int N;
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__private_extern__ int O;
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int O=1;
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__private_extern__ int P;
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extern int P;
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void bar(int);
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void foo() {
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bar(I);
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}
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// CHECK: @J = hidden constant
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// CHECK: @K = hidden constant
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// CHECK: @L ={{.*}} constant
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// CHECK: @M = hidden global
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// CHECK: @O = hidden global
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// CHECK: @I = external hidden
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// CHECK: @N = hidden global
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// CHECK-NOT: @P
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