fd739804e0
For a default visibility external linkage definition, dso_local is set for ELF
-fno-pic/-fpie and COFF and Mach-O. Since default clang -cc1 for ELF is similar
to -fpic ("PIC Level" is not set), this nuance causes unneeded binary format differences.
To make emitted IR similar, ELF -cc1 -fpic will default to -fno-semantic-interposition,
which sets dso_local for default visibility external linkage definitions.
To make this flip smooth and enable future (dso_local as definition default),
this patch replaces (function) `define ` with `define{{.*}} `,
(variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} `.
30 lines
1.0 KiB
C
30 lines
1.0 KiB
C
// RUN: %clang_cc1 -triple i386-unknown-unknown -fexceptions -emit-llvm -o - %s | FileCheck %s
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// RUN: %clang_cc1 -triple i386-unknown-unknown -emit-llvm -o - %s | FileCheck -check-prefix CHECK-NOEXC %s
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int opaque();
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// CHECK: define{{.*}} [[INT:i.*]] @test0() [[TF:#[0-9]+]] {
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// CHECK-NOEXC: define{{.*}} [[INT:i.*]] @test0() [[NUW:#[0-9]+]] {
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int test0(void) {
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return opaque();
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}
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// <rdar://problem/8087431>: locally infer nounwind at -O0
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// CHECK: define{{.*}} [[INT:i.*]] @test1() [[NUW:#[0-9]+]] {
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// CHECK-NOEXC: define{{.*}} [[INT:i.*]] @test1() [[NUW]] {
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int test1(void) {
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return 0;
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}
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// <rdar://problem/8283071>: not for weak functions
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// CHECK: define weak{{.*}} [[INT:i.*]] @test2() [[TF]] {
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// CHECK-NOEXC: define weak{{.*}} [[INT:i.*]] @test2() [[NUW]] {
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__attribute__((weak)) int test2(void) {
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return 0;
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}
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// CHECK: attributes [[TF]] = { noinline optnone "{{.*}} }
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// CHECK: attributes [[NUW]] = { noinline nounwind{{.*}} }
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// CHECK-NOEXC: attributes [[NUW]] = { noinline nounwind{{.*}} }
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