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 `{{.*}} `.
21 lines
434 B
C++
21 lines
434 B
C++
// RUN: %clang_cc1 -triple=i686-pc-unknown -std=c++11 %s -emit-llvm -o - | FileCheck %s
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// This was a problem in Sema, but only shows up as noinline missing
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// in CodeGen.
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// CHECK: define{{.*}} i32 @_Z15noduplicatedfuni(i32 %a) [[NI:#[0-9]+]]
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int noduplicatedfun [[clang::noduplicate]] (int a) {
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return a+1;
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}
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int main() {
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return noduplicatedfun(5);
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}
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// CHECK: attributes [[NI]] = { noduplicate {{.*}}nounwind{{.*}} }
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