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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 `{{.*}} `.
12 lines
353 B
C++
12 lines
353 B
C++
// RUN: %clang_cc1 -emit-llvm %s -o - -triple=x86_64-pc-linux-gnu | FileCheck %s
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extern int aa __attribute__((section(".sdata")));
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// CHECK-DAG: @aa = external global i32, section ".sdata", align 4
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extern int bb __attribute__((section(".sdata"))) = 1;
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// CHECK-DAG: @bb ={{.*}} global i32 1, section ".sdata", align 4
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int foo() {
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return aa + bb;
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}
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