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 `{{.*}} `.
20 lines
409 B
C
20 lines
409 B
C
// RUN: %clang_cc1 -emit-llvm -triple i386-linux-gnu -o %t %s
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// RUN: FileCheck --input-file=%t %s
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// PR10392
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#define push(foo) push(default)
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#pragma GCC visibility push(hidden)
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int v1;
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// CHECK: @v1 = hidden global i32 0, align 4
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#pragma GCC visibility pop
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int v2;
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// CHECK: @v2 ={{.*}} global i32 0, align 4
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_Pragma("GCC visibility push(hidden)");
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int v3;
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// CHECK: @v3 = hidden global i32 0, align 4
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