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 `{{.*}} `.
9 lines
808 B
C
9 lines
808 B
C
// RUN: %clang_cc1 -triple x86_64-unknown-unknown -emit-llvm -o - %s | FileCheck %s
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// CHECK: @g1 ={{.*}} global [2 x i8*] [i8* getelementptr (i8, i8* getelementptr inbounds ([0 x %struct.anon], [0 x %struct.anon]* @g0, i32 0, i32 0, i32 0), i64 -2), i8* getelementptr (i8, i8* getelementptr inbounds ([0 x %struct.anon], [0 x %struct.anon]* @g0, i32 0, i32 0, i32 0), i64 -46)], align 16
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// CHECK: @g2 ={{.*}} global [2 x i8*] [i8* getelementptr (i8, i8* getelementptr inbounds ([0 x %struct.anon], [0 x %struct.anon]* @g0, i32 0, i32 0, i32 0), i64 -2), i8* getelementptr (i8, i8* getelementptr inbounds ([0 x %struct.anon], [0 x %struct.anon]* @g0, i32 0, i32 0, i32 0), i64 -46)], align 16
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extern struct { unsigned char a, b; } g0[];
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void *g1[] = {g0 + -1, g0 + -23 };
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void *g2[] = {g0 - 1, g0 - 23 };
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