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 `{{.*}} `.
29 lines
483 B
C
29 lines
483 B
C
// RUN: %clang_cc1 -triple i386-unknown-unknown -O2 -emit-llvm -o - %s | FileCheck %s
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// CHECK-LABEL: define{{.*}} i32 @f0()
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// CHECK: ret i32 0
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// CHECK-LABEL: define{{.*}} i32 @f1()
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// CHECK: ret i32 0
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// CHECK-LABEL: define{{.*}} i32 @f2()
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// CHECK: ret i32 0
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// <rdar://problem/6113085>
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struct s0 {
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int x, y;
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};
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int f0() {
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struct s0 x = {0};
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return x.y;
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}
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int f1() {
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struct s0 x[2] = { {0} };
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return x[1].x;
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}
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int f2() {
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int x[2] = { 0 };
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return x[1];
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}
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