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 `{{.*}} `.
27 lines
1.4 KiB
C++
27 lines
1.4 KiB
C++
// RUN: %clang_cc1 %s -emit-llvm -o - -triple x86_64-linux-gnu | FileCheck %s
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struct A {
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A(const char *);
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};
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// CHECK: @arr ={{.*}} global [3 x %struct.S] zeroinitializer
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// CHECK: @.str = {{.*}}constant [6 x i8] c"hello\00"
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// CHECK: @.str.1 = {{.*}}constant [6 x i8] c"world\00"
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// CHECK: @.str.2 = {{.*}}constant [8 x i8] c"goodbye\00"
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struct S {
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int n;
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A s;
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} arr[] = {
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{ 0, "hello" },
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{ 1, "world" },
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{ 2, "goodbye" }
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};
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// CHECK: store i32 0, i32* getelementptr inbounds ([3 x %struct.S], [3 x %struct.S]* @arr, i64 0, i64 0, i32 0)
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// CHECK: call void @_ZN1AC1EPKc(%struct.A* {{[^,]*}} getelementptr inbounds ([3 x %struct.S], [3 x %struct.S]* @arr, i64 0, i64 0, i32 1), i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str, i64 0, i64 0))
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// CHECK: store i32 1, i32* getelementptr inbounds ([3 x %struct.S], [3 x %struct.S]* @arr, i64 0, i64 1, i32 0)
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// CHECK: call void @_ZN1AC1EPKc(%struct.A* {{[^,]*}} getelementptr inbounds ([3 x %struct.S], [3 x %struct.S]* @arr, i64 0, i64 1, i32 1), i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.1, i64 0, i64 0))
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// CHECK: store i32 2, i32* getelementptr inbounds ([3 x %struct.S], [3 x %struct.S]* @arr, i64 0, i64 2, i32 0)
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// CHECK: call void @_ZN1AC1EPKc(%struct.A* {{[^,]*}} getelementptr inbounds ([3 x %struct.S], [3 x %struct.S]* @arr, i64 0, i64 2, i32 1), i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.2, i64 0, i64 0))
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