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 `{{.*}} `.
31 lines
617 B
C
31 lines
617 B
C
// Test returning a single element aggregate value containing a double.
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// RUN: %clang_cc1 -triple i686-linux %s -emit-llvm -o - | FileCheck %s --check-prefix=X86_32
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// RUN: %clang_cc1 %s -emit-llvm -o -
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struct X {
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double D;
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};
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struct Y {
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struct X x;
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};
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struct Y bar();
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void foo(struct Y *P) {
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*P = bar();
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}
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struct Y bar() {
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struct Y a;
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a.x.D = 0;
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return a;
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}
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// X86_32: define{{.*}} void @foo(%struct.Y* %P)
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// X86_32: call void @bar(%struct.Y* sret(%struct.Y) align 4 %{{[^),]*}})
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// X86_32: define{{.*}} void @bar(%struct.Y* noalias sret(%struct.Y) align 4 %{{[^,)]*}})
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// X86_32: ret void
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