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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 `{{.*}} `.
18 lines
465 B
C++
18 lines
465 B
C++
// REQUIRES: arm-registered-target
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// RUN: %clang_cc1 -triple armv7-none-linux-androideabi -target-abi aapcs-linux -mfloat-abi hard -x c++ -emit-llvm %s -o - | FileCheck %s
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struct Vec2 {
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union { struct { float x, y; };
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float data[2];
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};
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};
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// CHECK: define{{.*}} arm_aapcs_vfpcc %struct.Vec2 @_Z7getVec2v()
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// CHECK: ret %struct.Vec2
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Vec2 getVec2() {
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Vec2 out;
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union { Vec2* v; unsigned char* u; } x;
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x.v = &out;
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return out;
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}
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