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 `{{.*}} `.
26 lines
1.2 KiB
C
26 lines
1.2 KiB
C
// REQUIRES: x86-registered-target
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// RUN: %clang_cc1 -fms-extensions %s -triple=i686-unknown-unknown -emit-llvm -o - | FileCheck %s --check-prefix=X86
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// RUN: %clang_cc1 -fms-extensions %s -triple=x86_64-unknown-unknown -emit-llvm -o - | FileCheck %s --check-prefix=X64
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typedef int v4si __attribute__ ((vector_size (16)));
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v4si rep() {
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// X86-LABEL: define{{.*}} <4 x i32> @rep
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// X86: %[[ALLOCA0:.*]] = alloca <4 x i32>, align 16
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// X86: %[[ALLOCA1:.*]] = alloca <4 x i32>, align 16
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// X86: %[[BITCAST:.*]] = bitcast <4 x i32>* %[[ALLOCA0]] to i128*
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// X86: %[[ASM:.*]] = call i64 asm sideeffect inteldialect "", "=A,~{dirflag},~{fpsr},~{flags}"()
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// X86: %[[ZEXT:.*]] = zext i64 %[[ASM]] to i128
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// X86: store i128 %[[ZEXT]], i128* %[[BITCAST]], align 16
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// X86: %[[LOAD:.*]] = load <4 x i32>, <4 x i32>* %[[ALLOCA1]], align 16
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// X86: ret <4 x i32> %[[LOAD]]
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//
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// X64-LABEL: define{{.*}} <4 x i32> @rep
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// X64: %[[ALLOCA:.*]] = alloca <4 x i32>, align 16
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// X64: call void asm sideeffect inteldialect "", "~{dirflag},~{fpsr},~{flags}"()
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// X64: %[[LOAD:.*]] = load <4 x i32>, <4 x i32>* %[[ALLOCA]], align 16
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// X64: ret <4 x i32> %[[LOAD]]
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v4si res;
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__asm {}
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return res;
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}
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