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 `{{.*}} `.
38 lines
1.6 KiB
C
38 lines
1.6 KiB
C
// RUN: %clang_cc1 -w -ffreestanding -triple x86_64-linux-gnu -target-feature +avx -emit-llvm -o - %s | FileCheck %s --check-prefixes=CHECK,AVX
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// RUN: %clang_cc1 -w -ffreestanding -triple x86_64-linux-gnu -target-feature +avx512f -emit-llvm -o - %s | FileCheck %s --check-prefixes=CHECK,AVX512
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// Test Clang 11 and earlier behavior
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// RUN: %clang_cc1 -w -ffreestanding -triple x86_64-linux-gnu -target-feature +avx -fclang-abi-compat=10.0 -emit-llvm -o - %s | FileCheck %s --check-prefixes=CHECK-LEGACY,AVX
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// RUN: %clang_cc1 -w -ffreestanding -triple x86_64-linux-gnu -target-feature +avx512f -fclang-abi-compat=11.0 -emit-llvm -o - %s | FileCheck %s --check-prefixes=CHECK-LEGACY,AVX512-LEGACY
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// RUN: %clang_cc1 -w -ffreestanding -triple x86_64-scei-ps4 -target-feature +avx -emit-llvm -o - %s | FileCheck %s --check-prefix=CHECK-LEGACY
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// This tests verifies that a union parameter should pass by a vector regitster whose first eightbyte is SSE and the other eightbytes are SSEUP.
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typedef int __m256 __attribute__ ((__vector_size__ (32)));
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typedef int __m512 __attribute__ ((__vector_size__ (64)));
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union M256 {
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double d;
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__m256 m;
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};
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union M512 {
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double d;
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__m512 m;
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};
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extern void foo1(union M256 A);
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extern void foo2(union M512 A);
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union M256 m1;
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union M512 m2;
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// CHECK-LABEL: define{{.*}} void @test()
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// CHECK: call void @foo1(<4 x double>
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// CHECK-LEGACY: call void @foo1(%union.M256* byval(%union.M256) align 32
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// AVX: call void @foo2(%union.M512* byval(%union.M512) align 64
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// AVX512: call void @foo2(<8 x double>
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// AVX512-LEGACY: call void @foo2(%union.M512* byval(%union.M512) align 64
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void test() {
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foo1(m1);
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foo2(m2);
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}
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