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1a83d06768
Summary:
When requirement imposed by __target__ attributes on functions
are not satisfied, prefer printing those requirements, which
are explicitly mentioned in the attributes.
This makes such messages more useful, e.g. printing avx512f instead of avx2
in the following scenario:
```
$ cat foo.c
static inline void __attribute__((__always_inline__, __target__("avx512f")))
x(void)
{
}
int main(void)
{
x();
}
$ clang foo.c
foo.c:7:2: error: always_inline function 'x' requires target feature 'avx2', but would be inlined into function 'main' that is compiled without support for 'avx2'
x();
^
1 error generated.
```
bugzilla: https://bugs.llvm.org/show_bug.cgi?id=37338
Reviewers: craig.topper, echristo, dblaikie
Reviewed By: craig.topper, echristo
Differential Revision: https://reviews.llvm.org/D46541
llvm-svn: 334174
47 lines
1.7 KiB
C
47 lines
1.7 KiB
C
// RUN: %clang_cc1 %s -triple=x86_64-linux-gnu -S -verify -o - -D NEED_AVX_1
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// RUN: %clang_cc1 %s -triple=x86_64-linux-gnu -S -verify -o - -D NEED_AVX_2
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// RUN: %clang_cc1 %s -triple=x86_64-linux-gnu -S -verify -o - -D NEED_AVX512f
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// RUN: %clang_cc1 %s -triple=x86_64-linux-gnu -target-feature +movdir64b -S -verify -o - -D NEED_MOVDIRI
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// RUN: %clang_cc1 %s -triple=x86_64-linux-gnu -target-feature +avx512vnni -target-feature +movdiri -S -verify -o - -D NEED_CLWB
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#define __MM_MALLOC_H
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#include <x86intrin.h>
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#if NEED_AVX_1
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int baz(__m256i a) {
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return _mm256_extract_epi32(a, 3); // expected-error {{'__builtin_ia32_vec_ext_v8si' needs target feature avx}}
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}
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#endif
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#if NEED_AVX_2
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__m128 need_avx(__m128 a, __m128 b) {
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return _mm_cmp_ps(a, b, 0); // expected-error {{'__builtin_ia32_cmpps' needs target feature avx}}
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}
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#endif
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#if NEED_AVX512f
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unsigned short need_avx512f(unsigned short a, unsigned short b) {
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return __builtin_ia32_korhi(a, b); // expected-error {{'__builtin_ia32_korhi' needs target feature avx512f}}
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}
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#endif
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#if NEED_MOVDIRI
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void need_movdiri(unsigned int *a, unsigned int b) {
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__builtin_ia32_directstore_u32(a, b); // expected-error {{'__builtin_ia32_directstore_u32' needs target feature movdiri}}
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}
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#endif
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#if NEED_CLWB
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static __inline__ void
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__attribute__((__always_inline__, __nodebug__, __target__("avx512vnni,clwb,movdiri,movdir64b")))
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func(unsigned int *a, unsigned int b)
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{
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__builtin_ia32_directstore_u32(a, b);
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}
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void need_clwb(unsigned int *a, unsigned int b) {
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func(a, b); // expected-error {{always_inline function 'func' requires target feature 'clwb', but would be inlined into function 'need_clwb' that is compiled without support for 'clwb'}}
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}
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#endif
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