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Allow -mno-evex512 usage

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gcc/ChangeLog:

	* config/i386/i386.opt: Allow -mno-evex512.

gcc/testsuite/ChangeLog:

	* gcc.target/i386/noevex512-1.c: New test.
	* gcc.target/i386/noevex512-2.c: Ditto.
	* gcc.target/i386/noevex512-3.c: Ditto.
This commit is contained in:
Haochen Jiang 2023-09-08 14:31:41 +08:00 committed by liuhongt
parent fc18bcbdfc
commit 2b1b224271
4 changed files with 40 additions and 1 deletions
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2
gcc/config/i386/i386.opt
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@ -1312,5 +1312,5 @@ Target Alias(mtune-ctrl=, use_scatter, ^use_scatter)
Enable vectorization for scatter instruction.
mevex512
Target RejectNegative Mask(ISA2_EVEX512) Var(ix86_isa_flags2) Save
Target Mask(ISA2_EVEX512) Var(ix86_isa_flags2) Save
Support 512 bit vector built-in functions and code generation.

13
gcc/testsuite/gcc.target/i386/noevex512-1.c Normal file
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@ -0,0 +1,13 @@
/* { dg-do compile } */
/* { dg-options "-O0 -march=x86-64 -mavx512f -mno-evex512 -Wno-psabi" } */
/* { dg-final { scan-assembler-not ".%zmm" } } */
typedef double __m512d __attribute__ ((__vector_size__ (64), __may_alias__));
__m512d
foo ()
{
__m512d a, b;
a = a + b;
return a;
}

13
gcc/testsuite/gcc.target/i386/noevex512-2.c Normal file
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@ -0,0 +1,13 @@
/* { dg-do compile } */
/* { dg-options "-O2 -march=x86-64 -mavx512bw -mno-evex512" } */
#include <immintrin.h>
long long
foo (long long c)
{
register long long a __asm ("k7") = c;
long long b = foo (a);
asm volatile ("" : "+k" (b)); /* { dg-error "inconsistent operand constraints in an 'asm'" } */
return b;
}

13
gcc/testsuite/gcc.target/i386/noevex512-3.c Normal file
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@ -0,0 +1,13 @@
/* { dg-do compile } */
/* { dg-options "-march=x86-64 -Wno-psabi -mavx512f" } */
/* { dg-final { scan-assembler-not ".%zmm" } } */
typedef double __m512d __attribute__ ((__vector_size__ (64), __may_alias__));
__attribute__ ((target ("no-evex512"))) __m512d
foo ()
{
__m512d a, b;
a = a + b;
return a;
}