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driver-i386.c (host_detect_local_cpu): Detect lack of zmm/k regs support. 

gcc/
2014-09-16  Ilya Tocar  <ilya.tocar@intel.com>

        * config/i386/driver-i386.c (host_detect_local_cpu): Detect lack of
        zmm/k regs support.

testsuite/
2014-09-16  Ilya Tocar  <ilya.tocar@intel.com>

        * gcc.target/i386/avx512f-os-support.h: Remove magic number.

From-SVN: r215297
This commit is contained in:
Ilya Tocar 2014-09-16 11:57:56 +00:00 committed by Ilya Tocar
parent 0774c1603b
commit 2c12f2f4d4
4 changed files with 41 additions and 2 deletions
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5
gcc/ChangeLog
View File

@ -1,3 +1,8 @@
2014-09-16 Ilya Tocar <ilya.tocar@intel.com>
* config/i386/driver-i386.c (host_detect_local_cpu): Detect lack of
zmm/k regs support.
2014-09-16 Alexander Ivchenko <alexander.ivchenko@intel.com>
Maxim Kuznetsov <maxim.kuznetsov@intel.com>
Anna Tikhonova <anna.tikhonova@intel.com>

17
gcc/config/i386/driver-i386.c
View File

@ -533,6 +533,9 @@ const char *host_detect_local_cpu (int argc, const char **argv)
#define XSTATE_FP 0x1
#define XSTATE_SSE 0x2
#define XSTATE_YMM 0x4
#define XSTATE_OPMASK 0x20
#define XSTATE_ZMM 0x40
#define XSTATE_HI_ZMM 0x80
if (has_osxsave)
asm (".byte 0x0f; .byte 0x01; .byte 0xd0"
: "=a" (eax), "=d" (edx)
@ -554,6 +557,20 @@ const char *host_detect_local_cpu (int argc, const char **argv)
has_xsavec = 0;
}
if (!has_osxsave
|| (eax &
(XSTATE_SSE | XSTATE_YMM | XSTATE_OPMASK | XSTATE_ZMM | XSTATE_HI_ZMM))
!= (XSTATE_SSE | XSTATE_YMM | XSTATE_OPMASK | XSTATE_ZMM | XSTATE_HI_ZMM))
{
has_avx512f = 0;
has_avx512er = 0;
has_avx512pf = 0;
has_avx512cd = 0;
has_avx512dq = 0;
has_avx512bw = 0;
has_avx512vl = 0;
}
if (!arch)
{
if (vendor == signature_AMD_ebx

4
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,7 @@
2014-09-16 Ilya Tocar <ilya.tocar@intel.com>
* gcc.target/i386/avx512f-os-support.h: Remove magic number.
2014-09-16 Jakub Jelinek <jakub@redhat.com>
PR fortran/56408

17
gcc/testsuite/gcc.target/i386/avx512f-os-support.h
View File

@ -1,10 +1,23 @@
/* Check if the OS supports executing AVX512F instructions. */
#define XCR_XFEATURE_ENABLED_MASK 0x0
#define XSTATE_FP 0x1
#define XSTATE_SSE 0x2
#define XSTATE_YMM 0x4
#define XSTATE_OPMASK 0x20
#define XSTATE_ZMM 0x40
#define XSTATE_HI_ZMM 0x80
static int
avx512f_os_support (void)
{
unsigned int eax, edx;
unsigned int ecx = XCR_XFEATURE_ENABLED_MASK;
unsigned int mask = XSTATE_SSE | XSTATE_YMM | XSTATE_OPMASK
| XSTATE_ZMM | XSTATE_HI_ZMM;
__asm__ ("xgetbv" : "=a" (eax), "=d" (edx) : "c" (0));
return (eax & 230) == 230;
__asm__ ("xgetbv" : "=a" (eax), "=d" (edx) : "c" (ecx));
return ((eax & mask) == mask);
}