[gcc r15-1908] i386: Correct AVX10 CPUID emulation

[Haochen Jiang via Gcc-cvs]

https://gcc.gnu.org/g:298a576f00c49b8f4529ea2f87b9943a32743250

commit r15-1908-g298a576f00c49b8f4529ea2f87b9943a32743250
Author: Haochen Jiang <haochen.ji...@intel.com>
Date:   Tue Jul 9 16:31:02 2024 +0800

    i386: Correct AVX10 CPUID emulation
    
    AVX10 Documentaion has specified ecx value as 0 for AVX10 version and
    vector size under 0x24 subleaf. Although for ecx=1, the bits are all
    reserved for now, we still need to specify ecx as 0 to avoid dirty
    value in ecx.
    
    gcc/ChangeLog:
    
            * common/config/i386/cpuinfo.h (get_available_features): Correct
            AVX10 CPUID emulation to specify ecx value.

Diff:
---
 gcc/common/config/i386/cpuinfo.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/gcc/common/config/i386/cpuinfo.h b/gcc/common/config/i386/cpuinfo.h
index 936039725ab6..2ae77d335d24 100644
--- a/gcc/common/config/i386/cpuinfo.h
+++ b/gcc/common/config/i386/cpuinfo.h
@@ -998,10 +998,10 @@ get_available_features (struct __processor_model 
*cpu_model,
        }
     }
 
-  /* Get Advanced Features at level 0x24 (eax = 0x24).  */
+  /* Get Advanced Features at level 0x24 (eax = 0x24, ecx = 0).  */
   if (avx10_set && max_cpuid_level >= 0x24)
     {
-      __cpuid (0x24, eax, ebx, ecx, edx);
+      __cpuid_count (0x24, 0, eax, ebx, ecx, edx);
       version = ebx & 0xff;
       if (ebx & bit_AVX10_256)
        switch (version)