diff mbox series

[gcc12,backport] i386: Call get_available_features for all CPUs with max_level >= 1 [PR100758]

Message ID 20230309021620.19719-1-mayshao-oc@zhaoxin.com
State Unresolved
Headers
Series [gcc12,backport] i386: Call get_available_features for all CPUs with max_level >= 1 [PR100758] |

Checks

Context Check Description
snail/gcc-patch-check warning Git am fail log

Commit Message

Mayshao-oc March 9, 2023, 2:16 a.m. UTC 
  From: mayshao-oc <mayshao-oc@zhaoxin.com>

Hi Jakub:
  This is backport of the fix for PR target/100758 from mainline to the gcc12 release branch. Because the bug still exists in gcc12 on Zhaoxin platform, and it will incur ISA feature detection failure, we want to fix it as the mainline.This patch has been retested against the gcc12 branch on Intel, Amd, Zhaoxin with make bootstrap and make -k check without failure. Ok for the gcc12 branch?

BR
Mayshao

gcc/ChangeLog:
	PR target/100758
	* common/config/i386/cpuinfo.h (cpu_indicator_init): Call get_available_features
	for all CPUs with max_level >= 1, rather than just Intel, AMD.
---
 gcc/common/config/i386/cpuinfo.h | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)
diff mbox series

Patch

diff --git a/gcc/common/config/i386/cpuinfo.h b/gcc/common/config/i386/cpuinfo.h
index 388f4798406..0333da56ba5 100644
--- a/gcc/common/config/i386/cpuinfo.h
+++ b/gcc/common/config/i386/cpuinfo.h
@@ -910,6 +910,10 @@  cpu_indicator_init (struct __processor_model *cpu_model,
   extended_model = (eax >> 12) & 0xf0;
   extended_family = (eax >> 20) & 0xff;
 
+  /* Find available features. */
+  get_available_features (cpu_model, cpu_model2, cpu_features2,
+			  ecx, edx);
+
   if (vendor == signature_INTEL_ebx)
     {
       /* Adjust model and family for Intel CPUS. */
@@ -924,9 +928,6 @@  cpu_indicator_init (struct __processor_model *cpu_model,
       cpu_model2->__cpu_family = family;
       cpu_model2->__cpu_model = model;
 
-      /* Find available features. */
-      get_available_features (cpu_model, cpu_model2, cpu_features2,
-			      ecx, edx);
       /* Get CPU type.  */
       get_intel_cpu (cpu_model, cpu_model2, cpu_features2);
       cpu_model->__cpu_vendor = VENDOR_INTEL;
@@ -943,9 +944,6 @@  cpu_indicator_init (struct __processor_model *cpu_model,
       cpu_model2->__cpu_family = family;
       cpu_model2->__cpu_model = model;
 
-      /* Find available features. */
-      get_available_features (cpu_model, cpu_model2, cpu_features2,
-			      ecx, edx);
       /* Get CPU type.  */
       get_amd_cpu (cpu_model, cpu_model2, cpu_features2);
       cpu_model->__cpu_vendor = VENDOR_AMD;