From: mayshao-oc <[email protected]>
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 --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;
--
2.17.1
