Hi Jakub:
This is backport of the fix for PR target/100758 from mainline to the gcc11
release branch. Because the bug still exists in gcc11 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 gcc11 branch on
Intel,Amd,Zhaoxin with make bootstrap and make -k check without failure. Ok for
the gcc11 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 18ff71ac5ad..00b5eee21d4 100644
--- a/gcc/common/config/i386/cpuinfo.h
+++ b/gcc/common/config/i386/cpuinfo.h
@@ -882,6 +882,10 @@ 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. */
@@ -896,9 +900,6 @@ 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;
@@ -915,9 +916,6 @@ 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
