Hi Maintainers,
Bootstrapped and tested on x86_64-linux, Ok to backport to GCC 16.x branch ??
Regards,
Dipesh
- Moved bit_AVX512BMM to extended features section.
- Added test for __builtin_cpu_supports ("avx512bmm") compile and runtime tests.
gcc/ChangeLog:
* common/config/i386/cpuinfo.h (get_available_features): Detect
AVX512BMM from
extended features instead of standard leaf.
* config/i386/cpuid.h (bit_AVX512BMM): Move to extended features
section.
gcc/testsuite/ChangeLog:
* gcc.target/i386/avx512bmm-check-1.c: New test.
* gcc.target/i386/avx512bmm-check-2.c: New test.
* gcc.target/i386/avx512bmm-check-3.c: New test.
(cherry picked from commit 33053605189f2b903b1a0d730a1feec166e89735)
---
gcc/common/config/i386/cpuinfo.h | 16 +++------------
gcc/config/i386/cpuid.h | 4 +---
.../gcc.target/i386/avx512bmm-check-1.c | 6 ++++++
.../gcc.target/i386/avx512bmm-check-2.c | 20 +++++++++++++++++++
.../gcc.target/i386/avx512bmm-check-3.c | 6 ++++++
5 files changed, 36 insertions(+), 16 deletions(-)
create mode 100644 gcc/testsuite/gcc.target/i386/avx512bmm-check-1.c
create mode 100644 gcc/testsuite/gcc.target/i386/avx512bmm-check-2.c
create mode 100644 gcc/testsuite/gcc.target/i386/avx512bmm-check-3.c
diff --git a/gcc/common/config/i386/cpuinfo.h b/gcc/common/config/i386/cpuinfo.h
index f59090c8cde..e07d01991ca 100644
--- a/gcc/common/config/i386/cpuinfo.h
+++ b/gcc/common/config/i386/cpuinfo.h
@@ -1112,16 +1112,6 @@ get_available_features (struct __processor_model
*cpu_model,
}
}
- /* Get Advanced Features at level 0x21 (eax = 0x21). */
- if (max_cpuid_level >= 0x21)
- {
- __cpuid (0x21, eax, ebx, ecx, edx);
- if (eax & bit_AVX512BMM)
- {
- set_feature (FEATURE_AVX512BMM);
- }
- }
-
/* Get Advanced Features at level 0x24 (eax = 0x24, ecx = 0). */
if (avx10_set && max_cpuid_level >= 0x24)
{
@@ -1196,9 +1186,9 @@ get_available_features (struct __processor_model
*cpu_model,
{
__cpuid (0x80000021, eax, ebx, ecx, edx);
if (eax & bit_AMD_PREFETCHI)
- {
- set_feature (FEATURE_PREFETCHI);
- }
+ set_feature (FEATURE_PREFETCHI);
+ if (eax & bit_AVX512BMM)
+ set_feature (FEATURE_AVX512BMM);
}
#undef set_feature
diff --git a/gcc/config/i386/cpuid.h b/gcc/config/i386/cpuid.h
index c48556afa6e..0b5e6cc99a0 100644
--- a/gcc/config/i386/cpuid.h
+++ b/gcc/config/i386/cpuid.h
@@ -75,6 +75,7 @@
/* Extended Features (%eax == 0x80000021) */
/* %eax */
#define bit_AMD_PREFETCHI (1 << 20)
+#define bit_AVX512BMM (1 << 23)
/* Extended Features Leaf (%eax == 7, %ecx == 0) */
/* %ebx */
@@ -167,9 +168,6 @@
#define bit_AESKLE ( 1<<0 )
#define bit_WIDEKL ( 1<<2 )
-/* Sub leaf (%eax == 0x21) */
-#define bit_AVX512BMM ( 1<<23 )
-
/* AMX sub leaf (%eax == 0x1e, %ecx == 1) */
/* %eax */
#define bit_AMX_FP8 (1 << 4)
diff --git a/gcc/testsuite/gcc.target/i386/avx512bmm-check-1.c
b/gcc/testsuite/gcc.target/i386/avx512bmm-check-1.c
new file mode 100644
index 00000000000..176b06eb09a
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/avx512bmm-check-1.c
@@ -0,0 +1,6 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -march=znver6" } */
+
+#ifndef __AVX512BMM__
+# error AVX512BMM should be enabled for target znver6.
+#endif
diff --git a/gcc/testsuite/gcc.target/i386/avx512bmm-check-2.c
b/gcc/testsuite/gcc.target/i386/avx512bmm-check-2.c
new file mode 100644
index 00000000000..956ae2d2acb
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/avx512bmm-check-2.c
@@ -0,0 +1,20 @@
+/* { dg-do run } */
+/* { dg-options "-O2 -march=native" } */
+
+int
+main ()
+{
+ if (__builtin_cpu_supports ("avx512bmm"))
+ {
+#ifndef __AVX512BMM__
+ __builtin_abort ();
+#endif
+ }
+ else
+ {
+#ifdef __AVX512BMM__
+ __builtin_abort ();
+#endif
+ }
+ return 0;
+}
diff --git a/gcc/testsuite/gcc.target/i386/avx512bmm-check-3.c
b/gcc/testsuite/gcc.target/i386/avx512bmm-check-3.c
new file mode 100644
index 00000000000..25ffeb8c87b
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/avx512bmm-check-3.c
@@ -0,0 +1,6 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -march=native -mno-avx512bmm" } */
+
+#if defined(__ZNVER6__) && defined(__AVX512BMM__)
+# error AVX512BMM should be disabled for native detection of target znver6
with -mno-avx512bmm.
+#endif
--
2.34.1
