[glibc] <sys/platform/x86.h>: Add AMX-COMPLEX support

[glibc] <sys/platform/x86.h>: Add AMX-COMPLEX support

[H.J. Lu]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=b05521c916790dbaeb953fca7b979a889d868db2

commit b05521c916790dbaeb953fca7b979a889d868db2
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Wed Apr 5 09:21:43 2023 -0700

    <sys/platform/x86.h>: Add AMX-COMPLEX support
    
    Add AMX-COMPLEX support to <sys/platform/x86.h>.
    Reviewed-by: Noah Goldstein <goldstein.w.n@gmail.com>

Diff:
---
 manual/platform.texi               | 3 +++
 sysdeps/x86/bits/platform/x86.h    | 1 +
 sysdeps/x86/cpu-features.c         | 2 ++
 sysdeps/x86/include/cpu-features.h | 3 +++
 sysdeps/x86/tst-get-cpu-features.c | 2 ++
 5 files changed, 11 insertions(+)

diff --git a/manual/platform.texi b/manual/platform.texi
index 1e120993d7..e7448ffc1a 100644
--- a/manual/platform.texi
+++ b/manual/platform.texi
@@ -197,6 +197,9 @@ The supported processor features are:
 @item
 @code{AMX_BF16} -- Tile computational operations on bfloat16 numbers.
 
+@item
+@code{AMX_COMPLEX} -- Tile computational operations on complex FP16 numbers.
+
 @item
 @code{AMX_INT8} -- Tile computational operations on 8-bit numbers.
 
diff --git a/sysdeps/x86/bits/platform/x86.h b/sysdeps/x86/bits/platform/x86.h
index d8ba33bd42..96eb4c070d 100644
--- a/sysdeps/x86/bits/platform/x86.h
+++ b/sysdeps/x86/bits/platform/x86.h
@@ -310,6 +310,7 @@ enum
 
   x86_cpu_AVX_VNNI_INT8		= x86_cpu_index_7_ecx_1_edx + 4,
   x86_cpu_AVX_NE_CONVERT	= x86_cpu_index_7_ecx_1_edx + 5,
+  x86_cpu_AMX_COMPLEX		= x86_cpu_index_7_ecx_1_edx + 8,
 
   x86_cpu_index_19_ebx
     = (CPUID_INDEX_19 * 8 * 4 * sizeof (unsigned int)
diff --git a/sysdeps/x86/cpu-features.c b/sysdeps/x86/cpu-features.c
index dfd1b85dce..c2bea6a32d 100644
--- a/sysdeps/x86/cpu-features.c
+++ b/sysdeps/x86/cpu-features.c
@@ -221,6 +221,8 @@ update_active (struct cpu_features *cpu_features)
 	  CPU_FEATURE_SET_ACTIVE (cpu_features, AMX_INT8);
 	  /* Determine if AMX_FP16 is usable.  */
 	  CPU_FEATURE_SET_ACTIVE (cpu_features, AMX_FP16);
+	  /* Determine if AMX_COMPLEX is usable.  */
+	  CPU_FEATURE_SET_ACTIVE (cpu_features, AMX_COMPLEX);
 	}
 
       /* These features are usable only when OSXSAVE is enabled.  */
diff --git a/sysdeps/x86/include/cpu-features.h b/sysdeps/x86/include/cpu-features.h
index 673cf8ca92..f14c1078d5 100644
--- a/sysdeps/x86/include/cpu-features.h
+++ b/sysdeps/x86/include/cpu-features.h
@@ -317,6 +317,7 @@ enum
 /* EDX.  */
 #define bit_cpu_AVX_VNNI_INT8	(1u << 4)
 #define bit_cpu_AVX_NE_CONVERT	(1u << 5)
+#define bit_cpu_AMX_COMPLEX	(1u << 8)
 
 /* CPUID_INDEX_19.  */
 
@@ -558,6 +559,7 @@ enum
 #define index_cpu_LAM		CPUID_INDEX_7_ECX_1
 #define index_cpu_AVX_VNNI_INT8	CPUID_INDEX_7_ECX_1
 #define index_cpu_AVX_NE_CONVERT CPUID_INDEX_7_ECX_1
+#define index_cpu_AMX_COMPLEX	CPUID_INDEX_7_ECX_1
 
 /* CPUID_INDEX_19.  */
 
@@ -801,6 +803,7 @@ enum
 /* EDX.  */
 #define reg_AVX_VNNI_INT8	edx
 #define reg_AVX_NE_CONVERT	edx
+#define reg_AMX_COMPLEX		edx
 
 /* CPUID_INDEX_19.  */
 
diff --git a/sysdeps/x86/tst-get-cpu-features.c b/sysdeps/x86/tst-get-cpu-features.c
index bb1b67fd1c..87fe27340f 100644
--- a/sysdeps/x86/tst-get-cpu-features.c
+++ b/sysdeps/x86/tst-get-cpu-features.c
@@ -217,6 +217,7 @@ do_test (void)
   CHECK_CPU_FEATURE_PRESENT (MSRLIST);
   CHECK_CPU_FEATURE_PRESENT (AVX_VNNI_INT8);
   CHECK_CPU_FEATURE_PRESENT (AVX_NE_CONVERT);
+  CHECK_CPU_FEATURE_PRESENT (AMX_COMPLEX);
   CHECK_CPU_FEATURE_PRESENT (AESKLE);
   CHECK_CPU_FEATURE_PRESENT (WIDE_KL);
   CHECK_CPU_FEATURE_PRESENT (PTWRITE);
@@ -386,6 +387,7 @@ do_test (void)
   CHECK_CPU_FEATURE_ACTIVE (AVX_IFMA);
   CHECK_CPU_FEATURE_ACTIVE (AVX_VNNI_INT8);
   CHECK_CPU_FEATURE_ACTIVE (AVX_NE_CONVERT);
+  CHECK_CPU_FEATURE_ACTIVE (AMX_COMPLEX);
   CHECK_CPU_FEATURE_ACTIVE (AESKLE);
   CHECK_CPU_FEATURE_ACTIVE (WIDE_KL);
   CHECK_CPU_FEATURE_ACTIVE (PTWRITE);