Update copyright years.

[thirdparty/gcc.git] / gcc / config / i386 / cpuid.h

diff --git a/gcc/config/i386/cpuid.h b/gcc/config/i386/cpuid.h
index 8ddd425c8b7ea01401fbeb350fd6f05ee6b6cb91..34a7956d36aa4d880975317b041629a8398df0ef 100644 (file)
--- a/gcc/config/i386/cpuid.h
+++ b/gcc/config/i386/cpuid.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2007-2019 Free Software Foundation, Inc.
+ * Copyright (C) 2007-2020 Free Software Foundation, Inc.
  *
  * This file is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by the
@@ -113,11 +113,13 @@
 #define bit_RDPID      (1 << 22)
 #define bit_MOVDIRI    (1 << 27)
 #define bit_MOVDIR64B  (1 << 28)
+#define bit_ENQCMD     (1 << 29)
 #define bit_CLDEMOTE   (1 << 25)
 
 /* %edx */
 #define bit_AVX5124VNNIW (1 << 2)
 #define bit_AVX5124FMAPS (1 << 3)
+#define bit_AVX512VP2INTERSECT (1 << 8)
 #define bit_IBT        (1 << 20)
 #define bit_PCONFIG    (1 << 18)
 /* XFEATURE_ENABLED_MASK register bits (%eax == 13, %ecx == 0) */
@@ -187,10 +189,27 @@
 #define signature_VORTEX_ecx   0x436f5320
 #define signature_VORTEX_edx   0x36387865
 
+#ifndef __x86_64__
+/* At least one cpu (Winchip 2) does not set %ebx and %ecx
+   for cpuid leaf 1. Forcibly zero the two registers before
+   calling cpuid as a precaution.  */
+#define __cpuid(level, a, b, c, d)                     \
+  do {                                                 \
+    if (__builtin_constant_p (level) && (level) != 1)  \
+      __asm__ ("cpuid\n\t"                             \
+             : "=a" (a), "=b" (b), "=c" (c), "=d" (d)  \
+             : "0" (level));                           \
+    else                                               \
+      __asm__ ("cpuid\n\t"                             \
+             : "=a" (a), "=b" (b), "=c" (c), "=d" (d)  \
+             : "0" (level), "1" (0), "2" (0));         \
+  } while (0)
+#else
 #define __cpuid(level, a, b, c, d)                     \
   __asm__ ("cpuid\n\t"                                 \
           : "=a" (a), "=b" (b), "=c" (c), "=d" (d)     \
           : "0" (level))
+#endif
 
 #define __cpuid_count(level, count, a, b, c, d)                \
   __asm__ ("cpuid\n\t"                                 \