From c595dea23c6e77dc5d44a7f4b86916b72e09f970 Mon Sep 17 00:00:00 2001
From: José Fonseca <jfonseca@vmware.com>
Date: Fri, 9 Oct 2009 13:22:42 +0100
Subject: util: Force ESI register for cpuid's ebx result.

Fixes a segfault and better code. Unfortunately using an arbitrary
register ("=r") causes the gcc to abort when the code is optimized saying
it can't satisfy the constraint. Setting seems to do the trick.
---
 src/gallium/auxiliary/util/u_cpu_detect.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/gallium/auxiliary/util/u_cpu_detect.c b/src/gallium/auxiliary/util/u_cpu_detect.c
index 70ce25cfcf4..ded361ce704 100644
--- a/src/gallium/auxiliary/util/u_cpu_detect.c
+++ b/src/gallium/auxiliary/util/u_cpu_detect.c
@@ -346,7 +346,7 @@ cpuid(uint32_t ax, uint32_t *p)
      "cpuid\n\t"
      "xchgl %%ebx, %1"
      : "=a" (p[0]),
-       "=m" (p[1]),
+       "=S" (p[1]),
        "=c" (p[2]),
        "=d" (p[3])
      : "0" (ax)
-- 
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