[cogl/cogl-1.14] cogl-fixed: In ARM asm don't allow GCC to reuse input regs for outputs

[Neil Roberts <nroberts src gnome org>]

commit 4061a7b7ad1729c18af8b8b2745c82c6872b8f1a
Author: Roy.Li <rongqing li windriver com>
Date:   Fri Jun 14 12:17:25 2013 +0100

    cogl-fixed: In ARM asm don't allow GCC to reuse input regs for outputs
    
    Add register constraints to prevent asm statement complaints like:
    
      {standard input}:382: rdhi, rdlo and rm must all be different
    
    Signed-off-by: Donn Seeley <donn seeley windriver com>
    Reviewed-by: Neil Roberts <neil linux intel com>
    
    (cherry picked from commit b32d135299a32d6a5594279fcdfa5a0b51c9c1ee)

 cogl/cogl-fixed.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/cogl/cogl-fixed.c b/cogl/cogl-fixed.c
index 7af659f..5dc74f8 100644
--- a/cogl/cogl-fixed.c
+++ b/cogl/cogl-fixed.c
@@ -819,7 +819,7 @@ cogl_fixed_mul (CoglFixed a,
   __asm__ ("smull %0, %1, %2, %3     \n"
            "mov   %0, %0,     lsr %4 \n"
            "add   %1, %0, %1, lsl %5 \n"
-           : "=r"(res_hi), "=r"(res_low) \
+           : "=&r"(res_hi), "=&r"(res_low) \
            : "r"(a), "r"(b), "i"(COGL_FIXED_Q), "i"(32 - COGL_FIXED_Q));
 
   return (CoglFixed) res_low;