(x86 asm): Zero the high parts of the ?MM registers if available.

[catacomb] / math / mpx.c

diff --git a/math/mpx.c b/math/mpx.c
index 3983e7c..4294845 100644 (file)
--- a/math/mpx.c
+++ b/math/mpx.c
@@ -923,19 +923,25 @@ static void simple_umul(mpw *dv, mpw *dvl, const mpw *av, const mpw *avl,
 
 #if CPUFAM_X86
   MAYBE_UMUL4(x86_sse2)
+  MAYBE_UMUL4(x86_avx)
 #endif
 
 #if CPUFAM_AMD64
   MAYBE_UMUL4(amd64_sse2)
+  MAYBE_UMUL4(amd64_avx)
 #endif
 
 static mpx_umul__functype *pick_umul(void)
 {
 #if CPUFAM_X86
+  DISPATCH_PICK_COND(mpx_umul, maybe_umul4_x86_avx,
+                    cpu_feature_p(CPUFEAT_X86_AVX));
   DISPATCH_PICK_COND(mpx_umul, maybe_umul4_x86_sse2,
                     cpu_feature_p(CPUFEAT_X86_SSE2));
 #endif
 #if CPUFAM_AMD64
+  DISPATCH_PICK_COND(mpx_umul, maybe_umul4_amd64_avx,
+                    cpu_feature_p(CPUFEAT_X86_AVX));
   DISPATCH_PICK_COND(mpx_umul, maybe_umul4_amd64_sse2,
                     cpu_feature_p(CPUFEAT_X86_SSE2));
 #endif