diff --git a/kernel/x86_64/caxpy_microk_bulldozer-2.c b/kernel/x86_64/caxpy_microk_bulldozer-2.c
index ca2209340..a32558dc9 100644
--- a/kernel/x86_64/caxpy_microk_bulldozer-2.c
+++ b/kernel/x86_64/caxpy_microk_bulldozer-2.c
@@ -122,7 +122,7 @@ static void caxpy_kernel_8( BLASLONG n, FLOAT *x, FLOAT *y, FLOAT *alpha)
           "r" (alpha),  // 4
           "r" (mvec)    // 5
 	: "cc", 
-	  "%xmm0", "%xmm1",
+	  "%xmm0", "%xmm1", "%xmm2", "%xmm3",
 	  "%xmm4", "%xmm5", "%xmm6", "%xmm7", 
 	  "%xmm8", "%xmm9", "%xmm10", "%xmm11", 
 	  "%xmm12", "%xmm13", "%xmm14", "%xmm15",
@@ -189,9 +189,10 @@ static void caxpy_kernel_8( BLASLONG n, FLOAT *x, FLOAT *y, FLOAT *alpha)
           "r" (alpha),  // 4
           "r" (mvec)    // 5
 	: "cc", 
-	  "%xmm0", "%xmm1",
+	  "%xmm0", "%xmm1", "%xmm2", "%xmm3",
 	  "%xmm4", "%xmm5", "%xmm6", "%xmm7", 
 	  "%xmm8", "%xmm9", "%xmm10", "%xmm11", 
+	  "%xmm12", "%xmm13", "%xmm14", "%xmm15",
 	  "memory"
 	);
 
diff --git a/kernel/x86_64/caxpy_microk_haswell-2.c b/kernel/x86_64/caxpy_microk_haswell-2.c
index b605ea34c..129ce7a49 100644
--- a/kernel/x86_64/caxpy_microk_haswell-2.c
+++ b/kernel/x86_64/caxpy_microk_haswell-2.c
@@ -120,7 +120,7 @@ static void caxpy_kernel_8( BLASLONG n, FLOAT *x, FLOAT *y, FLOAT *alpha)
           "r" (alpha),  // 4
           "r" (mvec)    // 5
 	: "cc", 
-	  "%xmm0", "%xmm1",
+	  "%xmm0", "%xmm1", "%xmm2", "%xmm3",
 	  "%xmm4", "%xmm5", "%xmm6", "%xmm7", 
 	  "%xmm8", "%xmm9", "%xmm10", "%xmm11", 
 	  "%xmm12", "%xmm13", "%xmm14", "%xmm15", 
diff --git a/kernel/x86_64/caxpy_microk_sandy-2.c b/kernel/x86_64/caxpy_microk_sandy-2.c
index 72d37afed..564dfbd0f 100644
--- a/kernel/x86_64/caxpy_microk_sandy-2.c
+++ b/kernel/x86_64/caxpy_microk_sandy-2.c
@@ -104,7 +104,7 @@ static void caxpy_kernel_8( BLASLONG n, FLOAT *x, FLOAT *y, FLOAT *alpha)
           "r" (alpha),  // 4
           "r" (mvec)    // 5
 	: "cc", 
-	  "%xmm0", "%xmm1",
+	  "%xmm0", "%xmm1", "%xmm2", "%xmm3",
 	  "%xmm4", "%xmm5", "%xmm6", "%xmm7", 
 	  "%xmm8", "%xmm9", "%xmm10", "%xmm11", 
 	  "%xmm12", "%xmm13", "%xmm14", "%xmm15", 
diff --git a/kernel/x86_64/caxpy_microk_steamroller-2.c b/kernel/x86_64/caxpy_microk_steamroller-2.c
index 7ca7af070..cc5c5de76 100644
--- a/kernel/x86_64/caxpy_microk_steamroller-2.c
+++ b/kernel/x86_64/caxpy_microk_steamroller-2.c
@@ -122,7 +122,7 @@ static void caxpy_kernel_8( BLASLONG n, FLOAT *x, FLOAT *y, FLOAT *alpha)
           "r" (alpha),  // 4
           "r" (mvec)    // 5
 	: "cc", 
-	  "%xmm0", "%xmm1",
+	  "%xmm0", "%xmm1", "%xmm2", "%xmm3",
 	  "%xmm4", "%xmm5", "%xmm6", "%xmm7", 
 	  "%xmm8", "%xmm9", "%xmm10", "%xmm11", 
 	  "%xmm12", "%xmm13", "%xmm14", "%xmm15",
@@ -189,9 +189,10 @@ static void caxpy_kernel_8( BLASLONG n, FLOAT *x, FLOAT *y, FLOAT *alpha)
           "r" (alpha),  // 4
           "r" (mvec)    // 5
 	: "cc", 
-	  "%xmm0", "%xmm1",
+	  "%xmm0", "%xmm1", "%xmm2", "%xmm3",
 	  "%xmm4", "%xmm5", "%xmm6", "%xmm7", 
 	  "%xmm8", "%xmm9", "%xmm10", "%xmm11", 
+	  "%xmm12", "%xmm13", "%xmm14", "%xmm15",
 	  "memory"
 	);
 
diff --git a/kernel/x86_64/daxpy_microk_haswell-2.c b/kernel/x86_64/daxpy_microk_haswell-2.c
index f3682e6d7..ecc0ecbd3 100644
--- a/kernel/x86_64/daxpy_microk_haswell-2.c
+++ b/kernel/x86_64/daxpy_microk_haswell-2.c
@@ -67,8 +67,9 @@ static void daxpy_kernel_8( BLASLONG n, FLOAT *x, FLOAT *y, FLOAT *alpha)
           "r" (y),      // 3
           "r" (alpha)   // 4
 	: "cc", 
-	  "%xmm0", 
-	  "%xmm8", "%xmm9", "%xmm10", "%xmm11", 
+	  "%xmm0", "%xmm1", "%xmm2", "%xmm3",
+	  "%xmm4", "%xmm5", "%xmm6", "%xmm7",
+	  "%xmm8", "%xmm9", "%xmm10", "%xmm11",
 	  "%xmm12", "%xmm13", "%xmm14", "%xmm15",
 	  "memory"
 	);
diff --git a/kernel/x86_64/ddot_microk_haswell-2.c b/kernel/x86_64/ddot_microk_haswell-2.c
index dbb5487f7..faac72870 100644
--- a/kernel/x86_64/ddot_microk_haswell-2.c
+++ b/kernel/x86_64/ddot_microk_haswell-2.c
@@ -84,8 +84,9 @@ static void ddot_kernel_8( BLASLONG n, FLOAT *x, FLOAT *y, FLOAT *dot)
           "r" (y),      // 3
           "r" (dot)     // 4
 	: "cc", 
-	  "%xmm4", "%xmm5", 
-	  "%xmm6", "%xmm7", 
+	  "%xmm0", "%xmm1", "%xmm2", "%xmm3",
+	  "%xmm4", "%xmm5", "%xmm6", "%xmm7",
+	  "%xmm8", "%xmm9", "%xmm10", "%xmm11",
 	  "%xmm12", "%xmm13", "%xmm14", "%xmm15",
 	  "memory"
 	);
diff --git a/kernel/x86_64/ddot_microk_piledriver-2.c b/kernel/x86_64/ddot_microk_piledriver-2.c
index cc4bcd90a..0320a2e36 100644
--- a/kernel/x86_64/ddot_microk_piledriver-2.c
+++ b/kernel/x86_64/ddot_microk_piledriver-2.c
@@ -91,6 +91,7 @@ static void ddot_kernel_8( BLASLONG n, FLOAT *x, FLOAT *y, FLOAT *dot)
 	: "cc", 
 	  "%xmm0", "%xmm1", "%xmm2", "%xmm3", 
 	  "%xmm4", "%xmm5", "%xmm6", "%xmm7", 
+	  "%xmm8", "%xmm9", "%xmm10", "%xmm11",
 	  "%xmm12", "%xmm13", "%xmm14", "%xmm15",
 	  "memory"
 	);
@@ -155,6 +156,7 @@ static void ddot_kernel_8( BLASLONG n, FLOAT *x, FLOAT *y, FLOAT *dot)
 	: "cc", 
 	  "%xmm0", "%xmm1", "%xmm2", "%xmm3", 
 	  "%xmm4", "%xmm5", "%xmm6", "%xmm7", 
+	  "%xmm8", "%xmm9", "%xmm10", "%xmm11",
 	  "%xmm12", "%xmm13", "%xmm14", "%xmm15",
 	  "memory"
 	);
diff --git a/kernel/x86_64/ddot_microk_sandy-2.c b/kernel/x86_64/ddot_microk_sandy-2.c
index 84493ec27..35ba86a7d 100644
--- a/kernel/x86_64/ddot_microk_sandy-2.c
+++ b/kernel/x86_64/ddot_microk_sandy-2.c
@@ -89,8 +89,9 @@ static void ddot_kernel_8( BLASLONG n, FLOAT *x, FLOAT *y, FLOAT *dot)
           "r" (y),      // 3
           "r" (dot)     // 4
 	: "cc", 
-	  "%xmm4", "%xmm5", 
-	  "%xmm6", "%xmm7", 
+	  "%xmm0", "%xmm1", "%xmm2", "%xmm3",
+	  "%xmm4", "%xmm5", "%xmm6", "%xmm7",
+	  "%xmm8", "%xmm9", "%xmm10", "%xmm11",
 	  "%xmm12", "%xmm13", "%xmm14", "%xmm15",
 	  "memory"
 	);
diff --git a/kernel/x86_64/ddot_microk_steamroller-2.c b/kernel/x86_64/ddot_microk_steamroller-2.c
index 27d5244ce..94c012f0d 100644
--- a/kernel/x86_64/ddot_microk_steamroller-2.c
+++ b/kernel/x86_64/ddot_microk_steamroller-2.c
@@ -88,6 +88,7 @@ static void ddot_kernel_8( BLASLONG n, FLOAT *x, FLOAT *y, FLOAT *dot)
 	: "cc", 
 	  "%xmm0", "%xmm1", "%xmm2", "%xmm3", 
 	  "%xmm4", "%xmm5", "%xmm6", "%xmm7", 
+	  "%xmm8", "%xmm9", "%xmm10", "%xmm11",
 	  "%xmm12", "%xmm13", "%xmm14", "%xmm15",
 	  "memory"
 	);
diff --git a/kernel/x86_64/dgemv_n_microk_haswell-4.c b/kernel/x86_64/dgemv_n_microk_haswell-4.c
index da0fa2fff..c20c0a030 100644
--- a/kernel/x86_64/dgemv_n_microk_haswell-4.c
+++ b/kernel/x86_64/dgemv_n_microk_haswell-4.c
@@ -105,9 +105,8 @@ static void dgemv_kernel_4x4( BLASLONG n, FLOAT **ap, FLOAT *x, FLOAT *y, FLOAT
           "r" (alpha)   // 8
 	: "cc", 
 	  "%xmm0", "%xmm1", "%xmm2", "%xmm3",
-	  "%xmm4", "%xmm5", 
-	  "%xmm6", "%xmm7", 
-	  "%xmm8", "%xmm9", 
+	  "%xmm4", "%xmm5", "%xmm6", "%xmm7",
+	  "%xmm8", "%xmm9", "%xmm10", "%xmm11",
 	  "%xmm12", "%xmm13", "%xmm14", "%xmm15",
 	  "memory"
 	);
@@ -182,11 +181,10 @@ static void dgemv_kernel_4x2( BLASLONG n, FLOAT **ap, FLOAT *x, FLOAT *y, FLOAT
           "r" (ap[1]),  // 5
           "r" (alpha)   // 6
 	: "cc", 
-	  "%xmm0", "%xmm1", 
-	  "%xmm4", "%xmm5", 
-	  "%xmm6", 
-	  "%xmm8", 
-	  "%xmm12", "%xmm13",
+	  "%xmm0", "%xmm1", "%xmm2", "%xmm3",
+	  "%xmm4", "%xmm5", "%xmm6", "%xmm7",
+	  "%xmm8", "%xmm9", "%xmm10", "%xmm11",
+	  "%xmm12", "%xmm13", "%xmm14", "%xmm15",
 	  "memory"
 	);
 }
diff --git a/kernel/x86_64/dgemv_n_microk_piledriver-4.c b/kernel/x86_64/dgemv_n_microk_piledriver-4.c
index 466931b82..57fa426ba 100644
--- a/kernel/x86_64/dgemv_n_microk_piledriver-4.c
+++ b/kernel/x86_64/dgemv_n_microk_piledriver-4.c
@@ -140,7 +140,7 @@ static void dgemv_kernel_4x8( BLASLONG n, FLOAT **ap, FLOAT *x, FLOAT *y, BLASLO
 	  "%xmm2", "%xmm3", 
 	  "%xmm4", "%xmm5", 
 	  "%xmm6", "%xmm7", 
-	  "%xmm8", "%xmm9", 
+	  "%xmm8", "%xmm9", "%xmm10", "%xmm11",
 	  "%xmm12", "%xmm13", "%xmm14", "%xmm15",
 	  "memory"
 	);
@@ -235,9 +235,11 @@ static void dgemv_kernel_4x4( BLASLONG n, FLOAT **ap, FLOAT *x, FLOAT *y, FLOAT
           "r" (ap[3]),  // 7
           "r" (alpha)   // 8
 	: "cc", 
+	  "%xmm0", "%xmm1",
+	  "%xmm2", "%xmm3",
 	  "%xmm4", "%xmm5", 
 	  "%xmm6", "%xmm7", 
-	  "%xmm8", "%xmm9", 
+	  "%xmm8", "%xmm9", "%xmm10", "%xmm11",
 	  "%xmm12", "%xmm13", "%xmm14", "%xmm15",
 	  "memory"
 	);
diff --git a/kernel/x86_64/dgemv_t_microk_haswell-4.c b/kernel/x86_64/dgemv_t_microk_haswell-4.c
index 958fd3e0a..b398307d3 100644
--- a/kernel/x86_64/dgemv_t_microk_haswell-4.c
+++ b/kernel/x86_64/dgemv_t_microk_haswell-4.c
@@ -117,7 +117,9 @@ static void dgemv_kernel_4x4( BLASLONG n, FLOAT **ap, FLOAT *x, FLOAT *y)
           "r" (ap[2]),  // 6
           "r" (ap[3])   // 7
 	: "cc", 
+	  "%xmm0", "%xmm1", "%xmm2", "%xmm3",
 	  "%xmm4", "%xmm5", "%xmm6", "%xmm7",
+	  "%xmm8", "%xmm9", "%xmm10", "%xmm11",
 	  "%xmm12", "%xmm13", "%xmm14", "%xmm15",
 	  "memory"
 	);
diff --git a/kernel/x86_64/saxpy_microk_haswell-2.c b/kernel/x86_64/saxpy_microk_haswell-2.c
index 7099ba4c6..8cc697f05 100644
--- a/kernel/x86_64/saxpy_microk_haswell-2.c
+++ b/kernel/x86_64/saxpy_microk_haswell-2.c
@@ -67,7 +67,8 @@ static void saxpy_kernel_16( BLASLONG n, FLOAT *x, FLOAT *y, FLOAT *alpha)
           "r" (y),      // 3
           "r" (alpha)   // 4
 	: "cc", 
-	  "%xmm0", 
+	  "%xmm0", "%xmm1", "%xmm2", "%xmm3",
+	  "%xmm4", "%xmm5", "%xmm6", "%xmm7",
 	  "%xmm8", "%xmm9", "%xmm10", "%xmm11", 
 	  "%xmm12", "%xmm13", "%xmm14", "%xmm15",
 	  "memory"
diff --git a/kernel/x86_64/saxpy_microk_piledriver-2.c b/kernel/x86_64/saxpy_microk_piledriver-2.c
index 5feea7f24..ebbcc0045 100644
--- a/kernel/x86_64/saxpy_microk_piledriver-2.c
+++ b/kernel/x86_64/saxpy_microk_piledriver-2.c
@@ -86,7 +86,8 @@ static void saxpy_kernel_16( BLASLONG n, FLOAT *x, FLOAT *y, FLOAT *alpha)
           "r" (y),      // 3
           "r" (alpha)   // 4
 	: "cc", 
-	  "%xmm0", 
+	  "%xmm0", "%xmm1", "%xmm2", "%xmm3",
+	  "%xmm4", "%xmm5", "%xmm6", "%xmm7",
 	  "%xmm8", "%xmm9", "%xmm10", "%xmm11", 
 	  "%xmm12", "%xmm13", "%xmm14", "%xmm15",
 	  "memory"
@@ -147,7 +148,8 @@ static void saxpy_kernel_16( BLASLONG n, FLOAT *x, FLOAT *y, FLOAT *alpha)
           "r" (y),      // 3
           "r" (alpha)   // 4
 	: "cc", 
-	  "%xmm0", 
+	  "%xmm0", "%xmm1", "%xmm2", "%xmm3",
+	  "%xmm4", "%xmm5", "%xmm6", "%xmm7",
 	  "%xmm8", "%xmm9", "%xmm10", "%xmm11", 
 	  "%xmm12", "%xmm13", "%xmm14", "%xmm15",
 	  "memory"
diff --git a/kernel/x86_64/sdot_microk_haswell-2.c b/kernel/x86_64/sdot_microk_haswell-2.c
index 91dc928d3..322f4b28c 100644
--- a/kernel/x86_64/sdot_microk_haswell-2.c
+++ b/kernel/x86_64/sdot_microk_haswell-2.c
@@ -87,8 +87,9 @@ static void sdot_kernel_16( BLASLONG n, FLOAT *x, FLOAT *y, FLOAT *dot)
           "r" (y),      // 3
           "r" (dot)     // 4
 	: "cc", 
-	  "%xmm4", "%xmm5", 
-	  "%xmm6", "%xmm7", 
+	  "%xmm0", "%xmm1", "%xmm2", "%xmm3",
+	  "%xmm4", "%xmm5", "%xmm6", "%xmm7",
+	  "%xmm8", "%xmm9", "%xmm10", "%xmm11",
 	  "%xmm12", "%xmm13", "%xmm14", "%xmm15",
 	  "memory"
 	);
diff --git a/kernel/x86_64/sdot_microk_sandy-2.c b/kernel/x86_64/sdot_microk_sandy-2.c
index ae25d5a50..ce09b06cf 100644
--- a/kernel/x86_64/sdot_microk_sandy-2.c
+++ b/kernel/x86_64/sdot_microk_sandy-2.c
@@ -90,8 +90,9 @@ static void sdot_kernel_16( BLASLONG n, FLOAT *x, FLOAT *y, FLOAT *dot)
           "r" (y),      // 3
           "r" (dot)     // 4
 	: "cc", 
-	  "%xmm4", "%xmm5", 
-	  "%xmm6", "%xmm7", 
+	  "%xmm0", "%xmm1", "%xmm2", "%xmm3",
+	  "%xmm4", "%xmm5", "%xmm6", "%xmm7",
+	  "%xmm8", "%xmm9", "%xmm10", "%xmm11",
 	  "%xmm12", "%xmm13", "%xmm14", "%xmm15",
 	  "memory"
 	);
diff --git a/kernel/x86_64/sgemv_n_microk_haswell-4.c b/kernel/x86_64/sgemv_n_microk_haswell-4.c
index 93e1e26e8..556dcfde5 100644
--- a/kernel/x86_64/sgemv_n_microk_haswell-4.c
+++ b/kernel/x86_64/sgemv_n_microk_haswell-4.c
@@ -164,11 +164,9 @@ static void sgemv_kernel_4x8( BLASLONG n, FLOAT **ap, FLOAT *x, FLOAT *y, BLASLO
           "r" (ap[3]),  // 8
           "r" (alpha)   // 9
 	: "cc", 
-	  "%xmm0", "%xmm1", 
-	  "%xmm2", "%xmm3", 
-	  "%xmm4", "%xmm5", 
-	  "%xmm6", "%xmm7", 
-	  "%xmm8", "%xmm9", 
+	  "%xmm0", "%xmm1", "%xmm2", "%xmm3",
+	  "%xmm4", "%xmm5", "%xmm6", "%xmm7",
+	  "%xmm8", "%xmm9", "%xmm10", "%xmm11",
 	  "%xmm12", "%xmm13", "%xmm14", "%xmm15",
 	  "memory"
 	);
@@ -286,9 +284,9 @@ static void sgemv_kernel_4x4( BLASLONG n, FLOAT **ap, FLOAT *x, FLOAT *y, FLOAT
           "r" (ap[3]),  // 7
           "r" (alpha)   // 8
 	: "cc", 
-	  "%xmm4", "%xmm5", 
-	  "%xmm6", "%xmm7", 
-	  "%xmm8", "%xmm9", 
+	  "%xmm0", "%xmm1", "%xmm2", "%xmm3",
+	  "%xmm4", "%xmm5", "%xmm6", "%xmm7",
+	  "%xmm8", "%xmm9", "%xmm10", "%xmm11",
 	  "%xmm12", "%xmm13", "%xmm14", "%xmm15",
 	  "memory"
 	);
diff --git a/kernel/x86_64/sgemv_t_microk_haswell-4.c b/kernel/x86_64/sgemv_t_microk_haswell-4.c
index 8c370b4c0..fcabc0def 100644
--- a/kernel/x86_64/sgemv_t_microk_haswell-4.c
+++ b/kernel/x86_64/sgemv_t_microk_haswell-4.c
@@ -138,7 +138,9 @@ static void sgemv_kernel_4x4( BLASLONG n, FLOAT **ap, FLOAT *x, FLOAT *y)
           "r" (ap[2]),  // 6
           "r" (ap[3])   // 7
 	: "cc", 
+	  "%xmm0", "%xmm1", "%xmm2", "%xmm3",
 	  "%xmm4", "%xmm5", "%xmm6", "%xmm7",
+	  "%xmm8", "%xmm9", "%xmm10", "%xmm11",
 	  "%xmm12", "%xmm13", "%xmm14", "%xmm15",
 	  "memory"
 	);
diff --git a/kernel/x86_64/zaxpy_microk_bulldozer-2.c b/kernel/x86_64/zaxpy_microk_bulldozer-2.c
index 15d367971..ccb26134f 100644
--- a/kernel/x86_64/zaxpy_microk_bulldozer-2.c
+++ b/kernel/x86_64/zaxpy_microk_bulldozer-2.c
@@ -122,7 +122,7 @@ static void zaxpy_kernel_4( BLASLONG n, FLOAT *x, FLOAT *y, FLOAT *alpha)
           "r" (alpha),  // 4
           "r" (mvec)    // 5
 	: "cc", 
-	  "%xmm0", "%xmm1",
+	  "%xmm0", "%xmm1", "%xmm2", "%xmm3",
 	  "%xmm4", "%xmm5", "%xmm6", "%xmm7", 
 	  "%xmm8", "%xmm9", "%xmm10", "%xmm11", 
 	  "%xmm12", "%xmm13", "%xmm14", "%xmm15",
@@ -189,9 +189,10 @@ static void zaxpy_kernel_4( BLASLONG n, FLOAT *x, FLOAT *y, FLOAT *alpha)
           "r" (alpha),  // 4
           "r" (mvec)    // 5
 	: "cc", 
-	  "%xmm0", "%xmm1",
+	  "%xmm0", "%xmm1", "%xmm2", "%xmm3",
 	  "%xmm4", "%xmm5", "%xmm6", "%xmm7", 
 	  "%xmm8", "%xmm9", "%xmm10", "%xmm11", 
+	  "%xmm12", "%xmm13", "%xmm14", "%xmm15",
 	  "memory"
 	);
 
diff --git a/kernel/x86_64/zaxpy_microk_haswell-2.c b/kernel/x86_64/zaxpy_microk_haswell-2.c
index 89d23daf3..8f299ea2d 100644
--- a/kernel/x86_64/zaxpy_microk_haswell-2.c
+++ b/kernel/x86_64/zaxpy_microk_haswell-2.c
@@ -120,7 +120,7 @@ static void zaxpy_kernel_4( BLASLONG n, FLOAT *x, FLOAT *y, FLOAT *alpha)
           "r" (alpha),  // 4
           "r" (mvec)    // 5
 	: "cc", 
-	  "%xmm0", "%xmm1",
+	  "%xmm0", "%xmm1", "%xmm2", "%xmm3",
 	  "%xmm4", "%xmm5", "%xmm6", "%xmm7", 
 	  "%xmm8", "%xmm9", "%xmm10", "%xmm11", 
 	  "%xmm12", "%xmm13", "%xmm14", "%xmm15", 
diff --git a/kernel/x86_64/zaxpy_microk_sandy-2.c b/kernel/x86_64/zaxpy_microk_sandy-2.c
index 17b8b24f7..5246c72e8 100644
--- a/kernel/x86_64/zaxpy_microk_sandy-2.c
+++ b/kernel/x86_64/zaxpy_microk_sandy-2.c
@@ -108,9 +108,10 @@ static void zaxpy_kernel_4( BLASLONG n, FLOAT *x, FLOAT *y, FLOAT *alpha)
           "r" (alpha),  // 4
           "r" (mvec)    // 5
 	: "cc", 
-	  "%xmm0", "%xmm1",
+	  "%xmm0", "%xmm1", "%xmm2", "%xmm3",
 	  "%xmm4", "%xmm5", "%xmm6", "%xmm7", 
 	  "%xmm8", "%xmm9", "%xmm10", "%xmm11", 
+	  "%xmm12", "%xmm13", "%xmm14", "%xmm15",
 	  "memory"
 	);
 	return;
@@ -185,9 +186,10 @@ static void zaxpy_kernel_4( BLASLONG n, FLOAT *x, FLOAT *y, FLOAT *alpha)
           "r" (alpha),  // 4
           "r" (mvec)    // 5
 	: "cc", 
-	  "%xmm0", "%xmm1",
+	  "%xmm0", "%xmm1", "%xmm2", "%xmm3",
 	  "%xmm4", "%xmm5", "%xmm6", "%xmm7", 
 	  "%xmm8", "%xmm9", "%xmm10", "%xmm11", 
+	  "%xmm12", "%xmm13", "%xmm14", "%xmm15",
 	  "memory"
 	);
 
diff --git a/kernel/x86_64/zaxpy_microk_steamroller-2.c b/kernel/x86_64/zaxpy_microk_steamroller-2.c
index 907b1ae00..88e3a680b 100644
--- a/kernel/x86_64/zaxpy_microk_steamroller-2.c
+++ b/kernel/x86_64/zaxpy_microk_steamroller-2.c
@@ -122,7 +122,7 @@ static void zaxpy_kernel_4( BLASLONG n, FLOAT *x, FLOAT *y, FLOAT *alpha)
           "r" (alpha),  // 4
           "r" (mvec)    // 5
 	: "cc", 
-	  "%xmm0", "%xmm1",
+	  "%xmm0", "%xmm1", "%xmm2", "%xmm3",
 	  "%xmm4", "%xmm5", "%xmm6", "%xmm7", 
 	  "%xmm8", "%xmm9", "%xmm10", "%xmm11", 
 	  "%xmm12", "%xmm13", "%xmm14", "%xmm15",
@@ -189,9 +189,10 @@ static void zaxpy_kernel_4( BLASLONG n, FLOAT *x, FLOAT *y, FLOAT *alpha)
           "r" (alpha),  // 4
           "r" (mvec)    // 5
 	: "cc", 
-	  "%xmm0", "%xmm1",
+	  "%xmm0", "%xmm1", "%xmm2", "%xmm3",
 	  "%xmm4", "%xmm5", "%xmm6", "%xmm7", 
 	  "%xmm8", "%xmm9", "%xmm10", "%xmm11", 
+	  "%xmm12", "%xmm13", "%xmm14", "%xmm15",
 	  "memory"
 	);