re PR target/62120 ([ICE] ADDITIONAL_REGISTER_NAMES for [YZ]MMs, regno>8 should…

re PR target/62120 ([ICE] ADDITIONAL_REGISTER_NAMES for [YZ]MMs, regno>8 should be disable in 32-bit)

Fix PR 62120.

gcc/
2014-09-30  Ilya Tocar  <ilya.tocar@intel.com>

       PR middle-end/62120
       * varasm.c (decode_reg_name_and_count): Check availability for
       registers from ADDITIONAL_REGISTER_NAMES.

testsuite/
2014-09-30  Ilya Tocar  <ilya.tocar@intel.com>

       PR middle-end/62120
       * gcc.target/i386/avx512f-additional-reg-names.c: Use register valid
       in 32-bit mode.
       * gcc.target/i386/pr62120.c: New.

From-SVN: r215729

gcc/ChangeLog

+2014-09-30  Ilya Tocar  <ilya.tocar@intel.com>
+
+	PR middle-end/62120
+	* varasm.c (decode_reg_name_and_count): Check availability for
+	registers from ADDITIONAL_REGISTER_NAMES.
+
 2014-09-30  David Malcolm  <dmalcolm@redhat.com>
 
 	PR plugins/63410

gcc/testsuite/ChangeLog

+2014-09-30  Ilya Tocar  <ilya.tocar@intel.com>
+
+	PR middle-end/62120
+	* gcc.target/i386/avx512f-additional-reg-names.c: Use register valid
+	in 32-bit mode.
+	* gcc.target/i386/pr62120.c: New. 
+
 2014-09-30  James Greenhalgh  <james.greenhalgh@arm.com>
 
 	* gcc.target/aarch64/simd/vqdmullh_laneq_s16.c: New.

gcc/testsuite/gcc.target/i386/avx512f-additional-reg-names.c

@@ -3,7 +3,7 @@
 
 void foo ()
 {
-  register int zmm_var asm ("zmm9") __attribute__((unused));
+  register int zmm_var asm ("zmm6") __attribute__((unused));
 
   __asm__ __volatile__("vxorpd %%zmm0, %%zmm0, %%zmm7\n" : : : "zmm7" );
 }

gcc/testsuite/gcc.target/i386/pr62120.c

+/* { dg-do compile } */
+/* { dg-options "-mno-sse" } */
+
+void foo ()
+{
+  register int zmm_var asm ("ymm9");/* { dg-error "invalid register name" } */
+  register int zmm_var2 asm ("23");/* { dg-error "invalid register name" } */
+}

gcc/varasm.c

@@ -888,7 +888,7 @@ decode_reg_name_and_count (const char *asmspec, int *pnregs)
       if (asmspec[0] != 0 && i < 0)
 	{
 	  i = atoi (asmspec);
-	  if (i < FIRST_PSEUDO_REGISTER && i >= 0)
+	  if (i < FIRST_PSEUDO_REGISTER && i >= 0 && reg_names[i][0])
 	    return i;
 	  else
 	    return -2;
@@ -925,7 +925,8 @@ decode_reg_name_and_count (const char *asmspec, int *pnregs)
 
 	for (i = 0; i < (int) ARRAY_SIZE (table); i++)
 	  if (table[i].name[0]
-	      && ! strcmp (asmspec, table[i].name))
+	      && ! strcmp (asmspec, table[i].name)
+	      && reg_names[table[i].number][0])
 	    return table[i].number;
       }
 #endif /* ADDITIONAL_REGISTER_NAMES */