re PR target/16888 (ICE: in print_reg, at config/i386/i386.c:7254)

gcc/ChangeLog:
PR target/16888
* config/i386/i386.h (CONDITIONAL_REGISTER_USAGE): Clear reg names
for unavailable registers.
gcc/testsuite/ChangeLog:
PR target/16888
* gcc.target/i386/asm-1.c: New test.

From-SVN: r99167

gcc/ChangeLog

+2005-05-03  Alexandre Oliva  <aoliva@redhat.com>
+
+	PR target/16888
+	* config/i386/i386.h (CONDITIONAL_REGISTER_USAGE): Clear reg names
+	for unavailable registers.
+
 2005-05-03  Kazu Hirata  <kazu@cs.umass.edu>
 
 	* tree-cfg.c (tree_forwarder_block_p): Fix a typo.

gcc/config/i386/i386.h

@@ -780,14 +780,14 @@ do {									\
 	int i;								\
         for (i = 0; i < FIRST_PSEUDO_REGISTER; i++)			\
           if (TEST_HARD_REG_BIT (reg_class_contents[(int)MMX_REGS], i))	\
-	    fixed_regs[i] = call_used_regs[i] = 1;		 	\
+	    fixed_regs[i] = call_used_regs[i] = 1, reg_names[i] = "";	\
       }									\
     if (! TARGET_SSE)							\
       {									\
 	int i;								\
         for (i = 0; i < FIRST_PSEUDO_REGISTER; i++)			\
           if (TEST_HARD_REG_BIT (reg_class_contents[(int)SSE_REGS], i))	\
-	    fixed_regs[i] = call_used_regs[i] = 1;		 	\
+	    fixed_regs[i] = call_used_regs[i] = 1, reg_names[i] = "";	\
       }									\
     if (! TARGET_80387 && ! TARGET_FLOAT_RETURNS_IN_80387)		\
       {									\
@@ -796,7 +796,15 @@ do {									\
         COPY_HARD_REG_SET (x, reg_class_contents[(int)FLOAT_REGS]);	\
         for (i = 0; i < FIRST_PSEUDO_REGISTER; i++)			\
           if (TEST_HARD_REG_BIT (x, i)) 				\
-	    fixed_regs[i] = call_used_regs[i] = 1;			\
+	    fixed_regs[i] = call_used_regs[i] = 1, reg_names[i] = "";	\
+      }									\
+    if (! TARGET_64BIT)							\
+      {									\
+	int i;								\
+	for (i = FIRST_REX_INT_REG; i <= LAST_REX_INT_REG; i++)		\
+	  reg_names[i] = "";						\
+	for (i = FIRST_REX_SSE_REG; i <= LAST_REX_SSE_REG; i++)		\
+	  reg_names[i] = "";						\
       }									\
   } while (0)
 

gcc/testsuite/ChangeLog

+2005-05-03  Alexandre Oliva  <aoliva@redhat.com>
+
+	PR target/16888
+	* gcc.target/i386/asm-1.c: New test.
+
 2005-05-03  Jakub Jelinek  <jakub@redhat.com>
 
 	PR rtl-optimization/21330

gcc/testsuite/gcc.target/i386/asm-1.c

+/* { dg-do compile } */
+/* { dg-options "-m32" } */
+
+register unsigned int EAX asm ("r14"); /* { dg-error "register name" } */
+
+void foo ()
+{
+  EAX = 0;
+}