Jan Hubicka <hubicka@freesoft.cz>

Jan Hubicka <hubicka@freesoft.cz>
        * i386.md (extendhisi2): Output mov instead of cw instruction for K6
        to improve decoding bandwidth.
        * i386.md (extendhiqi2): Likewise.

From-SVN: r26410

gcc/ChangeLog

+Tue Apr 13 14:29:58 1999  Jan Hubicka <hubicka@freesoft.cz>
+
+	* i386.md (extendhisi2): Output mov instead of cw instruction for K6
+	to improve decoding bandwidth.
+	* i386.md (extendhiqi2): Likewise.
+
 Tue Apr 13 14:26:31 1999  Jan Hubicka <hubicka@freesoft.cz>
 
 	* i386.md (movsf_push): Handle memory to memory case too, new splitter.

gcc/config/i386/i386.md

@@ -2091,7 +2091,8 @@
   "*
 {
   if (REGNO (operands[0]) == 0
-      && REG_P (operands[1]) && REGNO (operands[1]) == 0)
+      && REG_P (operands[1]) && REGNO (operands[1]) == 0
+      && (optimize_size || ix86_cpu != PROCESSOR_K6))
 #ifdef INTEL_SYNTAX
     return \"cwde\";
 #else
@@ -2112,7 +2113,8 @@
   "*
 {
   if (REGNO (operands[0]) == 0
-      && REG_P (operands[1]) && REGNO (operands[1]) == 0)
+      && REG_P (operands[1]) && REGNO (operands[1]) == 0
+      && (optimize_size || ix86_cpu != PROCESSOR_K6))
     return \"cbtw\";
 
 #ifdef INTEL_SYNTAX