[ia32] Better code generation for materialization of float/double constants.

src/ia32/assembler-ia32.cc

 // Copyright (c) 1994-2006 Sun Microsystems Inc.
 // All Rights Reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions
 // are met:
 //
 // - Redistributions of source code must retain the above copyright notice,
 // this list of conditions and the following disclaimer.
 //
@@ skipping 2363 matching lines @@
   DCHECK(IsEnabled(SSE4_1));
   EnsureSpace ensure_space(this);
   EMIT(0x66);
   EMIT(0x0F);
   EMIT(0x38);
   EMIT(0x17);
   emit_sse_operand(dst, src);
 }
 
 
+void Assembler::pslld(XMMRegister reg, int8_t shift) {
+  EnsureSpace ensure_space(this);
+  EMIT(0x66);
+  EMIT(0x0F);
+  EMIT(0x72);
+  emit_sse_operand(esi, reg);  // esi == 6
+  EMIT(shift);
+}
+
+
+void Assembler::psrld(XMMRegister reg, int8_t shift) {
+  EnsureSpace ensure_space(this);
+  EMIT(0x66);
+  EMIT(0x0F);
+  EMIT(0x72);
+  emit_sse_operand(edx, reg);  // edx == 2
+  EMIT(shift);
+}
+
+
 void Assembler::psllq(XMMRegister reg, int8_t shift) {
   EnsureSpace ensure_space(this);
   EMIT(0x66);
   EMIT(0x0F);
   EMIT(0x73);
   emit_sse_operand(esi, reg);  // esi == 6
   EMIT(shift);
 }
 
 
@@ skipping 273 matching lines @@
     fprintf(coverage_log, "%s\n", file_line);
     fflush(coverage_log);
   }
 }
 
 #endif
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32