See http://gcc.gnu.org/PR13250
Fixes bad code generated when compiling SHA256 for SH processor

===================================================================
RCS file: /cvs/gcc/gcc/gcc/config/sh/sh.md,v
retrieving revision 1.171
retrieving revision 1.172
diff -u -r1.171 -r1.172
--- gcc/gcc/config/sh/sh.md	2004/05/10 23:25:13	1.171
+++ gcc/gcc/config/sh/sh.md	2004/05/28 05:47:36	1.172
@@ -2194,7 +2194,7 @@
 	parts[0] = gen_reg_rtx (SImode);
 	parts[1] = gen_reg_rtx (SImode);
 	emit_insn (gen_rotlsi3_16 (parts[2-choice], operands[1]));
-	parts[choice-1] = operands[1];
+	emit_move_insn (parts[choice-1], operands[1]);
 	emit_insn (gen_ashlsi3 (parts[0], parts[0], GEN_INT (8)));
 	emit_insn (gen_lshrsi3 (parts[1], parts[1], GEN_INT (8)));
 	emit_insn (gen_iorsi3 (operands[0], parts[0], parts[1]));