remove incorrect optimization in jit_insn_store()

ChangeLog

@@ -1,3 +1,9 @@
+2007-05-26  Aleksey Demakov  <ademakov@gmail.com>
+
+	* jit/jit-insn.c (jit_insn_store): remove incorrect optimization
+	that eliminates intermediate value without knowledge of its later
+	use.
+
 2007-04-04  Aleksey Demakov  <ademakov@gmail.com>
 
 	* jit/jit-reg-alloc.c (commit_output_value): fix compilation for

jit/jit-insn.c

@@ -1442,15 +1442,6 @@ int jit_insn_store(jit_function_t func, jit_value_t dest, jit_value_t value)
 	{
 		return 0;
 	}
-	insn = _jit_block_get_last(func->builder->current_block);
-	if(value->is_temporary && insn && insn->dest == value &&
-	   insn->value1 == dest)
-	{
-		/* Special case: we can move the destination value back into
-		   the previous instruction, to avoid a redundant copy */
-		insn->dest = dest;
-		return 1;
-	}
 	insn = _jit_block_add_insn(func->builder->current_block);
 	if(!insn)
 	{