+2006-02-13 Adam Nemet <anemet@caviumnetworks.com>
+
+ * simplify-rtx.c (simplify_unary_operation_1) <TRUNCATE>: Return
+ new expression in the requested machine mode.
+
2006-02-13 Roger Sayle <roger@eyesopen.com>
* optabs.c (expand_abs): Don't call do_jump_by_parts_greater_rtx
return simplify_gen_unary (GET_CODE (op), mode,
XEXP (XEXP (op, 0), 0), mode);
- /* (truncate:SI (subreg:DI (truncate:SI X) 0)) is
- (truncate:SI x). */
+ /* (truncate:A (subreg:B (truncate:C X) 0)) is
+ (truncate:A X). */
if (GET_CODE (op) == SUBREG
&& GET_CODE (SUBREG_REG (op)) == TRUNCATE
&& subreg_lowpart_p (op))
- return SUBREG_REG (op);
+ return simplify_gen_unary (TRUNCATE, mode, XEXP (SUBREG_REG (op), 0),
+ GET_MODE (XEXP (SUBREG_REG (op), 0)));
/* If we know that the value is already truncated, we can
replace the TRUNCATE with a SUBREG if TRULY_NOOP_TRUNCATION