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arm.md (QHSI): New mode iterator.

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* arm.md (QHSI): New mode iterator.
	(movqi): If generating for thumb, then truncate any immediate to
	8 bits.
	* thumb2.md (thumb2_movsi_shortim and peephole2 generator): Replace
	with...
	(thumb2_mov<mode>_shortim and peephole2 generator): ... iterator based
	version.

From-SVN: r153739
This commit is contained in:
Richard Earnshaw 2009-10-30 09:16:36 +00:00 committed by Richard Earnshaw
parent 649fb657d5
commit 953a18fb42
3 changed files with 23 additions and 5 deletions
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10
gcc/ChangeLog
View File

@ -1,3 +1,13 @@
2009-10-30 Richard Earnshaw <rearnsha@arm.com>
* arm.md (QHSI): New mode iterator.
(movqi): If generating for thumb, then truncate any immediate to
8 bits.
* thumb2.md (thumb2_movsi_shortim and peephole2 generator): Replace
with...
(thumb2_mov<mode>_shortim and peephole2 generator): ... iterator based
version.
2009-10-29 Cary Coutant <ccoutant@google.com>
PR debug/41700

8
gcc/config/arm/arm.md
View File

@ -392,6 +392,9 @@
; registers.
(define_mode_iterator ANY64 [DI DF V8QI V4HI V2SI V2SF])
;; The integer modes up to word size
(define_mode_iterator QHSI [QI HI SI])
;;---------------------------------------------------------------------------
;; Predicates
@ -5848,6 +5851,11 @@
{
rtx reg = gen_reg_rtx (SImode);
/* For thumb we want an unsigned immediate, then we are more likely
to be able to use a movs insn. */
if (TARGET_THUMB)
operands[1] = GEN_INT (INTVAL (operands[1]) & 255);
emit_insn (gen_movsi (reg, operands[1]));
operands[1] = gen_lowpart (QImode, reg);
}

10
gcc/config/arm/thumb2.md
View File

@ -1156,8 +1156,8 @@
;; 16-bit load immediate
(define_peephole2
[(set (match_operand:SI 0 "low_register_operand" "")
(match_operand:SI 1 "const_int_operand" ""))]
[(set (match_operand:QHSI 0 "low_register_operand" "")
(match_operand:QHSI 1 "const_int_operand" ""))]
"TARGET_THUMB2
&& peep2_regno_dead_p(0, CC_REGNUM)
&& (unsigned HOST_WIDE_INT) INTVAL(operands[1]) < 256"
@ -1168,9 +1168,9 @@
""
)
(define_insn "*thumb2_movsi_shortim"
[(set (match_operand:SI 0 "low_register_operand" "=l")
(match_operand:SI 1 "const_int_operand" "I"))
(define_insn "*thumb2_mov<mode>_shortim"
[(set (match_operand:QHSI 0 "low_register_operand" "=l")
(match_operand:QHSI 1 "const_int_operand" "I"))
(clobber (reg:CC CC_REGNUM))]
"TARGET_THUMB2 && reload_completed"
"mov%!\t%0, %1"