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thumb2.md (thumb2_tlobits_cbranch): Add constraint to tst instruction and a new alternative. 

* config/arm/thumb2.md (thumb2_tlobits_cbranch): Add constraint to
	tst instruction and a new alternative.
	* config/arm/constraints.md (Pu): New constraint.

From-SVN: r159806
This commit is contained in:
Wei Guozhi 2010-05-25 01:08:35 +00:00 committed by Wei Guozhi
parent cf3b8ee3ab
commit ee4e170616
3 changed files with 31 additions and 8 deletions
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6
gcc/ChangeLog
View File

@ -1,3 +1,9 @@
2010-05-25 Wei Guozhi <carrot@google.com>
* config/arm/thumb2.md (thumb2_tlobits_cbranch): Add constraint to
tst instruction and a new alternative.
* config/arm/constraints.md (Pu): New constraint.
2010-05-24 Sebastian Pop <sebastian.pop@amd.com>
* function.c (assign_stack_local_1): Initialize variable

7
gcc/config/arm/constraints.md
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@ -31,7 +31,7 @@
;; The following multi-letter normal constraints have been used:
;; in ARM/Thumb-2 state: Da, Db, Dc, Dn, Dl, DL, Dv, Dy
;; in Thumb-1 state: Pa, Pb
;; in Thumb-2 state: Ps, Pt
;; in Thumb-2 state: Ps, Pt, Pu
;; The following memory constraints have been used:
;; in ARM/Thumb-2 state: Q, Ut, Uv, Uy, Un, Um, Us
@ -158,6 +158,11 @@
(and (match_code "const_int")
(match_test "TARGET_THUMB2 && ival >= -7 && ival <= 7")))
(define_constraint "Pu"
"@internal In Thumb-2 state a constant in the range +1 to +8"
(and (match_code "const_int")
(match_test "TARGET_THUMB2 && ival >= 1 && ival <= 8")))
(define_constraint "G"
"In ARM/Thumb-2 state a valid FPA immediate constant."
(and (match_code "const_double")

26
gcc/config/arm/thumb2.md
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@ -1460,13 +1460,14 @@
[(set (pc)
(if_then_else
(match_operator 0 "equality_operator"
[(zero_extract:SI (match_operand:SI 1 "s_register_operand" "l,?h")
(match_operand:SI 2 "const_int_operand" "i,i")
[(zero_extract:SI (match_operand:SI 1 "s_register_operand" "l,h,h")
(match_operand:SI 2 "const_int_operand" "i,Pu,i")
(const_int 0))
(const_int 0)])
(label_ref (match_operand 3 "" ""))
(pc)))
(clobber (match_scratch:SI 4 "=l,X"))]
(clobber (match_scratch:SI 4 "=l,X,r"))
(clobber (reg:CC CC_REGNUM))]
"TARGET_THUMB2"
"*
{
@ -1487,11 +1488,22 @@
}
else
{
rtx op[2];
op[0] = operands[1];
op[1] = GEN_INT ((1 << INTVAL (operands[2])) - 1);
rtx op[3];
if (which_alternative == 1)
{
op[0] = operands[1];
op[1] = GEN_INT ((1 << INTVAL (operands[2])) - 1);
output_asm_insn (\"tst\\t%0, %1\", op);
}
else
{
op[0] = operands[4];
op[1] = operands[1];
op[2] = GEN_INT (32 - INTVAL (operands[2]));
output_asm_insn (\"lsls\\t%0, %1, %2\", op);
}
output_asm_insn (\"tst\\t%0, %1\", op);
switch (get_attr_length (insn))
{
case 6: return \"b%d0\\t%l3\";