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cond.md (cond_to_int peephole2): Don't eliminate the insns if the intermediate value will be used later.

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* config/m32c/cond.md (cond_to_int peephole2): Don't eliminate the
insns if the intermediate value will be used later.

From-SVN: r141788
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DJ Delorie 2008-11-12 11:35:03 -05:00 committed by DJ Delorie
parent 429ce9927e
commit d2cf2f07a9
2 changed files with 10 additions and 2 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2008-11-12 DJ Delorie <dj@redhat.com>
* config/m32c/cond.md (cond_to_int peephole2): Don't eliminate the
insns if the intermediate value will be used later.
2008-11-12 Andreas Schwab <schwab@suse.de>
* config/m68k/m68k.c (print_operand): Mask off extra extension

7
gcc/config/m32c/cond.md
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@ -300,7 +300,9 @@
[(set_attr "flags" "x")]
)
;; A cond_to_int followed by a compare against zero is essentially a no-op.
;; A cond_to_int followed by a compare against zero is essentially a
;; no-op. However, the result of the cond_to_int may be used by later
;; insns, so make sure it's dead before deleting its set.
(define_peephole2
[(set (match_operand:HI 0 "mra_qi_operand" "")
@ -313,6 +315,7 @@
(compare (match_operand:HI 1 "mra_qi_operand" "")
(const_int 0)))
]
"rtx_equal_p(operands[0], operands[1])"
"rtx_equal_p (operands[0], operands[1])
&& dead_or_set_p (peep2_next_insn (1), operands[0])"
[(const_int 1)]
"")