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i386.md: Revert previous change.

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* config/i386/i386.md: Revert previous change.  Do not apply
        the peephole if the components do not die after the sequence.

From-SVN: r42576
This commit is contained in:
Richard Henderson 2001-05-25 11:17:40 -07:00
parent 0e03329a6f
commit 244ec848eb
2 changed files with 10 additions and 9 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,8 @@
2001-05-25 Richard Henderson <rth@redhat.com>
* config/i386/i386.md: Revert previous change. Do not apply
the peephole if the components do not die after the sequence.
2001-05-25 Joseph S. Myers <jsm28@cam.ac.uk>
* c-parse.in (array_declarator): New. Handle C99 constructs.
@ -16,7 +21,7 @@
* extend.texi (Attribute Syntax): Document attributes in parameter
array declarators.
2001-05-25 Mark <mark@codesourcery.com>
2001-05-25 Mark Mitchell <mark@codesourcery.com>
* config/i386/i386.md: Make sure cmpstr peepholes do not
affect liveness information.

12
gcc/config/i386/i386.md
View File

@ -15496,7 +15496,7 @@
(set (reg 17)
(compare (match_dup 7) (match_dup 8)))
]
""
"peep2_reg_dead_p (4, operands[7]) && peep2_reg_dead_p (4, operands[8])"
[(parallel[
(set (reg:CC 17)
(compare:CC (mem:BLK (match_dup 4))
@ -15506,9 +15506,7 @@
(use (reg:SI 19))
(clobber (match_dup 0))
(clobber (match_dup 1))
(clobber (match_dup 2))])
(clobber (match_dup 7))
(clobber (match_dup 8))]
(clobber (match_dup 2))])]
"")
;; ...and this one handles cmpstr*_1.
@ -15533,7 +15531,7 @@
(set (reg 17)
(compare (match_dup 7) (match_dup 8)))
]
""
"peep2_reg_dead_p (4, operands[7]) && peep2_reg_dead_p (4, operands[8])"
[(parallel[
(set (reg:CC 17)
(if_then_else:CC (ne (match_dup 6)
@ -15546,9 +15544,7 @@
(use (reg:SI 19))
(clobber (match_dup 0))
(clobber (match_dup 1))
(clobber (match_dup 2))])
(clobber (match_dup 7))
(clobber (match_dup 8))]
(clobber (match_dup 2))])]
"")