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re PR target/43920 (Choosing conditional execution over conditional branches for code size in some cases.)

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2011-04-05  Tom de Vries  <tom@codesourcery.com>

	PR target/43920
	* cfgcleanup.c (flow_find_cross_jump): Don't count USE or CLOBBER as
	insn.

From-SVN: r171976
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Tom de Vries 2011-04-05 10:04:44 +00:00 committed by Tom de Vries
parent 0248bceb7b
commit 2a562b0ab3
2 changed files with 10 additions and 1 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2011-04-05 Tom de Vries <tom@codesourcery.com>
PR target/43920
* cfgcleanup.c (flow_find_cross_jump): Don't count USE or CLOBBER as
insn.
2011-04-05 Tom de Vries <tom@codesourcery.com>
* cfgcleanup.c (try_crossjump_bb): Remove 2 superfluous variables.

5
gcc/cfgcleanup.c
View File

@ -1070,6 +1070,7 @@ flow_find_cross_jump (basic_block bb1, basic_block bb2, rtx *f1, rtx *f2)
{
rtx i1, i2, last1, last2, afterlast1, afterlast2;
int ninsns = 0;
rtx p1;
/* Skip simple jumps at the end of the blocks. Complex jumps still
need to be compared for equivalence, which we'll do below. */
@ -1118,7 +1119,9 @@ flow_find_cross_jump (basic_block bb1, basic_block bb2, rtx *f1, rtx *f2)
afterlast1 = last1, afterlast2 = last2;
last1 = i1, last2 = i2;
ninsns++;
p1 = PATTERN (i1);
if (!(GET_CODE (p1) == USE || GET_CODE (p1) == CLOBBER))
ninsns++;
}
i1 = PREV_INSN (i1);