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| author | Tom de Vries <tom@codesourcery.com> | 2011-04-05 10:04:44 +0000 |
|---|---|---|
| committer | Tom de Vries <vries@gcc.gnu.org> | 2011-04-05 10:04:44 +0000 |
| commit | 2a562b0ab31fe77a48dcaca05d2e6d31c29bbeab (patch) | |
| tree | efebfadb72641a3bc09407f8a2fef2b8cdf0f672 /gcc | |
| parent | 0248bceb7ba8fa849dc3c06d170edb8ce6d96d14 (diff) | |
| download | gcc-2a562b0ab31fe77a48dcaca05d2e6d31c29bbeab.zip gcc-2a562b0ab31fe77a48dcaca05d2e6d31c29bbeab.tar.gz gcc-2a562b0ab31fe77a48dcaca05d2e6d31c29bbeab.tar.bz2 | |
re PR target/43920 (Choosing conditional execution over conditional branches for code size in some cases.)
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
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/cfgcleanup.c | 5 |
2 files changed, 10 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index d9bc24e..6cde480 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,11 @@ 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. 2011-04-05 Yufeng Zhang <yufeng.zhang@arm.com> diff --git a/gcc/cfgcleanup.c b/gcc/cfgcleanup.c index 6178b59..112cb49 100644 --- a/gcc/cfgcleanup.c +++ b/gcc/cfgcleanup.c @@ -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); |