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| author | kan <kan@FreeBSD.org> | 2006-08-26 21:29:10 +0000 |
|---|---|---|
| committer | kan <kan@FreeBSD.org> | 2006-08-26 21:29:10 +0000 |
| commit | ab6c6e434e4ca0bf593007d49dee6eceb73286c0 (patch) | |
| tree | 843ffc6140f66bf60562adb1bf8d3d82b9739b5e /contrib/gcc/global.c | |
| parent | 8a6911d2bb988a943624cbf4e4041b827d9ade53 (diff) | |
| download | FreeBSD-src-ab6c6e434e4ca0bf593007d49dee6eceb73286c0.zip FreeBSD-src-ab6c6e434e4ca0bf593007d49dee6eceb73286c0.tar.gz | |
Gcc 3.4.6 as of 2006/08/25 #116475.
Diffstat (limited to 'contrib/gcc/global.c')
| -rw-r--r-- | contrib/gcc/global.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/contrib/gcc/global.c b/contrib/gcc/global.c index de765b3..13e41cb 100644 --- a/contrib/gcc/global.c +++ b/contrib/gcc/global.c @@ -96,6 +96,9 @@ struct allocno /* Number of calls crossed by each allocno. */ int calls_crossed; + /* Number of calls that might throw crossed by each allocno. */ + int throwing_calls_crossed; + /* Number of refs to each allocno. */ int n_refs; @@ -469,6 +472,8 @@ global_alloc (FILE *file) allocno[num].reg = i; allocno[num].size = PSEUDO_REGNO_SIZE (i); allocno[num].calls_crossed += REG_N_CALLS_CROSSED (i); + allocno[num].throwing_calls_crossed + += REG_N_THROWING_CALLS_CROSSED (i); allocno[num].n_refs += REG_N_REFS (i); allocno[num].freq += REG_FREQ (i); if (allocno[num].live_length < REG_LIVE_LENGTH (i)) @@ -1187,9 +1192,11 @@ find_reg (int num, HARD_REG_SET losers, int alt_regs_p, int accept_call_clobbere { /* Did not find a register. If it would be profitable to allocate a call-clobbered register and save and restore it - around calls, do that. */ + around calls, do that. Don't do this if it crosses any calls + that might throw. */ if (! accept_call_clobbered && allocno[num].calls_crossed != 0 + && allocno[num].throwing_calls_crossed == 0 && CALLER_SAVE_PROFITABLE (allocno[num].n_refs, allocno[num].calls_crossed)) { |
