diff options
| author | krebbel <krebbel@138bc75d-0d04-0410-961f-82ee72b054a4> | 2006-09-13 10:59:03 +0000 |
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| committer | krebbel <krebbel@138bc75d-0d04-0410-961f-82ee72b054a4> | 2006-09-13 10:59:03 +0000 |
| commit | 467b5d379cc0d9359efb6e08216e532249b79b7d (patch) | |
| tree | d8fd1e5efab556d1ff0ca0b73b5f295e5373292b /gcc/global.c | |
| parent | 23c79c0fa4febbb3bfc0c563eab73da376fb6bb0 (diff) | |
| download | gcc-467b5d379cc0d9359efb6e08216e532249b79b7d.tar.gz | |
2006-09-13 Andreas Krebbel <krebbel1@de.ibm.com>
* flow.c (calculate_global_regs_live): Invalidate eh registers
on eh edges. Renamed invalidated_by_call to invalidated_by_eh_edge.
(propagate_block): Handle eh registers as if they were set at basic
block start.
* except.c (dw2_build_landing_pads): Don't emit clobbers for eh
registers.
* global.c (global_conflicts): Make eh registers to conflict with
pseudos live at basic block begin.
* basic_block.h (bb_has_eh_pred): New function.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@116920 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/global.c')
| -rw-r--r-- | gcc/global.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/gcc/global.c b/gcc/global.c index 7bc9233c434..229f862c28c 100644 --- a/gcc/global.c +++ b/gcc/global.c @@ -743,6 +743,21 @@ global_conflicts (void) scan the instruction that makes either X or Y become live. */ record_conflicts (block_start_allocnos, ax); +#ifdef EH_RETURN_DATA_REGNO + if (bb_has_eh_pred (b)) + { + unsigned int i; + + for (i = 0; ; ++i) + { + unsigned int regno = EH_RETURN_DATA_REGNO (i); + if (regno == INVALID_REGNUM) + break; + record_one_conflict (regno); + } + } +#endif + /* Pseudos can't go in stack regs at the start of a basic block that is reached by an abnormal edge. Likewise for call clobbered regs, because caller-save, fixup_abnormal_edges and possibly the table |