diff options
Diffstat (limited to 'gcc/except.c')
| -rw-r--r-- | gcc/except.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/gcc/except.c b/gcc/except.c index 6c7618339e5..572aad0f842 100644 --- a/gcc/except.c +++ b/gcc/except.c @@ -48,7 +48,7 @@ along with GCC; see the file COPYING3. If not see a given statement does throw. During this lowering process, we create an EH_LANDING_PAD node for each EH_REGION that has some code within the function that needs to be executed if a - throw does happen. We also create RESX statements that are + throw does happen. We also create RESX statements that are used to transfer control from an inner EH_REGION to an outer EH_REGION. We also create EH_DISPATCH statements as placeholders for a runtime type comparison that should be made in order to @@ -75,7 +75,7 @@ along with GCC; see the file COPYING3. If not see handler for the exception must be within a function somewhere up the call chain, so we call back into the exception runtime (__builtin_unwind_resume). - + During pass_expand (cfgexpand.c), we generate REG_EH_REGION notes that create an rtl to eh_region mapping that corresponds to the gimple to eh_region mapping that had been recorded in the @@ -93,7 +93,7 @@ along with GCC; see the file COPYING3. If not see frame are emitted at this time. During pass_convert_to_eh_region_ranges (except.c), we transform - the REG_EH_REGION notes attached to individual insns into + the REG_EH_REGION notes attached to individual insns into non-overlapping ranges of insns bounded by NOTE_INSN_EH_REGION_BEG and NOTE_INSN_EH_REGION_END. Each insn within such ranges has the same associated action within the exception region tree, meaning @@ -611,7 +611,7 @@ duplicate_eh_regions (struct function *ifun, data.eh_map = pointer_map_create (); outer_region = get_eh_region_from_lp_number (outer_lp); - + /* Copy all the regions in the subtree. */ if (copy_region) duplicate_eh_regions_1 (&data, copy_region, outer_region); @@ -1490,7 +1490,7 @@ remove_eh_landing_pad (eh_landing_pad lp) for (pp = &lp->region->landing_pads; *pp != lp; pp = &(*pp)->next_lp) continue; *pp = lp->next_lp; - + if (lp->post_landing_pad) EH_LANDING_PAD_NR (lp->post_landing_pad) = 0; VEC_replace (eh_landing_pad, cfun->eh->lp_array, lp->index, NULL); @@ -1555,7 +1555,7 @@ for_each_eh_label (void (*callback) (rtx)) } /* Create the REG_EH_REGION note for INSN, given its ECF_FLAGS for a - call insn. + call insn. At the gimple level, we use LP_NR > 0 : The statement transfers to landing pad LP_NR |