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| author | Richard Biener <rguenther@suse.de> | 2021-05-04 13:39:14 +0200 |
|---|---|---|
| committer | Richard Biener <rguenther@suse.de> | 2021-05-04 15:51:05 +0200 |
| commit | 7a3897661151cf8cc77d11f7a98fc64259210748 (patch) | |
| tree | 20a29b0a23a85ce74dfeb9a8e251acea41f55fef /gcc/tree-ssa-phiopt.c | |
| parent | 1580fc764423bf89e9b853aaa8c65999e37ccb8b (diff) | |
| download | gcc-7a3897661151cf8cc77d11f7a98fc64259210748.zip gcc-7a3897661151cf8cc77d11f7a98fc64259210748.tar.gz gcc-7a3897661151cf8cc77d11f7a98fc64259210748.tar.bz2 | |
tree-optimization/100414 - compute dominance info in phiopt
phiopt now has dominator queries but fails to compute dominance
info.
2021-05-04 Richard Biener <rguenther@suse.de>
PR tree-optimization/100414
* tree-ssa-phiopt.c (get_non_trapping): Do not compute dominance
info here.
(tree_ssa_phiopt_worker): But unconditionally here.
* gcc.dg/pr100414.c: New testcase.
Diffstat (limited to 'gcc/tree-ssa-phiopt.c')
| -rw-r--r-- | gcc/tree-ssa-phiopt.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/gcc/tree-ssa-phiopt.c b/gcc/tree-ssa-phiopt.c index 35ce51e..5c18ea1 100644 --- a/gcc/tree-ssa-phiopt.c +++ b/gcc/tree-ssa-phiopt.c @@ -174,6 +174,8 @@ tree_ssa_phiopt_worker (bool do_store_elim, bool do_hoist_loads, bool early_p) bool cfgchanged = false; hash_set<tree> *nontrap = 0; + calculate_dominance_info (CDI_DOMINATORS); + if (do_store_elim) /* Calculate the set of non-trapping memory accesses. */ nontrap = get_non_trapping (); @@ -2438,9 +2440,6 @@ get_non_trapping (void) { nt_call_phase = 0; hash_set<tree> *nontrap = new hash_set<tree>; - /* We're going to do a dominator walk, so ensure that we have - dominance information. */ - calculate_dominance_info (CDI_DOMINATORS); nontrapping_dom_walker (CDI_DOMINATORS, nontrap) .walk (cfun->cfg->x_entry_block_ptr); |