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| author | Ian Lance Taylor <iant@golang.org> | 2021-09-13 10:37:49 -0700 |
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| committer | Ian Lance Taylor <iant@golang.org> | 2021-09-13 10:37:49 -0700 |
| commit | e252b51ccde010cbd2a146485d8045103cd99533 (patch) | |
| tree | e060f101cdc32bf5e520de8e5275db9d4236b74c /gcc/tree-ssa-ter.c | |
| parent | f10c7c4596dda99d2ee872c995ae4aeda65adbdf (diff) | |
| parent | 104c05c5284b7822d770ee51a7d91946c7e56d50 (diff) | |
| download | gcc-e252b51ccde010cbd2a146485d8045103cd99533.zip gcc-e252b51ccde010cbd2a146485d8045103cd99533.tar.gz gcc-e252b51ccde010cbd2a146485d8045103cd99533.tar.bz2 | |
Merge from trunk revision 104c05c5284b7822d770ee51a7d91946c7e56d50.
Diffstat (limited to 'gcc/tree-ssa-ter.c')
| -rw-r--r-- | gcc/tree-ssa-ter.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/gcc/tree-ssa-ter.c b/gcc/tree-ssa-ter.c index 9eb8a11..3a057c2 100644 --- a/gcc/tree-ssa-ter.c +++ b/gcc/tree-ssa-ter.c @@ -658,11 +658,15 @@ find_replaceable_in_bb (temp_expr_table *tab, basic_block bb) substitution list, or the def and use span a call such that we'll expand lifetimes across a call. We also don't want to replace across these expressions that may call libcalls that - clobber the register involved. See PR 70184. */ + clobber the register involved. See PR 70184. Neither + do we want to move possibly trapping expressions across + a call. See PRs 102129 and 33593. */ if (gimple_has_volatile_ops (stmt) || same_root_var || (tab->call_cnt[ver] != cur_call_cnt - && SINGLE_SSA_USE_OPERAND (SSA_NAME_DEF_STMT (use), SSA_OP_USE) - == NULL_USE_OPERAND_P) + && (SINGLE_SSA_USE_OPERAND (SSA_NAME_DEF_STMT (use), + SSA_OP_USE) + == NULL_USE_OPERAND_P + || gimple_could_trap_p (SSA_NAME_DEF_STMT (use)))) || tab->reg_vars_cnt[ver] != cur_reg_vars_cnt) finished_with_expr (tab, ver, true); else |