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Make sure ssa-name is valid.

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PR tree-optimization/107497
	* tree-vrp.cc (remove_unreachable::remove_and_update_globals):
	Check that ssa-name still exists before accessing it.
This commit is contained in:
Andrew MacLeod 2022-11-01 13:18:33 -04:00
parent e7310e24b1
commit 82b0345f61
1 changed files with 1 additions and 1 deletions
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2
gcc/tree-vrp.cc
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@ -180,7 +180,7 @@ remove_unreachable::remove_and_update_globals (bool final_p)
bitmap_copy (dce, all_exports);
// Don't attempt to DCE parameters.
EXECUTE_IF_SET_IN_BITMAP (all_exports, 0, i, bi)
if (SSA_NAME_IS_DEFAULT_DEF (ssa_name (i)))
if (!ssa_name (i) || SSA_NAME_IS_DEFAULT_DEF (ssa_name (i)))
bitmap_clear_bit (dce, i);
simple_dce_from_worklist (dce);