* [COMMITTED] PR tree-optimization/107497 - Make sure ssa-name is valid.
@ 2022-11-01 18:04 Andrew MacLeod
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From: Andrew MacLeod @ 2022-11-01 18:04 UTC (permalink / raw)
To: gcc-patches; +Cc: hernandez, aldy
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pushed as obvious. Testing running.
Andrew
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commit 82b0345f6137b112728590d7c010dcd2cef08514
Author: Andrew MacLeod <amacleod@redhat.com>
Date: Tue Nov 1 13:18:33 2022 -0400
Make sure ssa-name is valid.
PR tree-optimization/107497
* tree-vrp.cc (remove_unreachable::remove_and_update_globals):
Check that ssa-name still exists before accessing it.
diff --git a/gcc/tree-vrp.cc b/gcc/tree-vrp.cc
index f0e4d37bef0..39f7eb7a75e 100644
--- a/gcc/tree-vrp.cc
+++ b/gcc/tree-vrp.cc
@@ -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);
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2022-11-01 18:04 [COMMITTED] PR tree-optimization/107497 - Make sure ssa-name is valid Andrew MacLeod
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