When a TREE_OPERAND is NULL, do not cache it.
Regstrapped on x86_64-linux-gnu. Ok to install?
for gcc/ChangeLog
* tree-ssa-loop-niter.cc (expand_simple_operands): Refrain
from caching NULL TREE_OPERANDs.
---
gcc/tree-ssa-loop-niter.cc | 2 ++
1 file changed, 2 insertions(+)
diff --git a/gcc/tree-ssa-loop-niter.cc b/gcc/tree-ssa-loop-niter.cc
index fece876099c16..17645648326e8 100644
--- a/gcc/tree-ssa-loop-niter.cc
+++ b/gcc/tree-ssa-loop-niter.cc
@@ -2325,6 +2325,8 @@ expand_simple_operations (tree expr, tree stop,
hash_map<tree, tree> &cache)
for (i = 0; i < n; i++)
{
e = TREE_OPERAND (expr, i);
+ if (!e)
+ continue;
/* SCEV analysis feeds us with a proper expression
graph matching the SSA graph. Avoid turning it
into a tree here, thus handle tree sharing
--
Alexandre Oliva, happy hacker https://FSFLA.org/blogs/lxo/
Free Software Activist GNU Toolchain Engineer
Disinformation flourishes because many people care deeply about injustice
but very few check the facts. Ask me about <https://stallmansupport.org>
