commit 09884fa0f90da67915245622254cdfb947b87d37
author Richard Biener <rguenther@suse.de> Fri May 30 13:47:55 2025 +0200
committer Richard Biener <rguenther@suse.de> Fri Jun 06 09:53:11 2025 +0200
tree abe5f7883a4e77126a19dc1e49c02192d9e9e52d
parent 44792a6c4253f9a5b322797ef73b9c347c223545

tree-optimization/120341 - stores into STRING_CSTs can trap

The following fixes conditional store elimination and store motion
so they consider stores to STRING_CSTs as trapping.

	PR tree-optimization/120341
	* tree-ssa-loop-im.cc (can_sm_ref_p): STRING_CSTs are readonly.
	* tree-ssa-phiopt.cc (cond_store_replacement): Likewise.

	* gcc.dg/torture/pr120341-1.c: New testcase.
	* gcc.dg/torture/pr120341-2.c: Likewise.

(cherry picked from commit 02c58bc4b0885f5b6f50033da35768ebe6c4a030)