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author	Richard Biener <rguenther@suse.de>
	Fri, 30 May 2025 11:47:55 +0000 (13:47 +0200)
committer	Richard Biener <rguenther@suse.de>
	Fri, 30 May 2025 13:11:37 +0000 (15:11 +0200)
commit	02c58bc4b0885f5b6f50033da35768ebe6c4a030
tree	b9b01692a4d54a0bd7c7fbdebc167858c7aa44b6	tree
parent	2ffada0296c95898a68bdb67ced738fe788df93a	commit \| diff

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.

gcc/testsuite/gcc.dg/torture/pr120341-1.c	[new file with mode: 0644]	blob
gcc/testsuite/gcc.dg/torture/pr120341-2.c	[new file with mode: 0644]	blob
gcc/tree-ssa-loop-im.cc		diff \| blob \| blame \| history
gcc/tree-ssa-phiopt.cc		diff \| blob \| blame \| history

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