https://gcc.gnu.org/g:44510e44e717d9c05b0c5d197a73676a9427e32f commit r13-2981-g44510e44e717d9c05b0c5d197a73676a9427e32f Author: Richard Biener <rguenther@suse.de> Date: Fri Sep 30 12:47:22 2022 +0200 tree-optimization/107095 - fix typo in .MASK_STORE DSE handling We were using the size of the mask argument rather than the data argument for the ao_ref. PR tree-optimization/107095 * tree-ssa-dse.cc (initialize_ao_ref_for_dse): Use data arg for .MASK_STORE size. Diff: --- gcc/tree-ssa-dse.cc | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/gcc/tree-ssa-dse.cc b/gcc/tree-ssa-dse.cc index 2411ac711de..c14e5e43eb3 100644 --- a/gcc/tree-ssa-dse.cc +++ b/gcc/tree-ssa-dse.cc @@ -170,7 +170,7 @@ initialize_ao_ref_for_dse (gimple *stmt, ao_ref *write, bool may_def_ok = false) { ao_ref_init_from_ptr_and_size (write, gimple_call_arg (stmt, 0), - TYPE_SIZE_UNIT (TREE_TYPE (gimple_call_arg (stmt, 2)))); + TYPE_SIZE_UNIT (TREE_TYPE (gimple_call_arg (stmt, 3)))); return true; } break;