From: Richard Biener <rguenther@suse.de>
Date: Fri, 30 Sep 2022 10:47:22 +0000 (+0200)
Subject: tree-optimization/107095 - fix typo in .MASK_STORE DSE handling
X-Git-Tag: basepoints/gcc-14~4226
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=44510e44e717d9c05b0c5d197a73676a9427e32f;p=thirdparty%2Fgcc.git

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 --git a/gcc/tree-ssa-dse.cc b/gcc/tree-ssa-dse.cc
index 2411ac711ded..c14e5e43eb35 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;