PR rtl-optimization/123833: Use of insn attributes in insn_costs corrupts recog_data.HEADtrunkmaster

Thanks again to Jeff Law and Andrew Pinski.  Here's a revised patch that
addresses the true underlying cause of PR 128333.  recog.cc's cancel_changes
was not correctly updating the recog_data cache, which leads to strange
(incorrect) behavior in fwprop and ifcvt.

2026-02-07  Roger Sayle  <roger@nextmovesoftware.com>
	    Andrew Pinski  <andrew.pinski@oss.qualcomm.com>
	    Jeff Law  <jeffrey.law@oss.qualcomm.com>

gcc/ChangeLog
	PR rtl-optimization/123833
	* recog.cc (cancel_changes): Update the recog_data cache if it
	holds the instruction being changed.

gcc/testsuite
	PR rtl-optimization/123833
	* gcc.target/mips/pr123833.c: New test case.

0 files changed, 0 insertions, 0 deletions