commit 928bc5b863f126189753e45ef45a40265ae028c5
author Kewen Lin <linkw@linux.ibm.com> Wed Nov 16 23:08:23 2022 -0600
committer Kewen Lin <linkw@linux.ibm.com> Wed Nov 16 23:08:23 2022 -0600
tree dc5bed6a33ea4e1d24f2870fe41257ea608b369b
parent a62d957342e3e9ee9bda812f737279f1166e03ba

Fix typo in gimple_fold_partial_load_store_mem_ref

As Robin spotted, my recent commit r13-3716 caused an ICE
on s390 if vector access with length is enabled there (his
patch for the enablement hasn't been committed yet).  The
failure is caused by one stupid typo, the bias on s390 is
-1, so the assertion should use tree_fits_shwi_p rather
than tree_fits_uhwi_p.  Thanks for Robin's catching.

I just reproduced the ICE and verified the fix worked fine
with a cross build, the optimized dump against the test case
gcc.target/powerpc/pr107412.c looked expected.

gcc/ChangeLog:

	* gimple-fold.cc (gimple_fold_partial_load_store_mem_ref): Use
	tree_fits_shwi_p rather than tree_fits_uhwi_p as bias is signed.