https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112476
Bug ID: 112476
Summary: [14 Regression] unrecognizable insn with -O2
-march=la464 on loongarch64
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: xen0n at gentoo dot org
Target Milestone: ---
Target: loongarch64-linux-gnu
Created attachment 56551
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=56551&action=edit
Minimized reproducer
The attached code minified from Skia, ICEs with "unrecognizable insn" when
compiled with SIMD apparently active and the backend wanting to do something
with it.
According to my preliminary debugging: the bug disappears when the extra layer
of wrapping function is removed, when the two "&a" arguments get changed, and
when the memcpy is rewritten to a simple pointer dereference.
