https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80040
Bug ID: 80040
Summary: SSE4.1 ptest not always merged
Product: gcc
Version: 6.3.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: linux at carewolf dot com
Target Milestone: ---
Created attachment 40971
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40971&action=edit
Example
The intrinsics _mm_testz_si128 and _mm_testc_si128 both map to the exact same
instruction and parameters. They are sometimes merged to just one instruction
call, but not always.
I have attached and example where in the first function the two intrinsics are
merge but in the second are not.
