Extended Description

For this code:
bb122:
%tmp124 = ptrtoint %struct.TypHeader* %hdR to bool
%i.3.in.in = select bool %tmp124, %struct.TypHeader* %hdR, %struct.TypHeader* %hdL
%hdR_addr.0 = select bool %tmp124, %struct.TypHeader* %hdL, %struct.TypHeader*
%hdR

llc is generating:
.BB1_3: #bb122
movl %eax, %ebx
# TRUNCATE movb %bl, %bl
testb %bl, %bl
movl %eax, %edi
cmovne %esi, %edi
testb %bl, %bl
cmovne %eax, %esi

It looks like the recent DAGCombiner changes missed a case for the select
instruction.

Test cases will be attached.