Added TESTM and TESTNM to the list of instructions that already zeroing unused upper bits
and does not need the redundant shift left and shift right instructions afterwards.
Added a pattern for TESTM and TESTNM in iselLowering, so now icmp(neq,and(X,Y), 0) goes folds into TESTM
and icmp(eq,and(X,Y), 0) goes folds into TESTNM
This commit is a preparation for lowering the test and testn X86 intrinsics to IR.
Differential Revision: https://reviews.llvm.org/D38732
llvm-svn: 317465
Adding this test files now so after another commit that will add a new pattern for
TESTM and TESTNM instructions will show the improvemnts that have been done.
Change-Id: If3908b7f91897d764053312365a2bc1de78b291d
llvm-svn: 315443
Uriel Korach