[llvm] r364158 - [X86] Fix isel pattern that was looking for a bitcasted load. Remove what appears to be a copy/paste mistake.

[Craig Topper via llvm-commits]

Author: ctopper
Date: Sun Jun 23 12:17:50 2019
New Revision: 364158

URL: http://llvm.org/viewvc/llvm-project?rev=364158&view=rev
Log:
[X86] Fix isel pattern that was looking for a bitcasted load. Remove what appears to be a copy/paste mistake.

DAG combine should ensure bitcasts of loads don't exist.

Also remove 3 patterns that are identical to the block above them.

Modified:
    llvm/trunk/lib/Target/X86/X86InstrAVX512.td

Modified: llvm/trunk/lib/Target/X86/X86InstrAVX512.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86InstrAVX512.td?rev=364158&r1=364157&r2=364158&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/X86InstrAVX512.td (original)
+++ llvm/trunk/lib/Target/X86/X86InstrAVX512.td Sun Jun 23 12:17:50 2019
@@ -9797,19 +9797,7 @@ defm : AVX512_pmovx_patterns<"VPMOVZX",
 let Predicates = [HasAVX512, NoBWI] in {
 def: Pat<(v16i8 (trunc (v16i16 VR256X:$src))),
          (VPMOVDBZrr (v16i32 (VPMOVZXWDZrr VR256X:$src)))>;
-def: Pat<(v16i8 (trunc (bc_v16i16 (loadv4i64 addr:$src)))),
-         (VPMOVDBZrr (v16i32 (VPMOVZXWDZrm addr:$src)))>;
-def: Pat<(store (v16i8 (trunc (v16i16 VR256X:$src))), addr:$dst),
-         (VPMOVDBZmr addr:$dst, (v16i32 (VPMOVZXWDZrr VR256X:$src)))>;
-}
-
-// Without BWI we can't do a trunc from v16i16 to v16i8. DAG combine can merge
-// ext+trunc aggresively making it impossible to legalize the DAG to this
-// pattern directly.
-let Predicates = [HasAVX512, NoBWI] in {
-def: Pat<(v16i8 (trunc (v16i16 VR256X:$src))),
-         (VPMOVDBZrr (v16i32 (VPMOVZXWDZrr VR256X:$src)))>;
-def: Pat<(v16i8 (trunc (bc_v16i16 (loadv4i64 addr:$src)))),
+def: Pat<(v16i8 (trunc (loadv16i16 addr:$src))),
          (VPMOVDBZrr (v16i32 (VPMOVZXWDZrm addr:$src)))>;
 def: Pat<(store (v16i8 (trunc (v16i16 VR256X:$src))), addr:$dst),
          (VPMOVDBZmr addr:$dst, (v16i32 (VPMOVZXWDZrr VR256X:$src)))>;