[PATCH] D75669: [ARM][MVE] Enable VMOVN for tail predication

[Sam Parker via Phabricator via llvm-commits]

samparker created this revision.
samparker added reviewers: SjoerdMeijer, dmgreen.
Herald added subscribers: hiraditya, kristof.beyls.
Herald added a project: LLVM.

These instructions also don't change lanes, so make them legal too.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D75669

Files:
  llvm/lib/Target/ARM/ARMInstrMVE.td
  llvm/unittests/Target/ARM/MachineInstrTest.cpp


Index: llvm/unittests/Target/ARM/MachineInstrTest.cpp
===================================================================
--- llvm/unittests/Target/ARM/MachineInstrTest.cpp
+++ llvm/unittests/Target/ARM/MachineInstrTest.cpp
@@ -256,6 +256,10 @@
     case MVE_VMOVimmi32:	
     case MVE_VMOVimmi64:
     case MVE_VMOVimmi8:	
+    case MVE_VMOVNi16bh:
+    case MVE_VMOVNi16th:
+    case MVE_VMOVNi32bh:
+    case MVE_VMOVNi32th:
     case MVE_VMULLBp16:
     case MVE_VMULLBp8:
     case MVE_VMULLBs16:
@@ -321,6 +325,18 @@
     case MVE_VQNEGs16:
     case MVE_VQNEGs32:
     case MVE_VQNEGs8:
+    case MVE_VQMOVNs16bh:
+    case MVE_VQMOVNs16th:
+    case MVE_VQMOVNs32bh:
+    case MVE_VQMOVNs32th:
+    case MVE_VQMOVNu16bh:
+    case MVE_VQMOVNu16th:
+    case MVE_VQMOVNu32bh:
+    case MVE_VQMOVNu32th:
+    case MVE_VQMOVUNs16bh:
+    case MVE_VQMOVUNs16th:
+    case MVE_VQMOVUNs32bh:
+    case MVE_VQMOVUNs32th:
     case MVE_VQRSHL_by_vecs16:
     case MVE_VQRSHL_by_vecs32:
     case MVE_VQRSHL_by_vecs8:
Index: llvm/lib/Target/ARM/ARMInstrMVE.td
===================================================================
--- llvm/lib/Target/ARM/ARMInstrMVE.td
+++ llvm/lib/Target/ARM/ARMInstrMVE.td
@@ -4421,6 +4421,7 @@
   let Inst{8} = 0b0;
   let Inst{7} = !if(!eq(bit_17, 0), 1, 0);
   let Inst{0} = 0b1;
+  let validForTailPredication = 1;
 }
 
 multiclass MVE_VxMOVxN_halves<string iname, string suffix,


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