1 files changed, 11 insertions, 1 deletions
diff --git a/llvm/lib/Target/Hexagon/HexagonIICHVX.td b/llvm/lib/Target/Hexagon/HexagonIICHVX.td
index 1493d52f08e..a804c5a80d0 100644
--- a/llvm/lib/Target/Hexagon/HexagonIICHVX.td
+++ b/llvm/lib/Target/Hexagon/HexagonIICHVX.td
@@ -7,6 +7,7 @@
 //
 //===----------------------------------------------------------------------===//
 
+def CVI_GATHER_PSEUDO : InstrItinClass;
 def CVI_VA            : InstrItinClass;
 
 class HVXItin {
@@ -14,5 +15,14 @@ class HVXItin {
     InstrItinData<CVI_VA,
       [InstrStage<1, [SLOT0,SLOT1,SLOT2,SLOT3], 0>,
        InstrStage<1, [CVI_XLANE,CVI_SHIFT, CVI_MPY0, CVI_MPY1]>],
-      [9, 7, 7, 7], [HVX_FWD, HVX_FWD, HVX_FWD]>];
+      [9, 7, 7, 7], [HVX_FWD, HVX_FWD, HVX_FWD]>,
+
+    // Used by Gather Pseudo Instructions which are expanded into
+    // V6_vgather* and V6_vS32b_new_ai. Even though these instructions
+    // use CVI_ST resource, it's not included below to avoid having more than
+    // 4 InstrStages and thus changing 'MaxResTerms' to 5.
+    InstrItinData <CVI_GATHER_PSEUDO,
+      [InstrStage<1, [SLOT0], 0>,
+       InstrStage<1, [CVI_LD], 0>, InstrStage<1, [CVI_ST], 0>,
+       InstrStage<1, [CVI_MPY01, CVI_XLSHF]>]>];
 }