[PATCH] D103144: [X86][Costmodel] Load/store v2i16 VF=2 interleaving costs

[Roman Lebedev via Phabricator via llvm-commits]

This revision was landed with ongoing or failed builds.
This revision was automatically updated to reflect the committed changes.
Closed by commit rGd9413f46b308: [X86][Costmodel] Load/store i16 VF=2 interleaving costs (authored by lebedev.ri).

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D103144/new/

https://reviews.llvm.org/D103144

Files:
  llvm/lib/Target/X86/X86TargetTransformInfo.cpp
  llvm/test/Analysis/CostModel/X86/interleaved-load-i16-stride-2.ll
  llvm/test/Analysis/CostModel/X86/interleaved-store-i16-stride-2.ll


Index: llvm/test/Analysis/CostModel/X86/interleaved-store-i16-stride-2.ll
===================================================================
--- llvm/test/Analysis/CostModel/X86/interleaved-store-i16-stride-2.ll
+++ llvm/test/Analysis/CostModel/X86/interleaved-store-i16-stride-2.ll
@@ -9,7 +9,7 @@
 
 ; CHECK: LV: Checking a loop in "test"
 ; CHECK: LV: Found an estimated cost of 1 for VF 1 For instruction:   store i16 %v1, i16* %out1, align 2
-; CHECK: LV: Found an estimated cost of 9 for VF 2 For instruction:   store i16 %v1, i16* %out1, align 2
+; CHECK: LV: Found an estimated cost of 2 for VF 2 For instruction:   store i16 %v1, i16* %out1, align 2
 ; CHECK: LV: Found an estimated cost of 17 for VF 4 For instruction:   store i16 %v1, i16* %out1, align 2
 ; CHECK: LV: Found an estimated cost of 49 for VF 8 For instruction:   store i16 %v1, i16* %out1, align 2
 ; CHECK: LV: Found an estimated cost of 114 for VF 16 For instruction:   store i16 %v1, i16* %out1, align 2
Index: llvm/test/Analysis/CostModel/X86/interleaved-load-i16-stride-2.ll
===================================================================
--- llvm/test/Analysis/CostModel/X86/interleaved-load-i16-stride-2.ll
+++ llvm/test/Analysis/CostModel/X86/interleaved-load-i16-stride-2.ll
@@ -9,7 +9,7 @@
 
 ; CHECK: LV: Checking a loop in "test"
 ; CHECK: LV: Found an estimated cost of 1 for VF 1 For instruction:   %v0 = load i16, i16* %in0, align 2
-; CHECK: LV: Found an estimated cost of 9 for VF 2 For instruction:   %v0 = load i16, i16* %in0, align 2
+; CHECK: LV: Found an estimated cost of 3 for VF 2 For instruction:   %v0 = load i16, i16* %in0, align 2
 ; CHECK: LV: Found an estimated cost of 17 for VF 4 For instruction:   %v0 = load i16, i16* %in0, align 2
 ; CHECK: LV: Found an estimated cost of 41 for VF 8 For instruction:   %v0 = load i16, i16* %in0, align 2
 ; CHECK: LV: Found an estimated cost of 114 for VF 16 For instruction:   %v0 = load i16, i16* %in0, align 2
Index: llvm/lib/Target/X86/X86TargetTransformInfo.cpp
===================================================================
--- llvm/lib/Target/X86/X86TargetTransformInfo.cpp
+++ llvm/lib/Target/X86/X86TargetTransformInfo.cpp
@@ -5063,6 +5063,8 @@
   // The cost of the loads/stores is accounted for separately.
   //
   static const CostTblEntry AVX2InterleavedLoadTbl[] = {
+      {2, MVT::v2i16, 2}, // (load 4i16 and) deinterleave into 2 x 2i16
+
       {2, MVT::v4i64, 6}, // (load 8i64 and) deinterleave into 2 x 4i64
 
       {3, MVT::v2i8, 10},  // (load 6i8 and) deinterleave into 3 x 2i8
@@ -5083,6 +5085,8 @@
   };
 
   static const CostTblEntry AVX2InterleavedStoreTbl[] = {
+      {2, MVT::v2i16, 1}, // interleave 2 x 2i16 into 4i16 (and store)
+
       {2, MVT::v4i64, 6}, // interleave 2 x 4i64 into 8i64 (and store)
 
       {3, MVT::v2i8, 7},   // interleave 3 x 2i8 into 6i8 (and store)


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