[llvm] 59dbd6a - [CostModel][X86] Remove redundant AVX512 v64i8 shift costs

[Simon Pilgrim via llvm-commits]

Author: Simon Pilgrim
Date: 2022-09-04T14:06:26+01:00
New Revision: 59dbd6a0cfbcb48001a0cac8493f94783333a9a4

URL: https://github.com/llvm/llvm-project/commit/59dbd6a0cfbcb48001a0cac8493f94783333a9a4
DIFF: https://github.com/llvm/llvm-project/commit/59dbd6a0cfbcb48001a0cac8493f94783333a9a4.diff

LOG: [CostModel][X86] Remove redundant AVX512 v64i8 shift costs

These are handled earlier (and more accurately) in AVX512BWShiftCostTable

Added: 
    

Modified: 
    llvm/lib/Target/X86/X86TargetTransformInfo.cpp

Removed: 
    


################################################################################
diff  --git a/llvm/lib/Target/X86/X86TargetTransformInfo.cpp b/llvm/lib/Target/X86/X86TargetTransformInfo.cpp
index 5126796206ca..641e4611e113 100644
--- a/llvm/lib/Target/X86/X86TargetTransformInfo.cpp
+++ b/llvm/lib/Target/X86/X86TargetTransformInfo.cpp
@@ -641,10 +641,6 @@ InstructionCost X86TTIImpl::getArithmeticInstrCost(
         return LT.first * KindCost.value();
 
   static const CostKindTblEntry AVX512BWCostTable[] = {
-    { ISD::SHL,   MVT::v64i8,   { 11 } }, // vpblendvb sequence.
-    { ISD::SRL,   MVT::v64i8,   { 11 } }, // vpblendvb sequence.
-    { ISD::SRA,   MVT::v64i8,   { 24 } }, // vpblendvb sequence.
-
     { ISD::ADD,   MVT::v64i8,   {  1,  1, 1, 1 } }, // paddb
     { ISD::ADD,   MVT::v32i16,  {  1,  1, 1, 1 } }, // paddw