[llvm] 82090cb - [CostModel][X86] Remove unused float x87 costs

[Simon Pilgrim via llvm-commits]

Author: Simon Pilgrim
Date: 2022-09-03T09:59:20+01:00
New Revision: 82090cb85eaa14ca2203aa9b234f132aa7a7a961

URL: https://github.com/llvm/llvm-project/commit/82090cb85eaa14ca2203aa9b234f132aa7a7a961
DIFF: https://github.com/llvm/llvm-project/commit/82090cb85eaa14ca2203aa9b234f132aa7a7a961.diff

LOG: [CostModel][X86] Remove unused float x87 costs

We only need the double costs for SSE1 fallback

Added: 
    

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

Removed: 
    


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diff  --git a/llvm/lib/Target/X86/X86TargetTransformInfo.cpp b/llvm/lib/Target/X86/X86TargetTransformInfo.cpp
index 359e7106c6dec..fff5129130863 100644
--- a/llvm/lib/Target/X86/X86TargetTransformInfo.cpp
+++ b/llvm/lib/Target/X86/X86TargetTransformInfo.cpp
@@ -1165,13 +1165,8 @@ InstructionCost X86TTIImpl::getArithmeticInstrCost(
     { ISD::SUB,  MVT::i16, {  1 } }, // Pentium III from http://www.agner.org/
     { ISD::SUB,  MVT::i32, {  1 } }, // Pentium III from http://www.agner.org/
 
-    { ISD::FNEG, MVT::f32, {  2,  2, 1, 3 } }, // (x87)
     { ISD::FNEG, MVT::f64, {  2,  2, 1, 3 } }, // (x87)
-
-    { ISD::FADD, MVT::f32, {  2,  3, 1, 1 } }, // (x87)
     { ISD::FADD, MVT::f64, {  2,  3, 1, 1 } }, // (x87)
-
-    { ISD::FSUB, MVT::f32, {  2,  3, 1, 1 } }, // (x87)
     { ISD::FSUB, MVT::f64, {  2,  3, 1, 1 } }, // (x87)
   };