[Analysis] Fix getOrderedReductionCost to call target's getArithmeticInstrCost implementation

[RKSimon]

Summary

The getOrderedReductionCost implementation introduced in D105432 calls the CRTP base version getArithmeticInstrCost instead of the redirecting to the target version.

[RKSimon]

llvm/include/llvm/CodeGen/BasicTTIImpl.h

2093

Just to be clear - this getScalarizationOverhead call isn't replaced by a target version, its just a base class wrapper that calls the target's DemandedElts variant of getScalarizationOverhead

[david-arm]

LGTM! Thanks for fixing my bug. :)

llvm/include/llvm/CodeGen/BasicTTIImpl.h

InstructionCost getOrderedReductionCost(unsigned Opcode, VectorType *Ty,
                                           TTI::TargetCostKind CostKind) {
     // Targets must implement a default value for the scalable case, since
     // we don't know how many lanes the vector has.
     if (isa<ScalableVectorType>(Ty))
       return InstructionCost::getInvalid();
 
     auto *VTy = cast<FixedVectorType>(Ty);
     InstructionCost ExtractCost =
         getScalarizationOverhead(VTy, /*Insert=*/false, /*Extract=*/true);
-    InstructionCost ArithCost =
-        getArithmeticInstrCost(Opcode, VTy->getElementType(), CostKind);
+    InstructionCost ArithCost = thisT()->getArithmeticInstrCost(
+        Opcode, VTy->getElementType(), CostKind);
     ArithCost *= VTy->getNumElements();
 
     return ExtractCost + ArithCost;
   }
 
   InstructionCost getArithmeticReductionCost(unsigned Opcode, VectorType *Ty,
                                              Optional<FastMathFlags> FMF,
                                              TTI::TargetCostKind CostKind) {

llvm/test/Analysis/CostModel/X86/reduce-fadd.ll

 ; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py
 ; RUN: opt < %s -cost-model -mtriple=x86_64-apple-darwin -analyze -mattr=+sse2 | FileCheck %s --check-prefixes=SSE2
 ; RUN: opt < %s -cost-model -mtriple=x86_64-apple-darwin -analyze -mattr=+ssse3 | FileCheck %s --check-prefixes=SSSE3
 ; RUN: opt < %s -cost-model -mtriple=x86_64-apple-darwin -analyze -mattr=+sse4.1 | FileCheck %s --check-prefixes=SSE41
 ; RUN: opt < %s -cost-model -mtriple=x86_64-apple-darwin -analyze -mattr=+sse4.2 | FileCheck %s --check-prefixes=SSE42
 ; RUN: opt < %s -cost-model -mtriple=x86_64-apple-darwin -analyze -mattr=+avx | FileCheck %s --check-prefixes=AVX1
 ; RUN: opt < %s -cost-model -mtriple=x86_64-apple-darwin -analyze -mattr=+avx2 | FileCheck %s --check-prefixes=AVX2
 ; RUN: opt < %s -cost-model -mtriple=x86_64-apple-darwin -analyze -mattr=+avx512f | FileCheck %s --check-prefixes=AVX512
 ; RUN: opt < %s -cost-model -mtriple=x86_64-apple-darwin -analyze -mattr=+avx512f,+avx512bw | FileCheck %s --check-prefixes=AVX512
 ; RUN: opt < %s -cost-model -mtriple=x86_64-apple-darwin -analyze -mattr=+avx512f,+avx512dq | FileCheck %s --check-prefixes=AVX512
 
 define void @reduce_f64(double %arg) {
 ; SSE2-LABEL: 'reduce_f64'
-; SSE2-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %V1 = call double @llvm.vector.reduce.fadd.v1f64(double %arg, <1 x double> undef)
-; SSE2-NEXT:  Cost Model: Found an estimated cost of 9 for instruction: %V2 = call double @llvm.vector.reduce.fadd.v2f64(double %arg, <2 x double> undef)
-; SSE2-NEXT:  Cost Model: Found an estimated cost of 18 for instruction: %V4 = call double @llvm.vector.reduce.fadd.v4f64(double %arg, <4 x double> undef)
-; SSE2-NEXT:  Cost Model: Found an estimated cost of 36 for instruction: %V8 = call double @llvm.vector.reduce.fadd.v8f64(double %arg, <8 x double> undef)
-; SSE2-NEXT:  Cost Model: Found an estimated cost of 72 for instruction: %V16 = call double @llvm.vector.reduce.fadd.v16f64(double %arg, <16 x double> undef)
+; SSE2-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %V1 = call double @llvm.vector.reduce.fadd.v1f64(double %arg, <1 x double> undef)
+; SSE2-NEXT:  Cost Model: Found an estimated cost of 5 for instruction: %V2 = call double @llvm.vector.reduce.fadd.v2f64(double %arg, <2 x double> undef)
+; SSE2-NEXT:  Cost Model: Found an estimated cost of 10 for instruction: %V4 = call double @llvm.vector.reduce.fadd.v4f64(double %arg, <4 x double> undef)
+; SSE2-NEXT:  Cost Model: Found an estimated cost of 20 for instruction: %V8 = call double @llvm.vector.reduce.fadd.v8f64(double %arg, <8 x double> undef)
+; SSE2-NEXT:  Cost Model: Found an estimated cost of 40 for instruction: %V16 = call double @llvm.vector.reduce.fadd.v16f64(double %arg, <16 x double> undef)
 ; SSE2-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret void
 ;
 ; SSSE3-LABEL: 'reduce_f64'
-; SSSE3-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %V1 = call double @llvm.vector.reduce.fadd.v1f64(double %arg, <1 x double> undef)
-; SSSE3-NEXT:  Cost Model: Found an estimated cost of 9 for instruction: %V2 = call double @llvm.vector.reduce.fadd.v2f64(double %arg, <2 x double> undef)
-; SSSE3-NEXT:  Cost Model: Found an estimated cost of 18 for instruction: %V4 = call double @llvm.vector.reduce.fadd.v4f64(double %arg, <4 x double> undef)
-; SSSE3-NEXT:  Cost Model: Found an estimated cost of 36 for instruction: %V8 = call double @llvm.vector.reduce.fadd.v8f64(double %arg, <8 x double> undef)
-; SSSE3-NEXT:  Cost Model: Found an estimated cost of 72 for instruction: %V16 = call double @llvm.vector.reduce.fadd.v16f64(double %arg, <16 x double> undef)
+; SSSE3-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %V1 = call double @llvm.vector.reduce.fadd.v1f64(double %arg, <1 x double> undef)
+; SSSE3-NEXT:  Cost Model: Found an estimated cost of 5 for instruction: %V2 = call double @llvm.vector.reduce.fadd.v2f64(double %arg, <2 x double> undef)
+; SSSE3-NEXT:  Cost Model: Found an estimated cost of 10 for instruction: %V4 = call double @llvm.vector.reduce.fadd.v4f64(double %arg, <4 x double> undef)
+; SSSE3-NEXT:  Cost Model: Found an estimated cost of 20 for instruction: %V8 = call double @llvm.vector.reduce.fadd.v8f64(double %arg, <8 x double> undef)
+; SSSE3-NEXT:  Cost Model: Found an estimated cost of 40 for instruction: %V16 = call double @llvm.vector.reduce.fadd.v16f64(double %arg, <16 x double> undef)
 ; SSSE3-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret void
 ;
 ; SSE41-LABEL: 'reduce_f64'
-; SSE41-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %V1 = call double @llvm.vector.reduce.fadd.v1f64(double %arg, <1 x double> undef)
-; SSE41-NEXT:  Cost Model: Found an estimated cost of 9 for instruction: %V2 = call double @llvm.vector.reduce.fadd.v2f64(double %arg, <2 x double> undef)
-; SSE41-NEXT:  Cost Model: Found an estimated cost of 18 for instruction: %V4 = call double @llvm.vector.reduce.fadd.v4f64(double %arg, <4 x double> undef)
-; SSE41-NEXT:  Cost Model: Found an estimated cost of 36 for instruction: %V8 = call double @llvm.vector.reduce.fadd.v8f64(double %arg, <8 x double> undef)
-; SSE41-NEXT:  Cost Model: Found an estimated cost of 72 for instruction: %V16 = call double @llvm.vector.reduce.fadd.v16f64(double %arg, <16 x double> undef)
+; SSE41-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %V1 = call double @llvm.vector.reduce.fadd.v1f64(double %arg, <1 x double> undef)
+; SSE41-NEXT:  Cost Model: Found an estimated cost of 5 for instruction: %V2 = call double @llvm.vector.reduce.fadd.v2f64(double %arg, <2 x double> undef)
+; SSE41-NEXT:  Cost Model: Found an estimated cost of 10 for instruction: %V4 = call double @llvm.vector.reduce.fadd.v4f64(double %arg, <4 x double> undef)
+; SSE41-NEXT:  Cost Model: Found an estimated cost of 20 for instruction: %V8 = call double @llvm.vector.reduce.fadd.v8f64(double %arg, <8 x double> undef)
+; SSE41-NEXT:  Cost Model: Found an estimated cost of 40 for instruction: %V16 = call double @llvm.vector.reduce.fadd.v16f64(double %arg, <16 x double> undef)
 ; SSE41-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret void
 ;
 ; SSE42-LABEL: 'reduce_f64'
-; SSE42-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %V1 = call double @llvm.vector.reduce.fadd.v1f64(double %arg, <1 x double> undef)
-; SSE42-NEXT:  Cost Model: Found an estimated cost of 9 for instruction: %V2 = call double @llvm.vector.reduce.fadd.v2f64(double %arg, <2 x double> undef)
-; SSE42-NEXT:  Cost Model: Found an estimated cost of 18 for instruction: %V4 = call double @llvm.vector.reduce.fadd.v4f64(double %arg, <4 x double> undef)
-; SSE42-NEXT:  Cost Model: Found an estimated cost of 36 for instruction: %V8 = call double @llvm.vector.reduce.fadd.v8f64(double %arg, <8 x double> undef)
-; SSE42-NEXT:  Cost Model: Found an estimated cost of 72 for instruction: %V16 = call double @llvm.vector.reduce.fadd.v16f64(double %arg, <16 x double> undef)
+; SSE42-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %V1 = call double @llvm.vector.reduce.fadd.v1f64(double %arg, <1 x double> undef)
+; SSE42-NEXT:  Cost Model: Found an estimated cost of 3 for instruction: %V2 = call double @llvm.vector.reduce.fadd.v2f64(double %arg, <2 x double> undef)
+; SSE42-NEXT:  Cost Model: Found an estimated cost of 6 for instruction: %V4 = call double @llvm.vector.reduce.fadd.v4f64(double %arg, <4 x double> undef)
+; SSE42-NEXT:  Cost Model: Found an estimated cost of 12 for instruction: %V8 = call double @llvm.vector.reduce.fadd.v8f64(double %arg, <8 x double> undef)
+; SSE42-NEXT:  Cost Model: Found an estimated cost of 24 for instruction: %V16 = call double @llvm.vector.reduce.fadd.v16f64(double %arg, <16 x double> undef)
 ; SSE42-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret void
 ;
 ; AVX1-LABEL: 'reduce_f64'
-; AVX1-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %V1 = call double @llvm.vector.reduce.fadd.v1f64(double %arg, <1 x double> undef)
-; AVX1-NEXT:  Cost Model: Found an estimated cost of 9 for instruction: %V2 = call double @llvm.vector.reduce.fadd.v2f64(double %arg, <2 x double> undef)
-; AVX1-NEXT:  Cost Model: Found an estimated cost of 20 for instruction: %V4 = call double @llvm.vector.reduce.fadd.v4f64(double %arg, <4 x double> undef)
-; AVX1-NEXT:  Cost Model: Found an estimated cost of 40 for instruction: %V8 = call double @llvm.vector.reduce.fadd.v8f64(double %arg, <8 x double> undef)
-; AVX1-NEXT:  Cost Model: Found an estimated cost of 80 for instruction: %V16 = call double @llvm.vector.reduce.fadd.v16f64(double %arg, <16 x double> undef)
+; AVX1-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %V1 = call double @llvm.vector.reduce.fadd.v1f64(double %arg, <1 x double> undef)
+; AVX1-NEXT:  Cost Model: Found an estimated cost of 3 for instruction: %V2 = call double @llvm.vector.reduce.fadd.v2f64(double %arg, <2 x double> undef)
+; AVX1-NEXT:  Cost Model: Found an estimated cost of 8 for instruction: %V4 = call double @llvm.vector.reduce.fadd.v4f64(double %arg, <4 x double> undef)
+; AVX1-NEXT:  Cost Model: Found an estimated cost of 16 for instruction: %V8 = call double @llvm.vector.reduce.fadd.v8f64(double %arg, <8 x double> undef)
+; AVX1-NEXT:  Cost Model: Found an estimated cost of 32 for instruction: %V16 = call double @llvm.vector.reduce.fadd.v16f64(double %arg, <16 x double> undef)
 ; AVX1-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret void
 ;
 ; AVX2-LABEL: 'reduce_f64'
-; AVX2-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %V1 = call double @llvm.vector.reduce.fadd.v1f64(double %arg, <1 x double> undef)
-; AVX2-NEXT:  Cost Model: Found an estimated cost of 9 for instruction: %V2 = call double @llvm.vector.reduce.fadd.v2f64(double %arg, <2 x double> undef)
-; AVX2-NEXT:  Cost Model: Found an estimated cost of 20 for instruction: %V4 = call double @llvm.vector.reduce.fadd.v4f64(double %arg, <4 x double> undef)
-; AVX2-NEXT:  Cost Model: Found an estimated cost of 40 for instruction: %V8 = call double @llvm.vector.reduce.fadd.v8f64(double %arg, <8 x double> undef)
-; AVX2-NEXT:  Cost Model: Found an estimated cost of 80 for instruction: %V16 = call double @llvm.vector.reduce.fadd.v16f64(double %arg, <16 x double> undef)
+; AVX2-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %V1 = call double @llvm.vector.reduce.fadd.v1f64(double %arg, <1 x double> undef)
+; AVX2-NEXT:  Cost Model: Found an estimated cost of 3 for instruction: %V2 = call double @llvm.vector.reduce.fadd.v2f64(double %arg, <2 x double> undef)
+; AVX2-NEXT:  Cost Model: Found an estimated cost of 8 for instruction: %V4 = call double @llvm.vector.reduce.fadd.v4f64(double %arg, <4 x double> undef)
+; AVX2-NEXT:  Cost Model: Found an estimated cost of 16 for instruction: %V8 = call double @llvm.vector.reduce.fadd.v8f64(double %arg, <8 x double> undef)
+; AVX2-NEXT:  Cost Model: Found an estimated cost of 32 for instruction: %V16 = call double @llvm.vector.reduce.fadd.v16f64(double %arg, <16 x double> undef)
 ; AVX2-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret void
 ;
 ; AVX512-LABEL: 'reduce_f64'
-; AVX512-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %V1 = call double @llvm.vector.reduce.fadd.v1f64(double %arg, <1 x double> undef)
-; AVX512-NEXT:  Cost Model: Found an estimated cost of 9 for instruction: %V2 = call double @llvm.vector.reduce.fadd.v2f64(double %arg, <2 x double> undef)
-; AVX512-NEXT:  Cost Model: Found an estimated cost of 20 for instruction: %V4 = call double @llvm.vector.reduce.fadd.v4f64(double %arg, <4 x double> undef)
-; AVX512-NEXT:  Cost Model: Found an estimated cost of 42 for instruction: %V8 = call double @llvm.vector.reduce.fadd.v8f64(double %arg, <8 x double> undef)
-; AVX512-NEXT:  Cost Model: Found an estimated cost of 84 for instruction: %V16 = call double @llvm.vector.reduce.fadd.v16f64(double %arg, <16 x double> undef)
+; AVX512-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %V1 = call double @llvm.vector.reduce.fadd.v1f64(double %arg, <1 x double> undef)
+; AVX512-NEXT:  Cost Model: Found an estimated cost of 3 for instruction: %V2 = call double @llvm.vector.reduce.fadd.v2f64(double %arg, <2 x double> undef)
+; AVX512-NEXT:  Cost Model: Found an estimated cost of 8 for instruction: %V4 = call double @llvm.vector.reduce.fadd.v4f64(double %arg, <4 x double> undef)
+; AVX512-NEXT:  Cost Model: Found an estimated cost of 18 for instruction: %V8 = call double @llvm.vector.reduce.fadd.v8f64(double %arg, <8 x double> undef)
+; AVX512-NEXT:  Cost Model: Found an estimated cost of 36 for instruction: %V16 = call double @llvm.vector.reduce.fadd.v16f64(double %arg, <16 x double> undef)
 ; AVX512-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret void
 ;
   %V1  = call double @llvm.vector.reduce.fadd.v1f64(double %arg, <1 x double> undef)
   %V2  = call double @llvm.vector.reduce.fadd.v2f64(double %arg, <2 x double> undef)
   %V4  = call double @llvm.vector.reduce.fadd.v4f64(double %arg, <4 x double> undef)
   %V8  = call double @llvm.vector.reduce.fadd.v8f64(double %arg, <8 x double> undef)
   %V16 = call double @llvm.vector.reduce.fadd.v16f64(double %arg, <16 x double> undef)
   ret void
 }
 
 define void @reduce_f32(float %arg) {
 ; SSE2-LABEL: 'reduce_f32'
-; SSE2-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %V1 = call float @llvm.vector.reduce.fadd.v1f32(float %arg, <1 x float> undef)
-; SSE2-NEXT:  Cost Model: Found an estimated cost of 9 for instruction: %V2 = call float @llvm.vector.reduce.fadd.v2f32(float %arg, <2 x float> undef)
-; SSE2-NEXT:  Cost Model: Found an estimated cost of 19 for instruction: %V4 = call float @llvm.vector.reduce.fadd.v4f32(float %arg, <4 x float> undef)
-; SSE2-NEXT:  Cost Model: Found an estimated cost of 38 for instruction: %V8 = call float @llvm.vector.reduce.fadd.v8f32(float %arg, <8 x float> undef)
-; SSE2-NEXT:  Cost Model: Found an estimated cost of 76 for instruction: %V16 = call float @llvm.vector.reduce.fadd.v16f32(float %arg, <16 x float> undef)
-; SSE2-NEXT:  Cost Model: Found an estimated cost of 152 for instruction: %V32 = call float @llvm.vector.reduce.fadd.v32f32(float %arg, <32 x float> undef)
+; SSE2-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %V1 = call float @llvm.vector.reduce.fadd.v1f32(float %arg, <1 x float> undef)
+; SSE2-NEXT:  Cost Model: Found an estimated cost of 5 for instruction: %V2 = call float @llvm.vector.reduce.fadd.v2f32(float %arg, <2 x float> undef)
+; SSE2-NEXT:  Cost Model: Found an estimated cost of 11 for instruction: %V4 = call float @llvm.vector.reduce.fadd.v4f32(float %arg, <4 x float> undef)
+; SSE2-NEXT:  Cost Model: Found an estimated cost of 22 for instruction: %V8 = call float @llvm.vector.reduce.fadd.v8f32(float %arg, <8 x float> undef)
+; SSE2-NEXT:  Cost Model: Found an estimated cost of 44 for instruction: %V16 = call float @llvm.vector.reduce.fadd.v16f32(float %arg, <16 x float> undef)
+; SSE2-NEXT:  Cost Model: Found an estimated cost of 88 for instruction: %V32 = call float @llvm.vector.reduce.fadd.v32f32(float %arg, <32 x float> undef)
 ; SSE2-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret void
 ;
 ; SSSE3-LABEL: 'reduce_f32'
-; SSSE3-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %V1 = call float @llvm.vector.reduce.fadd.v1f32(float %arg, <1 x float> undef)
-; SSSE3-NEXT:  Cost Model: Found an estimated cost of 9 for instruction: %V2 = call float @llvm.vector.reduce.fadd.v2f32(float %arg, <2 x float> undef)
-; SSSE3-NEXT:  Cost Model: Found an estimated cost of 19 for instruction: %V4 = call float @llvm.vector.reduce.fadd.v4f32(float %arg, <4 x float> undef)
-; SSSE3-NEXT:  Cost Model: Found an estimated cost of 38 for instruction: %V8 = call float @llvm.vector.reduce.fadd.v8f32(float %arg, <8 x float> undef)
-; SSSE3-NEXT:  Cost Model: Found an estimated cost of 76 for instruction: %V16 = call float @llvm.vector.reduce.fadd.v16f32(float %arg, <16 x float> undef)
-; SSSE3-NEXT:  Cost Model: Found an estimated cost of 152 for instruction: %V32 = call float @llvm.vector.reduce.fadd.v32f32(float %arg, <32 x float> undef)
+; SSSE3-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %V1 = call float @llvm.vector.reduce.fadd.v1f32(float %arg, <1 x float> undef)
+; SSSE3-NEXT:  Cost Model: Found an estimated cost of 5 for instruction: %V2 = call float @llvm.vector.reduce.fadd.v2f32(float %arg, <2 x float> undef)
+; SSSE3-NEXT:  Cost Model: Found an estimated cost of 11 for instruction: %V4 = call float @llvm.vector.reduce.fadd.v4f32(float %arg, <4 x float> undef)
+; SSSE3-NEXT:  Cost Model: Found an estimated cost of 22 for instruction: %V8 = call float @llvm.vector.reduce.fadd.v8f32(float %arg, <8 x float> undef)
+; SSSE3-NEXT:  Cost Model: Found an estimated cost of 44 for instruction: %V16 = call float @llvm.vector.reduce.fadd.v16f32(float %arg, <16 x float> undef)
+; SSSE3-NEXT:  Cost Model: Found an estimated cost of 88 for instruction: %V32 = call float @llvm.vector.reduce.fadd.v32f32(float %arg, <32 x float> undef)
 ; SSSE3-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret void
 ;
 ; SSE41-LABEL: 'reduce_f32'
-; SSE41-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %V1 = call float @llvm.vector.reduce.fadd.v1f32(float %arg, <1 x float> undef)
-; SSE41-NEXT:  Cost Model: Found an estimated cost of 9 for instruction: %V2 = call float @llvm.vector.reduce.fadd.v2f32(float %arg, <2 x float> undef)
-; SSE41-NEXT:  Cost Model: Found an estimated cost of 19 for instruction: %V4 = call float @llvm.vector.reduce.fadd.v4f32(float %arg, <4 x float> undef)
-; SSE41-NEXT:  Cost Model: Found an estimated cost of 38 for instruction: %V8 = call float @llvm.vector.reduce.fadd.v8f32(float %arg, <8 x float> undef)
-; SSE41-NEXT:  Cost Model: Found an estimated cost of 76 for instruction: %V16 = call float @llvm.vector.reduce.fadd.v16f32(float %arg, <16 x float> undef)
-; SSE41-NEXT:  Cost Model: Found an estimated cost of 152 for instruction: %V32 = call float @llvm.vector.reduce.fadd.v32f32(float %arg, <32 x float> undef)
+; SSE41-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %V1 = call float @llvm.vector.reduce.fadd.v1f32(float %arg, <1 x float> undef)
+; SSE41-NEXT:  Cost Model: Found an estimated cost of 5 for instruction: %V2 = call float @llvm.vector.reduce.fadd.v2f32(float %arg, <2 x float> undef)
+; SSE41-NEXT:  Cost Model: Found an estimated cost of 11 for instruction: %V4 = call float @llvm.vector.reduce.fadd.v4f32(float %arg, <4 x float> undef)
+; SSE41-NEXT:  Cost Model: Found an estimated cost of 22 for instruction: %V8 = call float @llvm.vector.reduce.fadd.v8f32(float %arg, <8 x float> undef)
+; SSE41-NEXT:  Cost Model: Found an estimated cost of 44 for instruction: %V16 = call float @llvm.vector.reduce.fadd.v16f32(float %arg, <16 x float> undef)
+; SSE41-NEXT:  Cost Model: Found an estimated cost of 88 for instruction: %V32 = call float @llvm.vector.reduce.fadd.v32f32(float %arg, <32 x float> undef)
 ; SSE41-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret void
 ;
 ; SSE42-LABEL: 'reduce_f32'
-; SSE42-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %V1 = call float @llvm.vector.reduce.fadd.v1f32(float %arg, <1 x float> undef)
-; SSE42-NEXT:  Cost Model: Found an estimated cost of 9 for instruction: %V2 = call float @llvm.vector.reduce.fadd.v2f32(float %arg, <2 x float> undef)
-; SSE42-NEXT:  Cost Model: Found an estimated cost of 19 for instruction: %V4 = call float @llvm.vector.reduce.fadd.v4f32(float %arg, <4 x float> undef)
-; SSE42-NEXT:  Cost Model: Found an estimated cost of 38 for instruction: %V8 = call float @llvm.vector.reduce.fadd.v8f32(float %arg, <8 x float> undef)
-; SSE42-NEXT:  Cost Model: Found an estimated cost of 76 for instruction: %V16 = call float @llvm.vector.reduce.fadd.v16f32(float %arg, <16 x float> undef)
-; SSE42-NEXT:  Cost Model: Found an estimated cost of 152 for instruction: %V32 = call float @llvm.vector.reduce.fadd.v32f32(float %arg, <32 x float> undef)
+; SSE42-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %V1 = call float @llvm.vector.reduce.fadd.v1f32(float %arg, <1 x float> undef)
+; SSE42-NEXT:  Cost Model: Found an estimated cost of 3 for instruction: %V2 = call float @llvm.vector.reduce.fadd.v2f32(float %arg, <2 x float> undef)
+; SSE42-NEXT:  Cost Model: Found an estimated cost of 7 for instruction: %V4 = call float @llvm.vector.reduce.fadd.v4f32(float %arg, <4 x float> undef)
+; SSE42-NEXT:  Cost Model: Found an estimated cost of 14 for instruction: %V8 = call float @llvm.vector.reduce.fadd.v8f32(float %arg, <8 x float> undef)
+; SSE42-NEXT:  Cost Model: Found an estimated cost of 28 for instruction: %V16 = call float @llvm.vector.reduce.fadd.v16f32(float %arg, <16 x float> undef)
+; SSE42-NEXT:  Cost Model: Found an estimated cost of 56 for instruction: %V32 = call float @llvm.vector.reduce.fadd.v32f32(float %arg, <32 x float> undef)
 ; SSE42-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret void
 ;
 ; AVX1-LABEL: 'reduce_f32'
-; AVX1-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %V1 = call float @llvm.vector.reduce.fadd.v1f32(float %arg, <1 x float> undef)
-; AVX1-NEXT:  Cost Model: Found an estimated cost of 9 for instruction: %V2 = call float @llvm.vector.reduce.fadd.v2f32(float %arg, <2 x float> undef)
-; AVX1-NEXT:  Cost Model: Found an estimated cost of 19 for instruction: %V4 = call float @llvm.vector.reduce.fadd.v4f32(float %arg, <4 x float> undef)
-; AVX1-NEXT:  Cost Model: Found an estimated cost of 42 for instruction: %V8 = call float @llvm.vector.reduce.fadd.v8f32(float %arg, <8 x float> undef)
-; AVX1-NEXT:  Cost Model: Found an estimated cost of 84 for instruction: %V16 = call float @llvm.vector.reduce.fadd.v16f32(float %arg, <16 x float> undef)
-; AVX1-NEXT:  Cost Model: Found an estimated cost of 168 for instruction: %V32 = call float @llvm.vector.reduce.fadd.v32f32(float %arg, <32 x float> undef)
+; AVX1-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %V1 = call float @llvm.vector.reduce.fadd.v1f32(float %arg, <1 x float> undef)
+; AVX1-NEXT:  Cost Model: Found an estimated cost of 3 for instruction: %V2 = call float @llvm.vector.reduce.fadd.v2f32(float %arg, <2 x float> undef)
+; AVX1-NEXT:  Cost Model: Found an estimated cost of 7 for instruction: %V4 = call float @llvm.vector.reduce.fadd.v4f32(float %arg, <4 x float> undef)
+; AVX1-NEXT:  Cost Model: Found an estimated cost of 18 for instruction: %V8 = call float @llvm.vector.reduce.fadd.v8f32(float %arg, <8 x float> undef)
+; AVX1-NEXT:  Cost Model: Found an estimated cost of 36 for instruction: %V16 = call float @llvm.vector.reduce.fadd.v16f32(float %arg, <16 x float> undef)
+; AVX1-NEXT:  Cost Model: Found an estimated cost of 72 for instruction: %V32 = call float @llvm.vector.reduce.fadd.v32f32(float %arg, <32 x float> undef)
 ; AVX1-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret void
 ;
 ; AVX2-LABEL: 'reduce_f32'
-; AVX2-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %V1 = call float @llvm.vector.reduce.fadd.v1f32(float %arg, <1 x float> undef)
-; AVX2-NEXT:  Cost Model: Found an estimated cost of 9 for instruction: %V2 = call float @llvm.vector.reduce.fadd.v2f32(float %arg, <2 x float> undef)
-; AVX2-NEXT:  Cost Model: Found an estimated cost of 19 for instruction: %V4 = call float @llvm.vector.reduce.fadd.v4f32(float %arg, <4 x float> undef)
-; AVX2-NEXT:  Cost Model: Found an estimated cost of 42 for instruction: %V8 = call float @llvm.vector.reduce.fadd.v8f32(float %arg, <8 x float> undef)
-; AVX2-NEXT:  Cost Model: Found an estimated cost of 84 for instruction: %V16 = call float @llvm.vector.reduce.fadd.v16f32(float %arg, <16 x float> undef)
-; AVX2-NEXT:  Cost Model: Found an estimated cost of 168 for instruction: %V32 = call float @llvm.vector.reduce.fadd.v32f32(float %arg, <32 x float> undef)
+; AVX2-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %V1 = call float @llvm.vector.reduce.fadd.v1f32(float %arg, <1 x float> undef)
+; AVX2-NEXT:  Cost Model: Found an estimated cost of 3 for instruction: %V2 = call float @llvm.vector.reduce.fadd.v2f32(float %arg, <2 x float> undef)
+; AVX2-NEXT:  Cost Model: Found an estimated cost of 7 for instruction: %V4 = call float @llvm.vector.reduce.fadd.v4f32(float %arg, <4 x float> undef)
+; AVX2-NEXT:  Cost Model: Found an estimated cost of 18 for instruction: %V8 = call float @llvm.vector.reduce.fadd.v8f32(float %arg, <8 x float> undef)
+; AVX2-NEXT:  Cost Model: Found an estimated cost of 36 for instruction: %V16 = call float @llvm.vector.reduce.fadd.v16f32(float %arg, <16 x float> undef)
+; AVX2-NEXT:  Cost Model: Found an estimated cost of 72 for instruction: %V32 = call float @llvm.vector.reduce.fadd.v32f32(float %arg, <32 x float> undef)
 ; AVX2-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret void
 ;
 ; AVX512-LABEL: 'reduce_f32'
-; AVX512-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %V1 = call float @llvm.vector.reduce.fadd.v1f32(float %arg, <1 x float> undef)
-; AVX512-NEXT:  Cost Model: Found an estimated cost of 9 for instruction: %V2 = call float @llvm.vector.reduce.fadd.v2f32(float %arg, <2 x float> undef)
-; AVX512-NEXT:  Cost Model: Found an estimated cost of 19 for instruction: %V4 = call float @llvm.vector.reduce.fadd.v4f32(float %arg, <4 x float> undef)
-; AVX512-NEXT:  Cost Model: Found an estimated cost of 42 for instruction: %V8 = call float @llvm.vector.reduce.fadd.v8f32(float %arg, <8 x float> undef)
-; AVX512-NEXT:  Cost Model: Found an estimated cost of 88 for instruction: %V16 = call float @llvm.vector.reduce.fadd.v16f32(float %arg, <16 x float> undef)
-; AVX512-NEXT:  Cost Model: Found an estimated cost of 176 for instruction: %V32 = call float @llvm.vector.reduce.fadd.v32f32(float %arg, <32 x float> undef)
+; AVX512-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %V1 = call float @llvm.vector.reduce.fadd.v1f32(float %arg, <1 x float> undef)
+; AVX512-NEXT:  Cost Model: Found an estimated cost of 3 for instruction: %V2 = call float @llvm.vector.reduce.fadd.v2f32(float %arg, <2 x float> undef)
+; AVX512-NEXT:  Cost Model: Found an estimated cost of 7 for instruction: %V4 = call float @llvm.vector.reduce.fadd.v4f32(float %arg, <4 x float> undef)
+; AVX512-NEXT:  Cost Model: Found an estimated cost of 18 for instruction: %V8 = call float @llvm.vector.reduce.fadd.v8f32(float %arg, <8 x float> undef)
+; AVX512-NEXT:  Cost Model: Found an estimated cost of 40 for instruction: %V16 = call float @llvm.vector.reduce.fadd.v16f32(float %arg, <16 x float> undef)
+; AVX512-NEXT:  Cost Model: Found an estimated cost of 80 for instruction: %V32 = call float @llvm.vector.reduce.fadd.v32f32(float %arg, <32 x float> undef)
 ; AVX512-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret void
 ;
   %V1  = call float @llvm.vector.reduce.fadd.v1f32(float %arg, <1 x float> undef)
   %V2  = call float @llvm.vector.reduce.fadd.v2f32(float %arg, <2 x float> undef)
   %V4  = call float @llvm.vector.reduce.fadd.v4f32(float %arg, <4 x float> undef)
   %V8  = call float @llvm.vector.reduce.fadd.v8f32(float %arg, <8 x float> undef)
   %V16 = call float @llvm.vector.reduce.fadd.v16f32(float %arg, <16 x float> undef)
   %V32 = call float @llvm.vector.reduce.fadd.v32f32(float %arg, <32 x float> undef)

llvm/test/Analysis/CostModel/X86/reduce-fmul.ll

 ; SSE41-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %V1 = call double @llvm.vector.reduce.fmul.v1f64(double %arg, <1 x double> undef)
 ; SSE41-NEXT:  Cost Model: Found an estimated cost of 5 for instruction: %V2 = call double @llvm.vector.reduce.fmul.v2f64(double %arg, <2 x double> undef)
 ; SSE41-NEXT:  Cost Model: Found an estimated cost of 10 for instruction: %V4 = call double @llvm.vector.reduce.fmul.v4f64(double %arg, <4 x double> undef)
 ; SSE41-NEXT:  Cost Model: Found an estimated cost of 20 for instruction: %V8 = call double @llvm.vector.reduce.fmul.v8f64(double %arg, <8 x double> undef)
 ; SSE41-NEXT:  Cost Model: Found an estimated cost of 40 for instruction: %V16 = call double @llvm.vector.reduce.fmul.v16f64(double %arg, <16 x double> undef)
 ; SSE41-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret void
 ;
 ; SSE42-LABEL: 'reduce_f64'
-; SSE42-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %V1 = call double @llvm.vector.reduce.fmul.v1f64(double %arg, <1 x double> undef)
-; SSE42-NEXT:  Cost Model: Found an estimated cost of 5 for instruction: %V2 = call double @llvm.vector.reduce.fmul.v2f64(double %arg, <2 x double> undef)
-; SSE42-NEXT:  Cost Model: Found an estimated cost of 10 for instruction: %V4 = call double @llvm.vector.reduce.fmul.v4f64(double %arg, <4 x double> undef)
-; SSE42-NEXT:  Cost Model: Found an estimated cost of 20 for instruction: %V8 = call double @llvm.vector.reduce.fmul.v8f64(double %arg, <8 x double> undef)
-; SSE42-NEXT:  Cost Model: Found an estimated cost of 40 for instruction: %V16 = call double @llvm.vector.reduce.fmul.v16f64(double %arg, <16 x double> undef)
+; SSE42-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %V1 = call double @llvm.vector.reduce.fmul.v1f64(double %arg, <1 x double> undef)
+; SSE42-NEXT:  Cost Model: Found an estimated cost of 3 for instruction: %V2 = call double @llvm.vector.reduce.fmul.v2f64(double %arg, <2 x double> undef)
+; SSE42-NEXT:  Cost Model: Found an estimated cost of 6 for instruction: %V4 = call double @llvm.vector.reduce.fmul.v4f64(double %arg, <4 x double> undef)
+; SSE42-NEXT:  Cost Model: Found an estimated cost of 12 for instruction: %V8 = call double @llvm.vector.reduce.fmul.v8f64(double %arg, <8 x double> undef)
+; SSE42-NEXT:  Cost Model: Found an estimated cost of 24 for instruction: %V16 = call double @llvm.vector.reduce.fmul.v16f64(double %arg, <16 x double> undef)
 ; SSE42-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret void
 ;
 ; AVX1-LABEL: 'reduce_f64'
 ; AVX1-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %V1 = call double @llvm.vector.reduce.fmul.v1f64(double %arg, <1 x double> undef)
 ; AVX1-NEXT:  Cost Model: Found an estimated cost of 5 for instruction: %V2 = call double @llvm.vector.reduce.fmul.v2f64(double %arg, <2 x double> undef)
 ; AVX1-NEXT:  Cost Model: Found an estimated cost of 12 for instruction: %V4 = call double @llvm.vector.reduce.fmul.v4f64(double %arg, <4 x double> undef)
 ; AVX1-NEXT:  Cost Model: Found an estimated cost of 24 for instruction: %V8 = call double @llvm.vector.reduce.fmul.v8f64(double %arg, <8 x double> undef)
 ; AVX1-NEXT:  Cost Model: Found an estimated cost of 48 for instruction: %V16 = call double @llvm.vector.reduce.fmul.v16f64(double %arg, <16 x double> undef)
 ; AVX1-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret void
 ;
 ; AVX2-LABEL: 'reduce_f64'
-; AVX2-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %V1 = call double @llvm.vector.reduce.fmul.v1f64(double %arg, <1 x double> undef)
-; AVX2-NEXT:  Cost Model: Found an estimated cost of 5 for instruction: %V2 = call double @llvm.vector.reduce.fmul.v2f64(double %arg, <2 x double> undef)
-; AVX2-NEXT:  Cost Model: Found an estimated cost of 12 for instruction: %V4 = call double @llvm.vector.reduce.fmul.v4f64(double %arg, <4 x double> undef)
-; AVX2-NEXT:  Cost Model: Found an estimated cost of 24 for instruction: %V8 = call double @llvm.vector.reduce.fmul.v8f64(double %arg, <8 x double> undef)
-; AVX2-NEXT:  Cost Model: Found an estimated cost of 48 for instruction: %V16 = call double @llvm.vector.reduce.fmul.v16f64(double %arg, <16 x double> undef)
+; AVX2-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %V1 = call double @llvm.vector.reduce.fmul.v1f64(double %arg, <1 x double> undef)
+; AVX2-NEXT:  Cost Model: Found an estimated cost of 3 for instruction: %V2 = call double @llvm.vector.reduce.fmul.v2f64(double %arg, <2 x double> undef)
+; AVX2-NEXT:  Cost Model: Found an estimated cost of 8 for instruction: %V4 = call double @llvm.vector.reduce.fmul.v4f64(double %arg, <4 x double> undef)
+; AVX2-NEXT:  Cost Model: Found an estimated cost of 16 for instruction: %V8 = call double @llvm.vector.reduce.fmul.v8f64(double %arg, <8 x double> undef)
+; AVX2-NEXT:  Cost Model: Found an estimated cost of 32 for instruction: %V16 = call double @llvm.vector.reduce.fmul.v16f64(double %arg, <16 x double> undef)
 ; AVX2-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret void
 ;
 ; AVX512-LABEL: 'reduce_f64'
-; AVX512-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %V1 = call double @llvm.vector.reduce.fmul.v1f64(double %arg, <1 x double> undef)
-; AVX512-NEXT:  Cost Model: Found an estimated cost of 5 for instruction: %V2 = call double @llvm.vector.reduce.fmul.v2f64(double %arg, <2 x double> undef)
-; AVX512-NEXT:  Cost Model: Found an estimated cost of 12 for instruction: %V4 = call double @llvm.vector.reduce.fmul.v4f64(double %arg, <4 x double> undef)
-; AVX512-NEXT:  Cost Model: Found an estimated cost of 26 for instruction: %V8 = call double @llvm.vector.reduce.fmul.v8f64(double %arg, <8 x double> undef)
-; AVX512-NEXT:  Cost Model: Found an estimated cost of 52 for instruction: %V16 = call double @llvm.vector.reduce.fmul.v16f64(double %arg, <16 x double> undef)
+; AVX512-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %V1 = call double @llvm.vector.reduce.fmul.v1f64(double %arg, <1 x double> undef)
+; AVX512-NEXT:  Cost Model: Found an estimated cost of 3 for instruction: %V2 = call double @llvm.vector.reduce.fmul.v2f64(double %arg, <2 x double> undef)
+; AVX512-NEXT:  Cost Model: Found an estimated cost of 8 for instruction: %V4 = call double @llvm.vector.reduce.fmul.v4f64(double %arg, <4 x double> undef)
+; AVX512-NEXT:  Cost Model: Found an estimated cost of 18 for instruction: %V8 = call double @llvm.vector.reduce.fmul.v8f64(double %arg, <8 x double> undef)
+; AVX512-NEXT:  Cost Model: Found an estimated cost of 36 for instruction: %V16 = call double @llvm.vector.reduce.fmul.v16f64(double %arg, <16 x double> undef)
 ; AVX512-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret void
 ;
   %V1  = call double @llvm.vector.reduce.fmul.v1f64(double %arg, <1 x double> undef)
   %V2  = call double @llvm.vector.reduce.fmul.v2f64(double %arg, <2 x double> undef)
   %V4  = call double @llvm.vector.reduce.fmul.v4f64(double %arg, <4 x double> undef)
   %V8  = call double @llvm.vector.reduce.fmul.v8f64(double %arg, <8 x double> undef)
   %V16 = call double @llvm.vector.reduce.fmul.v16f64(double %arg, <16 x double> undef)
   ret void

 ; SSE41-NEXT:  Cost Model: Found an estimated cost of 5 for instruction: %V2 = call float @llvm.vector.reduce.fmul.v2f32(float %arg, <2 x float> undef)
 ; SSE41-NEXT:  Cost Model: Found an estimated cost of 11 for instruction: %V4 = call float @llvm.vector.reduce.fmul.v4f32(float %arg, <4 x float> undef)
 ; SSE41-NEXT:  Cost Model: Found an estimated cost of 22 for instruction: %V8 = call float @llvm.vector.reduce.fmul.v8f32(float %arg, <8 x float> undef)
 ; SSE41-NEXT:  Cost Model: Found an estimated cost of 44 for instruction: %V16 = call float @llvm.vector.reduce.fmul.v16f32(float %arg, <16 x float> undef)
 ; SSE41-NEXT:  Cost Model: Found an estimated cost of 88 for instruction: %V32 = call float @llvm.vector.reduce.fmul.v32f32(float %arg, <32 x float> undef)
 ; SSE41-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret void
 ;
 ; SSE42-LABEL: 'reduce_f32'
-; SSE42-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %V1 = call float @llvm.vector.reduce.fmul.v1f32(float %arg, <1 x float> undef)
-; SSE42-NEXT:  Cost Model: Found an estimated cost of 5 for instruction: %V2 = call float @llvm.vector.reduce.fmul.v2f32(float %arg, <2 x float> undef)
-; SSE42-NEXT:  Cost Model: Found an estimated cost of 11 for instruction: %V4 = call float @llvm.vector.reduce.fmul.v4f32(float %arg, <4 x float> undef)
-; SSE42-NEXT:  Cost Model: Found an estimated cost of 22 for instruction: %V8 = call float @llvm.vector.reduce.fmul.v8f32(float %arg, <8 x float> undef)
-; SSE42-NEXT:  Cost Model: Found an estimated cost of 44 for instruction: %V16 = call float @llvm.vector.reduce.fmul.v16f32(float %arg, <16 x float> undef)
-; SSE42-NEXT:  Cost Model: Found an estimated cost of 88 for instruction: %V32 = call float @llvm.vector.reduce.fmul.v32f32(float %arg, <32 x float> undef)
+; SSE42-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %V1 = call float @llvm.vector.reduce.fmul.v1f32(float %arg, <1 x float> undef)
+; SSE42-NEXT:  Cost Model: Found an estimated cost of 3 for instruction: %V2 = call float @llvm.vector.reduce.fmul.v2f32(float %arg, <2 x float> undef)
+; SSE42-NEXT:  Cost Model: Found an estimated cost of 7 for instruction: %V4 = call float @llvm.vector.reduce.fmul.v4f32(float %arg, <4 x float> undef)
+; SSE42-NEXT:  Cost Model: Found an estimated cost of 14 for instruction: %V8 = call float @llvm.vector.reduce.fmul.v8f32(float %arg, <8 x float> undef)
+; SSE42-NEXT:  Cost Model: Found an estimated cost of 28 for instruction: %V16 = call float @llvm.vector.reduce.fmul.v16f32(float %arg, <16 x float> undef)
+; SSE42-NEXT:  Cost Model: Found an estimated cost of 56 for instruction: %V32 = call float @llvm.vector.reduce.fmul.v32f32(float %arg, <32 x float> undef)
 ; SSE42-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret void
 ;
 ; AVX1-LABEL: 'reduce_f32'
-; AVX1-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %V1 = call float @llvm.vector.reduce.fmul.v1f32(float %arg, <1 x float> undef)
-; AVX1-NEXT:  Cost Model: Found an estimated cost of 5 for instruction: %V2 = call float @llvm.vector.reduce.fmul.v2f32(float %arg, <2 x float> undef)
-; AVX1-NEXT:  Cost Model: Found an estimated cost of 11 for instruction: %V4 = call float @llvm.vector.reduce.fmul.v4f32(float %arg, <4 x float> undef)
-; AVX1-NEXT:  Cost Model: Found an estimated cost of 26 for instruction: %V8 = call float @llvm.vector.reduce.fmul.v8f32(float %arg, <8 x float> undef)
-; AVX1-NEXT:  Cost Model: Found an estimated cost of 52 for instruction: %V16 = call float @llvm.vector.reduce.fmul.v16f32(float %arg, <16 x float> undef)
-; AVX1-NEXT:  Cost Model: Found an estimated cost of 104 for instruction: %V32 = call float @llvm.vector.reduce.fmul.v32f32(float %arg, <32 x float> undef)
+; AVX1-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %V1 = call float @llvm.vector.reduce.fmul.v1f32(float %arg, <1 x float> undef)
+; AVX1-NEXT:  Cost Model: Found an estimated cost of 3 for instruction: %V2 = call float @llvm.vector.reduce.fmul.v2f32(float %arg, <2 x float> undef)
+; AVX1-NEXT:  Cost Model: Found an estimated cost of 7 for instruction: %V4 = call float @llvm.vector.reduce.fmul.v4f32(float %arg, <4 x float> undef)
+; AVX1-NEXT:  Cost Model: Found an estimated cost of 18 for instruction: %V8 = call float @llvm.vector.reduce.fmul.v8f32(float %arg, <8 x float> undef)
+; AVX1-NEXT:  Cost Model: Found an estimated cost of 36 for instruction: %V16 = call float @llvm.vector.reduce.fmul.v16f32(float %arg, <16 x float> undef)
+; AVX1-NEXT:  Cost Model: Found an estimated cost of 72 for instruction: %V32 = call float @llvm.vector.reduce.fmul.v32f32(float %arg, <32 x float> undef)
 ; AVX1-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret void
 ;
 ; AVX2-LABEL: 'reduce_f32'
-; AVX2-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %V1 = call float @llvm.vector.reduce.fmul.v1f32(float %arg, <1 x float> undef)
-; AVX2-NEXT:  Cost Model: Found an estimated cost of 5 for instruction: %V2 = call float @llvm.vector.reduce.fmul.v2f32(float %arg, <2 x float> undef)
-; AVX2-NEXT:  Cost Model: Found an estimated cost of 11 for instruction: %V4 = call float @llvm.vector.reduce.fmul.v4f32(float %arg, <4 x float> undef)
-; AVX2-NEXT:  Cost Model: Found an estimated cost of 26 for instruction: %V8 = call float @llvm.vector.reduce.fmul.v8f32(float %arg, <8 x float> undef)
-; AVX2-NEXT:  Cost Model: Found an estimated cost of 52 for instruction: %V16 = call float @llvm.vector.reduce.fmul.v16f32(float %arg, <16 x float> undef)
-; AVX2-NEXT:  Cost Model: Found an estimated cost of 104 for instruction: %V32 = call float @llvm.vector.reduce.fmul.v32f32(float %arg, <32 x float> undef)
+; AVX2-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %V1 = call float @llvm.vector.reduce.fmul.v1f32(float %arg, <1 x float> undef)
+; AVX2-NEXT:  Cost Model: Found an estimated cost of 3 for instruction: %V2 = call float @llvm.vector.reduce.fmul.v2f32(float %arg, <2 x float> undef)
+; AVX2-NEXT:  Cost Model: Found an estimated cost of 7 for instruction: %V4 = call float @llvm.vector.reduce.fmul.v4f32(float %arg, <4 x float> undef)
+; AVX2-NEXT:  Cost Model: Found an estimated cost of 18 for instruction: %V8 = call float @llvm.vector.reduce.fmul.v8f32(float %arg, <8 x float> undef)
+; AVX2-NEXT:  Cost Model: Found an estimated cost of 36 for instruction: %V16 = call float @llvm.vector.reduce.fmul.v16f32(float %arg, <16 x float> undef)
+; AVX2-NEXT:  Cost Model: Found an estimated cost of 72 for instruction: %V32 = call float @llvm.vector.reduce.fmul.v32f32(float %arg, <32 x float> undef)
 ; AVX2-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret void
 ;
 ; AVX512-LABEL: 'reduce_f32'
-; AVX512-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %V1 = call float @llvm.vector.reduce.fmul.v1f32(float %arg, <1 x float> undef)
-; AVX512-NEXT:  Cost Model: Found an estimated cost of 5 for instruction: %V2 = call float @llvm.vector.reduce.fmul.v2f32(float %arg, <2 x float> undef)
-; AVX512-NEXT:  Cost Model: Found an estimated cost of 11 for instruction: %V4 = call float @llvm.vector.reduce.fmul.v4f32(float %arg, <4 x float> undef)
-; AVX512-NEXT:  Cost Model: Found an estimated cost of 26 for instruction: %V8 = call float @llvm.vector.reduce.fmul.v8f32(float %arg, <8 x float> undef)
-; AVX512-NEXT:  Cost Model: Found an estimated cost of 56 for instruction: %V16 = call float @llvm.vector.reduce.fmul.v16f32(float %arg, <16 x float> undef)
-; AVX512-NEXT:  Cost Model: Found an estimated cost of 112 for instruction: %V32 = call float @llvm.vector.reduce.fmul.v32f32(float %arg, <32 x float> undef)
+; AVX512-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %V1 = call float @llvm.vector.reduce.fmul.v1f32(float %arg, <1 x float> undef)
+; AVX512-NEXT:  Cost Model: Found an estimated cost of 3 for instruction: %V2 = call float @llvm.vector.reduce.fmul.v2f32(float %arg, <2 x float> undef)
+; AVX512-NEXT:  Cost Model: Found an estimated cost of 7 for instruction: %V4 = call float @llvm.vector.reduce.fmul.v4f32(float %arg, <4 x float> undef)
+; AVX512-NEXT:  Cost Model: Found an estimated cost of 18 for instruction: %V8 = call float @llvm.vector.reduce.fmul.v8f32(float %arg, <8 x float> undef)
+; AVX512-NEXT:  Cost Model: Found an estimated cost of 40 for instruction: %V16 = call float @llvm.vector.reduce.fmul.v16f32(float %arg, <16 x float> undef)
+; AVX512-NEXT:  Cost Model: Found an estimated cost of 80 for instruction: %V32 = call float @llvm.vector.reduce.fmul.v32f32(float %arg, <32 x float> undef)
 ; AVX512-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret void
 ;
   %V1  = call float @llvm.vector.reduce.fmul.v1f32(float %arg, <1 x float> undef)
   %V2  = call float @llvm.vector.reduce.fmul.v2f32(float %arg, <2 x float> undef)
   %V4  = call float @llvm.vector.reduce.fmul.v4f32(float %arg, <4 x float> undef)
   %V8  = call float @llvm.vector.reduce.fmul.v8f32(float %arg, <8 x float> undef)
   %V16 = call float @llvm.vector.reduce.fmul.v16f32(float %arg, <16 x float> undef)
   %V32 = call float @llvm.vector.reduce.fmul.v32f32(float %arg, <32 x float> undef)