[llvm] [RISCV][CostModel] Estimate cost of llvm.vector.reduce.fmaximum/fminimum (PR #80697)
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Mon Feb 5 08:03:12 PST 2024
llvmbot wrote:
<!--LLVM PR SUMMARY COMMENT-->
@llvm/pr-subscribers-backend-risc-v
Author: Shih-Po Hung (arcbbb)
<details>
<summary>Changes</summary>
The ‘llvm.vector.reduce.fmaximum/fminimum.*’ intrinsics propagate NaNs. and if any element of the vector is a NaN, the result is NaN.
RVV handles this by continuously dividing the vector until only one remains.
This patch estimates the cost in each division, where LMUL may vary.
---
Full diff: https://github.com/llvm/llvm-project/pull/80697.diff
3 Files Affected:
- (modified) llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp (+33)
- (modified) llvm/test/Analysis/CostModel/RISCV/reduce-fmaximum.ll (+26-26)
- (modified) llvm/test/Analysis/CostModel/RISCV/reduce-fminimum.ll (+26-26)
``````````diff
diff --git a/llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp b/llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp
index d1db47a6061e4e..fe934a72ebcb04 100644
--- a/llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp
+++ b/llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp
@@ -969,6 +969,39 @@ RISCVTTIImpl::getMinMaxReductionCost(Intrinsic::ID IID, VectorType *Ty,
return getArithmeticReductionCost(Instruction::And, Ty, FMF, CostKind);
}
+ if (IID == Intrinsic::maximum || IID == Intrinsic::minimum) {
+ if (LT.second.isScalableVector())
+ return InstructionCost::getInvalid();
+ // Following TargetLowering::expandVecReduce
+ // Example sequences to reduce v8f32 into v4f32
+ // vsetivli zero, 4, e32, m2, ta, ma
+ // vslidedown.vi v12, v10, 4
+ // vsetivli zero, 4, e32, m1, ta, ma
+ // vmfeq.vv v0, v12, v12
+ // vmfeq.vv v8, v10, v10
+ // vmerge.vvm v9, v12, v10, v0
+ // vmv.v.v v0, v8
+ // vmerge.vvm v8, v10, v12, v0
+ // vfmin.vv v9, v9, v8
+ MVT SubTy = LT.second;
+ unsigned ReduceOp =
+ IID == Intrinsic::maximum ? RISCV::VFMAX_VV : RISCV::VFMIN_VV;
+ unsigned Opcodes[] = {RISCV::VSLIDEDOWN_VI,
+ RISCV::VMFEQ_VV,
+ RISCV::VMFEQ_VV,
+ RISCV::VMERGE_VVM,
+ RISCV::VMV1R_V,
+ RISCV::VMERGE_VVM,
+ ReduceOp};
+ InstructionCost SplitCost = 0;
+ while (SubTy.getVectorNumElements() > 1) {
+ SubTy = SubTy.getHalfNumVectorElementsVT();
+ SplitCost += getRISCVInstructionCost(Opcodes, SubTy, CostKind);
+ }
+ return LT.first * SplitCost +
+ getRISCVInstructionCost({RISCV::VFMV_F_S}, LT.second, CostKind);
+ }
+
// IR Reduction is composed by two vmv and one rvv reduction instruction.
InstructionCost BaseCost = 2;
diff --git a/llvm/test/Analysis/CostModel/RISCV/reduce-fmaximum.ll b/llvm/test/Analysis/CostModel/RISCV/reduce-fmaximum.ll
index 1618c3833a9722..ea7c2c38a82a73 100644
--- a/llvm/test/Analysis/CostModel/RISCV/reduce-fmaximum.ll
+++ b/llvm/test/Analysis/CostModel/RISCV/reduce-fmaximum.ll
@@ -6,23 +6,23 @@
define float @reduce_fmaximum_f32(float %arg) {
; CHECK-LABEL: 'reduce_fmaximum_f32'
-; CHECK-NEXT: Cost Model: Found an estimated cost of 3 for instruction: %V2 = call float @llvm.vector.reduce.fmaximum.v2f32(<2 x float> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 4 for instruction: %V4 = call float @llvm.vector.reduce.fmaximum.v4f32(<4 x float> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 5 for instruction: %V8 = call float @llvm.vector.reduce.fmaximum.v8f32(<8 x float> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 6 for instruction: %V16 = call float @llvm.vector.reduce.fmaximum.v16f32(<16 x float> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 7 for instruction: %V32 = call float @llvm.vector.reduce.fmaximum.v32f32(<32 x float> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 8 for instruction: %V64 = call float @llvm.vector.reduce.fmaximum.v64f32(<64 x float> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 10 for instruction: %V128 = call float @llvm.vector.reduce.fmaximum.v128f32(<128 x float> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 8 for instruction: %V2 = call float @llvm.vector.reduce.fmaximum.v2f32(<2 x float> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 15 for instruction: %V4 = call float @llvm.vector.reduce.fmaximum.v4f32(<4 x float> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 22 for instruction: %V8 = call float @llvm.vector.reduce.fmaximum.v8f32(<8 x float> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 29 for instruction: %V16 = call float @llvm.vector.reduce.fmaximum.v16f32(<16 x float> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 43 for instruction: %V32 = call float @llvm.vector.reduce.fmaximum.v32f32(<32 x float> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 71 for instruction: %V64 = call float @llvm.vector.reduce.fmaximum.v64f32(<64 x float> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 141 for instruction: %V128 = call float @llvm.vector.reduce.fmaximum.v128f32(<128 x float> undef)
; CHECK-NEXT: Cost Model: Found an estimated cost of 0 for instruction: ret float undef
;
; SIZE-LABEL: 'reduce_fmaximum_f32'
-; SIZE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %V2 = call float @llvm.vector.reduce.fmaximum.v2f32(<2 x float> undef)
-; SIZE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %V4 = call float @llvm.vector.reduce.fmaximum.v4f32(<4 x float> undef)
-; SIZE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %V8 = call float @llvm.vector.reduce.fmaximum.v8f32(<8 x float> undef)
-; SIZE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %V16 = call float @llvm.vector.reduce.fmaximum.v16f32(<16 x float> undef)
-; SIZE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %V32 = call float @llvm.vector.reduce.fmaximum.v32f32(<32 x float> undef)
-; SIZE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %V64 = call float @llvm.vector.reduce.fmaximum.v64f32(<64 x float> undef)
-; SIZE-NEXT: Cost Model: Found an estimated cost of 3 for instruction: %V128 = call float @llvm.vector.reduce.fmaximum.v128f32(<128 x float> undef)
+; SIZE-NEXT: Cost Model: Found an estimated cost of 8 for instruction: %V2 = call float @llvm.vector.reduce.fmaximum.v2f32(<2 x float> undef)
+; SIZE-NEXT: Cost Model: Found an estimated cost of 15 for instruction: %V4 = call float @llvm.vector.reduce.fmaximum.v4f32(<4 x float> undef)
+; SIZE-NEXT: Cost Model: Found an estimated cost of 22 for instruction: %V8 = call float @llvm.vector.reduce.fmaximum.v8f32(<8 x float> undef)
+; SIZE-NEXT: Cost Model: Found an estimated cost of 29 for instruction: %V16 = call float @llvm.vector.reduce.fmaximum.v16f32(<16 x float> undef)
+; SIZE-NEXT: Cost Model: Found an estimated cost of 36 for instruction: %V32 = call float @llvm.vector.reduce.fmaximum.v32f32(<32 x float> undef)
+; SIZE-NEXT: Cost Model: Found an estimated cost of 43 for instruction: %V64 = call float @llvm.vector.reduce.fmaximum.v64f32(<64 x float> undef)
+; SIZE-NEXT: Cost Model: Found an estimated cost of 85 for instruction: %V128 = call float @llvm.vector.reduce.fmaximum.v128f32(<128 x float> undef)
; SIZE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: ret float undef
;
%V2 = call float @llvm.vector.reduce.fmaximum.v2f32(<2 x float> undef)
@@ -44,21 +44,21 @@ declare float @llvm.vector.reduce.fmaximum.v128f32(<128 x float>)
define double @reduce_fmaximum_f64(double %arg) {
; CHECK-LABEL: 'reduce_fmaximum_f64'
-; CHECK-NEXT: Cost Model: Found an estimated cost of 3 for instruction: %V2 = call double @llvm.vector.reduce.fmaximum.v2f64(<2 x double> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 4 for instruction: %V4 = call double @llvm.vector.reduce.fmaximum.v4f64(<4 x double> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 5 for instruction: %V8 = call double @llvm.vector.reduce.fmaximum.v8f64(<8 x double> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 6 for instruction: %V16 = call double @llvm.vector.reduce.fmaximum.v16f64(<16 x double> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 7 for instruction: %V32 = call double @llvm.vector.reduce.fmaximum.v32f64(<32 x double> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 9 for instruction: %V64 = call double @llvm.vector.reduce.fmaximum.v64f64(<64 x double> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 8 for instruction: %V2 = call double @llvm.vector.reduce.fmaximum.v2f64(<2 x double> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 15 for instruction: %V4 = call double @llvm.vector.reduce.fmaximum.v4f64(<4 x double> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 22 for instruction: %V8 = call double @llvm.vector.reduce.fmaximum.v8f64(<8 x double> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 36 for instruction: %V16 = call double @llvm.vector.reduce.fmaximum.v16f64(<16 x double> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 64 for instruction: %V32 = call double @llvm.vector.reduce.fmaximum.v32f64(<32 x double> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 127 for instruction: %V64 = call double @llvm.vector.reduce.fmaximum.v64f64(<64 x double> undef)
; CHECK-NEXT: Cost Model: Found an estimated cost of 0 for instruction: ret double undef
;
; SIZE-LABEL: 'reduce_fmaximum_f64'
-; SIZE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %V2 = call double @llvm.vector.reduce.fmaximum.v2f64(<2 x double> undef)
-; SIZE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %V4 = call double @llvm.vector.reduce.fmaximum.v4f64(<4 x double> undef)
-; SIZE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %V8 = call double @llvm.vector.reduce.fmaximum.v8f64(<8 x double> undef)
-; SIZE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %V16 = call double @llvm.vector.reduce.fmaximum.v16f64(<16 x double> undef)
-; SIZE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %V32 = call double @llvm.vector.reduce.fmaximum.v32f64(<32 x double> undef)
-; SIZE-NEXT: Cost Model: Found an estimated cost of 3 for instruction: %V64 = call double @llvm.vector.reduce.fmaximum.v64f64(<64 x double> undef)
+; SIZE-NEXT: Cost Model: Found an estimated cost of 8 for instruction: %V2 = call double @llvm.vector.reduce.fmaximum.v2f64(<2 x double> undef)
+; SIZE-NEXT: Cost Model: Found an estimated cost of 15 for instruction: %V4 = call double @llvm.vector.reduce.fmaximum.v4f64(<4 x double> undef)
+; SIZE-NEXT: Cost Model: Found an estimated cost of 22 for instruction: %V8 = call double @llvm.vector.reduce.fmaximum.v8f64(<8 x double> undef)
+; SIZE-NEXT: Cost Model: Found an estimated cost of 29 for instruction: %V16 = call double @llvm.vector.reduce.fmaximum.v16f64(<16 x double> undef)
+; SIZE-NEXT: Cost Model: Found an estimated cost of 36 for instruction: %V32 = call double @llvm.vector.reduce.fmaximum.v32f64(<32 x double> undef)
+; SIZE-NEXT: Cost Model: Found an estimated cost of 71 for instruction: %V64 = call double @llvm.vector.reduce.fmaximum.v64f64(<64 x double> undef)
; SIZE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: ret double undef
;
%V2 = call double @llvm.vector.reduce.fmaximum.v2f64(<2 x double> undef)
diff --git a/llvm/test/Analysis/CostModel/RISCV/reduce-fminimum.ll b/llvm/test/Analysis/CostModel/RISCV/reduce-fminimum.ll
index 35b18645b1f2de..d74906c77cf9e9 100644
--- a/llvm/test/Analysis/CostModel/RISCV/reduce-fminimum.ll
+++ b/llvm/test/Analysis/CostModel/RISCV/reduce-fminimum.ll
@@ -6,23 +6,23 @@
define float @reduce_fmaximum_f32(float %arg) {
; CHECK-LABEL: 'reduce_fmaximum_f32'
-; CHECK-NEXT: Cost Model: Found an estimated cost of 3 for instruction: %V2 = call float @llvm.vector.reduce.fminimum.v2f32(<2 x float> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 4 for instruction: %V4 = call float @llvm.vector.reduce.fminimum.v4f32(<4 x float> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 5 for instruction: %V8 = call float @llvm.vector.reduce.fminimum.v8f32(<8 x float> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 6 for instruction: %V16 = call float @llvm.vector.reduce.fminimum.v16f32(<16 x float> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 7 for instruction: %V32 = call float @llvm.vector.reduce.fminimum.v32f32(<32 x float> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 8 for instruction: %V64 = call float @llvm.vector.reduce.fminimum.v64f32(<64 x float> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 10 for instruction: %V128 = call float @llvm.vector.reduce.fminimum.v128f32(<128 x float> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 8 for instruction: %V2 = call float @llvm.vector.reduce.fminimum.v2f32(<2 x float> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 15 for instruction: %V4 = call float @llvm.vector.reduce.fminimum.v4f32(<4 x float> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 22 for instruction: %V8 = call float @llvm.vector.reduce.fminimum.v8f32(<8 x float> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 29 for instruction: %V16 = call float @llvm.vector.reduce.fminimum.v16f32(<16 x float> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 43 for instruction: %V32 = call float @llvm.vector.reduce.fminimum.v32f32(<32 x float> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 71 for instruction: %V64 = call float @llvm.vector.reduce.fminimum.v64f32(<64 x float> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 141 for instruction: %V128 = call float @llvm.vector.reduce.fminimum.v128f32(<128 x float> undef)
; CHECK-NEXT: Cost Model: Found an estimated cost of 0 for instruction: ret float undef
;
; SIZE-LABEL: 'reduce_fmaximum_f32'
-; SIZE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %V2 = call float @llvm.vector.reduce.fminimum.v2f32(<2 x float> undef)
-; SIZE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %V4 = call float @llvm.vector.reduce.fminimum.v4f32(<4 x float> undef)
-; SIZE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %V8 = call float @llvm.vector.reduce.fminimum.v8f32(<8 x float> undef)
-; SIZE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %V16 = call float @llvm.vector.reduce.fminimum.v16f32(<16 x float> undef)
-; SIZE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %V32 = call float @llvm.vector.reduce.fminimum.v32f32(<32 x float> undef)
-; SIZE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %V64 = call float @llvm.vector.reduce.fminimum.v64f32(<64 x float> undef)
-; SIZE-NEXT: Cost Model: Found an estimated cost of 3 for instruction: %V128 = call float @llvm.vector.reduce.fminimum.v128f32(<128 x float> undef)
+; SIZE-NEXT: Cost Model: Found an estimated cost of 8 for instruction: %V2 = call float @llvm.vector.reduce.fminimum.v2f32(<2 x float> undef)
+; SIZE-NEXT: Cost Model: Found an estimated cost of 15 for instruction: %V4 = call float @llvm.vector.reduce.fminimum.v4f32(<4 x float> undef)
+; SIZE-NEXT: Cost Model: Found an estimated cost of 22 for instruction: %V8 = call float @llvm.vector.reduce.fminimum.v8f32(<8 x float> undef)
+; SIZE-NEXT: Cost Model: Found an estimated cost of 29 for instruction: %V16 = call float @llvm.vector.reduce.fminimum.v16f32(<16 x float> undef)
+; SIZE-NEXT: Cost Model: Found an estimated cost of 36 for instruction: %V32 = call float @llvm.vector.reduce.fminimum.v32f32(<32 x float> undef)
+; SIZE-NEXT: Cost Model: Found an estimated cost of 43 for instruction: %V64 = call float @llvm.vector.reduce.fminimum.v64f32(<64 x float> undef)
+; SIZE-NEXT: Cost Model: Found an estimated cost of 85 for instruction: %V128 = call float @llvm.vector.reduce.fminimum.v128f32(<128 x float> undef)
; SIZE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: ret float undef
;
%V2 = call float @llvm.vector.reduce.fminimum.v2f32(<2 x float> undef)
@@ -44,21 +44,21 @@ declare float @llvm.vector.reduce.fminimum.v128f32(<128 x float>)
define double @reduce_fmaximum_f64(double %arg) {
; CHECK-LABEL: 'reduce_fmaximum_f64'
-; CHECK-NEXT: Cost Model: Found an estimated cost of 3 for instruction: %V2 = call double @llvm.vector.reduce.fminimum.v2f64(<2 x double> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 4 for instruction: %V4 = call double @llvm.vector.reduce.fminimum.v4f64(<4 x double> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 5 for instruction: %V8 = call double @llvm.vector.reduce.fminimum.v8f64(<8 x double> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 6 for instruction: %V16 = call double @llvm.vector.reduce.fminimum.v16f64(<16 x double> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 7 for instruction: %V32 = call double @llvm.vector.reduce.fminimum.v32f64(<32 x double> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 9 for instruction: %V64 = call double @llvm.vector.reduce.fminimum.v64f64(<64 x double> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 8 for instruction: %V2 = call double @llvm.vector.reduce.fminimum.v2f64(<2 x double> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 15 for instruction: %V4 = call double @llvm.vector.reduce.fminimum.v4f64(<4 x double> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 22 for instruction: %V8 = call double @llvm.vector.reduce.fminimum.v8f64(<8 x double> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 36 for instruction: %V16 = call double @llvm.vector.reduce.fminimum.v16f64(<16 x double> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 64 for instruction: %V32 = call double @llvm.vector.reduce.fminimum.v32f64(<32 x double> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 127 for instruction: %V64 = call double @llvm.vector.reduce.fminimum.v64f64(<64 x double> undef)
; CHECK-NEXT: Cost Model: Found an estimated cost of 0 for instruction: ret double undef
;
; SIZE-LABEL: 'reduce_fmaximum_f64'
-; SIZE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %V2 = call double @llvm.vector.reduce.fminimum.v2f64(<2 x double> undef)
-; SIZE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %V4 = call double @llvm.vector.reduce.fminimum.v4f64(<4 x double> undef)
-; SIZE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %V8 = call double @llvm.vector.reduce.fminimum.v8f64(<8 x double> undef)
-; SIZE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %V16 = call double @llvm.vector.reduce.fminimum.v16f64(<16 x double> undef)
-; SIZE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %V32 = call double @llvm.vector.reduce.fminimum.v32f64(<32 x double> undef)
-; SIZE-NEXT: Cost Model: Found an estimated cost of 3 for instruction: %V64 = call double @llvm.vector.reduce.fminimum.v64f64(<64 x double> undef)
+; SIZE-NEXT: Cost Model: Found an estimated cost of 8 for instruction: %V2 = call double @llvm.vector.reduce.fminimum.v2f64(<2 x double> undef)
+; SIZE-NEXT: Cost Model: Found an estimated cost of 15 for instruction: %V4 = call double @llvm.vector.reduce.fminimum.v4f64(<4 x double> undef)
+; SIZE-NEXT: Cost Model: Found an estimated cost of 22 for instruction: %V8 = call double @llvm.vector.reduce.fminimum.v8f64(<8 x double> undef)
+; SIZE-NEXT: Cost Model: Found an estimated cost of 29 for instruction: %V16 = call double @llvm.vector.reduce.fminimum.v16f64(<16 x double> undef)
+; SIZE-NEXT: Cost Model: Found an estimated cost of 36 for instruction: %V32 = call double @llvm.vector.reduce.fminimum.v32f64(<32 x double> undef)
+; SIZE-NEXT: Cost Model: Found an estimated cost of 71 for instruction: %V64 = call double @llvm.vector.reduce.fminimum.v64f64(<64 x double> undef)
; SIZE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: ret double undef
;
%V2 = call double @llvm.vector.reduce.fminimum.v2f64(<2 x double> undef)
``````````
</details>
https://github.com/llvm/llvm-project/pull/80697
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