[llvm] [RISCV][TTI] Scale the cost of ArithmeticInstr with LMUL (PR #89170)

via llvm-commits llvm-commits at lists.llvm.org
Wed Apr 17 22:45:31 PDT 2024


llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->
@llvm/pr-subscribers-backend-risc-v

@llvm/pr-subscribers-llvm-analysis

Author: Shih-Po Hung (arcbbb)

<details>
<summary>Changes</summary>



---

Patch is 63.80 KiB, truncated to 20.00 KiB below, full version: https://github.com/llvm/llvm-project/pull/89170.diff


3 Files Affected:

- (modified) llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp (+36-9) 
- (modified) llvm/test/Analysis/CostModel/RISCV/arith-fp.ll (+27-27) 
- (modified) llvm/test/Analysis/CostModel/RISCV/arith-int.ll (+192-192) 


``````````diff
diff --git a/llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp b/llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp
index ce26e61880fd05..602dad20748590 100644
--- a/llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp
+++ b/llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp
@@ -1612,29 +1612,56 @@ InstructionCost RISCVTTIImpl::getArithmeticInstrCost(
   if (Op2Info.isConstant())
     ConstantMatCost += getConstantMatCost(1, Op2Info);
 
+  // Assuming instructions falling through the switch-cases have the same cost
+  // until a need arises to differentiate them.
+  unsigned Op;
   switch (TLI->InstructionOpcodeToISD(Opcode)) {
   case ISD::ADD:
   case ISD::SUB:
-  case ISD::AND:
-  case ISD::OR:
-  case ISD::XOR:
+    Op = RISCV::VADD_VV;
+    break;
   case ISD::SHL:
   case ISD::SRL:
   case ISD::SRA:
+    Op = RISCV::VSLL_VV;
+    break;
+  case ISD::AND:
+  case ISD::OR:
+  case ISD::XOR:
+    Op = (Ty->getScalarSizeInBits() == 1) ? RISCV::VMAND_MM : RISCV::VAND_VV;
+    break;
   case ISD::MUL:
   case ISD::MULHS:
   case ISD::MULHU:
+    Op = RISCV::VMUL_VV;
+    break;
+  case ISD::SDIV:
+  case ISD::UDIV:
+    Op = RISCV::VDIV_VV;
+    break;
+  case ISD::SREM:
+  case ISD::UREM:
+    Op = RISCV::VREM_VV;
+    break;
   case ISD::FADD:
   case ISD::FSUB:
   case ISD::FMUL:
-  case ISD::FNEG: {
-    return ConstantMatCost + TLI->getLMULCost(LT.second) * LT.first * 1;
-  }
+    // TODO: Address FP16 with VFHMIN
+    Op = RISCV::VFADD_VV;
+    break;
+  case ISD::FDIV:
+    Op = RISCV::VFDIV_VV;
+    break;
+  case ISD::FNEG:
+    Op = RISCV::VFSGNJN_VV;
+    break;
   default:
-    return ConstantMatCost +
-           BaseT::getArithmeticInstrCost(Opcode, Ty, CostKind, Op1Info, Op2Info,
-                                         Args, CxtI);
+    return ConstantMatCost + BaseT::getArithmeticInstrCost(Opcode, Ty, CostKind,
+                                                           Op1Info, Op2Info,
+                                                           Args, CxtI);
   }
+  return ConstantMatCost +
+         LT.first * getRISCVInstructionCost(Op, LT.second, CostKind);
 }
 
 // TODO: Deduplicate from TargetTransformInfoImplCRTPBase.
diff --git a/llvm/test/Analysis/CostModel/RISCV/arith-fp.ll b/llvm/test/Analysis/CostModel/RISCV/arith-fp.ll
index 306277e46fa5b3..7e12fee3b8983a 100644
--- a/llvm/test/Analysis/CostModel/RISCV/arith-fp.ll
+++ b/llvm/test/Analysis/CostModel/RISCV/arith-fp.ll
@@ -248,36 +248,36 @@ define i32 @fdiv() {
 ; CHECK-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %F16 = fdiv half undef, undef
 ; CHECK-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %F32 = fdiv float undef, undef
 ; CHECK-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %F64 = fdiv double undef, undef
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %V1F16 = fdiv <1 x half> undef, undef
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %V2F16 = fdiv <2 x half> undef, undef
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %V4F16 = fdiv <4 x half> undef, undef
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %V8F16 = fdiv <8 x half> undef, undef
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 8 for instruction: %V16F16 = fdiv <16 x half> undef, undef
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 16 for instruction: %V32F16 = fdiv <32 x half> undef, undef
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %NXV1F16 = fdiv <vscale x 1 x half> undef, undef
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %NXV2F16 = fdiv <vscale x 2 x half> undef, undef
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %NXV4F16 = fdiv <vscale x 4 x half> undef, undef
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %V1F16 = fdiv <1 x half> undef, undef
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %V2F16 = fdiv <2 x half> undef, undef
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %V4F16 = fdiv <4 x half> undef, undef
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %V8F16 = fdiv <8 x half> undef, undef
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %V16F16 = fdiv <16 x half> undef, undef
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %V32F16 = fdiv <32 x half> undef, undef
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %NXV1F16 = fdiv <vscale x 1 x half> undef, undef
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %NXV2F16 = fdiv <vscale x 2 x half> undef, undef
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %NXV4F16 = fdiv <vscale x 4 x half> undef, undef
 ; CHECK-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %NXV8F16 = fdiv <vscale x 8 x half> undef, undef
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %NXV16F16 = fdiv <vscale x 16 x half> undef, undef
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %NXV32F16 = fdiv <vscale x 32 x half> undef, undef
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %V1F32 = fdiv <1 x float> undef, undef
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %V2F32 = fdiv <2 x float> undef, undef
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %V4F32 = fdiv <4 x float> undef, undef
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 8 for instruction: %V8F32 = fdiv <8 x float> undef, undef
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 16 for instruction: %V16F32 = fdiv <16 x float> undef, undef
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %NXV1F32 = fdiv <vscale x 1 x float> undef, undef
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %NXV2F32 = fdiv <vscale x 2 x float> undef, undef
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %NXV16F16 = fdiv <vscale x 16 x half> undef, undef
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 8 for instruction: %NXV32F16 = fdiv <vscale x 32 x half> undef, undef
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %V1F32 = fdiv <1 x float> undef, undef
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %V2F32 = fdiv <2 x float> undef, undef
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %V4F32 = fdiv <4 x float> undef, undef
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %V8F32 = fdiv <8 x float> undef, undef
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %V16F32 = fdiv <16 x float> undef, undef
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %NXV1F32 = fdiv <vscale x 1 x float> undef, undef
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %NXV2F32 = fdiv <vscale x 2 x float> undef, undef
 ; CHECK-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %NXV4F32 = fdiv <vscale x 4 x float> undef, undef
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %NXV8F32 = fdiv <vscale x 8 x float> undef, undef
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %NXV16F32 = fdiv <vscale x 16 x float> undef, undef
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %V1F64 = fdiv <1 x double> undef, undef
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %V2F64 = fdiv <2 x double> undef, undef
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 8 for instruction: %V4F64 = fdiv <4 x double> undef, undef
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 16 for instruction: %V8F64 = fdiv <8 x double> undef, undef
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %NXV1F64 = fdiv <vscale x 1 x double> undef, undef
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %NXV8F32 = fdiv <vscale x 8 x float> undef, undef
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 8 for instruction: %NXV16F32 = fdiv <vscale x 16 x float> undef, undef
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %V1F64 = fdiv <1 x double> undef, undef
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %V2F64 = fdiv <2 x double> undef, undef
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %V4F64 = fdiv <4 x double> undef, undef
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %V8F64 = fdiv <8 x double> undef, undef
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %NXV1F64 = fdiv <vscale x 1 x double> undef, undef
 ; CHECK-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %NXV2F64 = fdiv <vscale x 2 x double> undef, undef
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %NXV4F64 = fdiv <vscale x 4 x double> undef, undef
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %NXV8F64 = fdiv <vscale x 8 x double> undef, undef
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %NXV4F64 = fdiv <vscale x 4 x double> undef, undef
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 8 for instruction: %NXV8F64 = fdiv <vscale x 8 x double> undef, undef
 ; CHECK-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret i32 undef
 ;
   %F16 = fdiv half undef, undef
diff --git a/llvm/test/Analysis/CostModel/RISCV/arith-int.ll b/llvm/test/Analysis/CostModel/RISCV/arith-int.ll
index 00f2cd7b63a4a4..ef54ce491ca3c0 100644
--- a/llvm/test/Analysis/CostModel/RISCV/arith-int.ll
+++ b/llvm/test/Analysis/CostModel/RISCV/arith-int.ll
@@ -705,72 +705,72 @@ define i32 @udiv() {
 ; CHECK-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %I16 = udiv i16 undef, undef
 ; CHECK-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %I32 = udiv i32 undef, undef
 ; CHECK-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %I64 = udiv i64 undef, undef
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %V1I16 = udiv <1 x i16> undef, undef
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %V2I16 = udiv <2 x i16> undef, undef
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %V4I16 = udiv <4 x i16> undef, undef
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %V8I16 = udiv <8 x i16> undef, undef
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %V16I16 = udiv <16 x i16> undef, undef
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 8 for instruction: %V32I16 = udiv <32 x i16> undef, undef
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %V1I16 = udiv <1 x i16> undef, undef
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %V2I16 = udiv <2 x i16> undef, undef
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %V4I16 = udiv <4 x i16> undef, undef
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %V8I16 = udiv <8 x i16> undef, undef
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %V16I16 = udiv <16 x i16> undef, undef
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %V32I16 = udiv <32 x i16> undef, undef
 ; CHECK-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %NXV1I16 = udiv <vscale x 1 x i16> undef, undef
 ; CHECK-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %NXV2I16 = udiv <vscale x 2 x i16> undef, undef
 ; CHECK-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %NXV4I16 = udiv <vscale x 4 x i16> undef, undef
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %NXV8I16 = udiv <vscale x 8 x i16> undef, undef
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %NXV16I16 = udiv <vscale x 16 x i16> undef, undef
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %NXV32I16 = udiv <vscale x 32 x i16> undef, undef
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %V1I32 = udiv <1 x i32> undef, undef
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %V2I32 = udiv <2 x i32> undef, undef
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %V4I32 = udiv <4 x i32> undef, undef
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %V8I32 = udiv <8 x i32> undef, undef
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 8 for instruction: %V16I32 = udiv <16 x i32> undef, undef
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %NXV8I16 = udiv <vscale x 8 x i16> undef, undef
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %NXV16I16 = udiv <vscale x 16 x i16> undef, undef
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 8 for instruction: %NXV32I16 = udiv <vscale x 32 x i16> undef, undef
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %V1I32 = udiv <1 x i32> undef, undef
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %V2I32 = udiv <2 x i32> undef, undef
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %V4I32 = udiv <4 x i32> undef, undef
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %V8I32 = udiv <8 x i32> undef, undef
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %V16I32 = udiv <16 x i32> undef, undef
 ; CHECK-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %NXV1I32 = udiv <vscale x 1 x i32> undef, undef
 ; CHECK-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %NXV2I32 = udiv <vscale x 2 x i32> undef, undef
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %NXV4I32 = udiv <vscale x 4 x i32> undef, undef
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %NXV8I32 = udiv <vscale x 8 x i32> undef, undef
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %NXV16I32 = udiv <vscale x 16 x i32> undef, undef
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %V1I64 = udiv <1 x i64> undef, undef
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %V2I64 = udiv <2 x i64> undef, undef
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %V4I64 = udiv <4 x i64> undef, undef
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 8 for instruction: %V8I64 = udiv <8 x i64> undef, undef
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %NXV4I32 = udiv <vscale x 4 x i32> undef, undef
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %NXV8I32 = udiv <vscale x 8 x i32> undef, undef
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 8 for instruction: %NXV16I32 = udiv <vscale x 16 x i32> undef, undef
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %V1I64 = udiv <1 x i64> undef, undef
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %V2I64 = udiv <2 x i64> undef, undef
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %V4I64 = udiv <4 x i64> undef, undef
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %V8I64 = udiv <8 x i64> undef, undef
 ; CHECK-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %NXV1I64 = udiv <vscale x 1 x i64> undef, undef
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %NXV2I64 = udiv <vscale x 2 x i64> undef, undef
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %NXV4I64 = udiv <vscale x 4 x i64> undef, undef
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %NXV8I64 = udiv <vscale x 8 x i64> undef, undef
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %NXV2I64 = udiv <vscale x 2 x i64> undef, undef
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %NXV4I64 = udiv <vscale x 4 x i64> undef, undef
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 8 for instruction: %NXV8I64 = udiv <vscale x 8 x i64> undef, undef
 ; CHECK-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret i32 undef
 ;
 ; SIFIVE-X280-LABEL: 'udiv'
 ; SIFIVE-X280-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %I16 = udiv i16 undef, undef
 ; SIFIVE-X280-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %I32 = udiv i32 undef, undef
 ; SIFIVE-X280-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %I64 = udiv i64 undef, undef
-; SIFIVE-X280-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %V1I16 = udiv <1 x i16> undef, undef
-; SIFIVE-X280-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %V2I16 = udiv <2 x i16> undef, undef
-; SIFIVE-X280-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %V4I16 = udiv <4 x i16> undef, undef
-; SIFIVE-X280-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %V8I16 = udiv <8 x i16> undef, undef
-; SIFIVE-X280-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %V16I16 = udiv <16 x i16> undef, undef
+; SIFIVE-X280-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %V1I16 = udiv <1 x i16> undef, undef
+; SIFIVE-X280-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %V2I16 = udiv <2 x i16> undef, undef
+; SIFIVE-X280-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %V4I16 = udiv <4 x i16> undef, undef
+; SIFIVE-X280-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %V8I16 = udiv <8 x i16> undef, undef
+; SIFIVE-X280-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %V16I16 = udiv <16 x i16> undef, undef
 ; SIFIVE-X280-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %V32I16 = udiv <32 x i16> undef, undef
 ; SIFIVE-X280-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %NXV1I16 = udiv <vscale x 1 x i16> undef, undef
 ; SIFIVE-X280-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %NXV2I16 = udiv <vscale x 2 x i16> undef, undef
-; SIFIVE-X280-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %NXV4I16 = udiv <vscale x 4 x i16> undef, undef
-; SIFIVE-X280-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %NXV8I16 = udiv <vscale x 8 x i16> undef, undef
-; SIFIVE-X280-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %NXV16I16 = udiv <vscale x 16 x i16> undef, undef
-; SIFIVE-X280-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %NXV32I16 = udiv <vscale x 32 x i16> undef, undef
-; SIFIVE-X280-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %V1I32 = udiv <1 x i32> undef, undef
-; SIFIVE-X280-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %V2I32 = udiv <2 x i32> undef, undef
-; SIFIVE-X280-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %V4I32 = udiv <4 x i32> undef, undef
-; SIFIVE-X280-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %V8I32 = udiv <8 x i32> undef, undef
+; SIFIVE-X280-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %NXV4I16 = udiv <vscale x 4 x i16> undef, undef
+; SIFIVE-X280-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %NXV8I16 = udiv <vscale x 8 x i16> undef, undef
+; SIFIVE-X280-NEXT:  Cost Model: Found an estimated cost of 8 for instruction: %NXV16I16 = udiv <vscale x 16 x i16> undef, undef
+; SIFIVE-X280-NEXT:  Cost Model: Found an estimated cost of 16 for instruction: %NXV32I16 = udiv <vscale x 32 x i16> undef, undef
+; SIFIVE-X280-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %V1I32 = udiv <1 x i32> undef, undef
+; SIFIVE-X280-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %V2I32 = udiv <2 x i32> undef, undef
+; SIFIVE-X280-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %V4I32 = udiv <4 x i32> undef, undef
+; SIFIVE-X280-NEXT:  Cost Model: Found an estimated cost...
[truncated]

``````````

</details>


https://github.com/llvm/llvm-project/pull/89170


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