[llvm] [RISCV][TTI] Add address computation cost for getGaterhScatterOpCost(). (PR #149955)
via llvm-commits
llvm-commits at lists.llvm.org
Mon Jul 21 19:50:26 PDT 2025
llvmbot wrote:
<!--LLVM PR SUMMARY COMMENT-->
@llvm/pr-subscribers-llvm-analysis
@llvm/pr-subscribers-backend-risc-v
Author: Elvis Wang (ElvisWang123)
<details>
<summary>Changes</summary>
This patch add the address computation cost for the `getGatherScatterOpCost()` by `add <base_addr>, <offset>`.
This can help the cost of the gather/scatter more expensive than strided memory access.
This patch is also the preparation of generating the strided memory recipes in the LV.
Note that some tests changes shows that some loops won't be vectorized after this patch. It's fine since it should use strided memory access which has same cost with gather/scatter before the patch.
---
Patch is 125.35 KiB, truncated to 20.00 KiB below, full version: https://github.com/llvm/llvm-project/pull/149955.diff
12 Files Affected:
- (modified) llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp (+7-1)
- (modified) llvm/test/Analysis/CostModel/RISCV/fixed-vector-gather.ll (+43-43)
- (modified) llvm/test/Analysis/CostModel/RISCV/fixed-vector-scatter.ll (+43-43)
- (modified) llvm/test/Analysis/CostModel/RISCV/gep.ll (+4-4)
- (modified) llvm/test/Analysis/CostModel/RISCV/scalable-gather.ll (+41-41)
- (modified) llvm/test/Analysis/CostModel/RISCV/scalable-scatter.ll (+41-41)
- (modified) llvm/test/Analysis/CostModel/RISCV/vp-intrinsics.ll (+16-16)
- (modified) llvm/test/Transforms/LoopVectorize/RISCV/blocks-with-dead-instructions.ll (+48-48)
- (modified) llvm/test/Transforms/LoopVectorize/RISCV/dead-ops-cost.ll (+29-29)
- (modified) llvm/test/Transforms/LoopVectorize/RISCV/uniform-load-store.ll (+8-72)
- (modified) llvm/test/Transforms/LoopVectorize/RISCV/vf-will-not-generate-any-vector-insts.ll (+2-39)
- (modified) llvm/test/Transforms/SLPVectorizer/RISCV/remarks-insert-into-small-vector.ll (+1-1)
``````````diff
diff --git a/llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp b/llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp
index 56ead92187b04..a7bc80b721db7 100644
--- a/llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp
+++ b/llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp
@@ -1085,6 +1085,12 @@ InstructionCost RISCVTTIImpl::getGatherScatterOpCost(
return BaseT::getGatherScatterOpCost(Opcode, DataTy, Ptr, VariableMask,
Alignment, CostKind, I);
+ // Gather/Scatter instruction will need to calculate the address of each
+ // element before accessing memory.
+ InstructionCost AddrCost = getArithmeticInstrCost(
+ Instruction::Add, Ptr->getType(), CostKind,
+ {TTI::OK_AnyValue, TTI::OP_None}, {TTI::OK_AnyValue, TTI::OP_None}, {});
+
// Cost is proportional to the number of memory operations implied. For
// scalable vectors, we use an estimate on that number since we don't
// know exactly what VL will be.
@@ -1093,7 +1099,7 @@ InstructionCost RISCVTTIImpl::getGatherScatterOpCost(
getMemoryOpCost(Opcode, VTy.getElementType(), Alignment, 0, CostKind,
{TTI::OK_AnyValue, TTI::OP_None}, I);
unsigned NumLoads = getEstimatedVLFor(&VTy);
- return NumLoads * MemOpCost;
+ return AddrCost + NumLoads * MemOpCost;
}
InstructionCost RISCVTTIImpl::getExpandCompressMemoryOpCost(
diff --git a/llvm/test/Analysis/CostModel/RISCV/fixed-vector-gather.ll b/llvm/test/Analysis/CostModel/RISCV/fixed-vector-gather.ll
index 6eec7ed2f98ec..e01bfe4670314 100644
--- a/llvm/test/Analysis/CostModel/RISCV/fixed-vector-gather.ll
+++ b/llvm/test/Analysis/CostModel/RISCV/fixed-vector-gather.ll
@@ -6,49 +6,49 @@
define i32 @masked_gather() {
; CHECK-LABEL: 'masked_gather'
-; CHECK-NEXT: Cost Model: Found an estimated cost of 8 for instruction: %V8F64 = call <8 x double> @llvm.masked.gather.v8f64.v8p0(<8 x ptr> undef, i32 8, <8 x i1> undef, <8 x double> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 4 for instruction: %V4F64 = call <4 x double> @llvm.masked.gather.v4f64.v4p0(<4 x ptr> undef, i32 8, <4 x i1> undef, <4 x double> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %V2F64 = call <2 x double> @llvm.masked.gather.v2f64.v2p0(<2 x ptr> undef, i32 8, <2 x i1> undef, <2 x double> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %V1F64 = call <1 x double> @llvm.masked.gather.v1f64.v1p0(<1 x ptr> undef, i32 8, <1 x i1> undef, <1 x double> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 16 for instruction: %V16F32 = call <16 x float> @llvm.masked.gather.v16f32.v16p0(<16 x ptr> undef, i32 4, <16 x i1> undef, <16 x float> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 8 for instruction: %V8F32 = call <8 x float> @llvm.masked.gather.v8f32.v8p0(<8 x ptr> undef, i32 4, <8 x i1> undef, <8 x float> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 4 for instruction: %V4F32 = call <4 x float> @llvm.masked.gather.v4f32.v4p0(<4 x ptr> undef, i32 4, <4 x i1> undef, <4 x float> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %V2F32 = call <2 x float> @llvm.masked.gather.v2f32.v2p0(<2 x ptr> undef, i32 4, <2 x i1> undef, <2 x float> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %V1F32 = call <1 x float> @llvm.masked.gather.v1f32.v1p0(<1 x ptr> undef, i32 4, <1 x i1> undef, <1 x float> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 32 for instruction: %V32BF16 = call <32 x bfloat> @llvm.masked.gather.v32bf16.v32p0(<32 x ptr> undef, i32 2, <32 x i1> undef, <32 x bfloat> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 16 for instruction: %V16BF16 = call <16 x bfloat> @llvm.masked.gather.v16bf16.v16p0(<16 x ptr> undef, i32 2, <16 x i1> undef, <16 x bfloat> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 8 for instruction: %V8BF16 = call <8 x bfloat> @llvm.masked.gather.v8bf16.v8p0(<8 x ptr> undef, i32 2, <8 x i1> undef, <8 x bfloat> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 4 for instruction: %V4BF16 = call <4 x bfloat> @llvm.masked.gather.v4bf16.v4p0(<4 x ptr> undef, i32 2, <4 x i1> undef, <4 x bfloat> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %V2BF16 = call <2 x bfloat> @llvm.masked.gather.v2bf16.v2p0(<2 x ptr> undef, i32 2, <2 x i1> undef, <2 x bfloat> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %V1BF16 = call <1 x bfloat> @llvm.masked.gather.v1bf16.v1p0(<1 x ptr> undef, i32 2, <1 x i1> undef, <1 x bfloat> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 32 for instruction: %V32F16 = call <32 x half> @llvm.masked.gather.v32f16.v32p0(<32 x ptr> undef, i32 2, <32 x i1> undef, <32 x half> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 16 for instruction: %V16F16 = call <16 x half> @llvm.masked.gather.v16f16.v16p0(<16 x ptr> undef, i32 2, <16 x i1> undef, <16 x half> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 8 for instruction: %V8F16 = call <8 x half> @llvm.masked.gather.v8f16.v8p0(<8 x ptr> undef, i32 2, <8 x i1> undef, <8 x half> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 4 for instruction: %V4F16 = call <4 x half> @llvm.masked.gather.v4f16.v4p0(<4 x ptr> undef, i32 2, <4 x i1> undef, <4 x half> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %V2F16 = call <2 x half> @llvm.masked.gather.v2f16.v2p0(<2 x ptr> undef, i32 2, <2 x i1> undef, <2 x half> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %V1F16 = call <1 x half> @llvm.masked.gather.v1f16.v1p0(<1 x ptr> undef, i32 2, <1 x i1> undef, <1 x half> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 8 for instruction: %V8I64 = call <8 x i64> @llvm.masked.gather.v8i64.v8p0(<8 x ptr> undef, i32 8, <8 x i1> undef, <8 x i64> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 4 for instruction: %V4I64 = call <4 x i64> @llvm.masked.gather.v4i64.v4p0(<4 x ptr> undef, i32 8, <4 x i1> undef, <4 x i64> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %V2I64 = call <2 x i64> @llvm.masked.gather.v2i64.v2p0(<2 x ptr> undef, i32 8, <2 x i1> undef, <2 x i64> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %V1I64 = call <1 x i64> @llvm.masked.gather.v1i64.v1p0(<1 x ptr> undef, i32 8, <1 x i1> undef, <1 x i64> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 16 for instruction: %V16I32 = call <16 x i32> @llvm.masked.gather.v16i32.v16p0(<16 x ptr> undef, i32 4, <16 x i1> undef, <16 x i32> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 8 for instruction: %V8I32 = call <8 x i32> @llvm.masked.gather.v8i32.v8p0(<8 x ptr> undef, i32 4, <8 x i1> undef, <8 x i32> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 4 for instruction: %V4I32 = call <4 x i32> @llvm.masked.gather.v4i32.v4p0(<4 x ptr> undef, i32 4, <4 x i1> undef, <4 x i32> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %V2I32 = call <2 x i32> @llvm.masked.gather.v2i32.v2p0(<2 x ptr> undef, i32 4, <2 x i1> undef, <2 x i32> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %V1I32 = call <1 x i32> @llvm.masked.gather.v1i32.v1p0(<1 x ptr> undef, i32 4, <1 x i1> undef, <1 x i32> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 32 for instruction: %V32I16 = call <32 x i16> @llvm.masked.gather.v32i16.v32p0(<32 x ptr> undef, i32 2, <32 x i1> undef, <32 x i16> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 16 for instruction: %V16I16 = call <16 x i16> @llvm.masked.gather.v16i16.v16p0(<16 x ptr> undef, i32 2, <16 x i1> undef, <16 x i16> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 8 for instruction: %V8I16 = call <8 x i16> @llvm.masked.gather.v8i16.v8p0(<8 x ptr> undef, i32 2, <8 x i1> undef, <8 x i16> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 4 for instruction: %V4I16 = call <4 x i16> @llvm.masked.gather.v4i16.v4p0(<4 x ptr> undef, i32 2, <4 x i1> undef, <4 x i16> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %V2I16 = call <2 x i16> @llvm.masked.gather.v2i16.v2p0(<2 x ptr> undef, i32 2, <2 x i1> undef, <2 x i16> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %V1I16 = call <1 x i16> @llvm.masked.gather.v1i16.v1p0(<1 x ptr> undef, i32 2, <1 x i1> undef, <1 x i16> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 64 for instruction: %V64I8 = call <64 x i8> @llvm.masked.gather.v64i8.v64p0(<64 x ptr> undef, i32 1, <64 x i1> undef, <64 x i8> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 32 for instruction: %V32I8 = call <32 x i8> @llvm.masked.gather.v32i8.v32p0(<32 x ptr> undef, i32 1, <32 x i1> undef, <32 x i8> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 16 for instruction: %V16I8 = call <16 x i8> @llvm.masked.gather.v16i8.v16p0(<16 x ptr> undef, i32 1, <16 x i1> undef, <16 x i8> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 8 for instruction: %V8I8 = call <8 x i8> @llvm.masked.gather.v8i8.v8p0(<8 x ptr> undef, i32 1, <8 x i1> undef, <8 x i8> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 4 for instruction: %V4I8 = call <4 x i8> @llvm.masked.gather.v4i8.v4p0(<4 x ptr> undef, i32 1, <4 x i1> undef, <4 x i8> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %V2I8 = call <2 x i8> @llvm.masked.gather.v2i8.v2p0(<2 x ptr> undef, i32 1, <2 x i1> undef, <2 x i8> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %V1I8 = call <1 x i8> @llvm.masked.gather.v1i8.v1p0(<1 x ptr> undef, i32 1, <1 x i1> undef, <1 x i8> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 12 for instruction: %V8F64 = call <8 x double> @llvm.masked.gather.v8f64.v8p0(<8 x ptr> undef, i32 8, <8 x i1> undef, <8 x double> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 6 for instruction: %V4F64 = call <4 x double> @llvm.masked.gather.v4f64.v4p0(<4 x ptr> undef, i32 8, <4 x i1> undef, <4 x double> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 3 for instruction: %V2F64 = call <2 x double> @llvm.masked.gather.v2f64.v2p0(<2 x ptr> undef, i32 8, <2 x i1> undef, <2 x double> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %V1F64 = call <1 x double> @llvm.masked.gather.v1f64.v1p0(<1 x ptr> undef, i32 8, <1 x i1> undef, <1 x double> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 24 for instruction: %V16F32 = call <16 x float> @llvm.masked.gather.v16f32.v16p0(<16 x ptr> undef, i32 4, <16 x i1> undef, <16 x float> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 12 for instruction: %V8F32 = call <8 x float> @llvm.masked.gather.v8f32.v8p0(<8 x ptr> undef, i32 4, <8 x i1> undef, <8 x float> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 6 for instruction: %V4F32 = call <4 x float> @llvm.masked.gather.v4f32.v4p0(<4 x ptr> undef, i32 4, <4 x i1> undef, <4 x float> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 3 for instruction: %V2F32 = call <2 x float> @llvm.masked.gather.v2f32.v2p0(<2 x ptr> undef, i32 4, <2 x i1> undef, <2 x float> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %V1F32 = call <1 x float> @llvm.masked.gather.v1f32.v1p0(<1 x ptr> undef, i32 4, <1 x i1> undef, <1 x float> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 48 for instruction: %V32BF16 = call <32 x bfloat> @llvm.masked.gather.v32bf16.v32p0(<32 x ptr> undef, i32 2, <32 x i1> undef, <32 x bfloat> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 24 for instruction: %V16BF16 = call <16 x bfloat> @llvm.masked.gather.v16bf16.v16p0(<16 x ptr> undef, i32 2, <16 x i1> undef, <16 x bfloat> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 12 for instruction: %V8BF16 = call <8 x bfloat> @llvm.masked.gather.v8bf16.v8p0(<8 x ptr> undef, i32 2, <8 x i1> undef, <8 x bfloat> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 6 for instruction: %V4BF16 = call <4 x bfloat> @llvm.masked.gather.v4bf16.v4p0(<4 x ptr> undef, i32 2, <4 x i1> undef, <4 x bfloat> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 3 for instruction: %V2BF16 = call <2 x bfloat> @llvm.masked.gather.v2bf16.v2p0(<2 x ptr> undef, i32 2, <2 x i1> undef, <2 x bfloat> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %V1BF16 = call <1 x bfloat> @llvm.masked.gather.v1bf16.v1p0(<1 x ptr> undef, i32 2, <1 x i1> undef, <1 x bfloat> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 48 for instruction: %V32F16 = call <32 x half> @llvm.masked.gather.v32f16.v32p0(<32 x ptr> undef, i32 2, <32 x i1> undef, <32 x half> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 24 for instruction: %V16F16 = call <16 x half> @llvm.masked.gather.v16f16.v16p0(<16 x ptr> undef, i32 2, <16 x i1> undef, <16 x half> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 12 for instruction: %V8F16 = call <8 x half> @llvm.masked.gather.v8f16.v8p0(<8 x ptr> undef, i32 2, <8 x i1> undef, <8 x half> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 6 for instruction: %V4F16 = call <4 x half> @llvm.masked.gather.v4f16.v4p0(<4 x ptr> undef, i32 2, <4 x i1> undef, <4 x half> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 3 for instruction: %V2F16 = call <2 x half> @llvm.masked.gather.v2f16.v2p0(<2 x ptr> undef, i32 2, <2 x i1> undef, <2 x half> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %V1F16 = call <1 x half> @llvm.masked.gather.v1f16.v1p0(<1 x ptr> undef, i32 2, <1 x i1> undef, <1 x half> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 12 for instruction: %V8I64 = call <8 x i64> @llvm.masked.gather.v8i64.v8p0(<8 x ptr> undef, i32 8, <8 x i1> undef, <8 x i64> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 6 for instruction: %V4I64 = call <4 x i64> @llvm.masked.gather.v4i64.v4p0(<4 x ptr> undef, i32 8, <4 x i1> undef, <4 x i64> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 3 for instruction: %V2I64 = call <2 x i64> @llvm.masked.gather.v2i64.v2p0(<2 x ptr> undef, i32 8, <2 x i1> undef, <2 x i64> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %V1I64 = call <1 x i64> @llvm.masked.gather.v1i64.v1p0(<1 x ptr> undef, i32 8, <1 x i1> undef, <1 x i64> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 24 for instruction: %V16I32 = call <16 x i32> @llvm.masked.gather.v16i32.v16p0(<16 x ptr> undef, i32 4, <16 x i1> undef, <16 x i32> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 12 for instruction: %V8I32 = call <8 x i32> @llvm.masked.gather.v8i32.v8p0(<8 x ptr> undef, i32 4, <8 x i1> undef, <8 x i32> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 6 for instruction: %V4I32 = call <4 x i32> @llvm.masked.gather.v4i32.v4p0(<4 x ptr> undef, i32 4, <4 x i1> undef, <4 x i32> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 3 for instruction: %V2I32 = call <2 x i32> @llvm.masked.gather.v2i32.v2p0(<2 x ptr> undef, i32 4, <2 x i1> undef, <2 x i32> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %V1I32 = call <1 x i32> @llvm.masked.gather.v1i32.v1p0(<1 x ptr> undef, i32 4, <1 x i1> undef, <1 x i32> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 48 for instruction: %V32I16 = call <32 x i16> @llvm.masked.gather.v32i16.v32p0(<32 x ptr> undef, i32 2, <32 x i1> undef, <32 x i16> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 24 for instruction: %V16I16 = call <16 x i16> @llvm.masked.gather.v16i16.v16p0(<16 x ptr> undef, i32 2, <16 x i1> undef, <16 x i16> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 12 for instruction: %V8I16 = call <8 x i16> @llvm.masked.gather.v8i16.v8p0(<8 x ptr> undef, i32 2, <8 x i1> undef, <8 x i16> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 6 for instruction: %V4I16 = call <4 x i16> @llvm.masked.gather.v4i16.v4p0(<4 x ptr> undef, i32 2, <4 x i1> undef, <4 x i16> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 3 for instruction: %V2I16 = call <2 x i16> @llvm.masked.gather.v2i16.v2p0(<2 x ptr> undef, i32 2, <2 x i1> undef, <2 x i16> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %V1I16 = call <1 x i16> @llvm.masked.gather.v1i16.v1p0(<1 x ptr> undef, i32 2, <1 x i1> undef, <1 x i16> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 96 for instruction: %V64I8 = call <64 x i8> @llvm.masked.gather.v64i8.v64p0(<64 x ptr> undef, i32 1, <64 x i1> undef, <64 x i8> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 48 for instruction: %V32I8 = call <32 x i8> @llvm.masked.gather.v32i8.v32p0(<32 x ptr> undef, i32 1, <32 x i1> undef, <32 x i8> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 24 for instruction: %V16I8 = call <16 x i8> @llvm.masked.gather.v16i8.v16p0(<16 x ptr> undef, i32 1, <16 x i1> undef, <16 x i8> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 12 for instruction: %V8I8 = call <8 x i8> @llvm.masked.gather.v8i8.v8p0(<8 x ptr> undef, i32 1, <8 x i1> undef, <8 x i8> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 6 for instruction: %V4I8 = call <4 x i8> @llvm.masked.gather.v4i8.v4p0(<4 x ptr> undef, i32 1, <4 x i1> undef, <4 x i8> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 3 for instruction: %V2I8 = call <2 x i8> @llvm.masked.gather.v2i8.v2p0(<2 x ptr> undef, i32 1, <2 x i1> undef, <2 x i8> undef)
+; CHECK-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %V1I8 = call <1 x i8> @llvm.masked.gather.v1i8.v1p0(<1 x ptr> undef, i32 1, <1 x i1> undef, <1 x i8> undef)
; CHECK-NEXT: Cost Model: Found an estimated cost of 28 for instruction: %V8F64.u = call <8 x double> @llvm.masked.gather.v8f64.v8p0(<8 x ptr> undef, i32 2, <8 x i1> undef, <8 x double> undef)
; CHECK-NEXT: Cost Model: Found an estimated cost of 14 for instruction: %V4F64.u = call <4 x double> @llvm.masked.gather.v4f64.v4p0(<4 x ptr> undef, i32 2, <4 x i1> undef, <4 x double> undef)
; CHECK-NEXT: Cost Model: Found an estimated cost of 7 for instruction: %V2F64.u = call <2 x double> @llvm.masked.gather.v2f64.v2p0(<2 x ptr> undef, i32 2, <2 x i1> undef, <2 x double> undef)
diff --git a/llvm/test/Analysis/CostModel/RISCV/fixed-vector-scatter.ll b/llvm/test/Analysis/CostModel/RISCV/fixed-vector-scatter.ll
index 338683e12654c..bdab59e47d21d 100644
--- a/llvm/test/Analysis/CostModel/RISCV/fixed-vector-scatter.ll
+++ b/llvm/test/Analysis/CostModel/RISCV/fixed-vector-scatter.ll
@@ -6,49 +6,49 @@
define i32 @masked_scatter() {
; CHECK-LABEL: 'masked_scatter'
-; CHECK-NEXT: Cost Model: Found an estimated cost of 8 for instruction: call void @llvm.masked.scatter.v8f64.v8p0(<8 x double> undef, <8 x ptr> undef, i32 8, <8 x i1> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 4 for instruction: call void @llvm.masked.scatter.v4f64.v4p0(<4 x double> undef, <4 x ptr> undef, i32 8, <4 x i1> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 2 for instruction: call void @llvm.masked.scatter.v2f64.v2p0(<2 x double> undef, <2 x ptr> undef, i32 8, <2 x i1> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 1 for instruction: call void @llvm.masked.scatter.v1f64.v1p0(<1 x double> undef, <1 x ptr> undef, i32 8, <1 x i1> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 16 for instruction: call void @llvm.masked.scatter.v16f32.v16p0(<16 x float> undef, <16 x ptr> undef, i32 4, <16 x i1> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 8 for instruction: call void @llvm.masked.scatter.v8f32.v8p0(<8 x float> undef, <8 x ptr> undef, i32 4, <8 x i1> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 4 for instruction: call void @llvm.masked.scatter.v4f32.v4p0(<4 x float> undef, <4 x ptr> undef, i32 4, <4 x i1> undef)
-; CHECK-NEXT: Cost Model: Found an estimated cost of 2 for instruction: call void @llvm.masked.scatter.v2f32.v2p0(<2 x float> undef, <2 x ptr> undef, i32 4, <2 x i1> ...
[truncated]
``````````
</details>
https://github.com/llvm/llvm-project/pull/149955
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