[llvm] [RISCV][CostModel] add cost for cttz/ctlz under the non-zvbb (PR #117515)

via llvm-commits llvm-commits at lists.llvm.org
Sun Nov 24 20:01:26 PST 2024


llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-llvm-analysis

Author: LiqinWeng (LiqinWeng)

<details>
<summary>Changes</summary>



---

Patch is 24.33 KiB, truncated to 20.00 KiB below, full version: https://github.com/llvm/llvm-project/pull/117515.diff


2 Files Affected:

- (modified) llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp (+8) 
- (modified) llvm/test/Analysis/CostModel/RISCV/int-bit-manip.ll (+78-78) 


``````````diff
diff --git a/llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp b/llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp
index 45576d515112dd..31ccab718a1de2 100644
--- a/llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp
+++ b/llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp
@@ -925,6 +925,14 @@ static const CostTblEntry VectorIntrinsicCostTable[]{
     {Intrinsic::ctpop, MVT::i16, 19},
     {Intrinsic::ctpop, MVT::i32, 20},
     {Intrinsic::ctpop, MVT::i64, 21},
+    {Intrinsic::ctlz, MVT::i8, 19},
+    {Intrinsic::ctlz, MVT::i16, 28},
+    {Intrinsic::ctlz, MVT::i32, 31},
+    {Intrinsic::ctlz, MVT::i64, 35},
+    {Intrinsic::cttz, MVT::i8, 16},
+    {Intrinsic::cttz, MVT::i16, 23},
+    {Intrinsic::cttz, MVT::i32, 24},
+    {Intrinsic::cttz, MVT::i64, 25},
     {Intrinsic::vp_ctpop, MVT::i8, 12},
     {Intrinsic::vp_ctpop, MVT::i16, 19},
     {Intrinsic::vp_ctpop, MVT::i32, 20},
diff --git a/llvm/test/Analysis/CostModel/RISCV/int-bit-manip.ll b/llvm/test/Analysis/CostModel/RISCV/int-bit-manip.ll
index 911993caba4d65..55db70ce1e9125 100644
--- a/llvm/test/Analysis/CostModel/RISCV/int-bit-manip.ll
+++ b/llvm/test/Analysis/CostModel/RISCV/int-bit-manip.ll
@@ -159,45 +159,45 @@ define void @bitreverse() {
 
 define void @ctlz() {
 ; NOZVBB-LABEL: 'ctlz'
-; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %1 = call <2 x i8> @llvm.ctlz.v2i8(<2 x i8> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %2 = call <4 x i8> @llvm.ctlz.v4i8(<4 x i8> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %3 = call <8 x i8> @llvm.ctlz.v8i8(<8 x i8> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %4 = call <16 x i8> @llvm.ctlz.v16i8(<16 x i8> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %5 = call <vscale x 1 x i8> @llvm.ctlz.nxv1i8(<vscale x 1 x i8> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %6 = call <vscale x 2 x i8> @llvm.ctlz.nxv2i8(<vscale x 2 x i8> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %7 = call <vscale x 4 x i8> @llvm.ctlz.nxv4i8(<vscale x 4 x i8> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %8 = call <vscale x 8 x i8> @llvm.ctlz.nxv8i8(<vscale x 8 x i8> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %9 = call <vscale x 16 x i8> @llvm.ctlz.nxv16i8(<vscale x 16 x i8> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Invalid cost for instruction: %10 = call <vscale x 32 x i8> @llvm.ctlz.nxv32i8(<vscale x 32 x i8> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Invalid cost for instruction: %11 = call <vscale x 64 x i8> @llvm.ctlz.nxv64i8(<vscale x 64 x i8> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %12 = call <2 x i16> @llvm.ctlz.v2i16(<2 x i16> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %13 = call <4 x i16> @llvm.ctlz.v4i16(<4 x i16> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %14 = call <8 x i16> @llvm.ctlz.v8i16(<8 x i16> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %15 = call <16 x i16> @llvm.ctlz.v16i16(<16 x i16> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %16 = call <vscale x 1 x i16> @llvm.ctlz.nxv1i16(<vscale x 1 x i16> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %17 = call <vscale x 2 x i16> @llvm.ctlz.nxv2i16(<vscale x 2 x i16> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %18 = call <vscale x 4 x i16> @llvm.ctlz.nxv4i16(<vscale x 4 x i16> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %19 = call <vscale x 8 x i16> @llvm.ctlz.nxv8i16(<vscale x 8 x i16> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %20 = call <vscale x 16 x i16> @llvm.ctlz.nxv16i16(<vscale x 16 x i16> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Invalid cost for instruction: %21 = call <vscale x 32 x i16> @llvm.ctlz.nxv32i16(<vscale x 32 x i16> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %22 = call <2 x i32> @llvm.ctlz.v2i32(<2 x i32> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %23 = call <4 x i32> @llvm.ctlz.v4i32(<4 x i32> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %24 = call <8 x i32> @llvm.ctlz.v8i32(<8 x i32> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %25 = call <16 x i32> @llvm.ctlz.v16i32(<16 x i32> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %26 = call <vscale x 1 x i32> @llvm.ctlz.nxv1i32(<vscale x 1 x i32> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %27 = call <vscale x 2 x i32> @llvm.ctlz.nxv2i32(<vscale x 2 x i32> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %28 = call <vscale x 4 x i32> @llvm.ctlz.nxv4i32(<vscale x 4 x i32> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %29 = call <vscale x 8 x i32> @llvm.ctlz.nxv8i32(<vscale x 8 x i32> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %30 = call <vscale x 16 x i32> @llvm.ctlz.nxv16i32(<vscale x 16 x i32> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %31 = call <2 x i64> @llvm.ctlz.v2i64(<2 x i64> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %32 = call <4 x i64> @llvm.ctlz.v4i64(<4 x i64> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %33 = call <8 x i64> @llvm.ctlz.v8i64(<8 x i64> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %34 = call <16 x i64> @llvm.ctlz.v16i64(<16 x i64> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %35 = call <vscale x 1 x i64> @llvm.ctlz.nxv1i64(<vscale x 1 x i64> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %36 = call <vscale x 2 x i64> @llvm.ctlz.nxv2i64(<vscale x 2 x i64> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %37 = call <vscale x 4 x i64> @llvm.ctlz.nxv4i64(<vscale x 4 x i64> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %38 = call <vscale x 8 x i64> @llvm.ctlz.nxv8i64(<vscale x 8 x i64> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %39 = call <vscale x 16 x i64> @llvm.ctlz.nxv16i64(<vscale x 16 x i64> undef, i1 false)
+; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 19 for instruction: %1 = call <2 x i8> @llvm.ctlz.v2i8(<2 x i8> undef, i1 false)
+; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 19 for instruction: %2 = call <4 x i8> @llvm.ctlz.v4i8(<4 x i8> undef, i1 false)
+; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 19 for instruction: %3 = call <8 x i8> @llvm.ctlz.v8i8(<8 x i8> undef, i1 false)
+; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 19 for instruction: %4 = call <16 x i8> @llvm.ctlz.v16i8(<16 x i8> undef, i1 false)
+; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 19 for instruction: %5 = call <vscale x 1 x i8> @llvm.ctlz.nxv1i8(<vscale x 1 x i8> undef, i1 false)
+; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 19 for instruction: %6 = call <vscale x 2 x i8> @llvm.ctlz.nxv2i8(<vscale x 2 x i8> undef, i1 false)
+; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 19 for instruction: %7 = call <vscale x 4 x i8> @llvm.ctlz.nxv4i8(<vscale x 4 x i8> undef, i1 false)
+; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 19 for instruction: %8 = call <vscale x 8 x i8> @llvm.ctlz.nxv8i8(<vscale x 8 x i8> undef, i1 false)
+; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 19 for instruction: %9 = call <vscale x 16 x i8> @llvm.ctlz.nxv16i8(<vscale x 16 x i8> undef, i1 false)
+; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 19 for instruction: %10 = call <vscale x 32 x i8> @llvm.ctlz.nxv32i8(<vscale x 32 x i8> undef, i1 false)
+; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 19 for instruction: %11 = call <vscale x 64 x i8> @llvm.ctlz.nxv64i8(<vscale x 64 x i8> undef, i1 false)
+; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 28 for instruction: %12 = call <2 x i16> @llvm.ctlz.v2i16(<2 x i16> undef, i1 false)
+; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 28 for instruction: %13 = call <4 x i16> @llvm.ctlz.v4i16(<4 x i16> undef, i1 false)
+; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 28 for instruction: %14 = call <8 x i16> @llvm.ctlz.v8i16(<8 x i16> undef, i1 false)
+; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 28 for instruction: %15 = call <16 x i16> @llvm.ctlz.v16i16(<16 x i16> undef, i1 false)
+; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 28 for instruction: %16 = call <vscale x 1 x i16> @llvm.ctlz.nxv1i16(<vscale x 1 x i16> undef, i1 false)
+; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 28 for instruction: %17 = call <vscale x 2 x i16> @llvm.ctlz.nxv2i16(<vscale x 2 x i16> undef, i1 false)
+; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 28 for instruction: %18 = call <vscale x 4 x i16> @llvm.ctlz.nxv4i16(<vscale x 4 x i16> undef, i1 false)
+; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 28 for instruction: %19 = call <vscale x 8 x i16> @llvm.ctlz.nxv8i16(<vscale x 8 x i16> undef, i1 false)
+; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 28 for instruction: %20 = call <vscale x 16 x i16> @llvm.ctlz.nxv16i16(<vscale x 16 x i16> undef, i1 false)
+; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 28 for instruction: %21 = call <vscale x 32 x i16> @llvm.ctlz.nxv32i16(<vscale x 32 x i16> undef, i1 false)
+; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 31 for instruction: %22 = call <2 x i32> @llvm.ctlz.v2i32(<2 x i32> undef, i1 false)
+; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 31 for instruction: %23 = call <4 x i32> @llvm.ctlz.v4i32(<4 x i32> undef, i1 false)
+; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 31 for instruction: %24 = call <8 x i32> @llvm.ctlz.v8i32(<8 x i32> undef, i1 false)
+; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 31 for instruction: %25 = call <16 x i32> @llvm.ctlz.v16i32(<16 x i32> undef, i1 false)
+; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 31 for instruction: %26 = call <vscale x 1 x i32> @llvm.ctlz.nxv1i32(<vscale x 1 x i32> undef, i1 false)
+; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 31 for instruction: %27 = call <vscale x 2 x i32> @llvm.ctlz.nxv2i32(<vscale x 2 x i32> undef, i1 false)
+; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 31 for instruction: %28 = call <vscale x 4 x i32> @llvm.ctlz.nxv4i32(<vscale x 4 x i32> undef, i1 false)
+; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 31 for instruction: %29 = call <vscale x 8 x i32> @llvm.ctlz.nxv8i32(<vscale x 8 x i32> undef, i1 false)
+; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 31 for instruction: %30 = call <vscale x 16 x i32> @llvm.ctlz.nxv16i32(<vscale x 16 x i32> undef, i1 false)
+; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 35 for instruction: %31 = call <2 x i64> @llvm.ctlz.v2i64(<2 x i64> undef, i1 false)
+; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 35 for instruction: %32 = call <4 x i64> @llvm.ctlz.v4i64(<4 x i64> undef, i1 false)
+; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 35 for instruction: %33 = call <8 x i64> @llvm.ctlz.v8i64(<8 x i64> undef, i1 false)
+; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 35 for instruction: %34 = call <16 x i64> @llvm.ctlz.v16i64(<16 x i64> undef, i1 false)
+; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 35 for instruction: %35 = call <vscale x 1 x i64> @llvm.ctlz.nxv1i64(<vscale x 1 x i64> undef, i1 false)
+; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 35 for instruction: %36 = call <vscale x 2 x i64> @llvm.ctlz.nxv2i64(<vscale x 2 x i64> undef, i1 false)
+; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 35 for instruction: %37 = call <vscale x 4 x i64> @llvm.ctlz.nxv4i64(<vscale x 4 x i64> undef, i1 false)
+; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 35 for instruction: %38 = call <vscale x 8 x i64> @llvm.ctlz.nxv8i64(<vscale x 8 x i64> undef, i1 false)
+; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 70 for instruction: %39 = call <vscale x 16 x i64> @llvm.ctlz.nxv16i64(<vscale x 16 x i64> undef, i1 false)
 ; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret void
 ;
 ; ZVBB-LABEL: 'ctlz'
@@ -286,45 +286,45 @@ define void @ctlz() {
 
 define void @cttz() {
 ; NOZVBB-LABEL: 'cttz'
-; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 22 for instruction: %1 = call <2 x i8> @llvm.cttz.v2i8(<2 x i8> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 44 for instruction: %2 = call <4 x i8> @llvm.cttz.v4i8(<4 x i8> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 88 for instruction: %3 = call <8 x i8> @llvm.cttz.v8i8(<8 x i8> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 176 for instruction: %4 = call <16 x i8> @llvm.cttz.v16i8(<16 x i8> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Invalid cost for instruction: %5 = call <vscale x 1 x i8> @llvm.cttz.nxv1i8(<vscale x 1 x i8> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Invalid cost for instruction: %6 = call <vscale x 2 x i8> @llvm.cttz.nxv2i8(<vscale x 2 x i8> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Invalid cost for instruction: %7 = call <vscale x 4 x i8> @llvm.cttz.nxv4i8(<vscale x 4 x i8> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Invalid cost for instruction: %8 = call <vscale x 8 x i8> @llvm.cttz.nxv8i8(<vscale x 8 x i8> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Invalid cost for instruction: %9 = call <vscale x 16 x i8> @llvm.cttz.nxv16i8(<vscale x 16 x i8> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Invalid cost for instruction: %10 = call <vscale x 32 x i8> @llvm.cttz.nxv32i8(<vscale x 32 x i8> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Invalid cost for instruction: %11 = call <vscale x 64 x i8> @llvm.cttz.nxv64i8(<vscale x 64 x i8> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 22 for instruction: %12 = call <2 x i16> @llvm.cttz.v2i16(<2 x i16> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 44 for instruction: %13 = call <4 x i16> @llvm.cttz.v4i16(<4 x i16> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 88 for instruction: %14 = call <8 x i16> @llvm.cttz.v8i16(<8 x i16> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 191 for instruction: %15 = call <16 x i16> @llvm.cttz.v16i16(<16 x i16> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Invalid cost for instruction: %16 = call <vscale x 1 x i16> @llvm.cttz.nxv1i16(<vscale x 1 x i16> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Invalid cost for instruction: %17 = call <vscale x 2 x i16> @llvm.cttz.nxv2i16(<vscale x 2 x i16> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Invalid cost for instruction: %18 = call <vscale x 4 x i16> @llvm.cttz.nxv4i16(<vscale x 4 x i16> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Invalid cost for instruction: %19 = call <vscale x 8 x i16> @llvm.cttz.nxv8i16(<vscale x 8 x i16> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Invalid cost for instruction: %20 = call <vscale x 16 x i16> @llvm.cttz.nxv16i16(<vscale x 16 x i16> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Invalid cost for instruction: %21 = call <vscale x 32 x i16> @llvm.cttz.nxv32i16(<vscale x 32 x i16> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 22 for instruction: %22 = call <2 x i32> @llvm.cttz.v2i32(<2 x i32> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 44 for instruction: %23 = call <4 x i32> @llvm.cttz.v4i32(<4 x i32> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 95 for instruction: %24 = call <8 x i32> @llvm.cttz.v8i32(<8 x i32> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 191 for instruction: %25 = call <16 x i32> @llvm.cttz.v16i32(<16 x i32> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Invalid cost for instruction: %26 = call <vscale x 1 x i32> @llvm.cttz.nxv1i32(<vscale x 1 x i32> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Invalid cost for instruction: %27 = call <vscale x 2 x i32> @llvm.cttz.nxv2i32(<vscale x 2 x i32> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Invalid cost for instruction: %28 = call <vscale x 4 x i32> @llvm.cttz.nxv4i32(<vscale x 4 x i32> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Invalid cost for instruction: %29 = call <vscale x 8 x i32> @llvm.cttz.nxv8i32(<vscale x 8 x i32> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Invalid cost for instruction: %30 = call <vscale x 16 x i32> @llvm.cttz.nxv16i32(<vscale x 16 x i32> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 22 for instruction: %31 = call <2 x i64> @llvm.cttz.v2i64(<2 x i64> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 47 for instruction: %32 = call <4 x i64> @llvm.cttz.v4i64(<4 x i64> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 95 for instruction: %33 = call <8 x i64> @llvm.cttz.v8i64(<8 x i64> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 191 for instruction: %34 = call <16 x i64> @llvm.cttz.v16i64(<16 x i64> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Invalid cost for instruction: %35 = call <vscale x 1 x i64> @llvm.cttz.nxv1i64(<vscale x 1 x i64> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Invalid cost for instruction: %36 = call <vscale x 2 x i64> @llvm.cttz.nxv2i64(<vscale x 2 x i64> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Invalid cost for instruction: %37 = call <vscale x 4 x i64> @llvm.cttz.nxv4i64(<vscale x 4 x i64> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Invalid cost for instruction: %38 = call <vscale x 8 x i64> @llvm.cttz.nxv8i64(<vscale x 8 x i64> undef, i1 false)
-; NOZVBB-NEXT:  Cost Model: Invalid cost for instruction: %39 = call <vscale x 16 x i64> @llvm.cttz.nxv16i64(<vscale x 16 x i64> undef, i1 false)
+; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 16 for instruction: %1 = call <2 x i8> @llvm.cttz.v2i8(<2 x i8> undef, i1 false)
+; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 16 for instruction: %2 = call <4 x i8> @llvm.cttz.v4i8(<4 x i8> undef, i1 false)
+; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 16 for instruction: %3 = call <8 x i8> @llvm.cttz.v8i8(<8 x i8> undef, i1 false)
+; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 16 for instruction: %4 = call <16 x i8> @llvm.cttz.v16i8(<16 x i8> undef, i1 false)
+; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 16 for instruction: %5 = call <vscale x 1 x i8> @llvm.cttz.nxv1i8(<vscale x 1 x i8> undef, i1 false)
+; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 16 for instruction: %6 = call <vscale x 2 x i8> @llvm.cttz.nxv2i8(<vscale x 2 x i8> undef, i1 false)
+; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 16 for instruction: %7 = call <vscale x 4 x i8> @llvm.cttz.nxv4i8(<vscale x 4 x i8> undef, i1 false)
+; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 16 for instruction: %8 = call <vscale x 8 x i8> @llvm.cttz.nxv8i8(<vscale x 8 x i8> undef, i1 false)
+; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 16 for instruction: %9 = call <vscale x 16 x i8> @llvm.cttz.nxv16i8(<vscale x 16 x i8> undef, i1 false)
+; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 16 for instruction: %10 = call <vscale x 32 x i8> @llvm.cttz.nxv32i8(<vscale x 32 x i8> undef, i1 false)
+; NOZVBB-NEXT:  Cost Model: Found an estimated cost of 16 for instruction: %11 = call <vscale x 64 x i8> @llvm.cttz.nxv64i8(<vsca...
[truncated]

``````````

</details>


https://github.com/llvm/llvm-project/pull/117515


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