[RISCV] Add zvfhmin cost model test coverage. NFC

This adds tests coverage for zvfhmin and halfs in general in the cost
model tests.

Some existing half tests were split into separate functions so that if
the check prefixes diverge it won't affect the rest of the non-half
instructions.

Whilst we're here, also remove the redundant
-riscv-vector-bits-min=128 and declares.

Author: lukel97

llvm/test/Analysis/CostModel/RISCV/arith-fp.ll

@@ -1,6 +1,8 @@
 ; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py
 ; RUN: opt < %s -passes="print<cost-model>" 2>&1 -disable-output -S -mtriple=riscv64 -mattr=+v,+f,+d,+zfh,+zvfh | FileCheck %s
+; RUN: opt < %s -passes="print<cost-model>" 2>&1 -disable-output -S -mtriple=riscv64 -mattr=+v,+f,+d,+zfh,+zvfhmin | FileCheck %s
 ; RUN: opt < %s -passes="print<cost-model>" -cost-kind=code-size 2>&1 -disable-output -S -mtriple=riscv64 -mattr=+v,+f,+d,+zfh,+zvfh | FileCheck %s --check-prefix=SIZE
+; RUN: opt < %s -passes="print<cost-model>" -cost-kind=code-size 2>&1 -disable-output -S -mtriple=riscv64 -mattr=+v,+f,+d,+zfh,+zvfhmin | FileCheck %s --check-prefix=SIZE
 
 define void @broadcast_scalable() {
 ; CHECK-LABEL: 'broadcast_scalable'

llvm/test/Analysis/CostModel/RISCV/fp-min-max-abs.ll

@@ -1,6 +1,8 @@
 ; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py
 ; RUN: opt < %s -passes="print<cost-model>" 2>&1 -disable-output -mtriple=riscv32 -mattr=+v,+f,+d,+zfh,+zvfh | FileCheck %s
+; RUN: opt < %s -passes="print<cost-model>" 2>&1 -disable-output -mtriple=riscv32 -mattr=+v,+f,+d,+zfh,+zvfhmin | FileCheck %s
 ; RUN: opt < %s -passes="print<cost-model>" -cost-kind=code-size 2>&1 -disable-output -mtriple=riscv32 -mattr=+v,+f,+d,+zfh,+zvfh | FileCheck %s --check-prefix=SIZE
+; RUN: opt < %s -passes="print<cost-model>" -cost-kind=code-size 2>&1 -disable-output -mtriple=riscv32 -mattr=+v,+f,+d,+zfh,+zvfhmin | FileCheck %s --check-prefix=SIZE
 ; Check that we don't crash querying costs when vectors are not enabled.
 ; RUN: opt -passes="print<cost-model>" 2>&1 -disable-output -mtriple=riscv32
 

llvm/test/Analysis/CostModel/RISCV/fround.ll

@@ -1,6 +1,8 @@
 ; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py
 ; RUN: opt < %s -passes="print<cost-model>" 2>&1 -disable-output -mtriple=riscv32 -mattr=+v,+f,+d,+zfh,+zvfh -riscv-v-vector-bits-min=-1 | FileCheck %s
+; RUN: opt < %s -passes="print<cost-model>" 2>&1 -disable-output -mtriple=riscv32 -mattr=+v,+f,+d,+zfh,+zvfhmin -riscv-v-vector-bits-min=-1 | FileCheck %s
 ; RUN: opt < %s -passes="print<cost-model>" -cost-kind=code-size 2>&1 -disable-output -mtriple=riscv32 -mattr=+v,+f,+d,+zfh,+zvfh -riscv-v-vector-bits-min=-1 | FileCheck %s --check-prefixes=SIZE
+; RUN: opt < %s -passes="print<cost-model>" -cost-kind=code-size 2>&1 -disable-output -mtriple=riscv32 -mattr=+v,+f,+d,+zfh,+zvfhmin -riscv-v-vector-bits-min=-1 | FileCheck %s --check-prefixes=SIZE
 ; Check that we don't crash querying costs when vectors are not enabled.
 ; RUN: opt -passes="print<cost-model>" 2>&1 -disable-output -mtriple=riscv32
 

llvm/test/Analysis/CostModel/RISCV/scalable-gather.ll

@@ -1,6 +1,8 @@
 ; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py
 ; RUN: opt < %s -passes="print<cost-model>" 2>&1 -disable-output -mtriple=riscv32 -mattr=+v,+f,+d,+zfh,+zvfh -riscv-v-vector-bits-min=-1 | FileCheck %s
+; RUN: opt < %s -passes="print<cost-model>" 2>&1 -disable-output -mtriple=riscv32 -mattr=+v,+f,+d,+zfh,+zvfhmin -riscv-v-vector-bits-min=-1 | FileCheck %s
 ; RUN: opt < %s -passes="print<cost-model>" -cost-kind=code-size 2>&1 -disable-output -mtriple=riscv32 -mattr=+v,+f,+d,+zfh,+zvfh -riscv-v-vector-bits-min=-1 | FileCheck %s --check-prefix=SIZE
+; RUN: opt < %s -passes="print<cost-model>" -cost-kind=code-size 2>&1 -disable-output -mtriple=riscv32 -mattr=+v,+f,+d,+zfh,+zvfhmin -riscv-v-vector-bits-min=-1 | FileCheck %s --check-prefix=SIZE
 ; Check that we don't crash querying costs when vectors are not enabled.
 ; RUN: opt -passes="print<cost-model>" 2>&1 -disable-output -mtriple=riscv32
 

llvm/test/Analysis/CostModel/RISCV/scalable-scatter.ll

@@ -1,6 +1,8 @@
 ; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py
 ; RUN: opt < %s -passes="print<cost-model>" 2>&1 -disable-output -S -mtriple=riscv64 -mattr=+v,+f,+d,+zfh,+zvfh | FileCheck %s
+; RUN: opt < %s -passes="print<cost-model>" 2>&1 -disable-output -S -mtriple=riscv64 -mattr=+v,+f,+d,+zfh,+zvfhmin | FileCheck %s
 ; RUN: opt < %s -passes="print<cost-model>" -cost-kind=code-size 2>&1 -disable-output -S -mtriple=riscv64 -mattr=+v,+f,+d,+zfh,+zvfh | FileCheck %s --check-prefix=SIZE
+; RUN: opt < %s -passes="print<cost-model>" -cost-kind=code-size 2>&1 -disable-output -S -mtriple=riscv64 -mattr=+v,+f,+d,+zfh,+zvfhmin | FileCheck %s --check-prefix=SIZE
 
 define void @vector_splice() {
 ; CHECK-LABEL: 'vector_splice'
@@ -165,59 +167,3 @@ define void @vector_splice() {
 
   ret void
 }
-
-declare <vscale x 1 x i8> @llvm.vector.splice.nxv1i8(<vscale x 1 x i8>, <vscale x 1 x i8>, i32)
-declare <vscale x 2 x i8> @llvm.vector.splice.nxv2i8(<vscale x 2 x i8>, <vscale x 2 x i8>, i32)
-declare <vscale x 4 x i8> @llvm.vector.splice.nxv4i8(<vscale x 4 x i8>, <vscale x 4 x i8>, i32)
-declare <vscale x 8 x i8> @llvm.vector.splice.nxv8i8(<vscale x 8 x i8>, <vscale x 8 x i8>, i32)
-declare <vscale x 16 x i8> @llvm.vector.splice.nxv16i8(<vscale x 16 x i8>, <vscale x 16 x i8>, i32)
-declare <vscale x 32 x i8> @llvm.vector.splice.nxv32i8(<vscale x 32 x i8>, <vscale x 32 x i8>, i32)
-declare <vscale x 64 x i8> @llvm.vector.splice.nxv64i8(<vscale x 64 x i8>, <vscale x 64 x i8>, i32)
-
-declare <vscale x 1 x i16> @llvm.vector.splice.nxv1i16(<vscale x 1 x i16>, <vscale x 1 x i16>, i32)
-declare <vscale x 2 x i16> @llvm.vector.splice.nxv2i16(<vscale x 2 x i16>, <vscale x 2 x i16>, i32)
-declare <vscale x 4 x i16> @llvm.vector.splice.nxv4i16(<vscale x 4 x i16>, <vscale x 4 x i16>, i32)
-declare <vscale x 8 x i16> @llvm.vector.splice.nxv8i16(<vscale x 8 x i16>, <vscale x 8 x i16>, i32)
-declare <vscale x 16 x i16> @llvm.vector.splice.nxv16i16(<vscale x 16 x i16>, <vscale x 16 x i16>, i32)
-declare <vscale x 32 x i16> @llvm.vector.splice.nxv32i16(<vscale x 32 x i16>, <vscale x 32 x i16>, i32)
-declare <vscale x 64 x i16> @llvm.vector.splice.nxv64i16(<vscale x 64 x i16>, <vscale x 64 x i16>, i32)
-
-declare <vscale x 1 x i32> @llvm.vector.splice.nxv1i32(<vscale x 1 x i32>, <vscale x 1 x i32>, i32)
-declare <vscale x 2 x i32> @llvm.vector.splice.nxv2i32(<vscale x 2 x i32>, <vscale x 2 x i32>, i32)
-declare <vscale x 4 x i32> @llvm.vector.splice.nxv4i32(<vscale x 4 x i32>, <vscale x 4 x i32>, i32)
-declare <vscale x 8 x i32> @llvm.vector.splice.nxv8i32(<vscale x 8 x i32>, <vscale x 8 x i32>, i32)
-declare <vscale x 16 x i32> @llvm.vector.splice.nxv16i32(<vscale x 16 x i32>, <vscale x 16 x i32>, i32)
-declare <vscale x 32 x i32> @llvm.vector.splice.nxv32i32(<vscale x 32 x i32>, <vscale x 32 x i32>, i32)
-declare <vscale x 64 x i32> @llvm.vector.splice.nxv64i32(<vscale x 64 x i32>, <vscale x 64 x i32>, i32)
-
-declare <vscale x 1 x i64> @llvm.vector.splice.nxv1i64(<vscale x 1 x i64>, <vscale x 1 x i64>, i32)
-declare <vscale x 2 x i64> @llvm.vector.splice.nxv2i64(<vscale x 2 x i64>, <vscale x 2 x i64>, i32)
-declare <vscale x 4 x i64> @llvm.vector.splice.nxv4i64(<vscale x 4 x i64>, <vscale x 4 x i64>, i32)
-declare <vscale x 8 x i64> @llvm.vector.splice.nxv8i64(<vscale x 8 x i64>, <vscale x 8 x i64>, i32)
-declare <vscale x 16 x i64> @llvm.vector.splice.nxv16i64(<vscale x 16 x i64>, <vscale x 16 x i64>, i32)
-declare <vscale x 32 x i64> @llvm.vector.splice.nxv32i64(<vscale x 32 x i64>, <vscale x 32 x i64>, i32)
-declare <vscale x 64 x i64> @llvm.vector.splice.nxv64i64(<vscale x 64 x i64>, <vscale x 64 x i64>, i32)
-
-declare <vscale x 1 x half> @llvm.vector.splice.nxv1f16(<vscale x 1 x half>, <vscale x 1 x half>, i32)
-declare <vscale x 2 x half> @llvm.vector.splice.nxv2f16(<vscale x 2 x half>, <vscale x 2 x half>, i32)
-declare <vscale x 4 x half> @llvm.vector.splice.nxv4f16(<vscale x 4 x half>, <vscale x 4 x half>, i32)
-declare <vscale x 8 x half> @llvm.vector.splice.nxv8f16(<vscale x 8 x half>, <vscale x 8 x half>, i32)
-declare <vscale x 16 x half> @llvm.vector.splice.nxv16f16(<vscale x 16 x half>, <vscale x 16 x half>, i32)
-declare <vscale x 32 x half> @llvm.vector.splice.nxv32f16(<vscale x 32 x half>, <vscale x 32 x half>, i32)
-declare <vscale x 64 x half> @llvm.vector.splice.nxv64f16(<vscale x 64 x half>, <vscale x 64 x half>, i32)
-
-declare <vscale x 1 x float> @llvm.vector.splice.nxv1f32(<vscale x 1 x float>, <vscale x 1 x float>, i32)
-declare <vscale x 2 x float> @llvm.vector.splice.nxv2f32(<vscale x 2 x float>, <vscale x 2 x float>, i32)
-declare <vscale x 4 x float> @llvm.vector.splice.nxv4f32(<vscale x 4 x float>, <vscale x 4 x float>, i32)
-declare <vscale x 8 x float> @llvm.vector.splice.nxv8f32(<vscale x 8 x float>, <vscale x 8 x float>, i32)
-declare <vscale x 16 x float> @llvm.vector.splice.nxv16f32(<vscale x 16 x float>, <vscale x 16 x float>, i32)
-declare <vscale x 32 x float> @llvm.vector.splice.nxv32f32(<vscale x 32 x float>, <vscale x 32 x float>, i32)
-declare <vscale x 64 x float> @llvm.vector.splice.nxv64f32(<vscale x 64 x float>, <vscale x 64 x float>, i32)
-
-declare <vscale x 1 x double> @llvm.vector.splice.nxv1f64(<vscale x 1 x double>, <vscale x 1 x double>, i32)
-declare <vscale x 2 x double> @llvm.vector.splice.nxv2f64(<vscale x 2 x double>, <vscale x 2 x double>, i32)
-declare <vscale x 4 x double> @llvm.vector.splice.nxv4f64(<vscale x 4 x double>, <vscale x 4 x double>, i32)
-declare <vscale x 8 x double> @llvm.vector.splice.nxv8f64(<vscale x 8 x double>, <vscale x 8 x double>, i32)
-declare <vscale x 16 x double> @llvm.vector.splice.nxv16f64(<vscale x 16 x double>, <vscale x 16 x double>, i32)
-declare <vscale x 32 x double> @llvm.vector.splice.nxv32f64(<vscale x 32 x double>, <vscale x 32 x double>, i32)
-declare <vscale x 64 x double> @llvm.vector.splice.nxv64f64(<vscale x 64 x double>, <vscale x 64 x double>, i32)