[llvm] [RISCV][GISEL] regbankselect for G_SPLAT_VECTOR (PR #110744)

via llvm-commits llvm-commits at lists.llvm.org
Tue Oct 1 14:39:06 PDT 2024


llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-backend-risc-v

Author: Michael Maitland (michaelmaitland)

<details>
<summary>Changes</summary>



---

Patch is 36.31 KiB, truncated to 20.00 KiB below, full version: https://github.com/llvm/llvm-project/pull/110744.diff


2 Files Affected:

- (added) llvm/test/CodeGen/RISCV/GlobalISel/regbankselect/rvv/splatvector-rv32.mir (+401) 
- (added) llvm/test/CodeGen/RISCV/GlobalISel/regbankselect/rvv/splatvector-rv64.mir (+587) 


``````````diff
diff --git a/llvm/test/CodeGen/RISCV/GlobalISel/regbankselect/rvv/splatvector-rv32.mir b/llvm/test/CodeGen/RISCV/GlobalISel/regbankselect/rvv/splatvector-rv32.mir
new file mode 100644
index 00000000000000..003445713c62c5
--- /dev/null
+++ b/llvm/test/CodeGen/RISCV/GlobalISel/regbankselect/rvv/splatvector-rv32.mir
@@ -0,0 +1,401 @@
+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 5
+# RUN: llc -mtriple=riscv32 -mattr=+m,+v -run-pass=regbankselect \
+# RUN:   -disable-gisel-legality-check -simplify-mir -verify-machineinstrs %s \
+# RUN:   -o - | FileCheck %s
+
+---
+name:            splat_zero_nxv1i8
+legalized:       true
+regBankSelected: false
+body:             |
+  bb.1:
+    ; CHECK-LABEL: name: splat_zero_nxv1i8
+    ; CHECK: [[C:%[0-9]+]]:gprb(s32) = G_CONSTANT i32 0
+    ; CHECK-NEXT: [[SPLAT_VECTOR:%[0-9]+]]:vrb(<vscale x 1 x s8>) = G_SPLAT_VECTOR [[C]](s32)
+    ; CHECK-NEXT: $v8 = COPY [[SPLAT_VECTOR]](<vscale x 1 x s8>)
+    ; CHECK-NEXT: PseudoRET implicit $v8
+    %3:_(s32) = G_CONSTANT i32 0
+    %0:_(<vscale x 1 x s8>) = G_SPLAT_VECTOR %3(s32)
+    $v8 = COPY %0(<vscale x 1 x s8>)
+    PseudoRET implicit $v8
+
+...
+---
+name:            splat_zero_nxv2i8
+legalized:       true
+regBankSelected: false
+body:             |
+  bb.1:
+    ; CHECK-LABEL: name: splat_zero_nxv2i8
+    ; CHECK: [[C:%[0-9]+]]:gprb(s32) = G_CONSTANT i32 0
+    ; CHECK-NEXT: [[SPLAT_VECTOR:%[0-9]+]]:vrb(<vscale x 2 x s8>) = G_SPLAT_VECTOR [[C]](s32)
+    ; CHECK-NEXT: $v8 = COPY [[SPLAT_VECTOR]](<vscale x 2 x s8>)
+    ; CHECK-NEXT: PseudoRET implicit $v8
+    %3:_(s32) = G_CONSTANT i32 0
+    %0:_(<vscale x 2 x s8>) = G_SPLAT_VECTOR %3(s32)
+    $v8 = COPY %0(<vscale x 2 x s8>)
+    PseudoRET implicit $v8
+
+...
+---
+name:            splat_zero_nxv4i8
+legalized:       true
+regBankSelected: false
+body:             |
+  bb.1:
+    ; CHECK-LABEL: name: splat_zero_nxv4i8
+    ; CHECK: [[C:%[0-9]+]]:gprb(s32) = G_CONSTANT i32 0
+    ; CHECK-NEXT: [[SPLAT_VECTOR:%[0-9]+]]:vrb(<vscale x 4 x s8>) = G_SPLAT_VECTOR [[C]](s32)
+    ; CHECK-NEXT: $v8 = COPY [[SPLAT_VECTOR]](<vscale x 4 x s8>)
+    ; CHECK-NEXT: PseudoRET implicit $v8
+    %3:_(s32) = G_CONSTANT i32 0
+    %0:_(<vscale x 4 x s8>) = G_SPLAT_VECTOR %3(s32)
+    $v8 = COPY %0(<vscale x 4 x s8>)
+    PseudoRET implicit $v8
+
+...
+---
+name:            splat_zero_nxv8i8
+legalized:       true
+regBankSelected: false
+body:             |
+  bb.1:
+    ; CHECK-LABEL: name: splat_zero_nxv8i8
+    ; CHECK: [[C:%[0-9]+]]:gprb(s32) = G_CONSTANT i32 0
+    ; CHECK-NEXT: [[SPLAT_VECTOR:%[0-9]+]]:vrb(<vscale x 8 x s8>) = G_SPLAT_VECTOR [[C]](s32)
+    ; CHECK-NEXT: $v8 = COPY [[SPLAT_VECTOR]](<vscale x 8 x s8>)
+    ; CHECK-NEXT: PseudoRET implicit $v8
+    %3:_(s32) = G_CONSTANT i32 0
+    %0:_(<vscale x 8 x s8>) = G_SPLAT_VECTOR %3(s32)
+    $v8 = COPY %0(<vscale x 8 x s8>)
+    PseudoRET implicit $v8
+
+...
+---
+name:            splat_zero_nxv16i8
+legalized:       true
+regBankSelected: false
+body:             |
+  bb.1:
+    ; CHECK-LABEL: name: splat_zero_nxv16i8
+    ; CHECK: [[C:%[0-9]+]]:gprb(s32) = G_CONSTANT i32 0
+    ; CHECK-NEXT: [[SPLAT_VECTOR:%[0-9]+]]:vrb(<vscale x 16 x s8>) = G_SPLAT_VECTOR [[C]](s32)
+    ; CHECK-NEXT: $v8m2 = COPY [[SPLAT_VECTOR]](<vscale x 16 x s8>)
+    ; CHECK-NEXT: PseudoRET implicit $v8m2
+    %3:_(s32) = G_CONSTANT i32 0
+    %0:_(<vscale x 16 x s8>) = G_SPLAT_VECTOR %3(s32)
+    $v8m2 = COPY %0(<vscale x 16 x s8>)
+    PseudoRET implicit $v8m2
+
+...
+---
+name:            splat_zero_nxv32i8
+legalized:       true
+regBankSelected: false
+body:             |
+  bb.1:
+    ; CHECK-LABEL: name: splat_zero_nxv32i8
+    ; CHECK: [[C:%[0-9]+]]:gprb(s32) = G_CONSTANT i32 0
+    ; CHECK-NEXT: [[SPLAT_VECTOR:%[0-9]+]]:vrb(<vscale x 32 x s8>) = G_SPLAT_VECTOR [[C]](s32)
+    ; CHECK-NEXT: $v8m4 = COPY [[SPLAT_VECTOR]](<vscale x 32 x s8>)
+    ; CHECK-NEXT: PseudoRET implicit $v8m4
+    %3:_(s32) = G_CONSTANT i32 0
+    %0:_(<vscale x 32 x s8>) = G_SPLAT_VECTOR %3(s32)
+    $v8m4 = COPY %0(<vscale x 32 x s8>)
+    PseudoRET implicit $v8m4
+
+...
+---
+name:            splat_zero_nxv64i8
+legalized:       true
+regBankSelected: false
+body:             |
+  bb.1:
+    ; CHECK-LABEL: name: splat_zero_nxv64i8
+    ; CHECK: [[C:%[0-9]+]]:gprb(s32) = G_CONSTANT i32 0
+    ; CHECK-NEXT: [[SPLAT_VECTOR:%[0-9]+]]:vrb(<vscale x 64 x s8>) = G_SPLAT_VECTOR [[C]](s32)
+    ; CHECK-NEXT: $v8m8 = COPY [[SPLAT_VECTOR]](<vscale x 64 x s8>)
+    ; CHECK-NEXT: PseudoRET implicit $v8m8
+    %3:_(s32) = G_CONSTANT i32 0
+    %0:_(<vscale x 64 x s8>) = G_SPLAT_VECTOR %3(s32)
+    $v8m8 = COPY %0(<vscale x 64 x s8>)
+    PseudoRET implicit $v8m8
+
+...
+---
+name:            splat_zero_nxv1i16
+legalized:       true
+regBankSelected: false
+body:             |
+  bb.1:
+    ; CHECK-LABEL: name: splat_zero_nxv1i16
+    ; CHECK: [[C:%[0-9]+]]:gprb(s32) = G_CONSTANT i32 0
+    ; CHECK-NEXT: [[SPLAT_VECTOR:%[0-9]+]]:vrb(<vscale x 1 x s16>) = G_SPLAT_VECTOR [[C]](s32)
+    ; CHECK-NEXT: $v8 = COPY [[SPLAT_VECTOR]](<vscale x 1 x s16>)
+    ; CHECK-NEXT: PseudoRET implicit $v8
+    %3:_(s32) = G_CONSTANT i32 0
+    %0:_(<vscale x 1 x s16>) = G_SPLAT_VECTOR %3(s32)
+    $v8 = COPY %0(<vscale x 1 x s16>)
+    PseudoRET implicit $v8
+
+...
+---
+name:            splat_zero_nxv2i16
+legalized:       true
+regBankSelected: false
+body:             |
+  bb.1:
+    ; CHECK-LABEL: name: splat_zero_nxv2i16
+    ; CHECK: [[C:%[0-9]+]]:gprb(s32) = G_CONSTANT i32 0
+    ; CHECK-NEXT: [[SPLAT_VECTOR:%[0-9]+]]:vrb(<vscale x 2 x s16>) = G_SPLAT_VECTOR [[C]](s32)
+    ; CHECK-NEXT: $v8 = COPY [[SPLAT_VECTOR]](<vscale x 2 x s16>)
+    ; CHECK-NEXT: PseudoRET implicit $v8
+    %3:_(s32) = G_CONSTANT i32 0
+    %0:_(<vscale x 2 x s16>) = G_SPLAT_VECTOR %3(s32)
+    $v8 = COPY %0(<vscale x 2 x s16>)
+    PseudoRET implicit $v8
+
+...
+---
+name:            splat_zero_nxv4i16
+legalized:       true
+regBankSelected: false
+body:             |
+  bb.1:
+    ; CHECK-LABEL: name: splat_zero_nxv4i16
+    ; CHECK: [[C:%[0-9]+]]:gprb(s32) = G_CONSTANT i32 0
+    ; CHECK-NEXT: [[SPLAT_VECTOR:%[0-9]+]]:vrb(<vscale x 4 x s16>) = G_SPLAT_VECTOR [[C]](s32)
+    ; CHECK-NEXT: $v8 = COPY [[SPLAT_VECTOR]](<vscale x 4 x s16>)
+    ; CHECK-NEXT: PseudoRET implicit $v8
+    %3:_(s32) = G_CONSTANT i32 0
+    %0:_(<vscale x 4 x s16>) = G_SPLAT_VECTOR %3(s32)
+    $v8 = COPY %0(<vscale x 4 x s16>)
+    PseudoRET implicit $v8
+
+...
+---
+name:            splat_zero_nxv8i16
+legalized:       true
+regBankSelected: false
+body:             |
+  bb.1:
+    ; CHECK-LABEL: name: splat_zero_nxv8i16
+    ; CHECK: [[C:%[0-9]+]]:gprb(s32) = G_CONSTANT i32 0
+    ; CHECK-NEXT: [[SPLAT_VECTOR:%[0-9]+]]:vrb(<vscale x 8 x s16>) = G_SPLAT_VECTOR [[C]](s32)
+    ; CHECK-NEXT: $v8m2 = COPY [[SPLAT_VECTOR]](<vscale x 8 x s16>)
+    ; CHECK-NEXT: PseudoRET implicit $v8m2
+    %3:_(s32) = G_CONSTANT i32 0
+    %0:_(<vscale x 8 x s16>) = G_SPLAT_VECTOR %3(s32)
+    $v8m2 = COPY %0(<vscale x 8 x s16>)
+    PseudoRET implicit $v8m2
+
+...
+---
+name:            splat_zero_nxv16i16
+legalized:       true
+regBankSelected: false
+body:             |
+  bb.1:
+    ; CHECK-LABEL: name: splat_zero_nxv16i16
+    ; CHECK: [[C:%[0-9]+]]:gprb(s32) = G_CONSTANT i32 0
+    ; CHECK-NEXT: [[SPLAT_VECTOR:%[0-9]+]]:vrb(<vscale x 16 x s16>) = G_SPLAT_VECTOR [[C]](s32)
+    ; CHECK-NEXT: $v8m4 = COPY [[SPLAT_VECTOR]](<vscale x 16 x s16>)
+    ; CHECK-NEXT: PseudoRET implicit $v8m4
+    %3:_(s32) = G_CONSTANT i32 0
+    %0:_(<vscale x 16 x s16>) = G_SPLAT_VECTOR %3(s32)
+    $v8m4 = COPY %0(<vscale x 16 x s16>)
+    PseudoRET implicit $v8m4
+
+...
+---
+name:            splat_zero_nxv32i16
+legalized:       true
+regBankSelected: false
+body:             |
+  bb.1:
+    ; CHECK-LABEL: name: splat_zero_nxv32i16
+    ; CHECK: [[C:%[0-9]+]]:gprb(s32) = G_CONSTANT i32 0
+    ; CHECK-NEXT: [[SPLAT_VECTOR:%[0-9]+]]:vrb(<vscale x 32 x s16>) = G_SPLAT_VECTOR [[C]](s32)
+    ; CHECK-NEXT: $v8m8 = COPY [[SPLAT_VECTOR]](<vscale x 32 x s16>)
+    ; CHECK-NEXT: PseudoRET implicit $v8m8
+    %3:_(s32) = G_CONSTANT i32 0
+    %0:_(<vscale x 32 x s16>) = G_SPLAT_VECTOR %3(s32)
+    $v8m8 = COPY %0(<vscale x 32 x s16>)
+    PseudoRET implicit $v8m8
+
+...
+---
+name:            splat_zero_nxv1i32
+legalized:       true
+regBankSelected: false
+body:             |
+  bb.1:
+    ; CHECK-LABEL: name: splat_zero_nxv1i32
+    ; CHECK: [[C:%[0-9]+]]:gprb(s32) = G_CONSTANT i32 0
+    ; CHECK-NEXT: [[SPLAT_VECTOR:%[0-9]+]]:vrb(<vscale x 1 x s32>) = G_SPLAT_VECTOR [[C]](s32)
+    ; CHECK-NEXT: $v8 = COPY [[SPLAT_VECTOR]](<vscale x 1 x s32>)
+    ; CHECK-NEXT: PseudoRET implicit $v8
+    %1:_(s32) = G_CONSTANT i32 0
+    %0:_(<vscale x 1 x s32>) = G_SPLAT_VECTOR %1(s32)
+    $v8 = COPY %0(<vscale x 1 x s32>)
+    PseudoRET implicit $v8
+
+...
+---
+name:            splat_zero_nxv2i32
+legalized:       true
+regBankSelected: false
+body:             |
+  bb.1:
+    ; CHECK-LABEL: name: splat_zero_nxv2i32
+    ; CHECK: [[C:%[0-9]+]]:gprb(s32) = G_CONSTANT i32 0
+    ; CHECK-NEXT: [[SPLAT_VECTOR:%[0-9]+]]:vrb(<vscale x 2 x s32>) = G_SPLAT_VECTOR [[C]](s32)
+    ; CHECK-NEXT: $v8 = COPY [[SPLAT_VECTOR]](<vscale x 2 x s32>)
+    ; CHECK-NEXT: PseudoRET implicit $v8
+    %1:_(s32) = G_CONSTANT i32 0
+    %0:_(<vscale x 2 x s32>) = G_SPLAT_VECTOR %1(s32)
+    $v8 = COPY %0(<vscale x 2 x s32>)
+    PseudoRET implicit $v8
+
+...
+---
+name:            splat_zero_nxv4i32
+legalized:       true
+regBankSelected: false
+body:             |
+  bb.1:
+    ; CHECK-LABEL: name: splat_zero_nxv4i32
+    ; CHECK: [[C:%[0-9]+]]:gprb(s32) = G_CONSTANT i32 0
+    ; CHECK-NEXT: [[SPLAT_VECTOR:%[0-9]+]]:vrb(<vscale x 4 x s32>) = G_SPLAT_VECTOR [[C]](s32)
+    ; CHECK-NEXT: $v8m2 = COPY [[SPLAT_VECTOR]](<vscale x 4 x s32>)
+    ; CHECK-NEXT: PseudoRET implicit $v8m2
+    %1:_(s32) = G_CONSTANT i32 0
+    %0:_(<vscale x 4 x s32>) = G_SPLAT_VECTOR %1(s32)
+    $v8m2 = COPY %0(<vscale x 4 x s32>)
+    PseudoRET implicit $v8m2
+
+...
+---
+name:            splat_zero_nxv8i32
+legalized:       true
+regBankSelected: false
+body:             |
+  bb.1:
+    ; CHECK-LABEL: name: splat_zero_nxv8i32
+    ; CHECK: [[C:%[0-9]+]]:gprb(s32) = G_CONSTANT i32 0
+    ; CHECK-NEXT: [[SPLAT_VECTOR:%[0-9]+]]:vrb(<vscale x 8 x s32>) = G_SPLAT_VECTOR [[C]](s32)
+    ; CHECK-NEXT: $v8m4 = COPY [[SPLAT_VECTOR]](<vscale x 8 x s32>)
+    ; CHECK-NEXT: PseudoRET implicit $v8m4
+    %1:_(s32) = G_CONSTANT i32 0
+    %0:_(<vscale x 8 x s32>) = G_SPLAT_VECTOR %1(s32)
+    $v8m4 = COPY %0(<vscale x 8 x s32>)
+    PseudoRET implicit $v8m4
+
+...
+---
+name:            splat_zero_nxv16i32
+legalized:       true
+regBankSelected: false
+body:             |
+  bb.1:
+    ; CHECK-LABEL: name: splat_zero_nxv16i32
+    ; CHECK: [[C:%[0-9]+]]:gprb(s32) = G_CONSTANT i32 0
+    ; CHECK-NEXT: [[SPLAT_VECTOR:%[0-9]+]]:vrb(<vscale x 16 x s32>) = G_SPLAT_VECTOR [[C]](s32)
+    ; CHECK-NEXT: $v8m8 = COPY [[SPLAT_VECTOR]](<vscale x 16 x s32>)
+    ; CHECK-NEXT: PseudoRET implicit $v8m8
+    %1:_(s32) = G_CONSTANT i32 0
+    %0:_(<vscale x 16 x s32>) = G_SPLAT_VECTOR %1(s32)
+    $v8m8 = COPY %0(<vscale x 16 x s32>)
+    PseudoRET implicit $v8m8
+
+...
+---
+name:            splat_zero_nxv1float
+legalized:       true
+regBankSelected: false
+body:             |
+  bb.1:
+    ; CHECK-LABEL: name: splat_zero_nxv1float
+    ; CHECK: [[C:%[0-9]+]]:fprb(s32) = G_FCONSTANT float 0.000000e+00
+    ; CHECK-NEXT: [[COPY:%[0-9]+]]:gprb(s32) = COPY [[C]](s32)
+    ; CHECK-NEXT: [[SPLAT_VECTOR:%[0-9]+]]:vrb(<vscale x 1 x s32>) = G_SPLAT_VECTOR [[COPY]](s32)
+    ; CHECK-NEXT: $v8 = COPY [[SPLAT_VECTOR]](<vscale x 1 x s32>)
+    ; CHECK-NEXT: PseudoRET implicit $v8
+    %1:_(s32) = G_FCONSTANT float 0.000000e+00
+    %0:_(<vscale x 1 x s32>) = G_SPLAT_VECTOR %1(s32)
+    $v8 = COPY %0(<vscale x 1 x s32>)
+    PseudoRET implicit $v8
+
+...
+---
+name:            splat_zero_nxv2float
+legalized:       true
+regBankSelected: false
+body:             |
+  bb.1:
+    ; CHECK-LABEL: name: splat_zero_nxv2float
+    ; CHECK: [[C:%[0-9]+]]:fprb(s32) = G_FCONSTANT float 0.000000e+00
+    ; CHECK-NEXT: [[COPY:%[0-9]+]]:gprb(s32) = COPY [[C]](s32)
+    ; CHECK-NEXT: [[SPLAT_VECTOR:%[0-9]+]]:vrb(<vscale x 2 x s32>) = G_SPLAT_VECTOR [[COPY]](s32)
+    ; CHECK-NEXT: $v8 = COPY [[SPLAT_VECTOR]](<vscale x 2 x s32>)
+    ; CHECK-NEXT: PseudoRET implicit $v8
+    %1:_(s32) = G_FCONSTANT float 0.000000e+00
+    %0:_(<vscale x 2 x s32>) = G_SPLAT_VECTOR %1(s32)
+    $v8 = COPY %0(<vscale x 2 x s32>)
+    PseudoRET implicit $v8
+
+...
+---
+name:            splat_zero_nxv4float
+legalized:       true
+regBankSelected: false
+body:             |
+  bb.1:
+    ; CHECK-LABEL: name: splat_zero_nxv4float
+    ; CHECK: [[C:%[0-9]+]]:fprb(s32) = G_FCONSTANT float 0.000000e+00
+    ; CHECK-NEXT: [[COPY:%[0-9]+]]:gprb(s32) = COPY [[C]](s32)
+    ; CHECK-NEXT: [[SPLAT_VECTOR:%[0-9]+]]:vrb(<vscale x 4 x s32>) = G_SPLAT_VECTOR [[COPY]](s32)
+    ; CHECK-NEXT: $v8m2 = COPY [[SPLAT_VECTOR]](<vscale x 4 x s32>)
+    ; CHECK-NEXT: PseudoRET implicit $v8m2
+    %1:_(s32) = G_FCONSTANT float 0.000000e+00
+    %0:_(<vscale x 4 x s32>) = G_SPLAT_VECTOR %1(s32)
+    $v8m2 = COPY %0(<vscale x 4 x s32>)
+    PseudoRET implicit $v8m2
+
+...
+---
+name:            splat_zero_nxv8float
+legalized:       true
+regBankSelected: false
+body:             |
+  bb.1:
+    ; CHECK-LABEL: name: splat_zero_nxv8float
+    ; CHECK: [[C:%[0-9]+]]:fprb(s32) = G_FCONSTANT float 0.000000e+00
+    ; CHECK-NEXT: [[COPY:%[0-9]+]]:gprb(s32) = COPY [[C]](s32)
+    ; CHECK-NEXT: [[SPLAT_VECTOR:%[0-9]+]]:vrb(<vscale x 8 x s32>) = G_SPLAT_VECTOR [[COPY]](s32)
+    ; CHECK-NEXT: $v8m4 = COPY [[SPLAT_VECTOR]](<vscale x 8 x s32>)
+    ; CHECK-NEXT: PseudoRET implicit $v8m4
+    %1:_(s32) = G_FCONSTANT float 0.000000e+00
+    %0:_(<vscale x 8 x s32>) = G_SPLAT_VECTOR %1(s32)
+    $v8m4 = COPY %0(<vscale x 8 x s32>)
+    PseudoRET implicit $v8m4
+
+...
+---
+name:            splat_zero_nxv16float
+legalized:       true
+regBankSelected: false
+body:             |
+  bb.1:
+    ; CHECK-LABEL: name: splat_zero_nxv16float
+    ; CHECK: [[C:%[0-9]+]]:fprb(s32) = G_FCONSTANT float 0.000000e+00
+    ; CHECK-NEXT: [[COPY:%[0-9]+]]:gprb(s32) = COPY [[C]](s32)
+    ; CHECK-NEXT: [[SPLAT_VECTOR:%[0-9]+]]:vrb(<vscale x 16 x s32>) = G_SPLAT_VECTOR [[COPY]](s32)
+    ; CHECK-NEXT: $v8m8 = COPY [[SPLAT_VECTOR]](<vscale x 16 x s32>)
+    ; CHECK-NEXT: PseudoRET implicit $v8m8
+    %1:_(s32) = G_FCONSTANT float 0.000000e+00
+    %0:_(<vscale x 16 x s32>) = G_SPLAT_VECTOR %1(s32)
+    $v8m8 = COPY %0(<vscale x 16 x s32>)
+    PseudoRET implicit $v8m8
+
+...
diff --git a/llvm/test/CodeGen/RISCV/GlobalISel/regbankselect/rvv/splatvector-rv64.mir b/llvm/test/CodeGen/RISCV/GlobalISel/regbankselect/rvv/splatvector-rv64.mir
new file mode 100644
index 00000000000000..21245265210166
--- /dev/null
+++ b/llvm/test/CodeGen/RISCV/GlobalISel/regbankselect/rvv/splatvector-rv64.mir
@@ -0,0 +1,587 @@
+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 5
+# RUN: llc -mtriple=riscv64 -mattr=+m,+v -run-pass=regbankselect \
+# RUN:   -disable-gisel-legality-check -simplify-mir -verify-machineinstrs %s \
+# RUN:   -o - | FileCheck %s
+
+---
+name:            splat_zero_nxv1i8
+legalized:       true
+regBankSelected: false
+body:             |
+  bb.1:
+    ; CHECK-LABEL: name: splat_zero_nxv1i8
+    ; CHECK: [[C:%[0-9]+]]:gprb(s32) = G_CONSTANT i32 0
+    ; CHECK-NEXT: [[ANYEXT:%[0-9]+]]:gprb(s64) = G_ANYEXT [[C]](s32)
+    ; CHECK-NEXT: [[SPLAT_VECTOR:%[0-9]+]]:vrb(<vscale x 1 x s8>) = G_SPLAT_VECTOR [[ANYEXT]](s64)
+    ; CHECK-NEXT: $v8 = COPY [[SPLAT_VECTOR]](<vscale x 1 x s8>)
+    ; CHECK-NEXT: PseudoRET implicit $v8
+    %3:_(s32) = G_CONSTANT i32 0
+    %2:_(s64) = G_ANYEXT %3(s32)
+    %0:_(<vscale x 1 x s8>) = G_SPLAT_VECTOR %2(s64)
+    $v8 = COPY %0(<vscale x 1 x s8>)
+    PseudoRET implicit $v8
+
+...
+---
+name:            splat_zero_nxv2i8
+legalized:       true
+regBankSelected: false
+body:             |
+  bb.1:
+    ; CHECK-LABEL: name: splat_zero_nxv2i8
+    ; CHECK: [[C:%[0-9]+]]:gprb(s32) = G_CONSTANT i32 0
+    ; CHECK-NEXT: [[ANYEXT:%[0-9]+]]:gprb(s64) = G_ANYEXT [[C]](s32)
+    ; CHECK-NEXT: [[SPLAT_VECTOR:%[0-9]+]]:vrb(<vscale x 2 x s8>) = G_SPLAT_VECTOR [[ANYEXT]](s64)
+    ; CHECK-NEXT: $v8 = COPY [[SPLAT_VECTOR]](<vscale x 2 x s8>)
+    ; CHECK-NEXT: PseudoRET implicit $v8
+    %3:_(s32) = G_CONSTANT i32 0
+    %2:_(s64) = G_ANYEXT %3(s32)
+    %0:_(<vscale x 2 x s8>) = G_SPLAT_VECTOR %2(s64)
+    $v8 = COPY %0(<vscale x 2 x s8>)
+    PseudoRET implicit $v8
+
+...
+---
+name:            splat_zero_nxv4i8
+legalized:       true
+regBankSelected: false
+body:             |
+  bb.1:
+    ; CHECK-LABEL: name: splat_zero_nxv4i8
+    ; CHECK: [[C:%[0-9]+]]:gprb(s32) = G_CONSTANT i32 0
+    ; CHECK-NEXT: [[ANYEXT:%[0-9]+]]:gprb(s64) = G_ANYEXT [[C]](s32)
+    ; CHECK-NEXT: [[SPLAT_VECTOR:%[0-9]+]]:vrb(<vscale x 4 x s8>) = G_SPLAT_VECTOR [[ANYEXT]](s64)
+    ; CHECK-NEXT: $v8 = COPY [[SPLAT_VECTOR]](<vscale x 4 x s8>)
+    ; CHECK-NEXT: PseudoRET implicit $v8
+    %3:_(s32) = G_CONSTANT i32 0
+    %2:_(s64) = G_ANYEXT %3(s32)
+    %0:_(<vscale x 4 x s8>) = G_SPLAT_VECTOR %2(s64)
+    $v8 = COPY %0(<vscale x 4 x s8>)
+    PseudoRET implicit $v8
+
+...
+---
+name:            splat_zero_nxv8i8
+legalized:       true
+regBankSelected: false
+body:             |
+  bb.1:
+    ; CHECK-LABEL: name: splat_zero_nxv8i8
+    ; CHECK: [[C:%[0-9]+]]:gprb(s32) = G_CONSTANT i32 0
+    ; CHECK-NEXT: [[ANYEXT:%[0-9]+]]:gprb(s64) = G_ANYEXT [[C]](s32)
+    ; CHECK-NEXT: [[SPLAT_VECTOR:%[0-9]+]]:vrb(<vscale x 8 x s8>) = G_SPLAT_VECTOR [[ANYEXT]](s64)
+    ; CHECK-NEXT: $v8 = COPY [[SPLAT_VECTOR]](<vscale x 8 x s8>)
+    ; CHECK-NEXT: PseudoRET implicit $v8
+    %3:_(s32) = G_CONSTANT i32 0
+    %2:_(s64) = G_ANYEXT %3(s32)
+    %0:_(<vscale x 8 x s8>) = G_SPLAT_VECTOR %2(s64)
+    $v8 = COPY %0(<vscale x 8 x s8>)
+    PseudoRET implicit $v8
+
+...
+---
+name:            splat_zero_nxv16i8
+legalized:       true
+regBankSelected: false
+body:             |
+  bb.1:
+    ; CHECK-LABEL: name: splat_zero_nxv16i8
+    ; CHECK: [[C:%[0-9]+]]:gprb(s32) = G_CONSTANT i32 0
+    ; CHECK-NEXT: [[ANYEXT:%[0-9]+]]:gprb(s64) = G_ANYEXT [[C]](s32)
+    ; CHECK-NEXT: [[SPLAT_VECTOR:%[0-9]+]]:vrb(<vscale x 16 x s8>) = G_SPLAT_VECTOR [[ANYEXT]](s64)
+    ; CHECK-NEXT: $v8m2 = COPY [[SPLAT_VECTOR]](<vscale x 16 x s8>)
+    ; CHECK-NEXT: PseudoRET implicit $v8m2
+    %3:_(s32) = G_CONSTANT i32 0
+    %2:_(s64) = G_ANYEXT %3(s32)
+    %0:_(<vscale x 16 x s8>) = G_SPLAT_VECTOR %2(s64)
+    $v8m2 = COPY %0(<vscale x 16 x s8>)
+    PseudoRET implicit $v8m2
+
+...
+---
+name:            splat_zero_nxv32i8
+legalized:       true
+regBankSelected: false
+body:             |
+  bb.1:
+    ; CHECK-LABEL: name: splat_zero_nxv32i8
+    ; CHECK: [[C:%[0-9]+]]:gprb(s32) = G_CONSTANT i32 0
+    ; CHECK-NEXT: [[ANYEXT:%[0-9]+]]:gprb(s64) = G_ANYEXT [[C]](s32)
+    ; CHECK-NEXT: [[SPLAT_VECTOR:%[0-9]+]]:vrb(<vscale x 32 x s8>) = G_SPLAT_VECTOR [[ANYEXT]](s64)
+    ; CHECK-NEXT: $v8m4 = COPY [[SPLAT_VECTOR]](<vscale x 32 x s8>)
+    ; CHECK-NEXT: PseudoRET implicit $v8m4
+    %3:_(s32) = G_CONSTANT i32 0
+    %2:_(s64) = G_ANYEXT %3(s32)
+    %0:_(<vscale x 32 x s8>) = G_SPLAT_VECTOR %2(s64)
+    $v8m4 = COPY %0(<vscale x 32 x s8>)
+    PseudoRET implicit $v8m4
+
+...
+---
+name:            splat_zero_nxv64i8
+legalized:       true
+regBankSelected: false
+body:             |
+  bb.1:
+    ; CHECK-LABEL: name: splat_zero_nxv64i8
+    ; CHECK: [[C:%[0-9]+]]:gprb(s32) = G_CONSTANT i32 0
+    ; CHECK-NEXT: [[ANYEXT:%[0-9]+]]:gprb(s64) = G_ANYEXT [[C]](s32)
+    ; CHECK-NEXT: [[SPLAT_VECTOR:%[0-9]+]]:vrb(<vscale x 64 x s8>) = G_SPLAT_VECTOR [[ANYEXT]](s64)
+    ; CHECK-NEXT: $v8m8 = COPY [[SPLAT_VECTOR]](<vscale x 64 x s8>)
+    ; CHECK-NEXT: PseudoRET implicit $v8m8
+    %3:_(s32) = G_CONSTANT i32 0
+    %2:_(s64) = G_ANYEXT %3(s32)
+    %0:_(<vscale x 64 x s8>) = G_SPLAT_VECTOR %2(s64)
+    $v8m8 = COPY %0(<vscale x 64 x s8>)
+    PseudoRET implicit $v8m8
+
+...
+---
+name:            splat_zero_nxv1i16
+legalized:       true
+regBankSelected: false
+body:             |
+  bb.1:
+    ; CHECK-LABEL: name: splat_zero_nxv1i16
+    ; CHECK: [[C:%[0-9]+]]:gprb(s32) = G_CONSTANT i32 0
+    ...
[truncated]

``````````

</details>


https://github.com/llvm/llvm-project/pull/110744


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