[RISCV][GISEL] Regbank select for scalable G_SELECT

1 files changed, 558 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/RISCV/GlobalISel/regbankselect/rvv/select.mir b/llvm/test/CodeGen/RISCV/GlobalISel/regbankselect/rvv/select.mir
new file mode 100644
index 0000000..4dc077a
--- /dev/null
+++ b/llvm/test/CodeGen/RISCV/GlobalISel/regbankselect/rvv/select.mir
@@ -0,0 +1,558 @@
+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
+# RUN: llc -mtriple=riscv32 -mattr=+m,+v -run-pass=regbankselect \
+# RUN:   -disable-gisel-legality-check -simplify-mir -verify-machineinstrs %s \
+# RUN:   -o - | FileCheck -check-prefix=RV32I %s
+# RUN: llc -mtriple=riscv64 -mattr=+m,+v -run-pass=regbankselect \
+# RUN:   -disable-gisel-legality-check -simplify-mir -verify-machineinstrs %s \
+# RUN:   -o - | FileCheck -check-prefix=RV64I %s
+
+---
+name:            select_nxv1i8
+legalized:       true
+tracksRegLiveness: true
+body:             |
+  bb.0.entry:
+    ; RV32I-LABEL: name: select_nxv1i8
+    ; RV32I: [[DEF:%[0-9]+]]:vrb(<vscale x 1 x s1>) = G_IMPLICIT_DEF
+    ; RV32I-NEXT: [[DEF1:%[0-9]+]]:vrb(<vscale x 1 x s8>) = G_IMPLICIT_DEF
+    ; RV32I-NEXT: [[SELECT:%[0-9]+]]:vrb(<vscale x 1 x s8>) = G_SELECT [[DEF]](<vscale x 1 x s1>), [[DEF1]], [[DEF1]]
+    ; RV32I-NEXT: $v8 = COPY [[SELECT]](<vscale x 1 x s8>)
+    ; RV32I-NEXT: PseudoRET implicit $v8
+    ;
+    ; RV64I-LABEL: name: select_nxv1i8
+    ; RV64I: [[DEF:%[0-9]+]]:vrb(<vscale x 1 x s1>) = G_IMPLICIT_DEF
+    ; RV64I-NEXT: [[DEF1:%[0-9]+]]:vrb(<vscale x 1 x s8>) = G_IMPLICIT_DEF
+    ; RV64I-NEXT: [[SELECT:%[0-9]+]]:vrb(<vscale x 1 x s8>) = G_SELECT [[DEF]](<vscale x 1 x s1>), [[DEF1]], [[DEF1]]
+    ; RV64I-NEXT: $v8 = COPY [[SELECT]](<vscale x 1 x s8>)
+    ; RV64I-NEXT: PseudoRET implicit $v8
+    %1:_(<vscale x 1 x s1>) = G_IMPLICIT_DEF
+    %2:_(<vscale x 1 x s8>) = G_IMPLICIT_DEF
+    %0:_(<vscale x 1 x s8>) = G_SELECT %1(<vscale x 1 x s1>), %2(<vscale x 1 x s8>), %2(<vscale x 1 x s8>)
+    $v8 = COPY %0(<vscale x 1 x s8>)
+    PseudoRET implicit $v8
+...
+---
+name:            select_nxv2i8
+legalized:       true
+tracksRegLiveness: true
+body:             |
+  bb.0.entry:
+    ; RV32I-LABEL: name: select_nxv2i8
+    ; RV32I: [[DEF:%[0-9]+]]:vrb(<vscale x 2 x s1>) = G_IMPLICIT_DEF
+    ; RV32I-NEXT: [[DEF1:%[0-9]+]]:vrb(<vscale x 2 x s8>) = G_IMPLICIT_DEF
+    ; RV32I-NEXT: [[SELECT:%[0-9]+]]:vrb(<vscale x 2 x s8>) = G_SELECT [[DEF]](<vscale x 2 x s1>), [[DEF1]], [[DEF1]]
+    ; RV32I-NEXT: $v8 = COPY [[SELECT]](<vscale x 2 x s8>)
+    ; RV32I-NEXT: PseudoRET implicit $v8
+    ;
+    ; RV64I-LABEL: name: select_nxv2i8
+    ; RV64I: [[DEF:%[0-9]+]]:vrb(<vscale x 2 x s1>) = G_IMPLICIT_DEF
+    ; RV64I-NEXT: [[DEF1:%[0-9]+]]:vrb(<vscale x 2 x s8>) = G_IMPLICIT_DEF
+    ; RV64I-NEXT: [[SELECT:%[0-9]+]]:vrb(<vscale x 2 x s8>) = G_SELECT [[DEF]](<vscale x 2 x s1>), [[DEF1]], [[DEF1]]
+    ; RV64I-NEXT: $v8 = COPY [[SELECT]](<vscale x 2 x s8>)
+    ; RV64I-NEXT: PseudoRET implicit $v8
+    %1:_(<vscale x 2 x s1>) = G_IMPLICIT_DEF
+    %2:_(<vscale x 2 x s8>) = G_IMPLICIT_DEF
+    %0:_(<vscale x 2 x s8>) = G_SELECT %1(<vscale x 2 x s1>), %2(<vscale x 2 x s8>), %2(<vscale x 2 x s8>)
+    $v8 = COPY %0(<vscale x 2 x s8>)
+    PseudoRET implicit $v8
+...
+---
+name:            select_nxv4i8
+legalized:       true
+tracksRegLiveness: true
+body:             |
+  bb.0.entry:
+    ; RV32I-LABEL: name: select_nxv4i8
+    ; RV32I: [[DEF:%[0-9]+]]:vrb(<vscale x 4 x s1>) = G_IMPLICIT_DEF
+    ; RV32I-NEXT: [[DEF1:%[0-9]+]]:vrb(<vscale x 4 x s8>) = G_IMPLICIT_DEF
+    ; RV32I-NEXT: [[SELECT:%[0-9]+]]:vrb(<vscale x 4 x s8>) = G_SELECT [[DEF]](<vscale x 4 x s1>), [[DEF1]], [[DEF1]]
+    ; RV32I-NEXT: $v8 = COPY [[SELECT]](<vscale x 4 x s8>)
+    ; RV32I-NEXT: PseudoRET implicit $v8
+    ;
+    ; RV64I-LABEL: name: select_nxv4i8
+    ; RV64I: [[DEF:%[0-9]+]]:vrb(<vscale x 4 x s1>) = G_IMPLICIT_DEF
+    ; RV64I-NEXT: [[DEF1:%[0-9]+]]:vrb(<vscale x 4 x s8>) = G_IMPLICIT_DEF
+    ; RV64I-NEXT: [[SELECT:%[0-9]+]]:vrb(<vscale x 4 x s8>) = G_SELECT [[DEF]](<vscale x 4 x s1>), [[DEF1]], [[DEF1]]
+    ; RV64I-NEXT: $v8 = COPY [[SELECT]](<vscale x 4 x s8>)
+    ; RV64I-NEXT: PseudoRET implicit $v8
+    %1:_(<vscale x 4 x s1>) = G_IMPLICIT_DEF
+    %2:_(<vscale x 4 x s8>) = G_IMPLICIT_DEF
+    %0:_(<vscale x 4 x s8>) = G_SELECT %1(<vscale x 4 x s1>), %2(<vscale x 4 x s8>), %2(<vscale x 4 x s8>)
+    $v8 = COPY %0(<vscale x 4 x s8>)
+    PseudoRET implicit $v8
+...
+---
+name:            select_nxv8i8
+legalized:       true
+tracksRegLiveness: true
+body:             |
+  bb.0.entry:
+    ; RV32I-LABEL: name: select_nxv8i8
+    ; RV32I: [[DEF:%[0-9]+]]:vrb(<vscale x 8 x s1>) = G_IMPLICIT_DEF
+    ; RV32I-NEXT: [[DEF1:%[0-9]+]]:vrb(<vscale x 8 x s8>) = G_IMPLICIT_DEF
+    ; RV32I-NEXT: [[SELECT:%[0-9]+]]:vrb(<vscale x 8 x s8>) = G_SELECT [[DEF]](<vscale x 8 x s1>), [[DEF1]], [[DEF1]]
+    ; RV32I-NEXT: $v8 = COPY [[SELECT]](<vscale x 8 x s8>)
+    ; RV32I-NEXT: PseudoRET implicit $v8
+    ;
+    ; RV64I-LABEL: name: select_nxv8i8
+    ; RV64I: [[DEF:%[0-9]+]]:vrb(<vscale x 8 x s1>) = G_IMPLICIT_DEF
+    ; RV64I-NEXT: [[DEF1:%[0-9]+]]:vrb(<vscale x 8 x s8>) = G_IMPLICIT_DEF
+    ; RV64I-NEXT: [[SELECT:%[0-9]+]]:vrb(<vscale x 8 x s8>) = G_SELECT [[DEF]](<vscale x 8 x s1>), [[DEF1]], [[DEF1]]
+    ; RV64I-NEXT: $v8 = COPY [[SELECT]](<vscale x 8 x s8>)
+    ; RV64I-NEXT: PseudoRET implicit $v8
+    %1:_(<vscale x 8 x s1>) = G_IMPLICIT_DEF
+    %2:_(<vscale x 8 x s8>) = G_IMPLICIT_DEF
+    %0:_(<vscale x 8 x s8>) = G_SELECT %1(<vscale x 8 x s1>), %2(<vscale x 8 x s8>), %2(<vscale x 8 x s8>)
+    $v8 = COPY %0(<vscale x 8 x s8>)
+    PseudoRET implicit $v8
+...
+---
+name:            select_nxv16i8
+legalized:       true
+tracksRegLiveness: true
+body:             |
+  bb.0.entry:
+    ; RV32I-LABEL: name: select_nxv16i8
+    ; RV32I: [[DEF:%[0-9]+]]:vrb(<vscale x 16 x s1>) = G_IMPLICIT_DEF
+    ; RV32I-NEXT: [[DEF1:%[0-9]+]]:vrb(<vscale x 16 x s8>) = G_IMPLICIT_DEF
+    ; RV32I-NEXT: [[SELECT:%[0-9]+]]:vrb(<vscale x 16 x s8>) = G_SELECT [[DEF]](<vscale x 16 x s1>), [[DEF1]], [[DEF1]]
+    ; RV32I-NEXT: $v8m2 = COPY [[SELECT]](<vscale x 16 x s8>)
+    ; RV32I-NEXT: PseudoRET implicit $v8m2
+    ;
+    ; RV64I-LABEL: name: select_nxv16i8
+    ; RV64I: [[DEF:%[0-9]+]]:vrb(<vscale x 16 x s1>) = G_IMPLICIT_DEF
+    ; RV64I-NEXT: [[DEF1:%[0-9]+]]:vrb(<vscale x 16 x s8>) = G_IMPLICIT_DEF
+    ; RV64I-NEXT: [[SELECT:%[0-9]+]]:vrb(<vscale x 16 x s8>) = G_SELECT [[DEF]](<vscale x 16 x s1>), [[DEF1]], [[DEF1]]
+    ; RV64I-NEXT: $v8m2 = COPY [[SELECT]](<vscale x 16 x s8>)
+    ; RV64I-NEXT: PseudoRET implicit $v8m2
+    %1:_(<vscale x 16 x s1>) = G_IMPLICIT_DEF
+    %2:_(<vscale x 16 x s8>) = G_IMPLICIT_DEF
+    %0:_(<vscale x 16 x s8>) = G_SELECT %1(<vscale x 16 x s1>), %2(<vscale x 16 x s8>), %2(<vscale x 16 x s8>)
+    $v8m2 = COPY %0(<vscale x 16 x s8>)
+    PseudoRET implicit $v8m2
+...
+---
+name:            select_nxv32i8
+legalized:       true
+tracksRegLiveness: true
+body:             |
+  bb.0.entry:
+    ; RV32I-LABEL: name: select_nxv32i8
+    ; RV32I: [[DEF:%[0-9]+]]:vrb(<vscale x 32 x s1>) = G_IMPLICIT_DEF
+    ; RV32I-NEXT: [[DEF1:%[0-9]+]]:vrb(<vscale x 32 x s8>) = G_IMPLICIT_DEF
+    ; RV32I-NEXT: [[SELECT:%[0-9]+]]:vrb(<vscale x 32 x s8>) = G_SELECT [[DEF]](<vscale x 32 x s1>), [[DEF1]], [[DEF1]]
+    ; RV32I-NEXT: $v8m4 = COPY [[SELECT]](<vscale x 32 x s8>)
+    ; RV32I-NEXT: PseudoRET implicit $v8m4
+    ;
+    ; RV64I-LABEL: name: select_nxv32i8
+    ; RV64I: [[DEF:%[0-9]+]]:vrb(<vscale x 32 x s1>) = G_IMPLICIT_DEF
+    ; RV64I-NEXT: [[DEF1:%[0-9]+]]:vrb(<vscale x 32 x s8>) = G_IMPLICIT_DEF
+    ; RV64I-NEXT: [[SELECT:%[0-9]+]]:vrb(<vscale x 32 x s8>) = G_SELECT [[DEF]](<vscale x 32 x s1>), [[DEF1]], [[DEF1]]
+    ; RV64I-NEXT: $v8m4 = COPY [[SELECT]](<vscale x 32 x s8>)
+    ; RV64I-NEXT: PseudoRET implicit $v8m4
+    %1:_(<vscale x 32 x s1>) = G_IMPLICIT_DEF
+    %2:_(<vscale x 32 x s8>) = G_IMPLICIT_DEF
+    %0:_(<vscale x 32 x s8>) = G_SELECT %1(<vscale x 32 x s1>), %2(<vscale x 32 x s8>), %2(<vscale x 32 x s8>)
+    $v8m4 = COPY %0(<vscale x 32 x s8>)
+    PseudoRET implicit $v8m4
+...
+---
+name:            select_nxv64i8
+legalized:       true
+tracksRegLiveness: true
+body:             |
+  bb.0.entry:
+    ; RV32I-LABEL: name: select_nxv64i8
+    ; RV32I: [[DEF:%[0-9]+]]:vrb(<vscale x 64 x s1>) = G_IMPLICIT_DEF
+    ; RV32I-NEXT: [[DEF1:%[0-9]+]]:vrb(<vscale x 64 x s8>) = G_IMPLICIT_DEF
+    ; RV32I-NEXT: [[SELECT:%[0-9]+]]:vrb(<vscale x 64 x s8>) = G_SELECT [[DEF]](<vscale x 64 x s1>), [[DEF1]], [[DEF1]]
+    ; RV32I-NEXT: $v8m8 = COPY [[SELECT]](<vscale x 64 x s8>)
+    ; RV32I-NEXT: PseudoRET implicit $v8m8
+    ;
+    ; RV64I-LABEL: name: select_nxv64i8
+    ; RV64I: [[DEF:%[0-9]+]]:vrb(<vscale x 64 x s1>) = G_IMPLICIT_DEF
+    ; RV64I-NEXT: [[DEF1:%[0-9]+]]:vrb(<vscale x 64 x s8>) = G_IMPLICIT_DEF
+    ; RV64I-NEXT: [[SELECT:%[0-9]+]]:vrb(<vscale x 64 x s8>) = G_SELECT [[DEF]](<vscale x 64 x s1>), [[DEF1]], [[DEF1]]
+    ; RV64I-NEXT: $v8m8 = COPY [[SELECT]](<vscale x 64 x s8>)
+    ; RV64I-NEXT: PseudoRET implicit $v8m8
+    %1:_(<vscale x 64 x s1>) = G_IMPLICIT_DEF
+    %2:_(<vscale x 64 x s8>) = G_IMPLICIT_DEF
+    %0:_(<vscale x 64 x s8>) = G_SELECT %1(<vscale x 64 x s1>), %2(<vscale x 64 x s8>), %2(<vscale x 64 x s8>)
+    $v8m8 = COPY %0(<vscale x 64 x s8>)
+    PseudoRET implicit $v8m8
+...
+---
+name:            select_nxv1i16
+legalized:       true
+tracksRegLiveness: true
+body:             |
+  bb.0.entry:
+    ; RV32I-LABEL: name: select_nxv1i16
+    ; RV32I: [[DEF:%[0-9]+]]:vrb(<vscale x 1 x s1>) = G_IMPLICIT_DEF
+    ; RV32I-NEXT: [[DEF1:%[0-9]+]]:vrb(<vscale x 1 x s16>) = G_IMPLICIT_DEF
+    ; RV32I-NEXT: [[SELECT:%[0-9]+]]:vrb(<vscale x 1 x s16>) = G_SELECT [[DEF]](<vscale x 1 x s1>), [[DEF1]], [[DEF1]]
+    ; RV32I-NEXT: $v8 = COPY [[SELECT]](<vscale x 1 x s16>)
+    ; RV32I-NEXT: PseudoRET implicit $v8
+    ;
+    ; RV64I-LABEL: name: select_nxv1i16
+    ; RV64I: [[DEF:%[0-9]+]]:vrb(<vscale x 1 x s1>) = G_IMPLICIT_DEF
+    ; RV64I-NEXT: [[DEF1:%[0-9]+]]:vrb(<vscale x 1 x s16>) = G_IMPLICIT_DEF
+    ; RV64I-NEXT: [[SELECT:%[0-9]+]]:vrb(<vscale x 1 x s16>) = G_SELECT [[DEF]](<vscale x 1 x s1>), [[DEF1]], [[DEF1]]
+    ; RV64I-NEXT: $v8 = COPY [[SELECT]](<vscale x 1 x s16>)
+    ; RV64I-NEXT: PseudoRET implicit $v8
+    %1:_(<vscale x 1 x s1>) = G_IMPLICIT_DEF
+    %2:_(<vscale x 1 x s16>) = G_IMPLICIT_DEF
+    %0:_(<vscale x 1 x s16>) = G_SELECT %1(<vscale x 1 x s1>), %2(<vscale x 1 x s16>), %2(<vscale x 1 x s16>)
+    $v8 = COPY %0(<vscale x 1 x s16>)
+    PseudoRET implicit $v8
+...
+---
+name:            select_nxv2i16
+legalized:       true
+tracksRegLiveness: true
+body:             |
+  bb.0.entry:
+    ; RV32I-LABEL: name: select_nxv2i16
+    ; RV32I: [[DEF:%[0-9]+]]:vrb(<vscale x 2 x s1>) = G_IMPLICIT_DEF
+    ; RV32I-NEXT: [[DEF1:%[0-9]+]]:vrb(<vscale x 2 x s16>) = G_IMPLICIT_DEF
+    ; RV32I-NEXT: [[SELECT:%[0-9]+]]:vrb(<vscale x 2 x s16>) = G_SELECT [[DEF]](<vscale x 2 x s1>), [[DEF1]], [[DEF1]]
+    ; RV32I-NEXT: $v8 = COPY [[SELECT]](<vscale x 2 x s16>)
+    ; RV32I-NEXT: PseudoRET implicit $v8
+    ;
+    ; RV64I-LABEL: name: select_nxv2i16
+    ; RV64I: [[DEF:%[0-9]+]]:vrb(<vscale x 2 x s1>) = G_IMPLICIT_DEF
+    ; RV64I-NEXT: [[DEF1:%[0-9]+]]:vrb(<vscale x 2 x s16>) = G_IMPLICIT_DEF
+    ; RV64I-NEXT: [[SELECT:%[0-9]+]]:vrb(<vscale x 2 x s16>) = G_SELECT [[DEF]](<vscale x 2 x s1>), [[DEF1]], [[DEF1]]
+    ; RV64I-NEXT: $v8 = COPY [[SELECT]](<vscale x 2 x s16>)
+    ; RV64I-NEXT: PseudoRET implicit $v8
+    %1:_(<vscale x 2 x s1>) = G_IMPLICIT_DEF
+    %2:_(<vscale x 2 x s16>) = G_IMPLICIT_DEF
+    %0:_(<vscale x 2 x s16>) = G_SELECT %1(<vscale x 2 x s1>), %2(<vscale x 2 x s16>), %2(<vscale x 2 x s16>)
+    $v8 = COPY %0(<vscale x 2 x s16>)
+    PseudoRET implicit $v8
+...
+---
+name:            select_nxv4i16
+legalized:       true
+tracksRegLiveness: true
+body:             |
+  bb.0.entry:
+    ; RV32I-LABEL: name: select_nxv4i16
+    ; RV32I: [[DEF:%[0-9]+]]:vrb(<vscale x 4 x s1>) = G_IMPLICIT_DEF
+    ; RV32I-NEXT: [[DEF1:%[0-9]+]]:vrb(<vscale x 4 x s16>) = G_IMPLICIT_DEF
+    ; RV32I-NEXT: [[SELECT:%[0-9]+]]:vrb(<vscale x 4 x s16>) = G_SELECT [[DEF]](<vscale x 4 x s1>), [[DEF1]], [[DEF1]]
+    ; RV32I-NEXT: $v8 = COPY [[SELECT]](<vscale x 4 x s16>)
+    ; RV32I-NEXT: PseudoRET implicit $v8
+    ;
+    ; RV64I-LABEL: name: select_nxv4i16
+    ; RV64I: [[DEF:%[0-9]+]]:vrb(<vscale x 4 x s1>) = G_IMPLICIT_DEF
+    ; RV64I-NEXT: [[DEF1:%[0-9]+]]:vrb(<vscale x 4 x s16>) = G_IMPLICIT_DEF
+    ; RV64I-NEXT: [[SELECT:%[0-9]+]]:vrb(<vscale x 4 x s16>) = G_SELECT [[DEF]](<vscale x 4 x s1>), [[DEF1]], [[DEF1]]
+    ; RV64I-NEXT: $v8 = COPY [[SELECT]](<vscale x 4 x s16>)
+    ; RV64I-NEXT: PseudoRET implicit $v8
+    %1:_(<vscale x 4 x s1>) = G_IMPLICIT_DEF
+    %2:_(<vscale x 4 x s16>) = G_IMPLICIT_DEF
+    %0:_(<vscale x 4 x s16>) = G_SELECT %1(<vscale x 4 x s1>), %2(<vscale x 4 x s16>), %2(<vscale x 4 x s16>)
+    $v8 = COPY %0(<vscale x 4 x s16>)
+    PseudoRET implicit $v8
+...
+---
+name:            select_nxv8i16
+legalized:       true
+tracksRegLiveness: true
+body:             |
+  bb.0.entry:
+    ; RV32I-LABEL: name: select_nxv8i16
+    ; RV32I: [[DEF:%[0-9]+]]:vrb(<vscale x 8 x s1>) = G_IMPLICIT_DEF
+    ; RV32I-NEXT: [[DEF1:%[0-9]+]]:vrb(<vscale x 8 x s16>) = G_IMPLICIT_DEF
+    ; RV32I-NEXT: [[SELECT:%[0-9]+]]:vrb(<vscale x 8 x s16>) = G_SELECT [[DEF]](<vscale x 8 x s1>), [[DEF1]], [[DEF1]]
+    ; RV32I-NEXT: $v8m2 = COPY [[SELECT]](<vscale x 8 x s16>)
+    ; RV32I-NEXT: PseudoRET implicit $v8m2
+    ;
+    ; RV64I-LABEL: name: select_nxv8i16
+    ; RV64I: [[DEF:%[0-9]+]]:vrb(<vscale x 8 x s1>) = G_IMPLICIT_DEF
+    ; RV64I-NEXT: [[DEF1:%[0-9]+]]:vrb(<vscale x 8 x s16>) = G_IMPLICIT_DEF
+    ; RV64I-NEXT: [[SELECT:%[0-9]+]]:vrb(<vscale x 8 x s16>) = G_SELECT [[DEF]](<vscale x 8 x s1>), [[DEF1]], [[DEF1]]
+    ; RV64I-NEXT: $v8m2 = COPY [[SELECT]](<vscale x 8 x s16>)
+    ; RV64I-NEXT: PseudoRET implicit $v8m2
+    %1:_(<vscale x 8 x s1>) = G_IMPLICIT_DEF
+    %2:_(<vscale x 8 x s16>) = G_IMPLICIT_DEF
+    %0:_(<vscale x 8 x s16>) = G_SELECT %1(<vscale x 8 x s1>), %2(<vscale x 8 x s16>), %2(<vscale x 8 x s16>)
+    $v8m2 = COPY %0(<vscale x 8 x s16>)
+    PseudoRET implicit $v8m2
+...
+---
+name:            select_nxv16i16
+legalized:       true
+tracksRegLiveness: true
+body:             |
+  bb.0.entry:
+    ; RV32I-LABEL: name: select_nxv16i16
+    ; RV32I: [[DEF:%[0-9]+]]:vrb(<vscale x 16 x s1>) = G_IMPLICIT_DEF
+    ; RV32I-NEXT: [[DEF1:%[0-9]+]]:vrb(<vscale x 16 x s16>) = G_IMPLICIT_DEF
+    ; RV32I-NEXT: [[SELECT:%[0-9]+]]:vrb(<vscale x 16 x s16>) = G_SELECT [[DEF]](<vscale x 16 x s1>), [[DEF1]], [[DEF1]]
+    ; RV32I-NEXT: $v8m4 = COPY [[SELECT]](<vscale x 16 x s16>)
+    ; RV32I-NEXT: PseudoRET implicit $v8m4
+    ;
+    ; RV64I-LABEL: name: select_nxv16i16
+    ; RV64I: [[DEF:%[0-9]+]]:vrb(<vscale x 16 x s1>) = G_IMPLICIT_DEF
+    ; RV64I-NEXT: [[DEF1:%[0-9]+]]:vrb(<vscale x 16 x s16>) = G_IMPLICIT_DEF
+    ; RV64I-NEXT: [[SELECT:%[0-9]+]]:vrb(<vscale x 16 x s16>) = G_SELECT [[DEF]](<vscale x 16 x s1>), [[DEF1]], [[DEF1]]
+    ; RV64I-NEXT: $v8m4 = COPY [[SELECT]](<vscale x 16 x s16>)
+    ; RV64I-NEXT: PseudoRET implicit $v8m4
+    %1:_(<vscale x 16 x s1>) = G_IMPLICIT_DEF
+    %2:_(<vscale x 16 x s16>) = G_IMPLICIT_DEF
+    %0:_(<vscale x 16 x s16>) = G_SELECT %1(<vscale x 16 x s1>), %2(<vscale x 16 x s16>), %2(<vscale x 16 x s16>)
+    $v8m4 = COPY %0(<vscale x 16 x s16>)
+    PseudoRET implicit $v8m4
+...
+---
+name:            select_nxv32i16
+legalized:       true
+tracksRegLiveness: true
+body:             |
+  bb.0.entry:
+    ; RV32I-LABEL: name: select_nxv32i16
+    ; RV32I: [[DEF:%[0-9]+]]:vrb(<vscale x 32 x s1>) = G_IMPLICIT_DEF
+    ; RV32I-NEXT: [[DEF1:%[0-9]+]]:vrb(<vscale x 32 x s16>) = G_IMPLICIT_DEF
+    ; RV32I-NEXT: [[SELECT:%[0-9]+]]:vrb(<vscale x 32 x s16>) = G_SELECT [[DEF]](<vscale x 32 x s1>), [[DEF1]], [[DEF1]]
+    ; RV32I-NEXT: $v8m8 = COPY [[SELECT]](<vscale x 32 x s16>)
+    ; RV32I-NEXT: PseudoRET implicit $v8m8
+    ;
+    ; RV64I-LABEL: name: select_nxv32i16
+    ; RV64I: [[DEF:%[0-9]+]]:vrb(<vscale x 32 x s1>) = G_IMPLICIT_DEF
+    ; RV64I-NEXT: [[DEF1:%[0-9]+]]:vrb(<vscale x 32 x s16>) = G_IMPLICIT_DEF
+    ; RV64I-NEXT: [[SELECT:%[0-9]+]]:vrb(<vscale x 32 x s16>) = G_SELECT [[DEF]](<vscale x 32 x s1>), [[DEF1]], [[DEF1]]
+    ; RV64I-NEXT: $v8m8 = COPY [[SELECT]](<vscale x 32 x s16>)
+    ; RV64I-NEXT: PseudoRET implicit $v8m8
+    %1:_(<vscale x 32 x s1>) = G_IMPLICIT_DEF
+    %2:_(<vscale x 32 x s16>) = G_IMPLICIT_DEF
+    %0:_(<vscale x 32 x s16>) = G_SELECT %1(<vscale x 32 x s1>), %2(<vscale x 32 x s16>), %2(<vscale x 32 x s16>)
+    $v8m8 = COPY %0(<vscale x 32 x s16>)
+    PseudoRET implicit $v8m8
+...
+---
+name:            select_nxv1i32
+legalized:       true
+tracksRegLiveness: true
+body:             |
+  bb.0.entry:
+    ; RV32I-LABEL: name: select_nxv1i32
+    ; RV32I: [[DEF:%[0-9]+]]:vrb(<vscale x 1 x s1>) = G_IMPLICIT_DEF
+    ; RV32I-NEXT: [[DEF1:%[0-9]+]]:vrb(<vscale x 1 x s32>) = G_IMPLICIT_DEF
+    ; RV32I-NEXT: [[SELECT:%[0-9]+]]:vrb(<vscale x 1 x s32>) = G_SELECT [[DEF]](<vscale x 1 x s1>), [[DEF1]], [[DEF1]]
+    ; RV32I-NEXT: $v8 = COPY [[SELECT]](<vscale x 1 x s32>)
+    ; RV32I-NEXT: PseudoRET implicit $v8
+    ;
+    ; RV64I-LABEL: name: select_nxv1i32
+    ; RV64I: [[DEF:%[0-9]+]]:vrb(<vscale x 1 x s1>) = G_IMPLICIT_DEF
+    ; RV64I-NEXT: [[DEF1:%[0-9]+]]:vrb(<vscale x 1 x s32>) = G_IMPLICIT_DEF
+    ; RV64I-NEXT: [[SELECT:%[0-9]+]]:vrb(<vscale x 1 x s32>) = G_SELECT [[DEF]](<vscale x 1 x s1>), [[DEF1]], [[DEF1]]
+    ; RV64I-NEXT: $v8 = COPY [[SELECT]](<vscale x 1 x s32>)
+    ; RV64I-NEXT: PseudoRET implicit $v8
+    %1:_(<vscale x 1 x s1>) = G_IMPLICIT_DEF
+    %2:_(<vscale x 1 x s32>) = G_IMPLICIT_DEF
+    %0:_(<vscale x 1 x s32>) = G_SELECT %1(<vscale x 1 x s1>), %2(<vscale x 1 x s32>), %2(<vscale x 1 x s32>)
+    $v8 = COPY %0(<vscale x 1 x s32>)
+    PseudoRET implicit $v8
+...
+---
+name:            select_nxv2i32
+legalized:       true
+tracksRegLiveness: true
+body:             |
+  bb.0.entry:
+    ; RV32I-LABEL: name: select_nxv2i32
+    ; RV32I: [[DEF:%[0-9]+]]:vrb(<vscale x 2 x s1>) = G_IMPLICIT_DEF
+    ; RV32I-NEXT: [[DEF1:%[0-9]+]]:vrb(<vscale x 2 x s32>) = G_IMPLICIT_DEF
+    ; RV32I-NEXT: [[SELECT:%[0-9]+]]:vrb(<vscale x 2 x s32>) = G_SELECT [[DEF]](<vscale x 2 x s1>), [[DEF1]], [[DEF1]]
+    ; RV32I-NEXT: $v8 = COPY [[SELECT]](<vscale x 2 x s32>)
+    ; RV32I-NEXT: PseudoRET implicit $v8
+    ;
+    ; RV64I-LABEL: name: select_nxv2i32
+    ; RV64I: [[DEF:%[0-9]+]]:vrb(<vscale x 2 x s1>) = G_IMPLICIT_DEF
+    ; RV64I-NEXT: [[DEF1:%[0-9]+]]:vrb(<vscale x 2 x s32>) = G_IMPLICIT_DEF
+    ; RV64I-NEXT: [[SELECT:%[0-9]+]]:vrb(<vscale x 2 x s32>) = G_SELECT [[DEF]](<vscale x 2 x s1>), [[DEF1]], [[DEF1]]
+    ; RV64I-NEXT: $v8 = COPY [[SELECT]](<vscale x 2 x s32>)
+    ; RV64I-NEXT: PseudoRET implicit $v8
+    %1:_(<vscale x 2 x s1>) = G_IMPLICIT_DEF
+    %2:_(<vscale x 2 x s32>) = G_IMPLICIT_DEF
+    %0:_(<vscale x 2 x s32>) = G_SELECT %1(<vscale x 2 x s1>), %2(<vscale x 2 x s32>), %2(<vscale x 2 x s32>)
+    $v8 = COPY %0(<vscale x 2 x s32>)
+    PseudoRET implicit $v8
+...
+---
+name:            select_nxv4i32
+legalized:       true
+tracksRegLiveness: true
+body:             |
+  bb.0.entry:
+    ; RV32I-LABEL: name: select_nxv4i32
+    ; RV32I: [[DEF:%[0-9]+]]:vrb(<vscale x 4 x s1>) = G_IMPLICIT_DEF
+    ; RV32I-NEXT: [[DEF1:%[0-9]+]]:vrb(<vscale x 4 x s32>) = G_IMPLICIT_DEF
+    ; RV32I-NEXT: [[SELECT:%[0-9]+]]:vrb(<vscale x 4 x s32>) = G_SELECT [[DEF]](<vscale x 4 x s1>), [[DEF1]], [[DEF1]]
+    ; RV32I-NEXT: $v8m2 = COPY [[SELECT]](<vscale x 4 x s32>)
+    ; RV32I-NEXT: PseudoRET implicit $v8m2
+    ;
+    ; RV64I-LABEL: name: select_nxv4i32
+    ; RV64I: [[DEF:%[0-9]+]]:vrb(<vscale x 4 x s1>) = G_IMPLICIT_DEF
+    ; RV64I-NEXT: [[DEF1:%[0-9]+]]:vrb(<vscale x 4 x s32>) = G_IMPLICIT_DEF
+    ; RV64I-NEXT: [[SELECT:%[0-9]+]]:vrb(<vscale x 4 x s32>) = G_SELECT [[DEF]](<vscale x 4 x s1>), [[DEF1]], [[DEF1]]
+    ; RV64I-NEXT: $v8m2 = COPY [[SELECT]](<vscale x 4 x s32>)
+    ; RV64I-NEXT: PseudoRET implicit $v8m2
+    %1:_(<vscale x 4 x s1>) = G_IMPLICIT_DEF
+    %2:_(<vscale x 4 x s32>) = G_IMPLICIT_DEF
+    %0:_(<vscale x 4 x s32>) = G_SELECT %1(<vscale x 4 x s1>), %2(<vscale x 4 x s32>), %2(<vscale x 4 x s32>)
+    $v8m2 = COPY %0(<vscale x 4 x s32>)
+    PseudoRET implicit $v8m2
+...
+---
+name:            select_nxv8i32
+legalized:       true
+tracksRegLiveness: true
+body:             |
+  bb.0.entry:
+    ; RV32I-LABEL: name: select_nxv8i32
+    ; RV32I: [[DEF:%[0-9]+]]:vrb(<vscale x 8 x s1>) = G_IMPLICIT_DEF
+    ; RV32I-NEXT: [[DEF1:%[0-9]+]]:vrb(<vscale x 8 x s32>) = G_IMPLICIT_DEF
+    ; RV32I-NEXT: [[SELECT:%[0-9]+]]:vrb(<vscale x 8 x s32>) = G_SELECT [[DEF]](<vscale x 8 x s1>), [[DEF1]], [[DEF1]]
+    ; RV32I-NEXT: $v8m4 = COPY [[SELECT]](<vscale x 8 x s32>)
+    ; RV32I-NEXT: PseudoRET implicit $v8m4
+    ;
+    ; RV64I-LABEL: name: select_nxv8i32
+    ; RV64I: [[DEF:%[0-9]+]]:vrb(<vscale x 8 x s1>) = G_IMPLICIT_DEF
+    ; RV64I-NEXT: [[DEF1:%[0-9]+]]:vrb(<vscale x 8 x s32>) = G_IMPLICIT_DEF
+    ; RV64I-NEXT: [[SELECT:%[0-9]+]]:vrb(<vscale x 8 x s32>) = G_SELECT [[DEF]](<vscale x 8 x s1>), [[DEF1]], [[DEF1]]
+    ; RV64I-NEXT: $v8m4 = COPY [[SELECT]](<vscale x 8 x s32>)
+    ; RV64I-NEXT: PseudoRET implicit $v8m4
+    %1:_(<vscale x 8 x s1>) = G_IMPLICIT_DEF
+    %2:_(<vscale x 8 x s32>) = G_IMPLICIT_DEF
+    %0:_(<vscale x 8 x s32>) = G_SELECT %1(<vscale x 8 x s1>), %2(<vscale x 8 x s32>), %2(<vscale x 8 x s32>)
+    $v8m4 = COPY %0(<vscale x 8 x s32>)
+    PseudoRET implicit $v8m4
+...
+---
+name:            select_nxv16i32
+legalized:       true
+tracksRegLiveness: true
+body:             |
+  bb.0.entry:
+    ; RV32I-LABEL: name: select_nxv16i32
+    ; RV32I: [[DEF:%[0-9]+]]:vrb(<vscale x 16 x s1>) = G_IMPLICIT_DEF
+    ; RV32I-NEXT: [[DEF1:%[0-9]+]]:vrb(<vscale x 16 x s32>) = G_IMPLICIT_DEF
+    ; RV32I-NEXT: [[SELECT:%[0-9]+]]:vrb(<vscale x 16 x s32>) = G_SELECT [[DEF]](<vscale x 16 x s1>), [[DEF1]], [[DEF1]]
+    ; RV32I-NEXT: $v8m8 = COPY [[SELECT]](<vscale x 16 x s32>)
+    ; RV32I-NEXT: PseudoRET implicit $v8m8
+    ;
+    ; RV64I-LABEL: name: select_nxv16i32
+    ; RV64I: [[DEF:%[0-9]+]]:vrb(<vscale x 16 x s1>) = G_IMPLICIT_DEF
+    ; RV64I-NEXT: [[DEF1:%[0-9]+]]:vrb(<vscale x 16 x s32>) = G_IMPLICIT_DEF
+    ; RV64I-NEXT: [[SELECT:%[0-9]+]]:vrb(<vscale x 16 x s32>) = G_SELECT [[DEF]](<vscale x 16 x s1>), [[DEF1]], [[DEF1]]
+    ; RV64I-NEXT: $v8m8 = COPY [[SELECT]](<vscale x 16 x s32>)
+    ; RV64I-NEXT: PseudoRET implicit $v8m8
+    %1:_(<vscale x 16 x s1>) = G_IMPLICIT_DEF
+    %2:_(<vscale x 16 x s32>) = G_IMPLICIT_DEF
+    %0:_(<vscale x 16 x s32>) = G_SELECT %1(<vscale x 16 x s1>), %2(<vscale x 16 x s32>), %2(<vscale x 16 x s32>)
+    $v8m8 = COPY %0(<vscale x 16 x s32>)
+    PseudoRET implicit $v8m8
+...
+---
+name:            select_nxv1i64
+legalized:       true
+tracksRegLiveness: true
+body:             |
+  bb.0.entry:
+    ; RV32I-LABEL: name: select_nxv1i64
+    ; RV32I: [[DEF:%[0-9]+]]:vrb(<vscale x 1 x s1>) = G_IMPLICIT_DEF
+    ; RV32I-NEXT: [[DEF1:%[0-9]+]]:vrb(<vscale x 1 x s64>) = G_IMPLICIT_DEF
+    ; RV32I-NEXT: [[SELECT:%[0-9]+]]:vrb(<vscale x 1 x s64>) = G_SELECT [[DEF]](<vscale x 1 x s1>), [[DEF1]], [[DEF1]]
+    ; RV32I-NEXT: $v8 = COPY [[SELECT]](<vscale x 1 x s64>)
+    ; RV32I-NEXT: PseudoRET implicit $v8
+    ;
+    ; RV64I-LABEL: name: select_nxv1i64
+    ; RV64I: [[DEF:%[0-9]+]]:vrb(<vscale x 1 x s1>) = G_IMPLICIT_DEF
+    ; RV64I-NEXT: [[DEF1:%[0-9]+]]:vrb(<vscale x 1 x s64>) = G_IMPLICIT_DEF
+    ; RV64I-NEXT: [[SELECT:%[0-9]+]]:vrb(<vscale x 1 x s64>) = G_SELECT [[DEF]](<vscale x 1 x s1>), [[DEF1]], [[DEF1]]
+    ; RV64I-NEXT: $v8 = COPY [[SELECT]](<vscale x 1 x s64>)
+    ; RV64I-NEXT: PseudoRET implicit $v8
+    %1:_(<vscale x 1 x s1>) = G_IMPLICIT_DEF
+    %2:_(<vscale x 1 x s64>) = G_IMPLICIT_DEF
+    %0:_(<vscale x 1 x s64>) = G_SELECT %1(<vscale x 1 x s1>), %2(<vscale x 1 x s64>), %2(<vscale x 1 x s64>)
+    $v8 = COPY %0(<vscale x 1 x s64>)
+    PseudoRET implicit $v8
+...
+---
+name:            select_nxv2i64
+legalized:       true
+tracksRegLiveness: true
+body:             |
+  bb.0.entry:
+    ; RV32I-LABEL: name: select_nxv2i64
+    ; RV32I: [[DEF:%[0-9]+]]:vrb(<vscale x 2 x s1>) = G_IMPLICIT_DEF
+    ; RV32I-NEXT: [[DEF1:%[0-9]+]]:vrb(<vscale x 2 x s64>) = G_IMPLICIT_DEF
+    ; RV32I-NEXT: [[SELECT:%[0-9]+]]:vrb(<vscale x 2 x s64>) = G_SELECT [[DEF]](<vscale x 2 x s1>), [[DEF1]], [[DEF1]]
+    ; RV32I-NEXT: $v8m2 = COPY [[SELECT]](<vscale x 2 x s64>)
+    ; RV32I-NEXT: PseudoRET implicit $v8m2
+    ;
+    ; RV64I-LABEL: name: select_nxv2i64
+    ; RV64I: [[DEF:%[0-9]+]]:vrb(<vscale x 2 x s1>) = G_IMPLICIT_DEF
+    ; RV64I-NEXT: [[DEF1:%[0-9]+]]:vrb(<vscale x 2 x s64>) = G_IMPLICIT_DEF
+    ; RV64I-NEXT: [[SELECT:%[0-9]+]]:vrb(<vscale x 2 x s64>) = G_SELECT [[DEF]](<vscale x 2 x s1>), [[DEF1]], [[DEF1]]
+    ; RV64I-NEXT: $v8m2 = COPY [[SELECT]](<vscale x 2 x s64>)
+    ; RV64I-NEXT: PseudoRET implicit $v8m2
+    %1:_(<vscale x 2 x s1>) = G_IMPLICIT_DEF
+    %2:_(<vscale x 2 x s64>) = G_IMPLICIT_DEF
+    %0:_(<vscale x 2 x s64>) = G_SELECT %1(<vscale x 2 x s1>), %2(<vscale x 2 x s64>), %2(<vscale x 2 x s64>)
+    $v8m2 = COPY %0(<vscale x 2 x s64>)
+    PseudoRET implicit $v8m2
+...
+---
+name:            select_nxv4i64
+legalized:       true
+tracksRegLiveness: true
+body:             |
+  bb.0.entry:
+    ; RV32I-LABEL: name: select_nxv4i64
+    ; RV32I: [[DEF:%[0-9]+]]:vrb(<vscale x 4 x s1>) = G_IMPLICIT_DEF
+    ; RV32I-NEXT: [[DEF1:%[0-9]+]]:vrb(<vscale x 4 x s64>) = G_IMPLICIT_DEF
+    ; RV32I-NEXT: [[SELECT:%[0-9]+]]:vrb(<vscale x 4 x s64>) = G_SELECT [[DEF]](<vscale x 4 x s1>), [[DEF1]], [[DEF1]]
+    ; RV32I-NEXT: $v8m4 = COPY [[SELECT]](<vscale x 4 x s64>)
+    ; RV32I-NEXT: PseudoRET implicit $v8m4
+    ;
+    ; RV64I-LABEL: name: select_nxv4i64
+    ; RV64I: [[DEF:%[0-9]+]]:vrb(<vscale x 4 x s1>) = G_IMPLICIT_DEF
+    ; RV64I-NEXT: [[DEF1:%[0-9]+]]:vrb(<vscale x 4 x s64>) = G_IMPLICIT_DEF
+    ; RV64I-NEXT: [[SELECT:%[0-9]+]]:vrb(<vscale x 4 x s64>) = G_SELECT [[DEF]](<vscale x 4 x s1>), [[DEF1]], [[DEF1]]
+    ; RV64I-NEXT: $v8m4 = COPY [[SELECT]](<vscale x 4 x s64>)
+    ; RV64I-NEXT: PseudoRET implicit $v8m4
+    %1:_(<vscale x 4 x s1>) = G_IMPLICIT_DEF
+    %2:_(<vscale x 4 x s64>) = G_IMPLICIT_DEF
+    %0:_(<vscale x 4 x s64>) = G_SELECT %1(<vscale x 4 x s1>), %2(<vscale x 4 x s64>), %2(<vscale x 4 x s64>)
+    $v8m4 = COPY %0(<vscale x 4 x s64>)
+    PseudoRET implicit $v8m4
+...
+---
+name:            select_nxv8i64
+legalized:       true
+tracksRegLiveness: true
+body:             |
+  bb.0.entry:
+    ; RV32I-LABEL: name: select_nxv8i64
+    ; RV32I: [[DEF:%[0-9]+]]:vrb(<vscale x 8 x s1>) = G_IMPLICIT_DEF
+    ; RV32I-NEXT: [[DEF1:%[0-9]+]]:vrb(<vscale x 8 x s64>) = G_IMPLICIT_DEF
+    ; RV32I-NEXT: [[SELECT:%[0-9]+]]:vrb(<vscale x 8 x s64>) = G_SELECT [[DEF]](<vscale x 8 x s1>), [[DEF1]], [[DEF1]]
+    ; RV32I-NEXT: $v8m8 = COPY [[SELECT]](<vscale x 8 x s64>)
+    ; RV32I-NEXT: PseudoRET implicit $v8m8
+    ;
+    ; RV64I-LABEL: name: select_nxv8i64
+    ; RV64I: [[DEF:%[0-9]+]]:vrb(<vscale x 8 x s1>) = G_IMPLICIT_DEF
+    ; RV64I-NEXT: [[DEF1:%[0-9]+]]:vrb(<vscale x 8 x s64>) = G_IMPLICIT_DEF
+    ; RV64I-NEXT: [[SELECT:%[0-9]+]]:vrb(<vscale x 8 x s64>) = G_SELECT [[DEF]](<vscale x 8 x s1>), [[DEF1]], [[DEF1]]
+    ; RV64I-NEXT: $v8m8 = COPY [[SELECT]](<vscale x 8 x s64>)
+    ; RV64I-NEXT: PseudoRET implicit $v8m8
+    %1:_(<vscale x 8 x s1>) = G_IMPLICIT_DEF
+    %2:_(<vscale x 8 x s64>) = G_IMPLICIT_DEF
+    %0:_(<vscale x 8 x s64>) = G_SELECT %1(<vscale x 8 x s1>), %2(<vscale x 8 x s64>), %2(<vscale x 8 x s64>)
+    $v8m8 = COPY %0(<vscale x 8 x s64>)
+    PseudoRET implicit $v8m8
+...