fixup! demonstrate the functionality supported in selectVLOp

Author: michaelmaitland

llvm/test/CodeGen/RISCV/GlobalISel/instruction-select/rvv/fail-select-vl-badnegative.mir

@@ -0,0 +1,17 @@
+# RUN: not --crash llc -mtriple=riscv32 -mattr=+v,+m -run-pass=instruction-select \
+# RUN:   -verify-machineinstrs %s 2>&1 | FileCheck %s
+
+---
+# CHECK: LLVM ERROR: cannot select: 
+name:            bad_negative_vl
+legalized:       true
+regBankSelected: true
+tracksRegLiveness: true
+body:             |
+  bb.1:
+    %0:gprb(s32) = G_CONSTANT i32 -2
+    %1:vrb(<vscale x 1 x s1>) = G_VMCLR_VL %0(s32)
+    $v0 = COPY %1(<vscale x 1 x s1>)
+    PseudoRET implicit $v0
+...
+

llvm/test/CodeGen/RISCV/GlobalISel/instruction-select/rvv/fail-select-vl-nonconst.mir

@@ -0,0 +1,19 @@
+# RUN: not --crash llc -mtriple=riscv32 -mattr=+v,+m -run-pass=instruction-select \
+# RUN:   -verify-machineinstrs %s 2>&1 | FileCheck %s
+
+# FIXME: This should be supported in the future
+---
+name:            not_implemented_vl_nonconst
+legalized:       true
+regBankSelected: true
+tracksRegLiveness: true
+body:             |
+  bb.1:
+    liveins: $x10
+    %0:gprb(s32) = COPY $x10
+    %1:vrb(<vscale x 1 x s1>) = G_VMCLR_VL %0(s32)
+    $v0 = COPY %1(<vscale x 1 x s1>)
+    PseudoRET implicit $v0
+
+# CHECK: LLVM ERROR: cannot select
+...

llvm/test/CodeGen/RISCV/GlobalISel/instruction-select/rvv/fail-select-vl-nonzero.mir

@@ -0,0 +1,19 @@
+# RUN: not --crash llc -mtriple=riscv32 -mattr=+v,+m -run-pass=instruction-select \
+# RUN:   -verify-machineinstrs %s 2>&1 | FileCheck %s
+
+# FIXME: This should be supported in the future
+---
+name:            not_implemented_vl_nonzero
+legalized:       true
+regBankSelected: true
+tracksRegLiveness: true
+body:             |
+  bb.1:
+    %0:gprb(s32) = G_CONSTANT i32 1
+    %1:vrb(<vscale x 1 x s1>) = G_VMCLR_VL %0(s32)
+    $v0 = COPY %1(<vscale x 1 x s1>)
+    PseudoRET implicit $v0
+
+# CHECK: LLVM ERROR: cannot select
+...
+

llvm/test/CodeGen/RISCV/GlobalISel/instruction-select/rvv/fail-select-vl-zero.mir

@@ -0,0 +1,18 @@
+# RUN: not --crash llc -mtriple=riscv32 -mattr=+v,+m -run-pass=instruction-select \
+# RUN:   -verify-machineinstrs %s 2>&1 | FileCheck %s
+
+# FIXME: This should be supported in the future
+---
+# CHECK: LLVM ERROR: cannot select
+name:            not_implemented_vl0
+legalized:       true
+regBankSelected: true
+tracksRegLiveness: true
+body:             |
+  bb.1:
+    %0:gprb(s32) = G_CONSTANT i32 0
+    %1:vrb(<vscale x 1 x s1>) = G_VMCLR_VL %0(s32)
+    $v0 = COPY %1(<vscale x 1 x s1>)
+    PseudoRET implicit $v0
+
+...