llvm/test/CodeGen/RISCV/rvv/rvv-peephole-vmerge-vops.ll

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=riscv64 -mattr=+v | FileCheck %s

declare <vscale x 2 x i16> @llvm.vp.merge.nxv2i16(<vscale x 2 x i1>, <vscale x 2 x i16>, <vscale x 2 x i16>, i32)
declare <vscale x 2 x i32> @llvm.vp.merge.nxv2i32(<vscale x 2 x i1>, <vscale x 2 x i32>, <vscale x 2 x i32>, i32)
declare <vscale x 2 x float> @llvm.vp.merge.nxv2f32(<vscale x 2 x i1>, <vscale x 2 x float>, <vscale x 2 x float>, i32)
declare <vscale x 2 x double> @llvm.vp.merge.nxv2f64(<vscale x 2 x i1>, <vscale x 2 x double>, <vscale x 2 x double>, i32)

; Test binary operator with vp.merge and vp.smax.
declare <vscale x 2 x i32> @llvm.vp.add.nxv2i32(<vscale x 2 x i32>, <vscale x 2 x i32>, <vscale x 2 x i1>, i32)
define <vscale x 2 x i32> @vpmerge_vpadd(<vscale x 2 x i32> %passthru, <vscale x 2 x i32> %x, <vscale x 2 x i32> %y, <vscale x 2 x i1> %m, i32 zeroext %vl) {
; CHECK-LABEL: vpmerge_vpadd:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, tu, mu
; CHECK-NEXT:    vadd.vv v8, v9, v10, v0.t
; CHECK-NEXT:    ret
  %a = call <vscale x 2 x i32> @llvm.vp.add.nxv2i32(<vscale x 2 x i32> %x, <vscale x 2 x i32> %y, <vscale x 2 x i1> splat (i1 -1), i32 %vl)
  %b = call <vscale x 2 x i32> @llvm.vp.merge.nxv2i32(<vscale x 2 x i1> %m, <vscale x 2 x i32> %a, <vscale x 2 x i32> %passthru, i32 %vl)
  ret <vscale x 2 x i32> %b
}

; Test glued node of merge should not be deleted.
declare <vscale x 2 x i1> @llvm.vp.icmp.nxv2i32(<vscale x 2 x i32>, <vscale x 2 x i32>, metadata, <vscale x 2 x i1>, i32)
define <vscale x 2 x i32> @vpmerge_vpadd2(<vscale x 2 x i32> %passthru, <vscale x 2 x i32> %x, <vscale x 2 x i32> %y, i32 zeroext %vl) {
; CHECK-LABEL: vpmerge_vpadd2:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, ta, ma
; CHECK-NEXT:    vmseq.vv v0, v9, v10
; CHECK-NEXT:    vsetvli zero, zero, e32, m1, tu, mu
; CHECK-NEXT:    vadd.vv v8, v9, v10, v0.t
; CHECK-NEXT:    ret
  %a = call <vscale x 2 x i32> @llvm.vp.add.nxv2i32(<vscale x 2 x i32> %x, <vscale x 2 x i32> %y, <vscale x 2 x i1> splat (i1 -1), i32 %vl)
  %m = call <vscale x 2 x i1> @llvm.vp.icmp.nxv2i32(<vscale x 2 x i32> %x, <vscale x 2 x i32> %y, metadata !"eq", <vscale x 2 x i1> splat (i1 -1), i32 %vl)
  %b = call <vscale x 2 x i32> @llvm.vp.merge.nxv2i32(<vscale x 2 x i1> %m, <vscale x 2 x i32> %a, <vscale x 2 x i32> %passthru, i32 %vl)
  ret <vscale x 2 x i32> %b
}

; Test vp.merge has all-ones mask.
define <vscale x 2 x i32> @vpmerge_vpadd3(<vscale x 2 x i32> %passthru, <vscale x 2 x i32> %x, <vscale x 2 x i32> %y, i32 zeroext %vl) {
; CHECK-LABEL: vpmerge_vpadd3:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, tu, ma
; CHECK-NEXT:    vadd.vv v8, v9, v10
; CHECK-NEXT:    ret
  %a = call <vscale x 2 x i32> @llvm.vp.add.nxv2i32(<vscale x 2 x i32> %x, <vscale x 2 x i32> %y, <vscale x 2 x i1> splat (i1 -1), i32 %vl)
  %b = call <vscale x 2 x i32> @llvm.vp.merge.nxv2i32(<vscale x 2 x i1> splat (i1 -1), <vscale x 2 x i32> %a, <vscale x 2 x i32> %passthru, i32 %vl)
  ret <vscale x 2 x i32> %b
}

; Test float binary operator with vp.merge and vp.fadd.
declare <vscale x 2 x float> @llvm.vp.fadd.nxv2f32(<vscale x 2 x float>, <vscale x 2 x float>, <vscale x 2 x i1>, i32)
define <vscale x 2 x float> @vpmerge_vpfadd(<vscale x 2 x float> %passthru, <vscale x 2 x float> %x, <vscale x 2 x float> %y, <vscale x 2 x i1> %m, i32 zeroext %vl) {
; CHECK-LABEL: vpmerge_vpfadd:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, tu, mu
; CHECK-NEXT:    vfadd.vv v8, v9, v10, v0.t
; CHECK-NEXT:    ret
  %a = call <vscale x 2 x float> @llvm.vp.fadd.nxv2f32(<vscale x 2 x float> %x, <vscale x 2 x float> %y, <vscale x 2 x i1> splat (i1 -1), i32 %vl)
  %b = call <vscale x 2 x float> @llvm.vp.merge.nxv2f32(<vscale x 2 x i1> %m, <vscale x 2 x float> %a, <vscale x 2 x float> %passthru, i32 %vl)
  ret <vscale x 2 x float> %b
}

; Test for binary operator with specific EEW by riscv.vrgatherei16.
declare <vscale x 2 x i32> @llvm.riscv.vrgatherei16.vv.nxv2i32.i64(<vscale x 2 x i32>, <vscale x 2 x i32>, <vscale x 2 x i16>, i64)
define <vscale x 2 x i32> @vpmerge_vrgatherei16(<vscale x 2 x i32> %passthru, <vscale x 2 x i32> %x, <vscale x 2 x i16> %y, <vscale x 2 x i1> %m, i32 zeroext %vl) {
; CHECK-LABEL: vpmerge_vrgatherei16:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, ta, ma
; CHECK-NEXT:    vrgatherei16.vv v8, v9, v10
; CHECK-NEXT:    ret
  %1 = zext i32 %vl to i64
  %2 = tail call <vscale x 2 x i32> @llvm.riscv.vrgatherei16.vv.nxv2i32.i64(<vscale x 2 x i32> undef, <vscale x 2 x i32> %x, <vscale x 2 x i16> %y, i64 %1)
  %3 = tail call <vscale x 2 x i32> @llvm.vp.merge.nxv2i32(<vscale x 2 x i1> %m, <vscale x 2 x i32> %2, <vscale x 2 x i32> %passthru, i32 %vl)
  ret <vscale x 2 x i32> %2
}

; Test conversion by fptosi.
declare <vscale x 2 x i16> @llvm.vp.fptosi.nxv2i16.nxv2f32(<vscale x 2 x float>, <vscale x 2 x i1>, i32)
define <vscale x 2 x i16> @vpmerge_vpfptosi(<vscale x 2 x i16> %passthru, <vscale x 2 x float> %x, <vscale x 2 x i1> %m, i32 zeroext %vl) {
; CHECK-LABEL: vpmerge_vpfptosi:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e16, mf2, tu, mu
; CHECK-NEXT:    vfncvt.rtz.x.f.w v8, v9, v0.t
; CHECK-NEXT:    ret
  %a = call <vscale x 2 x i16> @llvm.vp.fptosi.nxv2i16.nxv2f32(<vscale x 2 x float> %x, <vscale x 2 x i1> splat (i1 -1), i32 %vl)
  %b = call <vscale x 2 x i16> @llvm.vp.merge.nxv2i16(<vscale x 2 x i1> %m, <vscale x 2 x i16> %a, <vscale x 2 x i16> %passthru, i32 %vl)
  ret <vscale x 2 x i16> %b
}

; Test conversion by sitofp.
declare <vscale x 2 x float> @llvm.vp.sitofp.nxv2f32.nxv2i64(<vscale x 2 x i64>, <vscale x 2 x i1>, i32)
define <vscale x 2 x float> @vpmerge_vpsitofp(<vscale x 2 x float> %passthru, <vscale x 2 x i64> %x, <vscale x 2 x i1> %m, i32 zeroext %vl) {
; CHECK-LABEL: vpmerge_vpsitofp:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, tu, mu
; CHECK-NEXT:    vfncvt.f.x.w v8, v10, v0.t
; CHECK-NEXT:    ret
  %a = call <vscale x 2 x float> @llvm.vp.sitofp.nxv2f32.nxv2i64(<vscale x 2 x i64> %x, <vscale x 2 x i1> splat (i1 -1), i32 %vl)
  %b = call <vscale x 2 x float> @llvm.vp.merge.nxv2f32(<vscale x 2 x i1> %m, <vscale x 2 x float> %a, <vscale x 2 x float> %passthru, i32 %vl)
  ret <vscale x 2 x float> %b
}

; Test integer extension by vp.zext.
declare <vscale x 2 x i32> @llvm.vp.zext.nxv2i32.nxv2i8(<vscale x 2 x i8>, <vscale x 2 x i1>, i32)
define <vscale x 2 x i32> @vpmerge_vpzext(<vscale x 2 x i32> %passthru, <vscale x 2 x i8> %x, <vscale x 2 x i1> %m, i32 zeroext %vl) {
; CHECK-LABEL: vpmerge_vpzext:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, tu, mu
; CHECK-NEXT:    vzext.vf4 v8, v9, v0.t
; CHECK-NEXT:    ret
  %a = call <vscale x 2 x i32> @llvm.vp.zext.nxv2i32.nxv2i8(<vscale x 2 x i8> %x, <vscale x 2 x i1> splat (i1 -1), i32 %vl)
  %b = call <vscale x 2 x i32> @llvm.vp.merge.nxv2i32(<vscale x 2 x i1> %m, <vscale x 2 x i32> %a, <vscale x 2 x i32> %passthru, i32 %vl)
  ret <vscale x 2 x i32> %b
}

; Test integer truncation by vp.trunc.
declare <vscale x 2 x i32> @llvm.vp.trunc.nxv2i32.nxv2i64(<vscale x 2 x i64>, <vscale x 2 x i1>, i32)
define <vscale x 2 x i32> @vpmerge_vptrunc(<vscale x 2 x i32> %passthru, <vscale x 2 x i64> %x, <vscale x 2 x i1> %m, i32 zeroext %vl) {
; CHECK-LABEL: vpmerge_vptrunc:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, tu, mu
; CHECK-NEXT:    vnsrl.wi v8, v10, 0, v0.t
; CHECK-NEXT:    ret
  %a = call <vscale x 2 x i32> @llvm.vp.trunc.nxv2i32.nxv2i64(<vscale x 2 x i64> %x, <vscale x 2 x i1> splat (i1 -1), i32 %vl)
  %b = call <vscale x 2 x i32> @llvm.vp.merge.nxv2i32(<vscale x 2 x i1> %m, <vscale x 2 x i32> %a, <vscale x 2 x i32> %passthru, i32 %vl)
  ret <vscale x 2 x i32> %b
}

; Test integer extension by vp.fpext.
declare <vscale x 2 x double> @llvm.vp.fpext.nxv2f64.nxv2f32(<vscale x 2 x float>, <vscale x 2 x i1>, i32)
define <vscale x 2 x double> @vpmerge_vpfpext(<vscale x 2 x double> %passthru, <vscale x 2 x float> %x, <vscale x 2 x i1> %m, i32 zeroext %vl) {
; CHECK-LABEL: vpmerge_vpfpext:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, tu, mu
; CHECK-NEXT:    vfwcvt.f.f.v v8, v10, v0.t
; CHECK-NEXT:    ret
  %a = call <vscale x 2 x double> @llvm.vp.fpext.nxv2f64.nxv2f32(<vscale x 2 x float> %x, <vscale x 2 x i1> splat (i1 -1), i32 %vl)
  %b = call <vscale x 2 x double> @llvm.vp.merge.nxv2f64(<vscale x 2 x i1> %m, <vscale x 2 x double> %a, <vscale x 2 x double> %passthru, i32 %vl)
  ret <vscale x 2 x double> %b
}

; Test integer truncation by vp.trunc.
declare <vscale x 2 x float> @llvm.vp.fptrunc.nxv2f32.nxv2f64(<vscale x 2 x double>, <vscale x 2 x i1>, i32)
define <vscale x 2 x float> @vpmerge_vpfptrunc(<vscale x 2 x float> %passthru, <vscale x 2 x double> %x, <vscale x 2 x i1> %m, i32 zeroext %vl) {
; CHECK-LABEL: vpmerge_vpfptrunc:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, tu, mu
; CHECK-NEXT:    vfncvt.f.f.w v8, v10, v0.t
; CHECK-NEXT:    ret
  %a = call <vscale x 2 x float> @llvm.vp.fptrunc.nxv2f32.nxv2f64(<vscale x 2 x double> %x, <vscale x 2 x i1> splat (i1 -1), i32 %vl)
  %b = call <vscale x 2 x float> @llvm.vp.merge.nxv2f32(<vscale x 2 x i1> %m, <vscale x 2 x float> %a, <vscale x 2 x float> %passthru, i32 %vl)
  ret <vscale x 2 x float> %b
}

; Test load operation by vp.load.
declare <vscale x 2 x i32> @llvm.vp.load.nxv2i32.p0(ptr, <vscale x 2 x i1>, i32)
define <vscale x 2 x i32> @vpmerge_vpload(<vscale x 2 x i32> %passthru, ptr %p, <vscale x 2 x i1> %m, i32 zeroext %vl) {
; CHECK-LABEL: vpmerge_vpload:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a1, e32, m1, tu, mu
; CHECK-NEXT:    vle32.v v8, (a0), v0.t
; CHECK-NEXT:    ret
  %a = call <vscale x 2 x i32> @llvm.vp.load.nxv2i32.p0(ptr %p, <vscale x 2 x i1> splat (i1 -1), i32 %vl)
  %b = call <vscale x 2 x i32> @llvm.vp.merge.nxv2i32(<vscale x 2 x i1> %m, <vscale x 2 x i32> %a, <vscale x 2 x i32> %passthru, i32 %vl)
  ret <vscale x 2 x i32> %b
}

; Test result has chain and glued node.
define <vscale x 2 x i32> @vpmerge_vpload2(<vscale x 2 x i32> %passthru, ptr %p, <vscale x 2 x i32> %x, <vscale x 2 x i32> %y, i32 zeroext %vl) {
; CHECK-LABEL: vpmerge_vpload2:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a1, e32, m1, ta, ma
; CHECK-NEXT:    vmseq.vv v0, v9, v10
; CHECK-NEXT:    vsetvli zero, zero, e32, m1, tu, mu
; CHECK-NEXT:    vle32.v v8, (a0), v0.t
; CHECK-NEXT:    ret
  %a = call <vscale x 2 x i32> @llvm.vp.load.nxv2i32.p0(ptr %p, <vscale x 2 x i1> splat (i1 -1), i32 %vl)
  %m = call <vscale x 2 x i1> @llvm.vp.icmp.nxv2i32(<vscale x 2 x i32> %x, <vscale x 2 x i32> %y, metadata !"eq", <vscale x 2 x i1> splat (i1 -1), i32 %vl)
  %b = call <vscale x 2 x i32> @llvm.vp.merge.nxv2i32(<vscale x 2 x i1> %m, <vscale x 2 x i32> %a, <vscale x 2 x i32> %passthru, i32 %vl)
  ret <vscale x 2 x i32> %b
}

; Test result has chain output of true operand of merge.vvm.
define void @vpmerge_vpload_store(<vscale x 2 x i32> %passthru, ptr %p, <vscale x 2 x i1> %m, i32 zeroext %vl) {
; CHECK-LABEL: vpmerge_vpload_store:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a1, e32, m1, tu, mu
; CHECK-NEXT:    vle32.v v8, (a0), v0.t
; CHECK-NEXT:    vs1r.v v8, (a0)
; CHECK-NEXT:    ret
  %a = call <vscale x 2 x i32> @llvm.vp.load.nxv2i32.p0(ptr %p, <vscale x 2 x i1> splat (i1 -1), i32 %vl)
  %b = call <vscale x 2 x i32> @llvm.vp.merge.nxv2i32(<vscale x 2 x i1> %m, <vscale x 2 x i32> %a, <vscale x 2 x i32> %passthru, i32 %vl)
  store <vscale x 2 x i32> %b, ptr %p
  ret void
}

declare { <vscale x 2 x i32>, i64 } @llvm.riscv.vleff.nxv2i32(<vscale x 2 x i32>, ptr, i64)
define <vscale x 2 x i32> @vpmerge_vleff(<vscale x 2 x i32> %passthru, ptr %p, <vscale x 2 x i1> %m, i32 zeroext %vl) {
; CHECK-LABEL: vpmerge_vleff:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a1, e32, m1, tu, mu
; CHECK-NEXT:    vle32ff.v v8, (a0), v0.t
; CHECK-NEXT:    ret
  %1 = zext i32 %vl to i64
  %a = call { <vscale x 2 x i32>, i64 } @llvm.riscv.vleff.nxv2i32(<vscale x 2 x i32> undef, ptr %p, i64 %1)
  %b = extractvalue { <vscale x 2 x i32>, i64 } %a, 0
  %c = call <vscale x 2 x i32> @llvm.vp.merge.nxv2i32(<vscale x 2 x i1> %m, <vscale x 2 x i32> %b, <vscale x 2 x i32> %passthru, i32 %vl)
  ret <vscale x 2 x i32> %c
}

; Test strided load by riscv.vlse
declare <vscale x 2 x i32> @llvm.riscv.vlse.nxv2i32(<vscale x 2 x i32>, ptr, i64, i64)
define <vscale x 2 x i32> @vpmerge_vlse(<vscale x 2 x i32> %passthru,  ptr %p, <vscale x 2 x i1> %m, i64 %s, i32 zeroext %vl) {
; CHECK-LABEL: vpmerge_vlse:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a2, e32, m1, tu, mu
; CHECK-NEXT:    vlse32.v v8, (a0), a1, v0.t
; CHECK-NEXT:    ret
  %1 = zext i32 %vl to i64
  %a = call <vscale x 2 x i32> @llvm.riscv.vlse.nxv2i32(<vscale x 2 x i32> undef, ptr %p, i64 %s, i64 %1)
  %b = call <vscale x 2 x i32> @llvm.vp.merge.nxv2i32(<vscale x 2 x i1> %m, <vscale x 2 x i32> %a, <vscale x 2 x i32> %passthru, i32 %vl)
  ret <vscale x 2 x i32> %b
}

; Test indexed load by riscv.vluxei
declare <vscale x 2 x i32> @llvm.riscv.vluxei.nxv2i32.nxv2i64(<vscale x 2 x i32>, ptr, <vscale x 2 x i64>, i64)
define <vscale x 2 x i32> @vpmerge_vluxei(<vscale x 2 x i32> %passthru,  ptr %p, <vscale x 2 x i64> %idx, <vscale x 2 x i1> %m, i64 %s, i32 zeroext %vl) {
; CHECK-LABEL: vpmerge_vluxei:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a2, e32, m1, tu, mu
; CHECK-NEXT:    vluxei64.v v8, (a0), v10, v0.t
; CHECK-NEXT:    ret
  %1 = zext i32 %vl to i64
  %a = call <vscale x 2 x i32> @llvm.riscv.vluxei.nxv2i32.nxv2i64(<vscale x 2 x i32> undef, ptr %p, <vscale x 2 x i64> %idx, i64 %1)
  %b = call <vscale x 2 x i32> @llvm.vp.merge.nxv2i32(<vscale x 2 x i1> %m, <vscale x 2 x i32> %a, <vscale x 2 x i32> %passthru, i32 %vl)
  ret <vscale x 2 x i32> %b
}

; Test vector index by riscv.vid
declare <vscale x 2 x i32> @llvm.riscv.vid.nxv2i32(<vscale x 2 x i32>, i64)
define <vscale x 2 x i32> @vpmerge_vid(<vscale x 2 x i32> %passthru, <vscale x 2 x i1> %m, i32 zeroext %vl) {
; CHECK-LABEL: vpmerge_vid:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, tu, mu
; CHECK-NEXT:    vid.v v8, v0.t
; CHECK-NEXT:    ret
  %1 = zext i32 %vl to i64
  %a = call <vscale x 2 x i32> @llvm.riscv.vid.nxv2i32(<vscale x 2 x i32> undef, i64 %1)
  %b = call <vscale x 2 x i32> @llvm.vp.merge.nxv2i32(<vscale x 2 x i1> %m, <vscale x 2 x i32> %a, <vscale x 2 x i32> %passthru, i32 %vl)
  ret <vscale x 2 x i32> %b
}

; Test not combine VIOTA_M and VMERGE_VVM without true mask.
declare <vscale x 2 x i32> @llvm.riscv.viota.nxv2i32(<vscale x 2 x i32>, <vscale x 2 x i1>, i64)
define <vscale x 2 x i32> @vpmerge_viota(<vscale x 2 x i32> %passthru, <vscale x 2 x i1> %m, <vscale x 2 x i1> %vm, i32 zeroext %vl) {
; CHECK-LABEL: vpmerge_viota:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, ta, ma
; CHECK-NEXT:    viota.m v10, v9
; CHECK-NEXT:    vsetvli zero, zero, e32, m1, tu, ma
; CHECK-NEXT:    vmerge.vvm v8, v8, v10, v0
; CHECK-NEXT:    ret
  %1 = zext i32 %vl to i64
  %a = call <vscale x 2 x i32> @llvm.riscv.viota.nxv2i32(<vscale x 2 x i32> undef, <vscale x 2 x i1> %vm, i64 %1)
  %b = call <vscale x 2 x i32> @llvm.vp.merge.nxv2i32(<vscale x 2 x i1> %m, <vscale x 2 x i32> %a, <vscale x 2 x i32> %passthru, i32 %vl)
  ret <vscale x 2 x i32> %b
}

; Test combine VIOTA_M and VMERGE_VVM with true mask.
define <vscale x 2 x i32> @vpmerge_viota2(<vscale x 2 x i32> %passthru, <vscale x 2 x i1> %vm, i32 zeroext %vl) {
; CHECK-LABEL: vpmerge_viota2:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, tu, ma
; CHECK-NEXT:    viota.m v8, v0
; CHECK-NEXT:    ret
  %1 = zext i32 %vl to i64
  %a = call <vscale x 2 x i32> @llvm.riscv.viota.nxv2i32(<vscale x 2 x i32> undef, <vscale x 2 x i1> %vm, i64 %1)
  %b = call <vscale x 2 x i32> @llvm.vp.merge.nxv2i32(<vscale x 2 x i1> splat (i1 -1), <vscale x 2 x i32> %a, <vscale x 2 x i32> %passthru, i32 %vl)
  ret <vscale x 2 x i32> %b
}

; Test riscv.vfclass
declare <vscale x 2 x i32> @llvm.riscv.vfclass.nxv2i32(<vscale x 2 x i32>, <vscale x 2 x float>, i64)
define <vscale x 2 x i32> @vpmerge_vflcass(<vscale x 2 x i32> %passthru, <vscale x 2 x float> %vf, <vscale x 2 x i1> %m, i32 zeroext %vl) {
; CHECK-LABEL: vpmerge_vflcass:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, tu, mu
; CHECK-NEXT:    vfclass.v v8, v9, v0.t
; CHECK-NEXT:    ret
  %1 = zext i32 %vl to i64
  %a = call <vscale x 2 x i32> @llvm.riscv.vfclass.nxv2i32(<vscale x 2 x i32> undef, <vscale x 2 x float> %vf, i64 %1)
  %b = call <vscale x 2 x i32> @llvm.vp.merge.nxv2i32(<vscale x 2 x i1> %m, <vscale x 2 x i32> %a, <vscale x 2 x i32> %passthru, i32 %vl)
  ret <vscale x 2 x i32> %b
}

; Test riscv.vfsqrt
declare <vscale x 2 x float> @llvm.riscv.vfsqrt.nxv2f32(<vscale x 2 x float>, <vscale x 2 x float>, i64, i64)
define <vscale x 2 x float> @vpmerge_vfsqrt(<vscale x 2 x float> %passthru, <vscale x 2 x float> %vf, <vscale x 2 x i1> %m, i32 zeroext %vl) {
; CHECK-LABEL: vpmerge_vfsqrt:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, tu, mu
; CHECK-NEXT:    vfsqrt.v v8, v9, v0.t
; CHECK-NEXT:    ret
  %1 = zext i32 %vl to i64
  %a = call <vscale x 2 x float> @llvm.riscv.vfsqrt.nxv2f32(<vscale x 2 x float> undef, <vscale x 2 x float> %vf, i64 7, i64 %1)
  %b = call <vscale x 2 x float> @llvm.vp.merge.nxv2f32(<vscale x 2 x i1> %m, <vscale x 2 x float> %a, <vscale x 2 x float> %passthru, i32 %vl)
  ret <vscale x 2 x float> %b
}

; Test reciprocal operation by riscv.vfrec7
declare <vscale x 2 x float> @llvm.riscv.vfrec7.nxv2f32(<vscale x 2 x float>, <vscale x 2 x float>, i64, i64)
define <vscale x 2 x float> @vpmerge_vfrec7(<vscale x 2 x float> %passthru, <vscale x 2 x float> %vf, <vscale x 2 x i1> %m, i32 zeroext %vl) {
; CHECK-LABEL: vpmerge_vfrec7:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, tu, mu
; CHECK-NEXT:    vfrec7.v v8, v9, v0.t
; CHECK-NEXT:    ret
  %1 = zext i32 %vl to i64
  %a = call <vscale x 2 x float> @llvm.riscv.vfrec7.nxv2f32(<vscale x 2 x float> undef, <vscale x 2 x float> %vf, i64 7, i64 %1)
  %b = call <vscale x 2 x float> @llvm.vp.merge.nxv2f32(<vscale x 2 x i1> %m, <vscale x 2 x float> %a, <vscale x 2 x float> %passthru, i32 %vl)
  ret <vscale x 2 x float> %b
}

; Test vector operations with VLMAX vector length.

; Test binary operator with vp.merge and add.
define <vscale x 2 x i32> @vpmerge_add(<vscale x 2 x i32> %passthru, <vscale x 2 x i32> %x, <vscale x 2 x i32> %y, <vscale x 2 x i1> %m, i32 zeroext %vl) {
; CHECK-LABEL: vpmerge_add:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, tu, mu
; CHECK-NEXT:    vadd.vv v8, v9, v10, v0.t
; CHECK-NEXT:    ret
  %a = add <vscale x 2 x i32> %x, %y
  %b = call <vscale x 2 x i32> @llvm.vp.merge.nxv2i32(<vscale x 2 x i1> %m, <vscale x 2 x i32> %a, <vscale x 2 x i32> %passthru, i32 %vl)
  ret <vscale x 2 x i32> %b
}

; Test binary operator with vp.merge and fadd.
define <vscale x 2 x float> @vpmerge_fadd(<vscale x 2 x float> %passthru, <vscale x 2 x float> %x, <vscale x 2 x float> %y, <vscale x 2 x i1> %m, i32 zeroext %vl) {
; CHECK-LABEL: vpmerge_fadd:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, tu, mu
; CHECK-NEXT:    vfadd.vv v8, v9, v10, v0.t
; CHECK-NEXT:    ret
  %a = fadd <vscale x 2 x float> %x, %y
  %b = call <vscale x 2 x float> @llvm.vp.merge.nxv2f32(<vscale x 2 x i1> %m, <vscale x 2 x float> %a, <vscale x 2 x float> %passthru, i32 %vl)
  ret <vscale x 2 x float> %b
}

; This shouldn't be folded because we need to preserve exceptions with
; "fpexcept.strict" exception behaviour, and masking may hide them.
define <vscale x 2 x float> @vpmerge_constrained_fadd(<vscale x 2 x float> %passthru, <vscale x 2 x float> %x, <vscale x 2 x float> %y, <vscale x 2 x i1> %m, i64 %vl) strictfp {
; CHECK-LABEL: vpmerge_constrained_fadd:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli a1, zero, e32, m1, ta, ma
; CHECK-NEXT:    vfadd.vv v9, v9, v10
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, tu, ma
; CHECK-NEXT:    vmerge.vvm v8, v8, v9, v0
; CHECK-NEXT:    ret
  %a = call <vscale x 2 x float> @llvm.experimental.constrained.fadd.nxv2f32(<vscale x 2 x float> %x, <vscale x 2 x float> %y, metadata !"round.dynamic", metadata !"fpexcept.strict") strictfp
  %b = call <vscale x 2 x float> @llvm.riscv.vmerge.nxv2f32.nxv2f32(<vscale x 2 x float> %passthru, <vscale x 2 x float> %passthru, <vscale x 2 x float> %a, <vscale x 2 x i1> %m, i64 %vl) strictfp
  ret <vscale x 2 x float> %b
}
declare <vscale x 2 x float> @llvm.experimental.constrained.fadd.nxv2f32(<vscale x 2 x float>, <vscale x 2 x float>, metadata, metadata)
declare <vscale x 2 x float> @llvm.riscv.vmerge.nxv2f32.nxv2f32(<vscale x 2 x float>, <vscale x 2 x float>, <vscale x 2 x float>, <vscale x 2 x i1>, i64)

; This shouldn't be folded because we need to preserve exceptions with
; "fpexcept.strict" exception behaviour, and masking may hide them.
define <vscale x 2 x float> @vpmerge_constrained_fadd_vlmax(<vscale x 2 x float> %passthru, <vscale x 2 x float> %x, <vscale x 2 x float> %y, <vscale x 2 x i1> %m) strictfp {
; CHECK-LABEL: vpmerge_constrained_fadd_vlmax:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli a0, zero, e32, m1, ta, ma
; CHECK-NEXT:    vfadd.vv v9, v9, v10
; CHECK-NEXT:    vsetvli zero, zero, e32, m1, tu, ma
; CHECK-NEXT:    vmerge.vvm v8, v8, v9, v0
; CHECK-NEXT:    ret
  %a = call <vscale x 2 x float> @llvm.experimental.constrained.fadd.nxv2f32(<vscale x 2 x float> %x, <vscale x 2 x float> %y, metadata !"round.dynamic", metadata !"fpexcept.strict") strictfp
  %b = call <vscale x 2 x float> @llvm.riscv.vmerge.nxv2f32.nxv2f32(<vscale x 2 x float> %passthru, <vscale x 2 x float> %passthru, <vscale x 2 x float> %a, <vscale x 2 x i1> %m, i64 -1) strictfp
  ret <vscale x 2 x float> %b
}

; Test conversion by fptosi.
define <vscale x 2 x i16> @vpmerge_fptosi(<vscale x 2 x i16> %passthru, <vscale x 2 x float> %x, <vscale x 2 x i1> %m, i32 zeroext %vl) {
; CHECK-LABEL: vpmerge_fptosi:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e16, mf2, tu, mu
; CHECK-NEXT:    vfncvt.rtz.x.f.w v8, v9, v0.t
; CHECK-NEXT:    ret
  %a = fptosi <vscale x 2 x float> %x to <vscale x 2 x i16>
  %b = call <vscale x 2 x i16> @llvm.vp.merge.nxv2i16(<vscale x 2 x i1> %m, <vscale x 2 x i16> %a, <vscale x 2 x i16> %passthru, i32 %vl)
  ret <vscale x 2 x i16> %b
}

; Test conversion by sitofp.
define <vscale x 2 x float> @vpmerge_sitofp(<vscale x 2 x float> %passthru, <vscale x 2 x i64> %x, <vscale x 2 x i1> %m, i32 zeroext %vl) {
; CHECK-LABEL: vpmerge_sitofp:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, tu, mu
; CHECK-NEXT:    vfncvt.f.x.w v8, v10, v0.t
; CHECK-NEXT:    ret
  %a = sitofp <vscale x 2 x i64> %x to <vscale x 2 x float>
  %b = call <vscale x 2 x float> @llvm.vp.merge.nxv2f32(<vscale x 2 x i1> %m, <vscale x 2 x float> %a, <vscale x 2 x float> %passthru, i32 %vl)
  ret <vscale x 2 x float> %b
}

; Test float extension by fpext.
define <vscale x 2 x double> @vpmerge_fpext(<vscale x 2 x double> %passthru, <vscale x 2 x float> %x, <vscale x 2 x i1> %m, i32 zeroext %vl) {
; CHECK-LABEL: vpmerge_fpext:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, tu, mu
; CHECK-NEXT:    vfwcvt.f.f.v v8, v10, v0.t
; CHECK-NEXT:    ret
  %a = fpext <vscale x 2 x float> %x to <vscale x 2 x double>
  %b = call <vscale x 2 x double> @llvm.vp.merge.nxv2f64(<vscale x 2 x i1> %m, <vscale x 2 x double> %a, <vscale x 2 x double> %passthru, i32 %vl)
  ret <vscale x 2 x double> %b
}

; Test float truncation by fptrunc.
define <vscale x 2 x float> @vpmerge_fptrunc(<vscale x 2 x float> %passthru, <vscale x 2 x double> %x, <vscale x 2 x i1> %m, i32 zeroext %vl) {
; CHECK-LABEL: vpmerge_fptrunc:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, tu, mu
; CHECK-NEXT:    vfncvt.f.f.w v8, v10, v0.t
; CHECK-NEXT:    ret
  %a = fptrunc <vscale x 2 x double> %x to <vscale x 2 x float>
  %b = call <vscale x 2 x float> @llvm.vp.merge.nxv2f32(<vscale x 2 x i1> %m, <vscale x 2 x float> %a, <vscale x 2 x float> %passthru, i32 %vl)
  ret <vscale x 2 x float> %b
}

; Test integer extension by zext.
define <vscale x 2 x i32> @vpmerge_zext(<vscale x 2 x i32> %passthru, <vscale x 2 x i8> %x, <vscale x 2 x i1> %m, i32 zeroext %vl) {
; CHECK-LABEL: vpmerge_zext:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, tu, mu
; CHECK-NEXT:    vzext.vf4 v8, v9, v0.t
; CHECK-NEXT:    ret
  %a = zext <vscale x 2 x i8> %x to <vscale x 2 x i32>
  %b = call <vscale x 2 x i32> @llvm.vp.merge.nxv2i32(<vscale x 2 x i1> %m, <vscale x 2 x i32> %a, <vscale x 2 x i32> %passthru, i32 %vl)
  ret <vscale x 2 x i32> %b
}

; Test integer truncation by trunc.
define <vscale x 2 x i32> @vpmerge_trunc(<vscale x 2 x i32> %passthru, <vscale x 2 x i64> %x, <vscale x 2 x i1> %m, i32 zeroext %vl) {
; CHECK-LABEL: vpmerge_trunc:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, tu, mu
; CHECK-NEXT:    vnsrl.wi v8, v10, 0, v0.t
; CHECK-NEXT:    ret
  %a = trunc <vscale x 2 x i64> %x to <vscale x 2 x i32>
  %b = call <vscale x 2 x i32> @llvm.vp.merge.nxv2i32(<vscale x 2 x i1> %m, <vscale x 2 x i32> %a, <vscale x 2 x i32> %passthru, i32 %vl)
  ret <vscale x 2 x i32> %b
}

declare <vscale x 2 x i16> @llvm.vp.select.nxv2i16(<vscale x 2 x i1>, <vscale x 2 x i16>, <vscale x 2 x i16>, i32)
declare <vscale x 2 x i32> @llvm.vp.select.nxv2i32(<vscale x 2 x i1>, <vscale x 2 x i32>, <vscale x 2 x i32>, i32)
declare <vscale x 2 x float> @llvm.vp.select.nxv2f32(<vscale x 2 x i1>, <vscale x 2 x float>, <vscale x 2 x float>, i32)
declare <vscale x 2 x double> @llvm.vp.select.nxv2f64(<vscale x 2 x i1>, <vscale x 2 x double>, <vscale x 2 x double>, i32)

; Test binary operator with vp.select and vp.smax.
define <vscale x 2 x i32> @vpselect_vpadd(<vscale x 2 x i32> %passthru, <vscale x 2 x i32> %x, <vscale x 2 x i32> %y, <vscale x 2 x i1> %m, i32 zeroext %vl) {
; CHECK-LABEL: vpselect_vpadd:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, ta, mu
; CHECK-NEXT:    vadd.vv v8, v9, v10, v0.t
; CHECK-NEXT:    ret
  %a = call <vscale x 2 x i32> @llvm.vp.add.nxv2i32(<vscale x 2 x i32> %x, <vscale x 2 x i32> %y, <vscale x 2 x i1> splat (i1 -1), i32 %vl)
  %b = call <vscale x 2 x i32> @llvm.vp.select.nxv2i32(<vscale x 2 x i1> %m, <vscale x 2 x i32> %a, <vscale x 2 x i32> %passthru, i32 %vl)
  ret <vscale x 2 x i32> %b
}

; Test glued node of select should not be deleted.
define <vscale x 2 x i32> @vpselect_vpadd2(<vscale x 2 x i32> %passthru, <vscale x 2 x i32> %x, <vscale x 2 x i32> %y, i32 zeroext %vl) {
; CHECK-LABEL: vpselect_vpadd2:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, ta, mu
; CHECK-NEXT:    vmseq.vv v0, v9, v10
; CHECK-NEXT:    vadd.vv v8, v9, v10, v0.t
; CHECK-NEXT:    ret
  %a = call <vscale x 2 x i32> @llvm.vp.add.nxv2i32(<vscale x 2 x i32> %x, <vscale x 2 x i32> %y, <vscale x 2 x i1> splat (i1 -1), i32 %vl)
  %m = call <vscale x 2 x i1> @llvm.vp.icmp.nxv2i32(<vscale x 2 x i32> %x, <vscale x 2 x i32> %y, metadata !"eq", <vscale x 2 x i1> splat (i1 -1), i32 %vl)
  %b = call <vscale x 2 x i32> @llvm.vp.select.nxv2i32(<vscale x 2 x i1> %m, <vscale x 2 x i32> %a, <vscale x 2 x i32> %passthru, i32 %vl)
  ret <vscale x 2 x i32> %b
}

; Test vp.select has all-ones mask.
define <vscale x 2 x i32> @vpselect_vpadd3(<vscale x 2 x i32> %passthru, <vscale x 2 x i32> %x, <vscale x 2 x i32> %y, i32 zeroext %vl) {
; CHECK-LABEL: vpselect_vpadd3:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, ta, ma
; CHECK-NEXT:    vadd.vv v8, v9, v10
; CHECK-NEXT:    ret
  %a = call <vscale x 2 x i32> @llvm.vp.add.nxv2i32(<vscale x 2 x i32> %x, <vscale x 2 x i32> %y, <vscale x 2 x i1> splat (i1 -1), i32 %vl)
  %b = call <vscale x 2 x i32> @llvm.vp.select.nxv2i32(<vscale x 2 x i1> splat (i1 -1), <vscale x 2 x i32> %a, <vscale x 2 x i32> %passthru, i32 %vl)
  ret <vscale x 2 x i32> %b
}

; Test float binary operator with vp.select and vp.fadd.
define <vscale x 2 x float> @vpselect_vpfadd(<vscale x 2 x float> %passthru, <vscale x 2 x float> %x, <vscale x 2 x float> %y, <vscale x 2 x i1> %m, i32 zeroext %vl) {
; CHECK-LABEL: vpselect_vpfadd:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, ta, mu
; CHECK-NEXT:    vfadd.vv v8, v9, v10, v0.t
; CHECK-NEXT:    ret
  %a = call <vscale x 2 x float> @llvm.vp.fadd.nxv2f32(<vscale x 2 x float> %x, <vscale x 2 x float> %y, <vscale x 2 x i1> splat (i1 -1), i32 %vl)
  %b = call <vscale x 2 x float> @llvm.vp.select.nxv2f32(<vscale x 2 x i1> %m, <vscale x 2 x float> %a, <vscale x 2 x float> %passthru, i32 %vl)
  ret <vscale x 2 x float> %b
}

; Test for binary operator with specific EEW by riscv.vrgatherei16.
define <vscale x 2 x i32> @vpselect_vrgatherei16(<vscale x 2 x i32> %passthru, <vscale x 2 x i32> %x, <vscale x 2 x i16> %y, <vscale x 2 x i1> %m, i32 zeroext %vl) {
; CHECK-LABEL: vpselect_vrgatherei16:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, ta, ma
; CHECK-NEXT:    vrgatherei16.vv v8, v9, v10
; CHECK-NEXT:    ret
  %1 = zext i32 %vl to i64
  %2 = tail call <vscale x 2 x i32> @llvm.riscv.vrgatherei16.vv.nxv2i32.i64(<vscale x 2 x i32> undef, <vscale x 2 x i32> %x, <vscale x 2 x i16> %y, i64 %1)
  %3 = tail call <vscale x 2 x i32> @llvm.vp.select.nxv2i32(<vscale x 2 x i1> %m, <vscale x 2 x i32> %2, <vscale x 2 x i32> %passthru, i32 %vl)
  ret <vscale x 2 x i32> %2
}

; Test conversion by fptosi.
define <vscale x 2 x i16> @vpselect_vpfptosi(<vscale x 2 x i16> %passthru, <vscale x 2 x float> %x, <vscale x 2 x i1> %m, i32 zeroext %vl) {
; CHECK-LABEL: vpselect_vpfptosi:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e16, mf2, ta, mu
; CHECK-NEXT:    vfncvt.rtz.x.f.w v8, v9, v0.t
; CHECK-NEXT:    ret
  %a = call <vscale x 2 x i16> @llvm.vp.fptosi.nxv2i16.nxv2f32(<vscale x 2 x float> %x, <vscale x 2 x i1> splat (i1 -1), i32 %vl)
  %b = call <vscale x 2 x i16> @llvm.vp.select.nxv2i16(<vscale x 2 x i1> %m, <vscale x 2 x i16> %a, <vscale x 2 x i16> %passthru, i32 %vl)
  ret <vscale x 2 x i16> %b
}

; Test conversion by sitofp.
define <vscale x 2 x float> @vpselect_vpsitofp(<vscale x 2 x float> %passthru, <vscale x 2 x i64> %x, <vscale x 2 x i1> %m, i32 zeroext %vl) {
; CHECK-LABEL: vpselect_vpsitofp:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, ta, mu
; CHECK-NEXT:    vfncvt.f.x.w v8, v10, v0.t
; CHECK-NEXT:    ret
  %a = call <vscale x 2 x float> @llvm.vp.sitofp.nxv2f32.nxv2i64(<vscale x 2 x i64> %x, <vscale x 2 x i1> splat (i1 -1), i32 %vl)
  %b = call <vscale x 2 x float> @llvm.vp.select.nxv2f32(<vscale x 2 x i1> %m, <vscale x 2 x float> %a, <vscale x 2 x float> %passthru, i32 %vl)
  ret <vscale x 2 x float> %b
}

; Test integer extension by vp.zext.
define <vscale x 2 x i32> @vpselect_vpzext(<vscale x 2 x i32> %passthru, <vscale x 2 x i8> %x, <vscale x 2 x i1> %m, i32 zeroext %vl) {
; CHECK-LABEL: vpselect_vpzext:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, ta, mu
; CHECK-NEXT:    vzext.vf4 v8, v9, v0.t
; CHECK-NEXT:    ret
  %a = call <vscale x 2 x i32> @llvm.vp.zext.nxv2i32.nxv2i8(<vscale x 2 x i8> %x, <vscale x 2 x i1> splat (i1 -1), i32 %vl)
  %b = call <vscale x 2 x i32> @llvm.vp.select.nxv2i32(<vscale x 2 x i1> %m, <vscale x 2 x i32> %a, <vscale x 2 x i32> %passthru, i32 %vl)
  ret <vscale x 2 x i32> %b
}

; Test integer truncation by vp.trunc.
define <vscale x 2 x i32> @vpselect_vptrunc(<vscale x 2 x i32> %passthru, <vscale x 2 x i64> %x, <vscale x 2 x i1> %m, i32 zeroext %vl) {
; CHECK-LABEL: vpselect_vptrunc:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, ta, mu
; CHECK-NEXT:    vnsrl.wi v8, v10, 0, v0.t
; CHECK-NEXT:    ret
  %a = call <vscale x 2 x i32> @llvm.vp.trunc.nxv2i32.nxv2i64(<vscale x 2 x i64> %x, <vscale x 2 x i1> splat (i1 -1), i32 %vl)
  %b = call <vscale x 2 x i32> @llvm.vp.select.nxv2i32(<vscale x 2 x i1> %m, <vscale x 2 x i32> %a, <vscale x 2 x i32> %passthru, i32 %vl)
  ret <vscale x 2 x i32> %b
}

; Test integer extension by vp.fpext.
define <vscale x 2 x double> @vpselect_vpfpext(<vscale x 2 x double> %passthru, <vscale x 2 x float> %x, <vscale x 2 x i1> %m, i32 zeroext %vl) {
; CHECK-LABEL: vpselect_vpfpext:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, ta, mu
; CHECK-NEXT:    vfwcvt.f.f.v v8, v10, v0.t
; CHECK-NEXT:    ret
  %a = call <vscale x 2 x double> @llvm.vp.fpext.nxv2f64.nxv2f32(<vscale x 2 x float> %x, <vscale x 2 x i1> splat (i1 -1), i32 %vl)
  %b = call <vscale x 2 x double> @llvm.vp.select.nxv2f64(<vscale x 2 x i1> %m, <vscale x 2 x double> %a, <vscale x 2 x double> %passthru, i32 %vl)
  ret <vscale x 2 x double> %b
}

; Test integer truncation by vp.trunc.
define <vscale x 2 x float> @vpselect_vpfptrunc(<vscale x 2 x float> %passthru, <vscale x 2 x double> %x, <vscale x 2 x i1> %m, i32 zeroext %vl) {
; CHECK-LABEL: vpselect_vpfptrunc:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, ta, mu
; CHECK-NEXT:    vfncvt.f.f.w v8, v10, v0.t
; CHECK-NEXT:    ret
  %a = call <vscale x 2 x float> @llvm.vp.fptrunc.nxv2f32.nxv2f64(<vscale x 2 x double> %x, <vscale x 2 x i1> splat (i1 -1), i32 %vl)
  %b = call <vscale x 2 x float> @llvm.vp.select.nxv2f32(<vscale x 2 x i1> %m, <vscale x 2 x float> %a, <vscale x 2 x float> %passthru, i32 %vl)
  ret <vscale x 2 x float> %b
}

; Test load operation by vp.load.
define <vscale x 2 x i32> @vpselect_vpload(<vscale x 2 x i32> %passthru, ptr %p, <vscale x 2 x i1> %m, i32 zeroext %vl) {
; CHECK-LABEL: vpselect_vpload:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a1, e32, m1, ta, mu
; CHECK-NEXT:    vle32.v v8, (a0), v0.t
; CHECK-NEXT:    ret
  %a = call <vscale x 2 x i32> @llvm.vp.load.nxv2i32.p0(ptr %p, <vscale x 2 x i1> splat (i1 -1), i32 %vl)
  %b = call <vscale x 2 x i32> @llvm.vp.select.nxv2i32(<vscale x 2 x i1> %m, <vscale x 2 x i32> %a, <vscale x 2 x i32> %passthru, i32 %vl)
  ret <vscale x 2 x i32> %b
}

; Test result has chain and glued node.
define <vscale x 2 x i32> @vpselect_vpload2(<vscale x 2 x i32> %passthru, ptr %p, <vscale x 2 x i32> %x, <vscale x 2 x i32> %y, i32 zeroext %vl) {
; CHECK-LABEL: vpselect_vpload2:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a1, e32, m1, ta, mu
; CHECK-NEXT:    vmseq.vv v0, v9, v10
; CHECK-NEXT:    vle32.v v8, (a0), v0.t
; CHECK-NEXT:    ret
  %a = call <vscale x 2 x i32> @llvm.vp.load.nxv2i32.p0(ptr %p, <vscale x 2 x i1> splat (i1 -1), i32 %vl)
  %m = call <vscale x 2 x i1> @llvm.vp.icmp.nxv2i32(<vscale x 2 x i32> %x, <vscale x 2 x i32> %y, metadata !"eq", <vscale x 2 x i1> splat (i1 -1), i32 %vl)
  %b = call <vscale x 2 x i32> @llvm.vp.select.nxv2i32(<vscale x 2 x i1> %m, <vscale x 2 x i32> %a, <vscale x 2 x i32> %passthru, i32 %vl)
  ret <vscale x 2 x i32> %b
}

; Test result has chain output of true operand of select.vvm.
define void @vpselect_vpload_store(<vscale x 2 x i32> %passthru, ptr %p, <vscale x 2 x i1> %m, i32 zeroext %vl) {
; CHECK-LABEL: vpselect_vpload_store:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a1, e32, m1, ta, mu
; CHECK-NEXT:    vle32.v v8, (a0), v0.t
; CHECK-NEXT:    vs1r.v v8, (a0)
; CHECK-NEXT:    ret
  %a = call <vscale x 2 x i32> @llvm.vp.load.nxv2i32.p0(ptr %p, <vscale x 2 x i1> splat (i1 -1), i32 %vl)
  %b = call <vscale x 2 x i32> @llvm.vp.select.nxv2i32(<vscale x 2 x i1> %m, <vscale x 2 x i32> %a, <vscale x 2 x i32> %passthru, i32 %vl)
  store <vscale x 2 x i32> %b, ptr %p
  ret void
}

define <vscale x 2 x i32> @vpselect_vleff(<vscale x 2 x i32> %passthru, ptr %p, <vscale x 2 x i1> %m, i32 zeroext %vl) {
; CHECK-LABEL: vpselect_vleff:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a1, e32, m1, ta, mu
; CHECK-NEXT:    vle32ff.v v8, (a0), v0.t
; CHECK-NEXT:    ret
  %1 = zext i32 %vl to i64
  %a = call { <vscale x 2 x i32>, i64 } @llvm.riscv.vleff.nxv2i32(<vscale x 2 x i32> undef, ptr %p, i64 %1)
  %b = extractvalue { <vscale x 2 x i32>, i64 } %a, 0
  %c = call <vscale x 2 x i32> @llvm.vp.select.nxv2i32(<vscale x 2 x i1> %m, <vscale x 2 x i32> %b, <vscale x 2 x i32> %passthru, i32 %vl)
  ret <vscale x 2 x i32> %c
}

; Test strided load by riscv.vlse
define <vscale x 2 x i32> @vpselect_vlse(<vscale x 2 x i32> %passthru,  ptr %p, <vscale x 2 x i1> %m, i64 %s, i32 zeroext %vl) {
; CHECK-LABEL: vpselect_vlse:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a2, e32, m1, ta, mu
; CHECK-NEXT:    vlse32.v v8, (a0), a1, v0.t
; CHECK-NEXT:    ret
  %1 = zext i32 %vl to i64
  %a = call <vscale x 2 x i32> @llvm.riscv.vlse.nxv2i32(<vscale x 2 x i32> undef, ptr %p, i64 %s, i64 %1)
  %b = call <vscale x 2 x i32> @llvm.vp.select.nxv2i32(<vscale x 2 x i1> %m, <vscale x 2 x i32> %a, <vscale x 2 x i32> %passthru, i32 %vl)
  ret <vscale x 2 x i32> %b
}

; Test indexed load by riscv.vluxei
define <vscale x 2 x i32> @vpselect_vluxei(<vscale x 2 x i32> %passthru,  ptr %p, <vscale x 2 x i64> %idx, <vscale x 2 x i1> %m, i64 %s, i32 zeroext %vl) {
; CHECK-LABEL: vpselect_vluxei:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a2, e32, m1, ta, mu
; CHECK-NEXT:    vluxei64.v v8, (a0), v10, v0.t
; CHECK-NEXT:    ret
  %1 = zext i32 %vl to i64
  %a = call <vscale x 2 x i32> @llvm.riscv.vluxei.nxv2i32.nxv2i64(<vscale x 2 x i32> undef, ptr %p, <vscale x 2 x i64> %idx, i64 %1)
  %b = call <vscale x 2 x i32> @llvm.vp.select.nxv2i32(<vscale x 2 x i1> %m, <vscale x 2 x i32> %a, <vscale x 2 x i32> %passthru, i32 %vl)
  ret <vscale x 2 x i32> %b
}

; Test vector index by riscv.vid
define <vscale x 2 x i32> @vpselect_vid(<vscale x 2 x i32> %passthru, <vscale x 2 x i1> %m, i32 zeroext %vl) {
; CHECK-LABEL: vpselect_vid:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, ta, mu
; CHECK-NEXT:    vid.v v8, v0.t
; CHECK-NEXT:    ret
  %1 = zext i32 %vl to i64
  %a = call <vscale x 2 x i32> @llvm.riscv.vid.nxv2i32(<vscale x 2 x i32> undef, i64 %1)
  %b = call <vscale x 2 x i32> @llvm.vp.select.nxv2i32(<vscale x 2 x i1> %m, <vscale x 2 x i32> %a, <vscale x 2 x i32> %passthru, i32 %vl)
  ret <vscale x 2 x i32> %b
}

; Test riscv.viota
define <vscale x 2 x i32> @vpselect_viota(<vscale x 2 x i32> %passthru, <vscale x 2 x i1> %m, <vscale x 2 x i1> %vm, i32 zeroext %vl) {
; CHECK-LABEL: vpselect_viota:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, ta, ma
; CHECK-NEXT:    viota.m v10, v9
; CHECK-NEXT:    vmerge.vvm v8, v8, v10, v0
; CHECK-NEXT:    ret
  %1 = zext i32 %vl to i64
  %a = call <vscale x 2 x i32> @llvm.riscv.viota.nxv2i32(<vscale x 2 x i32> undef, <vscale x 2 x i1> %vm, i64 %1)
  %b = call <vscale x 2 x i32> @llvm.vp.select.nxv2i32(<vscale x 2 x i1> %m, <vscale x 2 x i32> %a, <vscale x 2 x i32> %passthru, i32 %vl)
  ret <vscale x 2 x i32> %b
}

; Test riscv.vfclass
define <vscale x 2 x i32> @vpselect_vflcass(<vscale x 2 x i32> %passthru, <vscale x 2 x float> %vf, <vscale x 2 x i1> %m, i32 zeroext %vl) {
; CHECK-LABEL: vpselect_vflcass:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, ta, mu
; CHECK-NEXT:    vfclass.v v8, v9, v0.t
; CHECK-NEXT:    ret
  %1 = zext i32 %vl to i64
  %a = call <vscale x 2 x i32> @llvm.riscv.vfclass.nxv2i32(<vscale x 2 x i32> undef, <vscale x 2 x float> %vf, i64 %1)
  %b = call <vscale x 2 x i32> @llvm.vp.select.nxv2i32(<vscale x 2 x i1> %m, <vscale x 2 x i32> %a, <vscale x 2 x i32> %passthru, i32 %vl)
  ret <vscale x 2 x i32> %b
}

; Test riscv.vfsqrt
define <vscale x 2 x float> @vpselect_vfsqrt(<vscale x 2 x float> %passthru, <vscale x 2 x float> %vf, <vscale x 2 x i1> %m, i32 zeroext %vl) {
; CHECK-LABEL: vpselect_vfsqrt:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, ta, mu
; CHECK-NEXT:    vfsqrt.v v8, v9, v0.t
; CHECK-NEXT:    ret
  %1 = zext i32 %vl to i64
  %a = call <vscale x 2 x float> @llvm.riscv.vfsqrt.nxv2f32(<vscale x 2 x float> undef, <vscale x 2 x float> %vf, i64 7, i64 %1)
  %b = call <vscale x 2 x float> @llvm.vp.select.nxv2f32(<vscale x 2 x i1> %m, <vscale x 2 x float> %a, <vscale x 2 x float> %passthru, i32 %vl)
  ret <vscale x 2 x float> %b
}

; Test reciprocal operation by riscv.vfrec7
define <vscale x 2 x float> @vpselect_vfrec7(<vscale x 2 x float> %passthru, <vscale x 2 x float> %vf, <vscale x 2 x i1> %m, i32 zeroext %vl) {
; CHECK-LABEL: vpselect_vfrec7:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, ta, mu
; CHECK-NEXT:    vfrec7.v v8, v9, v0.t
; CHECK-NEXT:    ret
  %1 = zext i32 %vl to i64
  %a = call <vscale x 2 x float> @llvm.riscv.vfrec7.nxv2f32(<vscale x 2 x float> undef, <vscale x 2 x float> %vf, i64 7, i64 %1)
  %b = call <vscale x 2 x float> @llvm.vp.select.nxv2f32(<vscale x 2 x i1> %m, <vscale x 2 x float> %a, <vscale x 2 x float> %passthru, i32 %vl)
  ret <vscale x 2 x float> %b
}

; Test slides
declare <vscale x 2 x i32> @llvm.riscv.vslideup.nxv2i32(<vscale x 2 x i32>, <vscale x 2 x i32>, i64, i64, i64)
define <vscale x 2 x i32> @vpselect_vslideup(<vscale x 2 x i32> %passthru, <vscale x 2 x i32> %v, i64 %x, <vscale x 2 x i1> %m, i32 zeroext %vl) {
; CHECK-LABEL: vpselect_vslideup:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a1, e32, m1, ta, mu
; CHECK-NEXT:    vslideup.vx v8, v9, a0, v0.t
; CHECK-NEXT:    ret
  %1 = zext i32 %vl to i64
  %a = call <vscale x 2 x i32> @llvm.riscv.vslideup.nxv2i32(<vscale x 2 x i32> undef, <vscale x 2 x i32> %v, i64 %x, i64 %1, i64 0)
  %b = call <vscale x 2 x i32> @llvm.vp.select.nxv2i32(<vscale x 2 x i1> %m, <vscale x 2 x i32> %a, <vscale x 2 x i32> %passthru, i32 %vl)
  ret <vscale x 2 x i32> %b
}

declare <vscale x 2 x i32> @llvm.riscv.vslidedown.nxv2i32(<vscale x 2 x i32>, <vscale x 2 x i32>, i64, i64, i64)
define <vscale x 2 x i32> @vpselect_vslidedown(<vscale x 2 x i32> %passthru, <vscale x 2 x i32> %v, i64 %x, <vscale x 2 x i1> %m, i32 zeroext %vl) {
; CHECK-LABEL: vpselect_vslidedown:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a1, e32, m1, ta, mu
; CHECK-NEXT:    vslidedown.vx v8, v9, a0, v0.t
; CHECK-NEXT:    ret
  %1 = zext i32 %vl to i64
  %a = call <vscale x 2 x i32> @llvm.riscv.vslidedown.nxv2i32(<vscale x 2 x i32> undef, <vscale x 2 x i32> %v, i64 %x, i64 %1, i64 0)
  %b = call <vscale x 2 x i32> @llvm.vp.select.nxv2i32(<vscale x 2 x i1> %m, <vscale x 2 x i32> %a, <vscale x 2 x i32> %passthru, i32 %vl)
  ret <vscale x 2 x i32> %b
}

declare <vscale x 2 x i32> @llvm.riscv.vslide1up.nxv2i32.i32(<vscale x 2 x i32>, <vscale x 2 x i32>, i32, i64)
define <vscale x 2 x i32> @vpselect_vslide1up(<vscale x 2 x i32> %passthru, <vscale x 2 x i32> %v, i32 %x, <vscale x 2 x i1> %m, i32 zeroext %vl) {
; CHECK-LABEL: vpselect_vslide1up:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a1, e32, m1, ta, mu
; CHECK-NEXT:    vslide1up.vx v8, v9, a0, v0.t
; CHECK-NEXT:    ret
  %1 = zext i32 %vl to i64
  %a = call <vscale x 2 x i32> @llvm.riscv.vslide1up.nxv2i32.i32(<vscale x 2 x i32> undef, <vscale x 2 x i32> %v, i32 %x, i64 %1)
  %b = call <vscale x 2 x i32> @llvm.vp.select.nxv2i32(<vscale x 2 x i1> %m, <vscale x 2 x i32> %a, <vscale x 2 x i32> %passthru, i32 %vl)
  ret <vscale x 2 x i32> %b
}

declare <vscale x 2 x i32> @llvm.riscv.vslide1down.nxv2i32.i32(<vscale x 2 x i32>, <vscale x 2 x i32>, i32, i64)
define <vscale x 2 x i32> @vpselect_vslide1down(<vscale x 2 x i32> %passthru, <vscale x 2 x i32> %v, i32 %x, <vscale x 2 x i1> %m, i32 zeroext %vl) {
; CHECK-LABEL: vpselect_vslide1down:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a1, e32, m1, ta, mu
; CHECK-NEXT:    vslide1down.vx v8, v9, a0, v0.t
; CHECK-NEXT:    ret
  %1 = zext i32 %vl to i64
  %a = call <vscale x 2 x i32> @llvm.riscv.vslide1down.nxv2i32.i32(<vscale x 2 x i32> undef, <vscale x 2 x i32> %v, i32 %x, i64 %1)
  %b = call <vscale x 2 x i32> @llvm.vp.select.nxv2i32(<vscale x 2 x i1> %m, <vscale x 2 x i32> %a, <vscale x 2 x i32> %passthru, i32 %vl)
  ret <vscale x 2 x i32> %b
}

; Test vector operations with VLMAX vector length.

; Test binary operator with vp.select and add.
define <vscale x 2 x i32> @vpselect_add(<vscale x 2 x i32> %passthru, <vscale x 2 x i32> %x, <vscale x 2 x i32> %y, <vscale x 2 x i1> %m, i32 zeroext %vl) {
; CHECK-LABEL: vpselect_add:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, ta, mu
; CHECK-NEXT:    vadd.vv v8, v9, v10, v0.t
; CHECK-NEXT:    ret
  %a = add <vscale x 2 x i32> %x, %y
  %b = call <vscale x 2 x i32> @llvm.vp.select.nxv2i32(<vscale x 2 x i1> %m, <vscale x 2 x i32> %a, <vscale x 2 x i32> %passthru, i32 %vl)
  ret <vscale x 2 x i32> %b
}

; Test binary operator with vp.select and fadd.
define <vscale x 2 x float> @vpselect_fadd(<vscale x 2 x float> %passthru, <vscale x 2 x float> %x, <vscale x 2 x float> %y, <vscale x 2 x i1> %m, i32 zeroext %vl) {
; CHECK-LABEL: vpselect_fadd:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, ta, mu
; CHECK-NEXT:    vfadd.vv v8, v9, v10, v0.t
; CHECK-NEXT:    ret
  %a = fadd <vscale x 2 x float> %x, %y
  %b = call <vscale x 2 x float> @llvm.vp.select.nxv2f32(<vscale x 2 x i1> %m, <vscale x 2 x float> %a, <vscale x 2 x float> %passthru, i32 %vl)
  ret <vscale x 2 x float> %b
}

; Test conversion by fptosi.
define <vscale x 2 x i16> @vpselect_fptosi(<vscale x 2 x i16> %passthru, <vscale x 2 x float> %x, <vscale x 2 x i1> %m, i32 zeroext %vl) {
; CHECK-LABEL: vpselect_fptosi:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e16, mf2, ta, mu
; CHECK-NEXT:    vfncvt.rtz.x.f.w v8, v9, v0.t
; CHECK-NEXT:    ret
  %a = fptosi <vscale x 2 x float> %x to <vscale x 2 x i16>
  %b = call <vscale x 2 x i16> @llvm.vp.select.nxv2i16(<vscale x 2 x i1> %m, <vscale x 2 x i16> %a, <vscale x 2 x i16> %passthru, i32 %vl)
  ret <vscale x 2 x i16> %b
}

; Test conversion by sitofp.
define <vscale x 2 x float> @vpselect_sitofp(<vscale x 2 x float> %passthru, <vscale x 2 x i64> %x, <vscale x 2 x i1> %m, i32 zeroext %vl) {
; CHECK-LABEL: vpselect_sitofp:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, ta, mu
; CHECK-NEXT:    vfncvt.f.x.w v8, v10, v0.t
; CHECK-NEXT:    ret
  %a = sitofp <vscale x 2 x i64> %x to <vscale x 2 x float>
  %b = call <vscale x 2 x float> @llvm.vp.select.nxv2f32(<vscale x 2 x i1> %m, <vscale x 2 x float> %a, <vscale x 2 x float> %passthru, i32 %vl)
  ret <vscale x 2 x float> %b
}

; Test float extension by fpext.
define <vscale x 2 x double> @vpselect_fpext(<vscale x 2 x double> %passthru, <vscale x 2 x float> %x, <vscale x 2 x i1> %m, i32 zeroext %vl) {
; CHECK-LABEL: vpselect_fpext:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, ta, mu
; CHECK-NEXT:    vfwcvt.f.f.v v8, v10, v0.t
; CHECK-NEXT:    ret
  %a = fpext <vscale x 2 x float> %x to <vscale x 2 x double>
  %b = call <vscale x 2 x double> @llvm.vp.select.nxv2f64(<vscale x 2 x i1> %m, <vscale x 2 x double> %a, <vscale x 2 x double> %passthru, i32 %vl)
  ret <vscale x 2 x double> %b
}

; Test float truncation by fptrunc.
define <vscale x 2 x float> @vpselect_fptrunc(<vscale x 2 x float> %passthru, <vscale x 2 x double> %x, <vscale x 2 x i1> %m, i32 zeroext %vl) {
; CHECK-LABEL: vpselect_fptrunc:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, ta, mu
; CHECK-NEXT:    vfncvt.f.f.w v8, v10, v0.t
; CHECK-NEXT:    ret
  %a = fptrunc <vscale x 2 x double> %x to <vscale x 2 x float>
  %b = call <vscale x 2 x float> @llvm.vp.select.nxv2f32(<vscale x 2 x i1> %m, <vscale x 2 x float> %a, <vscale x 2 x float> %passthru, i32 %vl)
  ret <vscale x 2 x float> %b
}

; Test integer extension by zext.
define <vscale x 2 x i32> @vpselect_zext(<vscale x 2 x i32> %passthru, <vscale x 2 x i8> %x, <vscale x 2 x i1> %m, i32 zeroext %vl) {
; CHECK-LABEL: vpselect_zext:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, ta, mu
; CHECK-NEXT:    vzext.vf4 v8, v9, v0.t
; CHECK-NEXT:    ret
  %a = zext <vscale x 2 x i8> %x to <vscale x 2 x i32>
  %b = call <vscale x 2 x i32> @llvm.vp.select.nxv2i32(<vscale x 2 x i1> %m, <vscale x 2 x i32> %a, <vscale x 2 x i32> %passthru, i32 %vl)
  ret <vscale x 2 x i32> %b
}

; Test integer truncation by trunc.
define <vscale x 2 x i32> @vpselect_trunc(<vscale x 2 x i32> %passthru, <vscale x 2 x i64> %x, <vscale x 2 x i1> %m, i32 zeroext %vl) {
; CHECK-LABEL: vpselect_trunc:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, ta, mu
; CHECK-NEXT:    vnsrl.wi v8, v10, 0, v0.t
; CHECK-NEXT:    ret
  %a = trunc <vscale x 2 x i64> %x to <vscale x 2 x i32>
  %b = call <vscale x 2 x i32> @llvm.vp.select.nxv2i32(<vscale x 2 x i1> %m, <vscale x 2 x i32> %a, <vscale x 2 x i32> %passthru, i32 %vl)
  ret <vscale x 2 x i32> %b
}

; Folding this would create a loop in the DAG becuase the chain from the VLE is
; used by the vssubu.
define void @test_dag_loop() {
; CHECK-LABEL: test_dag_loop:
; CHECK:       # %bb.0: # %entry
; CHECK-NEXT:    vsetivli zero, 0, e8, m4, ta, ma
; CHECK-NEXT:    vmclr.m v0
; CHECK-NEXT:    vmv.v.i v8, 0
; CHECK-NEXT:    vmv.v.i v12, 0
; CHECK-NEXT:    vsetvli zero, zero, e8, m4, tu, mu
; CHECK-NEXT:    vssubu.vx v12, v8, zero, v0.t
; CHECK-NEXT:    vsetvli zero, zero, e8, m4, ta, ma
; CHECK-NEXT:    vmseq.vv v0, v12, v8
; CHECK-NEXT:    vsetvli zero, zero, e16, m8, ta, ma
; CHECK-NEXT:    vmv.v.i v8, 0
; CHECK-NEXT:    vsetvli zero, zero, e16, m8, tu, mu
; CHECK-NEXT:    vle16.v v8, (zero), v0.t
; CHECK-NEXT:    vse16.v v8, (zero)
; CHECK-NEXT:    ret
entry:
  %0 = call <vscale x 32 x i16> @llvm.riscv.vle.nxv32i16.i64(<vscale x 32 x i16> undef, ptr null, i64 1)
  %1 = tail call <vscale x 32 x i8> @llvm.riscv.vssubu.mask.nxv32i8.i8.i64(<vscale x 32 x i8> zeroinitializer, <vscale x 32 x i8> zeroinitializer, i8 0, <vscale x 32 x i1> zeroinitializer, i64 0, i64 0)
  %2 = tail call <vscale x 32 x i1> @llvm.riscv.vmseq.nxv32i8.nxv32i8.i64(<vscale x 32 x i8> %1, <vscale x 32 x i8> zeroinitializer, i64 0)
  %3 = tail call <vscale x 32 x i16> @llvm.riscv.vmerge.nxv32i16.nxv32i16.i64(<vscale x 32 x i16> zeroinitializer, <vscale x 32 x i16> zeroinitializer, <vscale x 32 x i16> %0, <vscale x 32 x i1> %2, i64 1)
  call void @llvm.riscv.vse.nxv32i16.i64(<vscale x 32 x i16> %3, ptr null, i64 0)
  ret void
}

define <vscale x 1 x i16> @test_vaaddu(<vscale x 1 x i16> %var_11, i16 zeroext %var_9, <vscale x 1 x i1> %var_5, <vscale x 1 x i16> %var_0) {
; CHECK-LABEL: test_vaaddu:
; CHECK:       # %bb.0: # %entry
; CHECK-NEXT:    csrwi vxrm, 0
; CHECK-NEXT:    vsetivli zero, 3, e16, mf4, ta, mu
; CHECK-NEXT:    vaaddu.vx v9, v8, a0, v0.t
; CHECK-NEXT:    vmv1r.v v8, v9
; CHECK-NEXT:    ret
entry:
  %0 = tail call <vscale x 1 x i16> @llvm.riscv.vaaddu.nxv1i16.i16.i64(<vscale x 1 x i16> poison, <vscale x 1 x i16> %var_11, i16 %var_9, i64 0, i64 3)
  %1 = tail call <vscale x 1 x i16> @llvm.riscv.vmerge.nxv1i16.nxv1i16.i64(<vscale x 1 x i16> poison, <vscale x 1 x i16> %var_0, <vscale x 1 x i16> %0, <vscale x 1 x i1> %var_5, i64 3)
  ret <vscale x 1 x i16> %1
}

; Test reductions don't have a vmerge folded into them, since the mask affects
; the result.

declare <vscale x 2 x i32> @llvm.riscv.vredsum.nxv2i32.nxv2i32(
    <vscale x 2 x i32>,
    <vscale x 2 x i32>,
    <vscale x 2 x i32>,
    i64)

define <vscale x 2 x i32> @vredsum(<vscale x 2 x i32> %passthru, <vscale x 2 x i32> %x, <vscale x 2 x i32> %y, <vscale x 2 x i1> %m, i64 %vl) {
; CHECK-LABEL: vredsum:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, tu, ma
; CHECK-NEXT:    vmv1r.v v11, v8
; CHECK-NEXT:    vredsum.vs v11, v9, v10
; CHECK-NEXT:    vmerge.vvm v8, v8, v11, v0
; CHECK-NEXT:    ret
  %a = call <vscale x 2 x i32> @llvm.riscv.vredsum.nxv2i32.nxv2i32(
    <vscale x 2 x i32> %passthru,
    <vscale x 2 x i32> %x,
    <vscale x 2 x i32> %y,
    i64 %vl)
  %b = call <vscale x 2 x i32> @llvm.riscv.vmerge.nxv2i32.nxv2i32(<vscale x 2 x i32> %passthru, <vscale x 2 x i32> %passthru, <vscale x 2 x i32> %a, <vscale x 2 x i1> %m, i64 %vl)
  ret <vscale x 2 x i32> %b
}

declare <vscale x 2 x float> @llvm.riscv.vfredusum.nxv2f32.nxv2f32(
    <vscale x 2 x float>,
    <vscale x 2 x float>,
    <vscale x 2 x float>,
    i64, i64)

define <vscale x 2 x float> @vfredusum(<vscale x 2 x float> %passthru, <vscale x 2 x float> %x, <vscale x 2 x float> %y, <vscale x 2 x i1> %m, i64 %vl) {
; CHECK-LABEL: vfredusum:
; CHECK:       # %bb.0:
; CHECK-NEXT:    fsrmi a1, 0
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, tu, ma
; CHECK-NEXT:    vmv1r.v v11, v8
; CHECK-NEXT:    vfredusum.vs v11, v9, v10
; CHECK-NEXT:    vmerge.vvm v8, v8, v11, v0
; CHECK-NEXT:    fsrm a1
; CHECK-NEXT:    ret
  %a = call <vscale x 2 x float> @llvm.riscv.vfredusum.nxv2f32.nxv2f32(
    <vscale x 2 x float> %passthru,
    <vscale x 2 x float> %x,
    <vscale x 2 x float> %y,
    i64 0, i64 %vl)
  %b = call <vscale x 2 x float> @llvm.riscv.vmerge.nxv2f32.nxv2f32(<vscale x 2 x float> %passthru, <vscale x 2 x float> %passthru, <vscale x 2 x float> %a, <vscale x 2 x i1> %m, i64 %vl)
  ret <vscale x 2 x float> %b
}

; However we can fold it in if the mask is all ones.
define <vscale x 2 x i32> @vredsum_allones_mask(<vscale x 2 x i32> %passthru, <vscale x 2 x i32> %x, <vscale x 2 x i32> %y, i64 %vl) {
; CHECK-LABEL: vredsum_allones_mask:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, tu, ma
; CHECK-NEXT:    vredsum.vs v8, v9, v10
; CHECK-NEXT:    ret
  %a = call <vscale x 2 x i32> @llvm.riscv.vredsum.nxv2i32.nxv2i32(
    <vscale x 2 x i32> %passthru,
    <vscale x 2 x i32> %x,
    <vscale x 2 x i32> %y,
    i64 %vl)
  %b = call <vscale x 2 x i32> @llvm.riscv.vmerge.nxv2i32.nxv2i32(<vscale x 2 x i32> %passthru, <vscale x 2 x i32> %passthru, <vscale x 2 x i32> %a, <vscale x 2 x i1> splat (i1 -1), i64 %vl)
  ret <vscale x 2 x i32> %b
}

define <vscale x 2 x float> @vfredusum_allones_mask(<vscale x 2 x float> %passthru, <vscale x 2 x float> %x, <vscale x 2 x float> %y, i64 %vl) {
; CHECK-LABEL: vfredusum_allones_mask:
; CHECK:       # %bb.0:
; CHECK-NEXT:    fsrmi a1, 0
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, tu, ma
; CHECK-NEXT:    vfredusum.vs v8, v9, v10
; CHECK-NEXT:    fsrm a1
; CHECK-NEXT:    ret
  %a = call <vscale x 2 x float> @llvm.riscv.vfredusum.nxv2f32.nxv2f32(
    <vscale x 2 x float> %passthru,
    <vscale x 2 x float> %x,
    <vscale x 2 x float> %y,
    i64 0, i64 %vl)
  %b = call <vscale x 2 x float> @llvm.riscv.vmerge.nxv2f32.nxv2f32(<vscale x 2 x float> %passthru, <vscale x 2 x float> %passthru, <vscale x 2 x float> %a, <vscale x 2 x i1> splat (i1 -1), i64 %vl)
  ret <vscale x 2 x float> %b
}

define <vscale x 2 x i32> @unfoldable_vredsum_allones_mask_diff_vl(<vscale x 2 x i32> %passthru, <vscale x 2 x i32> %x, <vscale x 2 x i32> %y) {
; CHECK-LABEL: unfoldable_vredsum_allones_mask_diff_vl:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli a0, zero, e32, m1, tu, ma
; CHECK-NEXT:    vmv1r.v v11, v8
; CHECK-NEXT:    vredsum.vs v11, v9, v10
; CHECK-NEXT:    vsetivli zero, 1, e32, m1, tu, ma
; CHECK-NEXT:    vmv.v.v v8, v11
; CHECK-NEXT:    ret
  %a = call <vscale x 2 x i32> @llvm.riscv.vredsum.nxv2i32.nxv2i32(
    <vscale x 2 x i32> %passthru,
    <vscale x 2 x i32> %x,
    <vscale x 2 x i32> %y,
    i64 -1)
  %b = call <vscale x 2 x i32> @llvm.riscv.vmerge.nxv2i32.nxv2i32(<vscale x 2 x i32> %passthru, <vscale x 2 x i32> %passthru, <vscale x 2 x i32> %a, <vscale x 2 x i1> splat (i1 -1), i64 1)
  ret <vscale x 2 x i32> %b
}

declare <vscale x 32 x i16> @llvm.riscv.vle.nxv32i16.i64(<vscale x 32 x i16>, ptr nocapture, i64)
declare <vscale x 32 x i8> @llvm.riscv.vssubu.mask.nxv32i8.i8.i64(<vscale x 32 x i8>, <vscale x 32 x i8>, i8, <vscale x 32 x i1>, i64, i64 immarg)
declare <vscale x 32 x i1> @llvm.riscv.vmseq.nxv32i8.nxv32i8.i64(<vscale x 32 x i8>, <vscale x 32 x i8>, i64)
declare <vscale x 32 x i16> @llvm.riscv.vmerge.nxv32i16.nxv32i16.i64(<vscale x 32 x i16>, <vscale x 32 x i16>, <vscale x 32 x i16>, <vscale x 32 x i1>, i64)
declare void @llvm.riscv.vse.nxv32i16.i64(<vscale x 32 x i16>, ptr nocapture, i64)
declare <vscale x 1 x i16> @llvm.riscv.vaaddu.nxv1i16.i16.i64(<vscale x 1 x i16>, <vscale x 1 x i16>, i16, i64 immarg, i64)
declare <vscale x 1 x i16> @llvm.riscv.vmerge.nxv1i16.nxv1i16.i64(<vscale x 1 x i16>, <vscale x 1 x i16>, <vscale x 1 x i16>, <vscale x 1 x i1>, i64)

; Tests for folding vmerge into its ops when their VLs differ

declare <vscale x 2 x i32> @llvm.riscv.vadd.nxv2i32.nxv2i32(<vscale x 2 x i32>, <vscale x 2 x i32>, <vscale x 2 x i32>, i64)
declare <vscale x 2 x i32> @llvm.riscv.vmerge.nxv2i32.nxv2i32(<vscale x 2 x i32>, <vscale x 2 x i32>, <vscale x 2 x i32>, <vscale x 2 x i1>, i64)

; Can fold with VL=2
define <vscale x 2 x i32> @vmerge_smaller_vl_same_passthru(<vscale x 2 x i32> %passthru, <vscale x 2 x i32> %x, <vscale x 2 x i32> %y, <vscale x 2 x i1> %m) {
; CHECK-LABEL: vmerge_smaller_vl_same_passthru:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetivli zero, 2, e32, m1, tu, mu
; CHECK-NEXT:    vadd.vv v8, v9, v10, v0.t
; CHECK-NEXT:    ret
  %a = call <vscale x 2 x i32> @llvm.riscv.vadd.nxv2i32.nxv2i32(<vscale x 2 x i32> %passthru, <vscale x 2 x i32> %x, <vscale x 2 x i32> %y, i64 4)
  %b = call <vscale x 2 x i32> @llvm.riscv.vmerge.nxv2i32.nxv2i32(<vscale x 2 x i32> %passthru, <vscale x 2 x i32> %passthru, <vscale x 2 x i32> %a, <vscale x 2 x i1> %m, i64 2)
  ret <vscale x 2 x i32> %b
}

; Can fold with VL=2
define <vscale x 2 x i32> @vmerge_larger_vl_same_passthru(<vscale x 2 x i32> %passthru, <vscale x 2 x i32> %x, <vscale x 2 x i32> %y, <vscale x 2 x i1> %m) {
; CHECK-LABEL: vmerge_larger_vl_same_passthru:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetivli zero, 2, e32, m1, tu, mu
; CHECK-NEXT:    vadd.vv v8, v9, v10, v0.t
; CHECK-NEXT:    ret
  %a = call <vscale x 2 x i32> @llvm.riscv.vadd.nxv2i32.nxv2i32(<vscale x 2 x i32> %passthru, <vscale x 2 x i32> %x, <vscale x 2 x i32> %y, i64 2)
  %b = call <vscale x 2 x i32> @llvm.riscv.vmerge.nxv2i32.nxv2i32(<vscale x 2 x i32> %passthru, <vscale x 2 x i32> %passthru, <vscale x 2 x i32> %a, <vscale x 2 x i1> %m, i64 3)
  ret <vscale x 2 x i32> %b
}

; Can fold with VL=2
define <vscale x 2 x i32> @vmerge_smaller_vl_different_passthru(<vscale x 2 x i32> %pt1, <vscale x 2 x i32> %pt2, <vscale x 2 x i32> %x, <vscale x 2 x i32> %y, <vscale x 2 x i1> %m) {
; CHECK-LABEL: vmerge_smaller_vl_different_passthru:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetivli zero, 2, e32, m1, tu, ma
; CHECK-NEXT:    vadd.vv v8, v10, v11
; CHECK-NEXT:    vmerge.vvm v9, v9, v8, v0
; CHECK-NEXT:    vmv1r.v v8, v9
; CHECK-NEXT:    ret
  %a = call <vscale x 2 x i32> @llvm.riscv.vadd.nxv2i32.nxv2i32(<vscale x 2 x i32> %pt1, <vscale x 2 x i32> %x, <vscale x 2 x i32> %y, i64 3)
  %b = call <vscale x 2 x i32> @llvm.riscv.vmerge.nxv2i32.nxv2i32(<vscale x 2 x i32> %pt2, <vscale x 2 x i32> %pt2, <vscale x 2 x i32> %a, <vscale x 2 x i1> %m, i64 2)
  ret <vscale x 2 x i32> %b
}

; Can't fold this because we need to take elements from both %pt1 and %pt2
define <vscale x 2 x i32> @vmerge_larger_vl_different_passthru(<vscale x 2 x i32> %pt1, <vscale x 2 x i32> %pt2, <vscale x 2 x i32> %x, <vscale x 2 x i32> %y, <vscale x 2 x i1> %m) {
; CHECK-LABEL: vmerge_larger_vl_different_passthru:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetivli zero, 2, e32, m1, tu, ma
; CHECK-NEXT:    vadd.vv v8, v10, v11
; CHECK-NEXT:    vsetivli zero, 3, e32, m1, tu, ma
; CHECK-NEXT:    vmerge.vvm v9, v9, v8, v0
; CHECK-NEXT:    vmv1r.v v8, v9
; CHECK-NEXT:    ret
  %a = call <vscale x 2 x i32> @llvm.riscv.vadd.nxv2i32.nxv2i32(<vscale x 2 x i32> %pt1, <vscale x 2 x i32> %x, <vscale x 2 x i32> %y, i64 2)
  %b = call <vscale x 2 x i32> @llvm.riscv.vmerge.nxv2i32.nxv2i32(<vscale x 2 x i32> %pt2, <vscale x 2 x i32> %pt2, <vscale x 2 x i32> %a, <vscale x 2 x i1> %m, i64 3)
  ret <vscale x 2 x i32> %b
}

; Can fold with VL=2
define <vscale x 2 x i32> @vmerge_smaller_vl_poison_passthru(<vscale x 2 x i32> %passthru, <vscale x 2 x i32> %x, <vscale x 2 x i32> %y, <vscale x 2 x i1> %m) {
; CHECK-LABEL: vmerge_smaller_vl_poison_passthru:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetivli zero, 2, e32, m1, tu, mu
; CHECK-NEXT:    vadd.vv v8, v9, v10, v0.t
; CHECK-NEXT:    ret
  %a = call <vscale x 2 x i32> @llvm.riscv.vadd.nxv2i32.nxv2i32(<vscale x 2 x i32> poison, <vscale x 2 x i32> %x, <vscale x 2 x i32> %y, i64 3)
  %b = call <vscale x 2 x i32> @llvm.riscv.vmerge.nxv2i32.nxv2i32(<vscale x 2 x i32> %passthru, <vscale x 2 x i32> %passthru, <vscale x 2 x i32> %a, <vscale x 2 x i1> %m, i64 2)
  ret <vscale x 2 x i32> %b
}

; Can fold with VL=2
define <vscale x 2 x i32> @vmerge_larger_vl_poison_passthru(<vscale x 2 x i32> %passthru, <vscale x 2 x i32> %x, <vscale x 2 x i32> %y, <vscale x 2 x i1> %m) {
; CHECK-LABEL: vmerge_larger_vl_poison_passthru:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetivli zero, 2, e32, m1, tu, mu
; CHECK-NEXT:    vadd.vv v8, v9, v10, v0.t
; CHECK-NEXT:    ret
  %a = call <vscale x 2 x i32> @llvm.riscv.vadd.nxv2i32.nxv2i32(<vscale x 2 x i32> poison, <vscale x 2 x i32> %x, <vscale x 2 x i32> %y, i64 2)
  %b = call <vscale x 2 x i32> @llvm.riscv.vmerge.nxv2i32.nxv2i32(<vscale x 2 x i32> %passthru, <vscale x 2 x i32> %passthru, <vscale x 2 x i32> %a, <vscale x 2 x i1> %m, i64 3)
  ret <vscale x 2 x i32> %b
}

; The vadd's new policy should be tail undisturbed since the false op of the
; vmerge moves from the the body to the tail, and we need to preserve it.
define <vscale x 2 x i32> @vmerge_larger_vl_false_becomes_tail(<vscale x 2 x i32> %false, <vscale x 2 x i32> %x, <vscale x 2 x i32> %y, <vscale x 2 x i1> %m) {
; CHECK-LABEL: vmerge_larger_vl_false_becomes_tail:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetivli zero, 2, e32, m1, tu, mu
; CHECK-NEXT:    vadd.vv v8, v9, v10, v0.t
; CHECK-NEXT:    ret
  %a = call <vscale x 2 x i32> @llvm.riscv.vadd.nxv2i32.nxv2i32(<vscale x 2 x i32> poison, <vscale x 2 x i32> %x, <vscale x 2 x i32> %y, i64 2)
  %b = call <vscale x 2 x i32> @llvm.riscv.vmerge.nxv2i32.nxv2i32(<vscale x 2 x i32> poison, <vscale x 2 x i32> %false, <vscale x 2 x i32> %a, <vscale x 2 x i1> %m, i64 3)
  ret <vscale x 2 x i32> %b
}

; Test widening pseudos with their TIED variant (passthru same as first op).
define <vscale x 2 x i64> @vpmerge_vwsub.w_tied(<vscale x 2 x i64> %passthru, <vscale x 2 x i64> %x, <vscale x 2 x i32> %y, <vscale x 2 x i1> %mask, i32 zeroext %vl) {
; CHECK-LABEL: vpmerge_vwsub.w_tied:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, tu, mu
; CHECK-NEXT:    vwsub.wv v8, v8, v12, v0.t
; CHECK-NEXT:    ret
  %vl.zext = zext i32 %vl to i64
  %a = call <vscale x 2 x i64> @llvm.riscv.vwsub.w.nxv2i64.nxv2i32(<vscale x 2 x i64> %passthru, <vscale x 2 x i64> %passthru, <vscale x 2 x i32> %y, i64 %vl.zext)
  %b = call <vscale x 2 x i64> @llvm.vp.merge.nxv2i64(<vscale x 2 x i1> %mask, <vscale x 2 x i64> %a, <vscale x 2 x i64> %passthru, i32 %vl)
  ret <vscale x 2 x i64> %b
}

define <vscale x 2 x double> @vpmerge_vfwsub.w_tied(<vscale x 2 x double> %passthru, <vscale x 2 x double> %x, <vscale x 2 x float> %y, <vscale x 2 x i1> %mask, i32 zeroext %vl) {
; CHECK-LABEL: vpmerge_vfwsub.w_tied:
; CHECK:       # %bb.0:
; CHECK-NEXT:    fsrmi a1, 1
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, tu, mu
; CHECK-NEXT:    vfwsub.wv v8, v8, v12, v0.t
; CHECK-NEXT:    fsrm a1
; CHECK-NEXT:    ret
  %vl.zext = zext i32 %vl to i64
  %a = call <vscale x 2 x double> @llvm.riscv.vfwsub.w.nxv2f64.nxv2f32(<vscale x 2 x double> %passthru, <vscale x 2 x double> %passthru, <vscale x 2 x float> %y, i64 1, i64 %vl.zext)
  %b = call <vscale x 2 x double> @llvm.vp.merge.nxv2f64(<vscale x 2 x i1> %mask, <vscale x 2 x double> %a, <vscale x 2 x double> %passthru, i32 %vl)
  ret <vscale x 2 x double> %b
}

define <vscale x 2 x i32> @true_tied_dest_vmerge_implicit_passthru(<vscale x 2 x i32> %passthru, <vscale x 2 x i32> %x, <vscale x 2 x i32> %y, <vscale x 2 x i1> %m, i64 %avl) {
; CHECK-LABEL: true_tied_dest_vmerge_implicit_passthru:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, ta, mu
; CHECK-NEXT:    vmacc.vv v8, v9, v10, v0.t
; CHECK-NEXT:    ret
  %a = call <vscale x 2 x i32> @llvm.riscv.vmacc.nxv2i32.nxv2i32(<vscale x 2 x i32> %passthru, <vscale x 2 x i32> %x, <vscale x 2 x i32> %y, i64 %avl, i64 0)
  %b = call <vscale x 2 x i32> @llvm.riscv.vmerge.nxv2i32.nxv2i32(
    <vscale x 2 x i32> poison,
    <vscale x 2 x i32> %passthru,
    <vscale x 2 x i32> %a,
    <vscale x 2 x i1> %m,
    i64 %avl
  )
  ret <vscale x 2 x i32> %b
}

define <vscale x 2 x i32> @true_mask_vmerge_implicit_passthru(<vscale x 2 x i32> %passthru, <vscale x 2 x i32> %x, <vscale x 2 x i32> %y, <vscale x 2 x i1> %m, i64 %avl) {
; CHECK-LABEL: true_mask_vmerge_implicit_passthru:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, ta, mu
; CHECK-NEXT:    vadd.vv v8, v9, v10, v0.t
; CHECK-NEXT:    ret
  %a = call <vscale x 2 x i32> @llvm.riscv.vadd.mask.nxv2i32.nxv2i32(<vscale x 2 x i32> %passthru, <vscale x 2 x i32> %x, <vscale x 2 x i32> %y, <vscale x 2 x i1> %m, i64 %avl, i64 0)
  %b = call <vscale x 2 x i32> @llvm.riscv.vmerge.nxv2i32.nxv2i32(
    <vscale x 2 x i32> poison,
    <vscale x 2 x i32> %passthru,
    <vscale x 2 x i32> %a,
    <vscale x 2 x i1> shufflevector(<vscale x 2 x i1> insertelement(<vscale x 2 x i1> poison, i1 true, i32 0), <vscale x 2 x i1> poison, <vscale x 2 x i32> zeroinitializer),
    i64 %avl
  )
  ret <vscale x 2 x i32> %b
}


define <vscale x 2 x i32> @unfoldable_mismatched_sew(<vscale x 2 x i32> %passthru, <vscale x 1 x i64> %x, <vscale x 1 x i64> %y, <vscale x 2 x i1> %mask, i64 %avl) {
; CHECK-LABEL: unfoldable_mismatched_sew:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli zero, a0, e64, m1, ta, ma
; CHECK-NEXT:    vadd.vv v9, v9, v10
; CHECK-NEXT:    vsetvli zero, a0, e32, m1, tu, ma
; CHECK-NEXT:    vmv.v.v v8, v9
; CHECK-NEXT:    ret
  %a = call <vscale x 1 x i64> @llvm.riscv.vadd.nxv1i64.nxv1i64(<vscale x 1 x i64> poison, <vscale x 1 x i64> %x, <vscale x 1 x i64> %y, i64 %avl)
  %a.bitcast = bitcast <vscale x 1 x i64> %a to <vscale x 2 x i32>
  %b = call <vscale x 2 x i32> @llvm.riscv.vmerge.nxv2i32.nxv2i32(
    <vscale x 2 x i32> %passthru,
    <vscale x 2 x i32> %passthru,
    <vscale x 2 x i32> %a.bitcast,
    <vscale x 2 x i1> splat (i1 true),
    i64 %avl
  )
  ret <vscale x 2 x i32> %b
}