; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple=riscv32 -mattr=+experimental-p,+m,+zbb \
; RUN:   -verify-machineinstrs < %s | \
; RUN:   FileCheck --check-prefixes=CHECK-RV32 %s
; RUN: llc -mtriple=riscv64 -mattr=+experimental-p,+m,+zbb \
; RUN:   -verify-machineinstrs < %s | \
; RUN:   FileCheck --check-prefixes=CHECK-RV64 %s

; Bitcast between i64 and v8i8/v4i16/v2i32 on RV32 must be a register-level
; no-op so that paired-register arithmetic patterns match after the bitcast.

define i64 @bitcast_roundtrip_v8i8(i64 %a) {
; CHECK-RV32-LABEL: bitcast_roundtrip_v8i8:
; CHECK-RV32:       # %bb.0:
; CHECK-RV32-NEXT:    ret
;
; CHECK-RV64-LABEL: bitcast_roundtrip_v8i8:
; CHECK-RV64:       # %bb.0:
; CHECK-RV64-NEXT:    ret
  %v = bitcast i64 %a to <8 x i8>
  %r = bitcast <8 x i8> %v to i64
  ret i64 %r
}

define i64 @bitcast_roundtrip_v4i16(i64 %a) {
; CHECK-RV32-LABEL: bitcast_roundtrip_v4i16:
; CHECK-RV32:       # %bb.0:
; CHECK-RV32-NEXT:    ret
;
; CHECK-RV64-LABEL: bitcast_roundtrip_v4i16:
; CHECK-RV64:       # %bb.0:
; CHECK-RV64-NEXT:    ret
  %v = bitcast i64 %a to <4 x i16>
  %r = bitcast <4 x i16> %v to i64
  ret i64 %r
}

define i64 @bitcast_roundtrip_v2i32(i64 %a) {
; CHECK-RV32-LABEL: bitcast_roundtrip_v2i32:
; CHECK-RV32:       # %bb.0:
; CHECK-RV32-NEXT:    ret
;
; CHECK-RV64-LABEL: bitcast_roundtrip_v2i32:
; CHECK-RV64:       # %bb.0:
; CHECK-RV64-NEXT:    ret
  %v = bitcast i64 %a to <2 x i32>
  %r = bitcast <2 x i32> %v to i64
  ret i64 %r
}

define i64 @add_v8i8_via_bitcast(i64 %a, i64 %b) {
; CHECK-RV32-LABEL: add_v8i8_via_bitcast:
; CHECK-RV32:       # %bb.0:
; CHECK-RV32-NEXT:    padd.db a0, a0, a2
; CHECK-RV32-NEXT:    ret
;
; CHECK-RV64-LABEL: add_v8i8_via_bitcast:
; CHECK-RV64:       # %bb.0:
; CHECK-RV64-NEXT:    padd.b a0, a0, a1
; CHECK-RV64-NEXT:    ret
  %va = bitcast i64 %a to <8 x i8>
  %vb = bitcast i64 %b to <8 x i8>
  %r = add <8 x i8> %va, %vb
  %ret = bitcast <8 x i8> %r to i64
  ret i64 %ret
}

define i64 @add_v4i16_via_bitcast(i64 %a, i64 %b) {
; CHECK-RV32-LABEL: add_v4i16_via_bitcast:
; CHECK-RV32:       # %bb.0:
; CHECK-RV32-NEXT:    padd.dh a0, a0, a2
; CHECK-RV32-NEXT:    ret
;
; CHECK-RV64-LABEL: add_v4i16_via_bitcast:
; CHECK-RV64:       # %bb.0:
; CHECK-RV64-NEXT:    padd.h a0, a0, a1
; CHECK-RV64-NEXT:    ret
  %va = bitcast i64 %a to <4 x i16>
  %vb = bitcast i64 %b to <4 x i16>
  %r = add <4 x i16> %va, %vb
  %ret = bitcast <4 x i16> %r to i64
  ret i64 %ret
}

define i64 @add_v2i32_via_bitcast(i64 %a, i64 %b) {
; CHECK-RV32-LABEL: add_v2i32_via_bitcast:
; CHECK-RV32:       # %bb.0:
; CHECK-RV32-NEXT:    padd.dw a0, a0, a2
; CHECK-RV32-NEXT:    ret
;
; CHECK-RV64-LABEL: add_v2i32_via_bitcast:
; CHECK-RV64:       # %bb.0:
; CHECK-RV64-NEXT:    padd.w a0, a0, a1
; CHECK-RV64-NEXT:    ret
  %va = bitcast i64 %a to <2 x i32>
  %vb = bitcast i64 %b to <2 x i32>
  %r = add <2 x i32> %va, %vb
  %ret = bitcast <2 x i32> %r to i64
  ret i64 %ret
}