llvm/test/CodeGen/RISCV/rvp-reverse.ll

; 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 %s --check-prefixes=CHECK,RV32
; RUN: llc -mtriple=riscv64 -mattr=+experimental-p,+m,+zbb \
; RUN:   -verify-machineinstrs < %s | \
; RUN:   FileCheck %s --check-prefixes=CHECK,RV64

define <4 x i8> @test_prev_v4i8(<4 x i8> %a) {
; RV32-LABEL: test_prev_v4i8:
; RV32:       # %bb.0:
; RV32-NEXT:    rev8 a0, a0
; RV32-NEXT:    ret
;
; RV64-LABEL: test_prev_v4i8:
; RV64:       # %bb.0:
; RV64-NEXT:    rev8 a0, a0
; RV64-NEXT:    srli a0, a0, 32
; RV64-NEXT:    ret
  %r = shufflevector <4 x i8> %a, <4 x i8> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>
  ret <4 x i8> %r
}

define <2 x i16> @test_prev_v2i16(<2 x i16> %a) {
; RV32-LABEL: test_prev_v2i16:
; RV32:       # %bb.0:
; RV32-NEXT:    ppairoe.h a0, a0, a0
; RV32-NEXT:    ret
;
; RV64-LABEL: test_prev_v2i16:
; RV64:       # %bb.0:
; RV64-NEXT:    ppairoe.h a0, a0, a0
; RV64-NEXT:    ret
  %r = shufflevector <2 x i16> %a, <2 x i16> poison, <2 x i32> <i32 1, i32 0>
  ret <2 x i16> %r
}

define <8 x i8> @test_prev_v8i8(<8 x i8> %a) {
; RV32-LABEL: test_prev_v8i8:
; RV32:       # %bb.0:
; RV32-NEXT:    rev8 a2, a0
; RV32-NEXT:    rev8 a0, a1
; RV32-NEXT:    mv a1, a2
; RV32-NEXT:    ret
;
; RV64-LABEL: test_prev_v8i8:
; RV64:       # %bb.0:
; RV64-NEXT:    rev8 a0, a0
; RV64-NEXT:    ret
  %r = shufflevector <8 x i8> %a, <8 x i8> poison, <8 x i32> <i32 7, i32 6, i32 5, i32 4, i32 3, i32 2, i32 1, i32 0>
  ret <8 x i8> %r
}

define <4 x i16> @test_prev_v4i16(<4 x i16> %a) {
; RV32-LABEL: test_prev_v4i16:
; RV32:       # %bb.0:
; RV32-NEXT:    ppairoe.h a2, a0, a0
; RV32-NEXT:    ppairoe.h a0, a1, a1
; RV32-NEXT:    mv a1, a2
; RV32-NEXT:    ret
;
; RV64-LABEL: test_prev_v4i16:
; RV64:       # %bb.0:
; RV64-NEXT:    rev16 a0, a0
; RV64-NEXT:    ret
  %r = shufflevector <4 x i16> %a, <4 x i16> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>
  ret <4 x i16> %r
}

define <2 x i32> @test_prev_v2i32(<2 x i32> %a) {
; RV32-LABEL: test_prev_v2i32:
; RV32:       # %bb.0:
; RV32-NEXT:    mv a2, a0
; RV32-NEXT:    mv a0, a1
; RV32-NEXT:    mv a1, a2
; RV32-NEXT:    ret
;
; RV64-LABEL: test_prev_v2i32:
; RV64:       # %bb.0:
; RV64-NEXT:    ppairoe.w a0, a0, a0
; RV64-NEXT:    ret
  %r = shufflevector <2 x i32> %a, <2 x i32> poison, <2 x i32> <i32 1, i32 0>
  ret <2 x i32> %r
}
;; NOTE: These prefixes are unused and the list is autogenerated. Do not add tests below this line:
; CHECK: {{.*}}