test/CodeGen/WebAssembly/simd-widening.ll

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mattr=+simd128 | FileCheck %s

;; Test that SIMD widening operations can be successfully selected

target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
target triple = "wasm32-unknown-unknown"

define <8 x i16> @widen_low_i8x16_s(<16 x i8> %v) {
; CHECK-LABEL: widen_low_i8x16_s:
; CHECK:         .functype widen_low_i8x16_s (v128) -> (v128)
; CHECK-NEXT:  # %bb.0:
; CHECK-NEXT:    local.get 0
; CHECK-NEXT:    i16x8.widen_low_i8x16_s
; CHECK-NEXT:    # fallthrough-return
  %low = shufflevector <16 x i8> %v, <16 x i8> undef,
           <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7>
  %widened = sext <8 x i8> %low to <8 x i16>
  ret <8 x i16> %widened
}

define <8 x i16> @widen_low_i8x16_u(<16 x i8> %v) {
; CHECK-LABEL: widen_low_i8x16_u:
; CHECK:         .functype widen_low_i8x16_u (v128) -> (v128)
; CHECK-NEXT:  # %bb.0:
; CHECK-NEXT:    local.get 0
; CHECK-NEXT:    i16x8.widen_low_i8x16_u
; CHECK-NEXT:    # fallthrough-return
  %low = shufflevector <16 x i8> %v, <16 x i8> undef,
           <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7>
  %widened = zext <8 x i8> %low to <8 x i16>
  ret <8 x i16> %widened
}

define <8 x i16> @widen_high_i8x16_s(<16 x i8> %v) {
; CHECK-LABEL: widen_high_i8x16_s:
; CHECK:         .functype widen_high_i8x16_s (v128) -> (v128)
; CHECK-NEXT:  # %bb.0:
; CHECK-NEXT:    local.get 0
; CHECK-NEXT:    i16x8.widen_high_i8x16_s
; CHECK-NEXT:    # fallthrough-return
  %low = shufflevector <16 x i8> %v, <16 x i8> undef,
           <8 x i32> <i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
  %widened = sext <8 x i8> %low to <8 x i16>
  ret <8 x i16> %widened
}

define <8 x i16> @widen_high_i8x16_u(<16 x i8> %v) {
; CHECK-LABEL: widen_high_i8x16_u:
; CHECK:         .functype widen_high_i8x16_u (v128) -> (v128)
; CHECK-NEXT:  # %bb.0:
; CHECK-NEXT:    local.get 0
; CHECK-NEXT:    i16x8.widen_high_i8x16_u
; CHECK-NEXT:    # fallthrough-return
  %low = shufflevector <16 x i8> %v, <16 x i8> undef,
           <8 x i32> <i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
  %widened = zext <8 x i8> %low to <8 x i16>
  ret <8 x i16> %widened
}

define <4 x i32> @widen_low_i16x8_s(<8 x i16> %v) {
; CHECK-LABEL: widen_low_i16x8_s:
; CHECK:         .functype widen_low_i16x8_s (v128) -> (v128)
; CHECK-NEXT:  # %bb.0:
; CHECK-NEXT:    local.get 0
; CHECK-NEXT:    i32x4.widen_low_i16x8_s
; CHECK-NEXT:    # fallthrough-return
  %low = shufflevector <8 x i16> %v, <8 x i16> undef,
           <4 x i32> <i32 0, i32 1, i32 2, i32 3>
  %widened = sext <4 x i16> %low to <4 x i32>
  ret <4 x i32> %widened
}

define <4 x i32> @widen_low_i16x8_u(<8 x i16> %v) {
; CHECK-LABEL: widen_low_i16x8_u:
; CHECK:         .functype widen_low_i16x8_u (v128) -> (v128)
; CHECK-NEXT:  # %bb.0:
; CHECK-NEXT:    local.get 0
; CHECK-NEXT:    i32x4.widen_low_i16x8_u
; CHECK-NEXT:    # fallthrough-return
  %low = shufflevector <8 x i16> %v, <8 x i16> undef,
           <4 x i32> <i32 0, i32 1, i32 2, i32 3>
  %widened = zext <4 x i16> %low to <4 x i32>
  ret <4 x i32> %widened
}

define <4 x i32> @widen_high_i16x8_s(<8 x i16> %v) {
; CHECK-LABEL: widen_high_i16x8_s:
; CHECK:         .functype widen_high_i16x8_s (v128) -> (v128)
; CHECK-NEXT:  # %bb.0:
; CHECK-NEXT:    local.get 0
; CHECK-NEXT:    i32x4.widen_high_i16x8_s
; CHECK-NEXT:    # fallthrough-return
  %low = shufflevector <8 x i16> %v, <8 x i16> undef,
           <4 x i32> <i32 4, i32 5, i32 6, i32 7>
  %widened = sext <4 x i16> %low to <4 x i32>
  ret <4 x i32> %widened
}

define <4 x i32> @widen_high_i16x8_u(<8 x i16> %v) {
; CHECK-LABEL: widen_high_i16x8_u:
; CHECK:         .functype widen_high_i16x8_u (v128) -> (v128)
; CHECK-NEXT:  # %bb.0:
; CHECK-NEXT:    local.get 0
; CHECK-NEXT:    i32x4.widen_high_i16x8_u
; CHECK-NEXT:    # fallthrough-return
  %low = shufflevector <8 x i16> %v, <8 x i16> undef,
           <4 x i32> <i32 4, i32 5, i32 6, i32 7>
  %widened = zext <4 x i16> %low to <4 x i32>
  ret <4 x i32> %widened
}

;; Also test that similar patterns with offsets not corresponding to
;; the low or high half are correctly expanded.

define <8 x i16> @widen_lowish_i8x16_s(<16 x i8> %v) {
; CHECK-LABEL: widen_lowish_i8x16_s:
; CHECK:         .functype widen_lowish_i8x16_s (v128) -> (v128)
; CHECK-NEXT:  # %bb.0:
; CHECK-NEXT:    local.get 0
; CHECK-NEXT:    i8x16.extract_lane_u 1
; CHECK-NEXT:    i16x8.splat
; CHECK-NEXT:    local.get 0
; CHECK-NEXT:    i8x16.extract_lane_u 2
; CHECK-NEXT:    i16x8.replace_lane 1
; CHECK-NEXT:    local.get 0
; CHECK-NEXT:    i8x16.extract_lane_u 3
; CHECK-NEXT:    i16x8.replace_lane 2
; CHECK-NEXT:    local.get 0
; CHECK-NEXT:    i8x16.extract_lane_u 4
; CHECK-NEXT:    i16x8.replace_lane 3
; CHECK-NEXT:    local.get 0
; CHECK-NEXT:    i8x16.extract_lane_u 5
; CHECK-NEXT:    i16x8.replace_lane 4
; CHECK-NEXT:    local.get 0
; CHECK-NEXT:    i8x16.extract_lane_u 6
; CHECK-NEXT:    i16x8.replace_lane 5
; CHECK-NEXT:    local.get 0
; CHECK-NEXT:    i8x16.extract_lane_u 7
; CHECK-NEXT:    i16x8.replace_lane 6
; CHECK-NEXT:    local.get 0
; CHECK-NEXT:    i8x16.extract_lane_u 8
; CHECK-NEXT:    i16x8.replace_lane 7
; CHECK-NEXT:    i32.const 8
; CHECK-NEXT:    i16x8.shl
; CHECK-NEXT:    i32.const 8
; CHECK-NEXT:    i16x8.shr_s
; CHECK-NEXT:    # fallthrough-return
  %lowish = shufflevector <16 x i8> %v, <16 x i8> undef,
           <8 x i32> <i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8>
  %widened = sext <8 x i8> %lowish to <8 x i16>
  ret <8 x i16> %widened
}

define <4 x i32> @widen_lowish_i16x8_s(<8 x i16> %v) {
; CHECK-LABEL: widen_lowish_i16x8_s:
; CHECK:         .functype widen_lowish_i16x8_s (v128) -> (v128)
; CHECK-NEXT:  # %bb.0:
; CHECK-NEXT:    local.get 0
; CHECK-NEXT:    i16x8.extract_lane_u 1
; CHECK-NEXT:    i32x4.splat
; CHECK-NEXT:    local.get 0
; CHECK-NEXT:    i16x8.extract_lane_u 2
; CHECK-NEXT:    i32x4.replace_lane 1
; CHECK-NEXT:    local.get 0
; CHECK-NEXT:    i16x8.extract_lane_u 3
; CHECK-NEXT:    i32x4.replace_lane 2
; CHECK-NEXT:    local.get 0
; CHECK-NEXT:    i16x8.extract_lane_u 4
; CHECK-NEXT:    i32x4.replace_lane 3
; CHECK-NEXT:    i32.const 16
; CHECK-NEXT:    i32x4.shl
; CHECK-NEXT:    i32.const 16
; CHECK-NEXT:    i32x4.shr_s
; CHECK-NEXT:    # fallthrough-return
  %lowish = shufflevector <8 x i16> %v, <8 x i16> undef,
           <4 x i32> <i32 1, i32 2, i32 3, i32 4>
  %widened = sext <4 x i16> %lowish to <4 x i32>
  ret <4 x i32> %widened
}