llvm/test/CodeGen/WebAssembly/simd-bitmask-mask.ll

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

; Test that masks on the output of bitselect are optimized out.

target triple = "wasm32-unknown-unknown"

declare i32 @llvm.wasm.bitmask.v16i8(<16 x i8>)
declare i32 @llvm.wasm.bitmask.v8i16(<8 x i16>)
declare i32 @llvm.wasm.bitmask.v4i32(<4 x i32>)
declare i32 @llvm.wasm.bitmask.v2i64(<2 x i64>)

define i32 @bitmask_v16i8_mask(<16 x i8> %x) {
; CHECK-LABEL: bitmask_v16i8_mask:
; CHECK:         .functype bitmask_v16i8_mask (v128) -> (i32)
; CHECK-NEXT:  # %bb.0:
; CHECK-NEXT:    local.get 0
; CHECK-NEXT:    i8x16.bitmask
; CHECK-NEXT:    i32.const 32767
; CHECK-NEXT:    i32.and
; CHECK-NEXT:    # fallthrough-return
  %m = tail call i32 @llvm.wasm.bitmask.v16i8(<16 x i8> %x)
  %v = and i32 %m, 32767 ;; 2^15 - 1
  ret i32 %v
}

define i32 @bitmask_v16i8_no_mask(<16 x i8> %x) {
; CHECK-LABEL: bitmask_v16i8_no_mask:
; CHECK:         .functype bitmask_v16i8_no_mask (v128) -> (i32)
; CHECK-NEXT:  # %bb.0:
; CHECK-NEXT:    local.get 0
; CHECK-NEXT:    i8x16.bitmask
; CHECK-NEXT:    # fallthrough-return
  %m = tail call i32 @llvm.wasm.bitmask.v16i8(<16 x i8> %x)
  %v = and i32 %m, 65535 ;; 2^16 - 1
  ret i32 %v
}

define i32 @bitmask_v8i16_mask(<8 x i16> %x) {
; CHECK-LABEL: bitmask_v8i16_mask:
; CHECK:         .functype bitmask_v8i16_mask (v128) -> (i32)
; CHECK-NEXT:  # %bb.0:
; CHECK-NEXT:    local.get 0
; CHECK-NEXT:    i16x8.bitmask
; CHECK-NEXT:    i32.const 127
; CHECK-NEXT:    i32.and
; CHECK-NEXT:    # fallthrough-return
  %m = tail call i32 @llvm.wasm.bitmask.v8i16(<8 x i16> %x)
  %v = and i32 %m, 127 ;; 2^7 - 1
  ret i32 %v
}

define i32 @bitmask_v8i16_no_mask(<8 x i16> %x) {
; CHECK-LABEL: bitmask_v8i16_no_mask:
; CHECK:         .functype bitmask_v8i16_no_mask (v128) -> (i32)
; CHECK-NEXT:  # %bb.0:
; CHECK-NEXT:    local.get 0
; CHECK-NEXT:    i16x8.bitmask
; CHECK-NEXT:    # fallthrough-return
  %m = tail call i32 @llvm.wasm.bitmask.v8i16(<8 x i16> %x)
  %v = and i32 %m, 255 ;; 2^8 - 1
  ret i32 %v
}

define i32 @bitmask_v4i32_mask(<4 x i32> %x) {
; CHECK-LABEL: bitmask_v4i32_mask:
; CHECK:         .functype bitmask_v4i32_mask (v128) -> (i32)
; CHECK-NEXT:  # %bb.0:
; CHECK-NEXT:    local.get 0
; CHECK-NEXT:    i32x4.bitmask
; CHECK-NEXT:    i32.const 7
; CHECK-NEXT:    i32.and
; CHECK-NEXT:    # fallthrough-return
  %m = tail call i32 @llvm.wasm.bitmask.v4i32(<4 x i32> %x)
  %v = and i32 %m, 7 ;; 2^3 - 1
  ret i32 %v
}

define i32 @bitmask_v4i32_no_mask(<4 x i32> %x) {
; CHECK-LABEL: bitmask_v4i32_no_mask:
; CHECK:         .functype bitmask_v4i32_no_mask (v128) -> (i32)
; CHECK-NEXT:  # %bb.0:
; CHECK-NEXT:    local.get 0
; CHECK-NEXT:    i32x4.bitmask
; CHECK-NEXT:    # fallthrough-return
  %m = tail call i32 @llvm.wasm.bitmask.v4i32(<4 x i32> %x)
  %v = and i32 %m, 15 ;; 2^4 - 1
  ret i32 %v
}

define i32 @bitmask_v2i64_mask(<2 x i64> %x) {
; CHECK-LABEL: bitmask_v2i64_mask:
; CHECK:         .functype bitmask_v2i64_mask (v128) -> (i32)
; CHECK-NEXT:  # %bb.0:
; CHECK-NEXT:    local.get 0
; CHECK-NEXT:    i64x2.bitmask
; CHECK-NEXT:    i32.const 1
; CHECK-NEXT:    i32.and
; CHECK-NEXT:    # fallthrough-return
  %m = tail call i32 @llvm.wasm.bitmask.v2i64(<2 x i64> %x)
  %v = and i32 %m, 1 ;; 2^1 - 1
  ret i32 %v
}

define i32 @bitmask_v2i64_no_mask(<2 x i64> %x) {
; CHECK-LABEL: bitmask_v2i64_no_mask:
; CHECK:         .functype bitmask_v2i64_no_mask (v128) -> (i32)
; CHECK-NEXT:  # %bb.0:
; CHECK-NEXT:    local.get 0
; CHECK-NEXT:    i64x2.bitmask
; CHECK-NEXT:    # fallthrough-return
  %m = tail call i32 @llvm.wasm.bitmask.v2i64(<2 x i64> %x)
  %v = and i32 %m, 3 ;; 2^2 - 1
  ret i32 %v
}