llvm/test/CodeGen/AArch64/bit-test.ll

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 6
; RUN: llc --mtriple=aarch64-linux-gnu -o - %s | FileCheck %s

declare void @f(i64)

define void @bt(i64 %val) {
; CHECK-LABEL: bt:
; CHECK:       // %bb.0:
; CHECK-NEXT:    mov w8, #123 // =0x7b
; CHECK-NEXT:    lsr x8, x8, x0
; CHECK-NEXT:    tbz w8, #0, .LBB0_2
; CHECK-NEXT:  // %bb.1: // %common.ret
; CHECK-NEXT:    ret
; CHECK-NEXT:  .LBB0_2: // %t
; CHECK-NEXT:    str x30, [sp, #-16]! // 8-byte Folded Spill
; CHECK-NEXT:    .cfi_def_cfa_offset 16
; CHECK-NEXT:    .cfi_offset w30, -16
; CHECK-NEXT:    mov x0, xzr
; CHECK-NEXT:    bl f
; CHECK-NEXT:    ldr x30, [sp], #16 // 8-byte Folded Reload
; CHECK-NEXT:    ret
  %shl = shl nuw i64 1, %val
  %and = and i64 %shl, 123
  %cmp = icmp eq i64 %and, 0
  br i1 %cmp, label %t, label %f

t:
  call void @f(i64 0)
  ret void

f:
  ret void
}

define void @bt_shl_use(i64 %val) {
; CHECK-LABEL: bt_shl_use:
; CHECK:       // %bb.0:
; CHECK-NEXT:    mov w8, #123 // =0x7b
; CHECK-NEXT:    lsr x8, x8, x0
; CHECK-NEXT:    tbz w8, #0, .LBB1_2
; CHECK-NEXT:  // %bb.1: // %common.ret
; CHECK-NEXT:    ret
; CHECK-NEXT:  .LBB1_2: // %t
; CHECK-NEXT:    str x30, [sp, #-16]! // 8-byte Folded Spill
; CHECK-NEXT:    .cfi_def_cfa_offset 16
; CHECK-NEXT:    .cfi_offset w30, -16
; CHECK-NEXT:    mov w8, #1 // =0x1
; CHECK-NEXT:    lsl x0, x8, x0
; CHECK-NEXT:    bl f
; CHECK-NEXT:    ldr x30, [sp], #16 // 8-byte Folded Reload
; CHECK-NEXT:    ret
  %shl = shl nuw i64 1, %val
  %and = and i64 %shl, 123
  %cmp = icmp eq i64 %and, 0
  br i1 %cmp, label %t, label %f

t:
  call void @f(i64 %shl)
  ret void

f:
  ret void
}

define void @bt_and_use(i64 %val) {
; CHECK-LABEL: bt_and_use:
; CHECK:       // %bb.0:
; CHECK-NEXT:    mov w8, #123 // =0x7b
; CHECK-NEXT:    lsr x9, x8, x0
; CHECK-NEXT:    tbz w9, #0, .LBB2_2
; CHECK-NEXT:  // %bb.1: // %common.ret
; CHECK-NEXT:    ret
; CHECK-NEXT:  .LBB2_2: // %t
; CHECK-NEXT:    str x30, [sp, #-16]! // 8-byte Folded Spill
; CHECK-NEXT:    .cfi_def_cfa_offset 16
; CHECK-NEXT:    .cfi_offset w30, -16
; CHECK-NEXT:    mov w9, #1 // =0x1
; CHECK-NEXT:    lsl x9, x9, x0
; CHECK-NEXT:    and x0, x9, x8
; CHECK-NEXT:    bl f
; CHECK-NEXT:    ldr x30, [sp], #16 // 8-byte Folded Reload
; CHECK-NEXT:    ret
  %shl = shl nuw i64 1, %val
  %and = and i64 %shl, 123
  %cmp = icmp eq i64 %and, 0
  br i1 %cmp, label %t, label %f

t:
  call void @f(i64 %and)
  ret void

f:
  ret void
}