llvm/test/CodeGen/X86/select-constant-xor.ll

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple=x86_64-unknown-linux-gnu %s -o - | FileCheck %s

define i32 @xori64i32(i64 %a) {
; CHECK-LABEL: xori64i32:
; CHECK:       # %bb.0:
; CHECK-NEXT:    movq %rdi, %rax
; CHECK-NEXT:    sarq $63, %rax
; CHECK-NEXT:    xorl $2147483647, %eax # imm = 0x7FFFFFFF
; CHECK-NEXT:    # kill: def $eax killed $eax killed $rax
; CHECK-NEXT:    retq
  %shr4 = ashr i64 %a, 63
  %conv5 = trunc i64 %shr4 to i32
  %xor = xor i32 %conv5, 2147483647
  ret i32 %xor
}

define i64 @selecti64i64(i64 %a) {
; CHECK-LABEL: selecti64i64:
; CHECK:       # %bb.0:
; CHECK-NEXT:    movq %rdi, %rax
; CHECK-NEXT:    sarq $63, %rax
; CHECK-NEXT:    xorq $2147483647, %rax # imm = 0x7FFFFFFF
; CHECK-NEXT:    retq
  %c = icmp sgt i64 %a, -1
  %s = select i1 %c, i64 2147483647, i64 -2147483648
  ret i64 %s
}

define i32 @selecti64i32(i64 %a) {
; CHECK-LABEL: selecti64i32:
; CHECK:       # %bb.0:
; CHECK-NEXT:    xorl %ecx, %ecx
; CHECK-NEXT:    testq %rdi, %rdi
; CHECK-NEXT:    setns %cl
; CHECK-NEXT:    movl $-2147483648, %eax # imm = 0x80000000
; CHECK-NEXT:    subl %ecx, %eax
; CHECK-NEXT:    retq
  %c = icmp sgt i64 %a, -1
  %s = select i1 %c, i32 2147483647, i32 -2147483648
  ret i32 %s
}

define i64 @selecti32i64(i32 %a) {
; CHECK-LABEL: selecti32i64:
; CHECK:       # %bb.0:
; CHECK-NEXT:    sarl $31, %edi
; CHECK-NEXT:    movslq %edi, %rax
; CHECK-NEXT:    xorq $2147483647, %rax # imm = 0x7FFFFFFF
; CHECK-NEXT:    retq
  %c = icmp sgt i32 %a, -1
  %s = select i1 %c, i64 2147483647, i64 -2147483648
  ret i64 %s
}



define i8 @xori32i8(i32 %a) {
; CHECK-LABEL: xori32i8:
; CHECK:       # %bb.0:
; CHECK-NEXT:    movl %edi, %eax
; CHECK-NEXT:    sarl $31, %eax
; CHECK-NEXT:    xorb $84, %al
; CHECK-NEXT:    # kill: def $al killed $al killed $eax
; CHECK-NEXT:    retq
  %shr4 = ashr i32 %a, 31
  %conv5 = trunc i32 %shr4 to i8
  %xor = xor i8 %conv5, 84
  ret i8 %xor
}

define i32 @selecti32i32(i32 %a) {
; CHECK-LABEL: selecti32i32:
; CHECK:       # %bb.0:
; CHECK-NEXT:    movl %edi, %eax
; CHECK-NEXT:    sarl $31, %eax
; CHECK-NEXT:    xorl $84, %eax
; CHECK-NEXT:    retq
  %c = icmp sgt i32 %a, -1
  %s = select i1 %c, i32 84, i32 -85
  ret i32 %s
}

define i8 @selecti32i8(i32 %a) {
; CHECK-LABEL: selecti32i8:
; CHECK:       # %bb.0:
; CHECK-NEXT:    movl %edi, %eax
; CHECK-NEXT:    sarl $31, %eax
; CHECK-NEXT:    xorb $84, %al
; CHECK-NEXT:    # kill: def $al killed $al killed $eax
; CHECK-NEXT:    retq
  %c = icmp sgt i32 %a, -1
  %s = select i1 %c, i8 84, i8 -85
  ret i8 %s
}

define i32 @selecti8i32(i8 %a) {
; CHECK-LABEL: selecti8i32:
; CHECK:       # %bb.0:
; CHECK-NEXT:    sarb $7, %dil
; CHECK-NEXT:    movsbl %dil, %eax
; CHECK-NEXT:    xorl $84, %eax
; CHECK-NEXT:    retq
  %c = icmp sgt i8 %a, -1
  %s = select i1 %c, i32 84, i32 -85
  ret i32 %s
}

define i32 @icmpasreq(i32 %input, i32 %a, i32 %b) {
; CHECK-LABEL: icmpasreq:
; CHECK:       # %bb.0:
; CHECK-NEXT:    movl %esi, %eax
; CHECK-NEXT:    testl %edi, %edi
; CHECK-NEXT:    cmovnsl %edx, %eax
; CHECK-NEXT:    retq
  %sh = ashr i32 %input, 31
  %c = icmp eq i32 %sh, -1
  %s = select i1 %c, i32 %a, i32 %b
  ret i32 %s
}

define i32 @icmpasrne(i32 %input, i32 %a, i32 %b) {
; CHECK-LABEL: icmpasrne:
; CHECK:       # %bb.0:
; CHECK-NEXT:    movl %esi, %eax
; CHECK-NEXT:    testl %edi, %edi
; CHECK-NEXT:    cmovsl %edx, %eax
; CHECK-NEXT:    retq
  %sh = ashr i32 %input, 31
  %c = icmp ne i32 %sh, -1
  %s = select i1 %c, i32 %a, i32 %b
  ret i32 %s
}

define i32 @oneusecmp(i32 %a, i32 %b, i32 %d) {
; CHECK-LABEL: oneusecmp:
; CHECK:       # %bb.0:
; CHECK-NEXT:    movl %edi, %eax
; CHECK-NEXT:    sarl $31, %eax
; CHECK-NEXT:    xorl $127, %eax
; CHECK-NEXT:    testl %edi, %edi
; CHECK-NEXT:    cmovsl %edx, %esi
; CHECK-NEXT:    addl %esi, %eax
; CHECK-NEXT:    retq
  %c = icmp sle i32 %a, -1
  %s = select i1 %c, i32 -128, i32 127
  %s2 = select i1 %c, i32 %d, i32 %b
  %x = add i32 %s, %s2
  ret i32 %x
}