reference, declaration → definition
definition → references, declarations, derived classes, virtual overrides
reference to multiple definitions → definitions
unreferenced

    1
    2
    3
    4
    5
    6
    7
    8
    9
   10
   11
   12
   13
   14
   15
   16
   17
   18
   19
   20
   21
   22
   23
   24
   25
   26
   27
   28
   29
   30
   31
   32
   33
   34
   35
   36
   37
   38
   39
   40
   41
   42
   43
   44
   45
   46
   47
   48
   49
   50
   51
   52
   53
   54
   55
   56
   57
   58
   59
   60
   61
   62
   63
   64
   65
   66
   67
   68
   69
   70
   71
   72
   73
   74
   75
   76
   77
   78
   79
   80
   81
   82
   83
   84
   85
   86
   87
   88
   89
   90
   91
   92
   93
   94
   95
   96
   97
   98
   99
  100
  101
  102
  103
  104
  105
  106
  107
  108
  109
  110
  111
  112
  113
  114
  115
  116

; RUN: llc -mattr=mul,movw < %s -march=avr | FileCheck %s

; Unsigned 8-bit division
define i8 @udiv8(i8 %a, i8 %b) {
; CHECK-LABEL: div8:
; CHECK: call __udivmodqi4
; CHECK-NEXT: ret

  %quotient = udiv i8 %a, %b
  ret i8 %quotient
}

; Signed 8-bit division
define i8 @sdiv8(i8 %a, i8 %b) {
; CHECK-LABEL: sdiv8:
; CHECK: call __divmodqi4
; CHECK-NEXT: ret

  %quotient = sdiv i8 %a, %b
  ret i8 %quotient
}

; Unsigned 16-bit division
define i16 @udiv16(i16 %a, i16 %b) {
; CHECK-LABEL: udiv16:
; CHECK: call __udivmodhi4
; CHECK-NEXT: movw r24, r22
; CHECK-NEXT: ret
  %quot = udiv i16 %a, %b
  ret i16 %quot
}

; Signed 16-bit division
define i16 @sdiv16(i16 %a, i16 %b) {
; CHECK-LABEL: sdiv16:
; CHECK: call __divmodhi4
; CHECK-NEXT: movw r24, r22
; CHECK-NEXT: ret
  %quot = sdiv i16 %a, %b
  ret i16 %quot
}

; Unsigned 32-bit division
define i32 @udiv32(i32 %a, i32 %b) {
; CHECK-LABEL: udiv32:
; CHECK: call __udivmodsi4
; CHECK-NEXT: movw r22, r18
; CHECK-NEXT: movw r24, r20
; CHECK-NEXT: ret
  %quot = udiv i32 %a, %b
  ret i32 %quot
}

; Signed 32-bit division
define i32 @sdiv32(i32 %a, i32 %b) {
; CHECK-LABEL: sdiv32:
; CHECK: call __divmodsi4
; CHECK-NEXT: movw r22, r18
; CHECK-NEXT: movw r24, r20
; CHECK-NEXT: ret
  %quot = sdiv i32 %a, %b
  ret i32 %quot
}

; Unsigned 64-bit division
define i64 @udiv64(i64 %a, i64 %b) {
; CHECK-LABEL: udiv64:
; CHECK: call __udivmoddi4
; CHECK-NEXT: ldd r18, Y+1
; CHECK-NEXT: ldd r19, Y+2
; CHECK-NEXT: ldd r20, Y+3
; CHECK-NEXT: ldd r21, Y+4
; CHECK-NEXT: ldd r22, Y+5
; CHECK-NEXT: ldd r23, Y+6
; CHECK-NEXT: ldd r24, Y+7
; CHECK-NEXT: ldd r25, Y+8
; CHECK: ret
  %quot = udiv i64 %a, %b
  ret i64 %quot
}

; Signed 64-bit division
define i64 @sdiv64(i64 %a, i64 %b) {
; CHECK-LABEL: sdiv64:
; CHECK: call __divmoddi4
; CHECK-NEXT: ldd r18, Y+1
; CHECK-NEXT: ldd r19, Y+2
; CHECK-NEXT: ldd r20, Y+3
; CHECK-NEXT: ldd r21, Y+4
; CHECK-NEXT: ldd r22, Y+5
; CHECK-NEXT: ldd r23, Y+6
; CHECK-NEXT: ldd r24, Y+7
; CHECK-NEXT: ldd r25, Y+8
; CHECK: ret
  %quot = sdiv i64 %a, %b
  ret i64 %quot
}

; Unsigned 128-bit division
define i128 @udiv128(i128 %a, i128 %b) {
; CHECK-LABEL: udiv128:
; CHECK: call __udivmodti4
; CHECK: ret
  %quot = udiv i128 %a, %b
  ret i128 %quot
}

; Signed 128-bit division
define i128 @sdiv128(i128 %a, i128 %b) {
; CHECK-LABEL: sdiv128:
; CHECK: call __divmodti4
; CHECK: ret
  %quot = sdiv i128 %a, %b
  ret i128 %quot
}