reference, declarationdefinition
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
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=i686-unknown | FileCheck %s --check-prefix=X32
; RUN: llc < %s -mtriple=x86_64-unknown | FileCheck %s --check-prefix=X64

; Use movzbl to avoid partial-register updates.

define i32 @foo(i32 %p, i8 zeroext %x) nounwind {
; X32-LABEL: foo:
; X32:       # %bb.0:
; X32-NEXT:    movzbl {{[0-9]+}}(%esp), %eax
; X32-NEXT:    divb {{[0-9]+}}(%esp)
; X32-NEXT:    movzbl %al, %eax
; X32-NEXT:    andl $1, %eax
; X32-NEXT:    retl
;
; X64-LABEL: foo:
; X64:       # %bb.0:
; X64-NEXT:    movzbl %dil, %eax
; X64-NEXT:    divb %sil
; X64-NEXT:    movzbl %al, %eax
; X64-NEXT:    andl $1, %eax
; X64-NEXT:    retq
  %q = trunc i32 %p to i8
  %r = udiv i8 %q, %x
  %s = zext i8 %r to i32
  %t = and i32 %s, 1
  ret i32 %t
}

define i32 @bar(i32 %p, i16 zeroext %x) nounwind {
; X32-LABEL: bar:
; X32:       # %bb.0:
; X32-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
; X32-NEXT:    xorl %edx, %edx
; X32-NEXT:    divw {{[0-9]+}}(%esp)
; X32-NEXT:    # kill: def $ax killed $ax def $eax
; X32-NEXT:    andl $1, %eax
; X32-NEXT:    retl
;
; X64-LABEL: bar:
; X64:       # %bb.0:
; X64-NEXT:    movl %edi, %eax
; X64-NEXT:    # kill: def $ax killed $ax killed $eax
; X64-NEXT:    xorl %edx, %edx
; X64-NEXT:    divw %si
; X64-NEXT:    # kill: def $ax killed $ax def $eax
; X64-NEXT:    andl $1, %eax
; X64-NEXT:    retq
  %q = trunc i32 %p to i16
  %r = udiv i16 %q, %x
  %s = zext i16 %r to i32
  %t = and i32 %s, 1
  ret i32 %t
}