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

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -instsimplify -S | FileCheck %s

define i32 @negated_operand(i32 %x) {
; CHECK-LABEL: @negated_operand(
; CHECK-NEXT:    ret i32 0
;
  %negx = sub i32 0, %x
  %rem = srem i32 %negx, %x
  ret i32 %rem
}

define <2 x i32> @negated_operand_commute_vec(<2 x i32> %x) {
; CHECK-LABEL: @negated_operand_commute_vec(
; CHECK-NEXT:    ret <2 x i32> zeroinitializer
;
  %negx = sub <2 x i32> zeroinitializer, %x
  %rem = srem <2 x i32> %negx, %x
  ret <2 x i32> %rem
}

define i32 @knownnegation(i32 %x, i32 %y) {
; CHECK-LABEL: @knownnegation(
; CHECK-NEXT:    ret i32 0
;
  %xy = sub i32 %x, %y
  %yx = sub i32 %y, %x
  %rem = srem i32 %xy, %yx
  ret i32 %rem
}

define <2 x i32> @knownnegation_commute_vec(<2 x i32> %x, <2 x i32> %y) {
; CHECK-LABEL: @knownnegation_commute_vec(
; CHECK-NEXT:    ret <2 x i32> zeroinitializer
;
  %xy = sub <2 x i32> %x, %y
  %yx = sub <2 x i32> %y, %x
  %rem = srem <2 x i32> %xy, %yx
  ret <2 x i32> %rem
}

define <3 x i32> @negated_operand_vec_undef(<3 x i32> %x) {
; CHECK-LABEL: @negated_operand_vec_undef(
; CHECK-NEXT:    ret <3 x i32> zeroinitializer
;
  %negx = sub <3 x i32> <i32 0, i32 undef, i32 0>, %x
  %rem = srem <3 x i32> %negx, %x
  ret <3 x i32> %rem
}

define <2 x i32> @negated_operand_vec_nonsplat(<2 x i32> %x) {
; CHECK-LABEL: @negated_operand_vec_nonsplat(
; CHECK-NEXT:    [[NEGX:%.*]] = sub <2 x i32> <i32 0, i32 1>, [[X:%.*]]
; CHECK-NEXT:    [[REM:%.*]] = srem <2 x i32> [[NEGX]], [[X]]
; CHECK-NEXT:    ret <2 x i32> [[REM]]
;
  %negx = sub <2 x i32> <i32 0, i32 1>, %x ; not 0, don't fold
  %rem = srem <2 x i32> %negx, %x
  ret <2 x i32> %rem
}

define i32 @negated_operand_commute(i32 %x) {
; CHECK-LABEL: @negated_operand_commute(
; CHECK-NEXT:    ret i32 0
;
  %negx = sub i32 0, %x
  %rem = srem i32 %x, %negx
  ret i32 %rem
}