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

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

define float @fdiv_constant_fold() {
; CHECK-LABEL: @fdiv_constant_fold(
; CHECK-NEXT:    ret float 1.500000e+00
;
  %f = fdiv float 3.0, 2.0
  ret float %f
}

define float @frem_constant_fold() {
; CHECK-LABEL: @frem_constant_fold(
; CHECK-NEXT:    ret float 1.000000e+00
;
  %f = frem float 3.0, 2.0
  ret float %f
}

define double @fmul_fdiv_common_operand(double %x, double %y) {
; CHECK-LABEL: @fmul_fdiv_common_operand(
; CHECK-NEXT:    ret double %x
;
  %m = fmul double %x, %y
  %d = fdiv reassoc nnan double %m, %y
  ret double %d
}

; Negative test - the fdiv must be reassociative and not allow NaNs.

define double @fmul_fdiv_common_operand_too_strict(double %x, double %y) {
; CHECK-LABEL: @fmul_fdiv_common_operand_too_strict(
; CHECK-NEXT:    [[M:%.*]] = fmul fast double %x, %y
; CHECK-NEXT:    [[D:%.*]] = fdiv reassoc double [[M]], %y
; CHECK-NEXT:    ret double [[D]]
;
  %m = fmul fast double %x, %y
  %d = fdiv reassoc double %m, %y
  ret double %d
}

; Commute the fmul operands. Use a vector type to verify that works too.

define <2 x float> @fmul_fdiv_common_operand_commute_vec(<2 x float> %x, <2 x float> %y) {
; CHECK-LABEL: @fmul_fdiv_common_operand_commute_vec(
; CHECK-NEXT:    ret <2 x float> %x
;
  %m = fmul <2 x float> %y, %x
  %d = fdiv fast <2 x float> %m, %y
  ret <2 x float> %d
}