llvm/test/CodeGen/LoongArch/fdiv-reciprocal-estimate.ll

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc --mtriple=loongarch32 --mattr=+f,-d,-frecipe < %s | FileCheck %s --check-prefix=LA32F
; RUN: llc --mtriple=loongarch32 --mattr=+f,-d,+frecipe < %s | FileCheck %s --check-prefix=LA32F-FRECIPE
; RUN: llc --mtriple=loongarch64 --mattr=+d,-frecipe < %s | FileCheck %s --check-prefix=LA64D
; RUN: llc --mtriple=loongarch64 --mattr=+d,+frecipe < %s | FileCheck %s --check-prefix=LA64D-FRECIPE

;; Exercise the 'fdiv' LLVM IR: https://llvm.org/docs/LangRef.html#fdiv-instruction

define float @fdiv_s(float %x, float %y) {
; LA32F-LABEL: fdiv_s:
; LA32F:       # %bb.0:
; LA32F-NEXT:    fdiv.s $fa0, $fa0, $fa1
; LA32F-NEXT:    ret
;
; LA32F-FRECIPE-LABEL: fdiv_s:
; LA32F-FRECIPE:       # %bb.0:
; LA32F-FRECIPE-NEXT:    frecipe.s $fa2, $fa1
; LA32F-FRECIPE-NEXT:    fmul.s $fa3, $fa0, $fa2
; LA32F-FRECIPE-NEXT:    fnmsub.s $fa0, $fa1, $fa3, $fa0
; LA32F-FRECIPE-NEXT:    fmadd.s $fa0, $fa2, $fa0, $fa3
; LA32F-FRECIPE-NEXT:    ret
;
; LA64D-LABEL: fdiv_s:
; LA64D:       # %bb.0:
; LA64D-NEXT:    fdiv.s $fa0, $fa0, $fa1
; LA64D-NEXT:    ret
;
; LA64D-FRECIPE-LABEL: fdiv_s:
; LA64D-FRECIPE:       # %bb.0:
; LA64D-FRECIPE-NEXT:    frecipe.s $fa2, $fa1
; LA64D-FRECIPE-NEXT:    fmul.s $fa3, $fa0, $fa2
; LA64D-FRECIPE-NEXT:    fnmsub.s $fa0, $fa1, $fa3, $fa0
; LA64D-FRECIPE-NEXT:    fmadd.s $fa0, $fa2, $fa0, $fa3
; LA64D-FRECIPE-NEXT:    ret
  %div = fdiv fast float %x, %y
  ret float %div
}

define double @fdiv_d(double %x, double %y) {
; LA32F-LABEL: fdiv_d:
; LA32F:       # %bb.0:
; LA32F-NEXT:    addi.w $sp, $sp, -16
; LA32F-NEXT:    .cfi_def_cfa_offset 16
; LA32F-NEXT:    st.w $ra, $sp, 12 # 4-byte Folded Spill
; LA32F-NEXT:    .cfi_offset 1, -4
; LA32F-NEXT:    bl __divdf3
; LA32F-NEXT:    ld.w $ra, $sp, 12 # 4-byte Folded Reload
; LA32F-NEXT:    addi.w $sp, $sp, 16
; LA32F-NEXT:    ret
;
; LA32F-FRECIPE-LABEL: fdiv_d:
; LA32F-FRECIPE:       # %bb.0:
; LA32F-FRECIPE-NEXT:    addi.w $sp, $sp, -16
; LA32F-FRECIPE-NEXT:    .cfi_def_cfa_offset 16
; LA32F-FRECIPE-NEXT:    st.w $ra, $sp, 12 # 4-byte Folded Spill
; LA32F-FRECIPE-NEXT:    .cfi_offset 1, -4
; LA32F-FRECIPE-NEXT:    bl __divdf3
; LA32F-FRECIPE-NEXT:    ld.w $ra, $sp, 12 # 4-byte Folded Reload
; LA32F-FRECIPE-NEXT:    addi.w $sp, $sp, 16
; LA32F-FRECIPE-NEXT:    ret
;
; LA64D-LABEL: fdiv_d:
; LA64D:       # %bb.0:
; LA64D-NEXT:    fdiv.d $fa0, $fa0, $fa1
; LA64D-NEXT:    ret
;
; LA64D-FRECIPE-LABEL: fdiv_d:
; LA64D-FRECIPE:       # %bb.0:
; LA64D-FRECIPE-NEXT:    frecipe.d $fa2, $fa1
; LA64D-FRECIPE-NEXT:    vldi $vr3, -784
; LA64D-FRECIPE-NEXT:    fmadd.d $fa3, $fa1, $fa2, $fa3
; LA64D-FRECIPE-NEXT:    fnmsub.d $fa2, $fa3, $fa2, $fa2
; LA64D-FRECIPE-NEXT:    fmul.d $fa3, $fa0, $fa2
; LA64D-FRECIPE-NEXT:    fnmsub.d $fa0, $fa1, $fa3, $fa0
; LA64D-FRECIPE-NEXT:    fmadd.d $fa0, $fa2, $fa0, $fa3
; LA64D-FRECIPE-NEXT:    ret
  %div = fdiv fast double %x, %y
  ret double %div
}