; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple=arm64 -o - %s | FileCheck %s


; Make sure we don't try to fold an fneg into +0.0, creating an illegal constant
; -0.0. It's also good, though not essential, that we don't resort to a litpool.
define double @test_fms_fold(double %a, double %b) {
; CHECK-LABEL: test_fms_fold:
; CHECK:       // %bb.0:
; CHECK-NEXT:    movi {{d[0-9]+}}, #0000000000000000
; CHECK-NEXT:    ret
  %mul = fmul fast double %a, 0.000000e+00
  %mul1 = fmul fast double %b, 0.000000e+00
  %sub = fsub double %mul, %mul1
  ret double %sub
}