; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 6
; RUN: opt -S -passes=instcombine < %s | FileCheck %s

define i1 @test_frem_is_fpclass_inf(double %a, double %b) {
; CHECK-LABEL: define i1 @test_frem_is_fpclass_inf(
; CHECK-SAME: double [[A:%.*]], double [[B:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*:]]
; CHECK-NEXT:    ret i1 false
;
entry:
  %rem = frem double %a, %b
  ; 516 checks for +inf (512) or -inf (4)
  %is.inf = call i1 @llvm.is.fpclass.f64(double %rem, i32 516)
  ret i1 %is.inf
}

define i1 @test_frem_fcmp_inf(double %a, double %b) {
; CHECK-LABEL: define i1 @test_frem_fcmp_inf(
; CHECK-SAME: double [[A:%.*]], double [[B:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*:]]
; CHECK-NEXT:    ret i1 false
;
entry:
  %rem = frem double %a, %b
  %is.inf = fcmp oeq double %rem, 0x7FF0000000000000
  ret i1 %is.inf
}