test/CodeGen/ARM64/icmp-opt.ll


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; RUN: llc < %s -march=arm64 | FileCheck %s

; Optimize (x > -1) to (x >= 0) etc.
; Optimize (cmp (add / sub), 0): eliminate the subs used to update flag
;   for comparison only
; rdar://10233472

define i32 @t1(i64 %a) nounwind ssp {
entry:
; CHECK-LABEL: t1:
; CHECK-NOT: movn
; CHECK: cmp  x0, #0
; CHECK: csinc w0, wzr, wzr, lt
  %cmp = icmp sgt i64 %a, -1
  %conv = zext i1 %cmp to i32
  ret i32 %conv
}