; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 6
; RUN: llc -mtriple=i386-unknown-code16 < %s | FileCheck %s

;; In 16-bit mode, displacements are limited to [-65535,65535] (R_386_16).
;; Test boundary conditions for offset folding.

@X = external global i32, align 4

;; -65535 is within range, should fold
define i32 @neg_65535() {
; CHECK-LABEL: neg_65535:
; CHECK:       # %bb.0:
; CHECK-NEXT:    leal X+65535, %eax
; CHECK-NEXT:    retl
  ret i32 add (i32 ptrtoint (ptr @X to i32), i32 65535)
}

;; 65535 is within range, should fold
define i32 @pos_65535() {
; CHECK-LABEL: pos_65535:
; CHECK:       # %bb.0:
; CHECK-NEXT:    leal X-65535, %eax
; CHECK-NEXT:    retl
  ret i32 sub (i32 ptrtoint (ptr @X to i32), i32 65535)
}

;; -65536 is outside range, should NOT fold
define i32 @neg_65536() {
; CHECK-LABEL: neg_65536:
; CHECK:       # %bb.0:
; CHECK-NEXT:    movl $65536, %eax # imm = 0x10000
; CHECK-NEXT:    leal X(%eax), %eax
; CHECK-NEXT:    retl
  ret i32 add (i32 ptrtoint (ptr @X to i32), i32 65536)
}

;; 65536 is outside range, should NOT fold
define i32 @pos_65536() {
; CHECK-LABEL: pos_65536:
; CHECK:       # %bb.0:
; CHECK-NEXT:    movl $-65536, %eax # imm = 0xFFFF0000
; CHECK-NEXT:    leal X(%eax), %eax
; CHECK-NEXT:    retl
  ret i32 sub (i32 ptrtoint (ptr @X to i32), i32 65536)
}