reference, declaration → definition
definition → references, declarations, derived classes, virtual overrides
reference to multiple definitions → definitions
unreferenced

    1
    2
    3
    4
    5
    6
    7
    8
    9
   10
   11
   12
   13
   14
   15
   16
   17
   18
   19
   20
   21
   22
   23
   24
   25
   26
   27
   28
   29
   30
   31
   32
   33
   34
   35
   36
   37
   38
   39
   40
   41
   42
   43
   44
   45
   46
   47
   48
   49
   50
   51
   52
   53
   54
   55
   56

; Test 128-bit addition in which the second operand is constant.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z10 | FileCheck %s

; Check additions of 1.  The XOR ensures that we don't instead load the
; constant into a register and use memory addition.
define void @f1(i128 *%aptr) {
; CHECK-LABEL: f1:
; CHECK: algfi {{%r[0-5]}}, 1
; CHECK: alcg
; CHECK: br %r14
  %a = load i128, i128 *%aptr
  %xor = xor i128 %a, 128
  %add = add i128 %xor, 1
  store i128 %add, i128 *%aptr
  ret void
}

; Check the high end of the ALGFI range.
define void @f2(i128 *%aptr) {
; CHECK-LABEL: f2:
; CHECK: algfi {{%r[0-5]}}, 4294967295
; CHECK: alcg
; CHECK: br %r14
  %a = load i128, i128 *%aptr
  %xor = xor i128 %a, 128
  %add = add i128 %xor, 4294967295
  store i128 %add, i128 *%aptr
  ret void
}

; Check the next value up, which must use register addition.
define void @f3(i128 *%aptr) {
; CHECK-LABEL: f3:
; CHECK: algr
; CHECK: alcg
; CHECK: br %r14
  %a = load i128, i128 *%aptr
  %xor = xor i128 %a, 128
  %add = add i128 %xor, 4294967296
  store i128 %add, i128 *%aptr
  ret void
}

; Check addition of -1, which must also use register addition.
define void @f4(i128 *%aptr) {
; CHECK-LABEL: f4:
; CHECK: algr
; CHECK: alcg
; CHECK: br %r14
  %a = load i128, i128 *%aptr
  %xor = xor i128 %a, 128
  %add = add i128 %xor, -1
  store i128 %add, i128 *%aptr
  ret void
}