reference, declarationdefinition
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
   57
   58
   59
   60
   61
   62
   63
   64
   65
   66
   67
   68
   69
   70
   71
   72
   73
   74
   75
   76
   77
   78
   79
   80
   81
   82
   83
   84
   85
   86
   87
   88
   89
   90
   91
   92
   93
   94
   95
   96
   97
   98
   99
  100
  101
  102
  103
  104
  105
  106
  107
  108
  109
  110
  111
  112
  113
  114
  115
  116
; addr-01.ll in which the address is also used in a non-address context.
; The assumption here is that we should match complex addresses where
; possible, but this might well need to change in future.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s

; A simple index address.
define void @f1(i64 %addr, i64 %index, i8 **%dst) {
; CHECK-LABEL: f1:
; CHECK: lb %r0, 0(%r3,%r2)
; CHECK: br %r14
  %add = add i64 %addr, %index
  %ptr = inttoptr i64 %add to i8 *
  %a = load volatile i8, i8 *%ptr
  store volatile i8 *%ptr, i8 **%dst
  ret void
}

; An address with an index and a displacement (order 1).
define void @f2(i64 %addr, i64 %index, i8 **%dst) {
; CHECK-LABEL: f2:
; CHECK: lb %r0, 100(%r3,%r2)
; CHECK: br %r14
  %add1 = add i64 %addr, %index
  %add2 = add i64 %add1, 100
  %ptr = inttoptr i64 %add2 to i8 *
  %a = load volatile i8, i8 *%ptr
  store volatile i8 *%ptr, i8 **%dst
  ret void
}

; An address with an index and a displacement (order 2).
define void @f3(i64 %addr, i64 %index, i8 **%dst) {
; CHECK-LABEL: f3:
; CHECK: lb %r0, 100(%r3,%r2)
; CHECK: br %r14
  %add1 = add i64 %addr, 100
  %add2 = add i64 %add1, %index
  %ptr = inttoptr i64 %add2 to i8 *
  %a = load volatile i8, i8 *%ptr
  store volatile i8 *%ptr, i8 **%dst
  ret void
}

; An address with an index and a subtracted displacement (order 1).
define void @f4(i64 %addr, i64 %index, i8 **%dst) {
; CHECK-LABEL: f4:
; CHECK: lb %r0, -100(%r3,%r2)
; CHECK: br %r14
  %add1 = add i64 %addr, %index
  %add2 = sub i64 %add1, 100
  %ptr = inttoptr i64 %add2 to i8 *
  %a = load volatile i8, i8 *%ptr
  store volatile i8 *%ptr, i8 **%dst
  ret void
}

; An address with an index and a subtracted displacement (order 2).
define void @f5(i64 %addr, i64 %index, i8 **%dst) {
; CHECK-LABEL: f5:
; CHECK: lb %r0, -100(%r3,%r2)
; CHECK: br %r14
  %add1 = sub i64 %addr, 100
  %add2 = add i64 %add1, %index
  %ptr = inttoptr i64 %add2 to i8 *
  %a = load volatile i8, i8 *%ptr
  store volatile i8 *%ptr, i8 **%dst
  ret void
}

; An address with an index and a displacement added using OR.
define void @f6(i64 %addr, i64 %index, i8 **%dst) {
; CHECK-LABEL: f6:
; CHECK: nill %r2, 65528
; CHECK: lb %r0, 6(%r3,%r2)
; CHECK: br %r14
  %aligned = and i64 %addr, -8
  %or = or i64 %aligned, 6
  %add = add i64 %or, %index
  %ptr = inttoptr i64 %add to i8 *
  %a = load volatile i8, i8 *%ptr
  store volatile i8 *%ptr, i8 **%dst
  ret void
}

; Like f6, but without the masking.  This OR doesn't count as a displacement.
define void @f7(i64 %addr, i64 %index, i8 **%dst) {
; CHECK-LABEL: f7:
; CHECK: oill %r2, 6
; CHECK: lb %r0, 0(%r3,%r2)
; CHECK: br %r14
  %or = or i64 %addr, 6
  %add = add i64 %or, %index
  %ptr = inttoptr i64 %add to i8 *
  %a = load volatile i8, i8 *%ptr
  store volatile i8 *%ptr, i8 **%dst
  ret void
}

; Like f6, but with the OR applied after the index.  We don't know anything
; about the alignment of %add here.
define void @f8(i64 %addr, i64 %index, i8 **%dst) {
; CHECK-LABEL: f8:
; CHECK: nill %r2, 65528
; CHECK: agr %r2, %r3
; CHECK: oill %r2, 6
; CHECK: lb %r0, 0(%r2)
; CHECK: br %r14
  %aligned = and i64 %addr, -8
  %add = add i64 %aligned, %index
  %or = or i64 %add, 6
  %ptr = inttoptr i64 %or to i8 *
  %a = load volatile i8, i8 *%ptr
  store volatile i8 *%ptr, i8 **%dst
  ret void
}