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
   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

; Test 32-bit atomic additions.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z10 | FileCheck %s

; Check addition of a variable.
define i32 @f1(i32 %dummy, i32 *%src, i32 %b) {
; CHECK-LABEL: f1:
; CHECK: l %r2, 0(%r3)
; CHECK: [[LABEL:\.[^:]*]]:
; CHECK: lr %r0, %r2
; CHECK: ar %r0, %r4
; CHECK: cs %r2, %r0, 0(%r3)
; CHECK: jl [[LABEL]]
; CHECK: br %r14
  %res = atomicrmw add i32 *%src, i32 %b seq_cst
  ret i32 %res
}

; Check addition of 1, which can use AHI.
define i32 @f2(i32 %dummy, i32 *%src) {
; CHECK-LABEL: f2:
; CHECK: l %r2, 0(%r3)
; CHECK: [[LABEL:\.[^:]*]]:
; CHECK: lr %r0, %r2
; CHECK: ahi %r0, 1
; CHECK: cs %r2, %r0, 0(%r3)
; CHECK: jl [[LABEL]]
; CHECK: br %r14
  %res = atomicrmw add i32 *%src, i32 1 seq_cst
  ret i32 %res
}

; Check the high end of the AHI range.
define i32 @f3(i32 %dummy, i32 *%src) {
; CHECK-LABEL: f3:
; CHECK: ahi %r0, 32767
; CHECK: br %r14
  %res = atomicrmw add i32 *%src, i32 32767 seq_cst
  ret i32 %res
}

; Check the next value up, which must use AFI.
define i32 @f4(i32 %dummy, i32 *%src) {
; CHECK-LABEL: f4:
; CHECK: afi %r0, 32768
; CHECK: br %r14
  %res = atomicrmw add i32 *%src, i32 32768 seq_cst
  ret i32 %res
}

; Check the high end of the AFI range.
define i32 @f5(i32 %dummy, i32 *%src) {
; CHECK-LABEL: f5:
; CHECK: afi %r0, 2147483647
; CHECK: br %r14
  %res = atomicrmw add i32 *%src, i32 2147483647 seq_cst
  ret i32 %res
}

; Check the next value up, which gets treated as a negative operand.
define i32 @f6(i32 %dummy, i32 *%src) {
; CHECK-LABEL: f6:
; CHECK: afi %r0, -2147483648
; CHECK: br %r14
  %res = atomicrmw add i32 *%src, i32 2147483648 seq_cst
  ret i32 %res
}

; Check addition of -1, which can use AHI.
define i32 @f7(i32 %dummy, i32 *%src) {
; CHECK-LABEL: f7:
; CHECK: ahi %r0, -1
; CHECK: br %r14
  %res = atomicrmw add i32 *%src, i32 -1 seq_cst
  ret i32 %res
}

; Check the low end of the AHI range.
define i32 @f8(i32 %dummy, i32 *%src) {
; CHECK-LABEL: f8:
; CHECK: ahi %r0, -32768
; CHECK: br %r14
  %res = atomicrmw add i32 *%src, i32 -32768 seq_cst
  ret i32 %res
}

; Check the next value down, which must use AFI instead.
define i32 @f9(i32 %dummy, i32 *%src) {
; CHECK-LABEL: f9:
; CHECK: afi %r0, -32769
; CHECK: br %r14
  %res = atomicrmw add i32 *%src, i32 -32769 seq_cst
  ret i32 %res
}