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

; Test the "Q" asm constraint, which accepts addresses that have a base
; and a 12-bit displacement.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu -no-integrated-as | FileCheck %s

; Check the lowest range.
define void @f1(i64 %base) {
; CHECK-LABEL: f1:
; CHECK: blah 0(%r2)
; CHECK: br %r14
  %addr = inttoptr i64 %base to i64 *
  call void asm "blah $0", "=*Q" (i64 *%addr)
  ret void
}

; Check the next lowest byte.
define void @f2(i64 %base) {
; CHECK-LABEL: f2:
; CHECK: aghi %r2, -1
; CHECK: blah 0(%r2)
; CHECK: br %r14
  %add = add i64 %base, -1
  %addr = inttoptr i64 %add to i64 *
  call void asm "blah $0", "=*Q" (i64 *%addr)
  ret void
}

; Check the highest range.
define void @f3(i64 %base) {
; CHECK-LABEL: f3:
; CHECK: blah 4095(%r2)
; CHECK: br %r14
  %add = add i64 %base, 4095
  %addr = inttoptr i64 %add to i64 *
  call void asm "blah $0", "=*Q" (i64 *%addr)
  ret void
}

; Check the next highest byte.
define void @f4(i64 %base) {
; CHECK-LABEL: f4:
; CHECK: aghi %r2, 4096
; CHECK: blah 0(%r2)
; CHECK: br %r14
  %add = add i64 %base, 4096
  %addr = inttoptr i64 %add to i64 *
  call void asm "blah $0", "=*Q" (i64 *%addr)
  ret void
}

; Check that indices aren't allowed
define void @f5(i64 %base, i64 %index) {
; CHECK-LABEL: f5:
; CHECK: agr %r2, %r3
; CHECK: blah 0(%r2)
; CHECK: br %r14
  %add = add i64 %base, %index
  %addr = inttoptr i64 %add to i64 *
  call void asm "blah $0", "=*Q" (i64 *%addr)
  ret void
}