llvm-mirror/test/CodeGen/SystemZ/or-01.ll

; Test 32-bit ORs in which the second operand is variable.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s

; Check OR.
define i32 @f1(i32 %a, i32 %b) {
; CHECK: f1:
; CHECK: or %r2, %r3
; CHECK: br %r14
  %or = or i32 %a, %b
  ret i32 %or
}

; Check the low end of the O range.
define i32 @f2(i32 %a, i32 *%src) {
; CHECK: f2:
; CHECK: o %r2, 0(%r3)
; CHECK: br %r14
  %b = load i32 *%src
  %or = or i32 %a, %b
  ret i32 %or
}

; Check the high end of the aligned O range.
define i32 @f3(i32 %a, i32 *%src) {
; CHECK: f3:
; CHECK: o %r2, 4092(%r3)
; CHECK: br %r14
  %ptr = getelementptr i32 *%src, i64 1023
  %b = load i32 *%ptr
  %or = or i32 %a, %b
  ret i32 %or
}

; Check the next word up, which should use OY instead of O.
define i32 @f4(i32 %a, i32 *%src) {
; CHECK: f4:
; CHECK: oy %r2, 4096(%r3)
; CHECK: br %r14
  %ptr = getelementptr i32 *%src, i64 1024
  %b = load i32 *%ptr
  %or = or i32 %a, %b
  ret i32 %or
}

; Check the high end of the aligned OY range.
define i32 @f5(i32 %a, i32 *%src) {
; CHECK: f5:
; CHECK: oy %r2, 524284(%r3)
; CHECK: br %r14
  %ptr = getelementptr i32 *%src, i64 131071
  %b = load i32 *%ptr
  %or = or i32 %a, %b
  ret i32 %or
}

; Check the next word up, which needs separate address logic.
; Other sequences besides this one would be OK.
define i32 @f6(i32 %a, i32 *%src) {
; CHECK: f6:
; CHECK: agfi %r3, 524288
; CHECK: o %r2, 0(%r3)
; CHECK: br %r14
  %ptr = getelementptr i32 *%src, i64 131072
  %b = load i32 *%ptr
  %or = or i32 %a, %b
  ret i32 %or
}

; Check the high end of the negative aligned OY range.
define i32 @f7(i32 %a, i32 *%src) {
; CHECK: f7:
; CHECK: oy %r2, -4(%r3)
; CHECK: br %r14
  %ptr = getelementptr i32 *%src, i64 -1
  %b = load i32 *%ptr
  %or = or i32 %a, %b
  ret i32 %or
}

; Check the low end of the OY range.
define i32 @f8(i32 %a, i32 *%src) {
; CHECK: f8:
; CHECK: oy %r2, -524288(%r3)
; CHECK: br %r14
  %ptr = getelementptr i32 *%src, i64 -131072
  %b = load i32 *%ptr
  %or = or i32 %a, %b
  ret i32 %or
}

; Check the next word down, which needs separate address logic.
; Other sequences besides this one would be OK.
define i32 @f9(i32 %a, i32 *%src) {
; CHECK: f9:
; CHECK: agfi %r3, -524292
; CHECK: o %r2, 0(%r3)
; CHECK: br %r14
  %ptr = getelementptr i32 *%src, i64 -131073
  %b = load i32 *%ptr
  %or = or i32 %a, %b
  ret i32 %or
}

; Check that O allows an index.
define i32 @f10(i32 %a, i64 %src, i64 %index) {
; CHECK: f10:
; CHECK: o %r2, 4092({{%r4,%r3|%r3,%r4}})
; CHECK: br %r14
  %add1 = add i64 %src, %index
  %add2 = add i64 %add1, 4092
  %ptr = inttoptr i64 %add2 to i32 *
  %b = load i32 *%ptr
  %or = or i32 %a, %b
  ret i32 %or
}

; Check that OY allows an index.
define i32 @f11(i32 %a, i64 %src, i64 %index) {
; CHECK: f11:
; CHECK: oy %r2, 4096({{%r4,%r3|%r3,%r4}})
; CHECK: br %r14
  %add1 = add i64 %src, %index
  %add2 = add i64 %add1, 4096
  %ptr = inttoptr i64 %add2 to i32 *
  %b = load i32 *%ptr
  %or = or i32 %a, %b
  ret i32 %or
}