llvm-6502/test/CodeGen/SystemZ/int-add-09.ll
Ulrich Weigand b503b49b51 [SystemZ] Add CodeGen test cases
This adds all CodeGen tests for the SystemZ target.

This version of the patch incorporates feedback from a review by
Sean Silva.  Thanks to all reviewers!

Patch by Richard Sandiford.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181204 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-06 16:17:29 +00:00

57 lines
1.3 KiB
LLVM

; Test 128-bit addition in which the second operand is constant.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu | 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: f1:
; CHECK: algfi {{%r[0-5]}}, 1
; CHECK: alcgr
; CHECK: br %r14
%a = load 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: f2:
; CHECK: algfi {{%r[0-5]}}, 4294967295
; CHECK: alcgr
; CHECK: br %r14
%a = load 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: f3:
; CHECK: algr
; CHECK: alcgr
; CHECK: br %r14
%a = load 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: f4:
; CHECK: algr
; CHECK: alcgr
; CHECK: br %r14
%a = load i128 *%aptr
%xor = xor i128 %a, 128
%add = add i128 %xor, -1
store i128 %add, i128 *%aptr
ret void
}