1; RUN: llc %s -o - -aarch64-enable-atomic-cfg-tidy=0 | FileCheck %s
2; Check that ANDS (tst) is not merged with ADD when the immediate
3; is not 0.
4; <rdar://problem/16693089>
5target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
6target triple = "arm64-apple-ios"
7
8; CHECK-LABEL: tst1:
9; CHECK: add [[REG:w[0-9]+]], w{{[0-9]+}}, #1
10; CHECK: tst [[REG]], #0x1
11define void @tst1(i1 %tst, i32 %true) {
12entry:
13  br i1 %tst, label %for.end, label %for.body
14
15for.body:                                         ; preds = %for.body, %entry
16  %result.09 = phi i32 [ %add2.result.0, %for.body ], [ 1, %entry ]
17  %i.08 = phi i32 [ %inc, %for.body ], [ 2, %entry ]
18  %and = and i32 %i.08, 1
19  %cmp1 = icmp eq i32 %and, 0
20  %add2.result.0 = select i1 %cmp1, i32 %true, i32 %result.09
21  %inc = add nsw i32 %i.08, 1
22  %cmp = icmp slt i32 %i.08, %true
23  br i1 %cmp, label %for.body, label %for.cond.for.end_crit_edge
24
25for.cond.for.end_crit_edge:                       ; preds = %for.body
26  %add2.result.0.lcssa = phi i32 [ %add2.result.0, %for.body ]
27  br label %for.end
28
29for.end:                                          ; preds = %for.cond.for.end_crit_edge, %entry
30  ret void
31}
32