| ; RUN: llc %s -o - -aarch64-enable-atomic-cfg-tidy=0 | FileCheck %s |
| ; Check that ANDS (tst) is not merged with ADD when the immediate |
| ; is not 0. |
| ; <rdar://problem/16693089> |
| target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128" |
| target triple = "arm64-apple-ios" |
| |
| ; CHECK-LABEL: tst1: |
| ; CHECK: add [[REG:w[0-9]+]], w{{[0-9]+}}, #1 |
| ; CHECK: tst [[REG]], #0x1 |
| define void @tst1(i1 %tst, i32 %true) { |
| entry: |
| br i1 %tst, label %for.end, label %for.body |
| |
| for.body: ; preds = %for.body, %entry |
| %result.09 = phi i32 [ %add2.result.0, %for.body ], [ 1, %entry ] |
| %i.08 = phi i32 [ %inc, %for.body ], [ 2, %entry ] |
| %and = and i32 %i.08, 1 |
| %cmp1 = icmp eq i32 %and, 0 |
| %add2.result.0 = select i1 %cmp1, i32 %true, i32 %result.09 |
| %inc = add nsw i32 %i.08, 1 |
| %cmp = icmp slt i32 %i.08, %true |
| br i1 %cmp, label %for.body, label %for.cond.for.end_crit_edge |
| |
| for.cond.for.end_crit_edge: ; preds = %for.body |
| %add2.result.0.lcssa = phi i32 [ %add2.result.0, %for.body ] |
| br label %for.end |
| |
| for.end: ; preds = %for.cond.for.end_crit_edge, %entry |
| ret void |
| } |
