• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
1; RUN: opt -simplifycfg -S < %s | FileCheck %s
2target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
3target triple = "x86_64-unknown-linux-gnu"
4
5; Function Attrs: norecurse nounwind uwtable
6define void @Test(i32* nocapture %res, i32* nocapture readnone %c, i32* nocapture readonly %d, i32* nocapture readonly %p) #0 {
7entry:
8  br label %for.body
9
10; CHECK-LABEL: @Test
11; CHECK: load i32, i32* {{.*}}, align 4, !llvm.mem.parallel_loop_access !0
12; CHECK: load i32, i32* {{.*}}, align 4, !llvm.mem.parallel_loop_access !0
13; CHECK: store i32 {{.*}}, align 4, !llvm.mem.parallel_loop_access !0
14; CHECK-NOT: load
15; CHECK-NOT: store
16
17for.body:                                         ; preds = %cond.end, %entry
18  %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %cond.end ]
19  %arrayidx = getelementptr inbounds i32, i32* %p, i64 %indvars.iv
20  %0 = load i32, i32* %arrayidx, align 4, !llvm.mem.parallel_loop_access !0
21  %cmp1 = icmp eq i32 %0, 0
22  br i1 %cmp1, label %cond.true, label %cond.false
23
24cond.false:                                       ; preds = %for.body
25  %arrayidx3 = getelementptr inbounds i32, i32* %res, i64 %indvars.iv
26  %v = load i32, i32* %arrayidx3, align 4, !llvm.mem.parallel_loop_access !0
27  %arrayidx7 = getelementptr inbounds i32, i32* %d, i64 %indvars.iv
28  %1 = load i32, i32* %arrayidx7, align 4, !llvm.mem.parallel_loop_access !0
29  %add = add nsw i32 %1, %v
30  br label %cond.end
31
32cond.true:                                       ; preds = %for.body
33  %arrayidx4 = getelementptr inbounds i32, i32* %res, i64 %indvars.iv
34  %w = load i32, i32* %arrayidx4, align 4, !llvm.mem.parallel_loop_access !0
35  %arrayidx8 = getelementptr inbounds i32, i32* %d, i64 %indvars.iv
36  %2 = load i32, i32* %arrayidx8, align 4, !llvm.mem.parallel_loop_access !0
37  %add2 = add nsw i32 %2, %w
38  br label %cond.end
39
40cond.end:                                         ; preds = %for.body, %cond.false
41  %cond = phi i32 [ %add, %cond.false ], [ %add2, %cond.true ]
42  %arrayidx9 = getelementptr inbounds i32, i32* %res, i64 %indvars.iv
43  store i32 %cond, i32* %arrayidx9, align 4, !llvm.mem.parallel_loop_access !0
44  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
45  %exitcond = icmp eq i64 %indvars.iv.next, 16
46  br i1 %exitcond, label %for.end, label %for.body, !llvm.loop !0
47
48for.end:                                          ; preds = %cond.end
49  ret void
50}
51
52attributes #0 = { norecurse nounwind uwtable }
53
54!0 = distinct !{!0, !1}
55!1 = !{!"llvm.loop.vectorize.enable", i1 true}
56