1; RUN: opt < %s -loop-vectorize -enable-vplan-native-path -vplan-build-stress-test -vplan-verify-hcfg -debug-only=loop-vectorize -disable-output 2>&1 | FileCheck %s -check-prefix=VERIFIER
2; RUN: opt < %s -loop-vectorize -enable-vplan-native-path -vplan-build-stress-test -debug-only=loop-vectorize -disable-output 2>&1 | FileCheck %s -check-prefix=NO-VERIFIER -allow-empty
3; REQUIRES: asserts
4
5; Verify that the stress testing flag for the VPlan H-CFG builder works as
6; expected with and without enabling the VPlan H-CFG Verifier.
7
8; VERIFIER: Verifying VPlan H-CFG.
9; NO-VERIFIER-NOT: Verifying VPlan H-CFG.
10
11target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
12
13define void @foo(i32* nocapture %a, i32* nocapture readonly %b, i32 %N, i32 %M) {
14entry:
15  %cmp32 = icmp sgt i32 %N, 0
16  br i1 %cmp32, label %outer.ph, label %for.end15
17
18outer.ph:
19  %cmp230 = icmp sgt i32 %M, 0
20  %0 = sext i32 %M to i64
21  %wide.trip.count = zext i32 %M to i64
22  %wide.trip.count38 = zext i32 %N to i64
23  br label %outer.body
24
25outer.body:
26  %indvars.iv35 = phi i64 [ 0, %outer.ph ], [ %indvars.iv.next36, %outer.inc ]
27  br i1 %cmp230, label %inner.ph, label %outer.inc
28
29inner.ph:
30  %1 = mul nsw i64 %indvars.iv35, %0
31  br label %inner.body
32
33inner.body:
34  %indvars.iv = phi i64 [ 0, %inner.ph ], [ %indvars.iv.next, %inner.body ]
35  %2 = add nsw i64 %indvars.iv, %1
36  %arrayidx = getelementptr inbounds i32, i32* %b, i64 %2
37  %3 = load i32, i32* %arrayidx, align 4
38  %arrayidx12 = getelementptr inbounds i32, i32* %a, i64 %2
39  store i32 %3, i32* %arrayidx12, align 4
40  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
41  %exitcond = icmp eq i64 %indvars.iv.next, %wide.trip.count
42  br i1 %exitcond, label %outer.inc, label %inner.body
43
44outer.inc:
45  %indvars.iv.next36 = add nuw nsw i64 %indvars.iv35, 1
46  %exitcond39 = icmp eq i64 %indvars.iv.next36, %wide.trip.count38
47  br i1 %exitcond39, label %for.end15, label %outer.body
48
49for.end15:
50  ret void
51}
52