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1; RUN: opt -hexagon-loop-idiom -S < %s | FileCheck %s
2
3; Make sure that we generate correct runtime checks.
4
5; CHECK: b7.old:
6; CHECK:   [[LEN:%[0-9]+]] = shl i32 %len, 3
7; CHECK:   [[SRC:%[0-9]+]] = ptrtoint i8* %src to i32
8; CHECK:   [[DST:%[0-9]+]] = ptrtoint i8* %dst to i32
9; CHECK:   [[ULT:%[0-9]+]] = icmp ult i32 [[DST]], [[SRC]]
10; CHECK:   [[SUB:%[0-9]+]] = sub i32 [[DST]], [[SRC]]
11; CHECK:   [[SLT:%[0-9]+]] = icmp sle i32 [[LEN]], [[SUB]]
12; CHECK:   [[CND:%[0-9]+]] = or i1 [[ULT]], [[SLT]]
13; CHECK:   br i1 [[CND]], label %b8.rtli, label %b8.rtli.ph
14
15target datalayout = "e-m:e-p:32:32:32-a:0-n16:32-i64:64:64-i32:32:32-i16:16:16-i1:8:8-f32:32:32-f64:64:64-v32:32:32-v64:64:64-v512:512:512-v1024:1024:1024-v2048:2048:2048"
16target triple = "hexagon"
17
18define void @fred(i8* %dst, i8* %src, i32 %len) #0 {
19b3:
20  %v4 = bitcast i8* %src to i64*
21  %v5 = bitcast i8* %dst to i64*
22  %v6 = icmp slt i32 0, %len
23  br i1 %v6, label %b7, label %b16
24
25b7:                                               ; preds = %b3
26  br label %b8
27
28b8:                                               ; preds = %b13, %b7
29  %v9 = phi i32 [ 0, %b7 ], [ %v14, %b13 ]
30  %v10 = getelementptr inbounds i64, i64* %v4, i32 %v9
31  %v11 = load i64, i64* %v10, align 8
32  %v12 = getelementptr inbounds i64, i64* %v5, i32 %v9
33  store i64 %v11, i64* %v12, align 8
34  br label %b13
35
36b13:                                              ; preds = %b8
37  %v14 = add nsw i32 %v9, 1
38  %v15 = icmp slt i32 %v14, %len
39  br i1 %v15, label %b8, label %b16
40
41b16:                                              ; preds = %b13, %b3
42  ret void
43}
44
45attributes #0 = { noinline nounwind "target-cpu"="hexagonv60" }
46