1 ; RUN: opt -hexagon-loop-idiom -S < %s | FileCheck %s
3 ; Make sure that we generate correct runtime checks.
6 ; CHECK: [[LEN:%[0-9]+]] = shl nuw i32 %len, 3
7 ; CHECK: [[SRC:%[0-9]+]] = ptrtoint ptr %src to i32
8 ; CHECK: [[DST:%[0-9]+]] = ptrtoint ptr %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
15 target 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"
16 target triple = "hexagon"
18 define void @fred(ptr %dst, ptr %src, i32 %len) #0 {
20 %v6 = icmp slt i32 0, %len
21 br i1 %v6, label %b7, label %b16
26 b8: ; preds = %b13, %b7
27 %v9 = phi i32 [ 0, %b7 ], [ %v14, %b13 ]
28 %v10 = getelementptr inbounds i64, ptr %src, i32 %v9
29 %v11 = load i64, ptr %v10, align 8
30 %v12 = getelementptr inbounds i64, ptr %dst, i32 %v9
31 store i64 %v11, ptr %v12, align 8
35 %v14 = add nsw i32 %v9, 1
36 %v15 = icmp slt i32 %v14, %len
37 br i1 %v15, label %b8, label %b16
39 b16: ; preds = %b13, %b3
43 attributes #0 = { noinline nounwind "target-cpu"="hexagonv60" }