| ; RUN: opt -hexagon-loop-idiom -S < %s | FileCheck %s | |
| ; Make sure that we generate correct runtime checks. | |
| ; CHECK: b7.old: | |
| ; CHECK: [[LEN:%[0-9]+]] = shl i32 %len, 3 | |
| ; CHECK: [[SRC:%[0-9]+]] = ptrtoint i8* %src to i32 | |
| ; CHECK: [[DST:%[0-9]+]] = ptrtoint i8* %dst to i32 | |
| ; CHECK: [[ULT:%[0-9]+]] = icmp ult i32 [[DST]], [[SRC]] | |
| ; CHECK: [[SUB:%[0-9]+]] = sub i32 [[DST]], [[SRC]] | |
| ; CHECK: [[SLT:%[0-9]+]] = icmp sle i32 [[LEN]], [[SUB]] | |
| ; CHECK: [[CND:%[0-9]+]] = or i1 [[ULT]], [[SLT]] | |
| ; CHECK: br i1 [[CND]], label %b8.rtli, label %b8.rtli.ph | |
| 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" | |
| target triple = "hexagon" | |
| define void @fred(i8* %dst, i8* %src, i32 %len) #0 { | |
| b3: | |
| %v4 = bitcast i8* %src to i64* | |
| %v5 = bitcast i8* %dst to i64* | |
| %v6 = icmp slt i32 0, %len | |
| br i1 %v6, label %b7, label %b16 | |
| b7: ; preds = %b3 | |
| br label %b8 | |
| b8: ; preds = %b13, %b7 | |
| %v9 = phi i32 [ 0, %b7 ], [ %v14, %b13 ] | |
| %v10 = getelementptr inbounds i64, i64* %v4, i32 %v9 | |
| %v11 = load i64, i64* %v10, align 8 | |
| %v12 = getelementptr inbounds i64, i64* %v5, i32 %v9 | |
| store i64 %v11, i64* %v12, align 8 | |
| br label %b13 | |
| b13: ; preds = %b8 | |
| %v14 = add nsw i32 %v9, 1 | |
| %v15 = icmp slt i32 %v14, %len | |
| br i1 %v15, label %b8, label %b16 | |
| b16: ; preds = %b13, %b3 | |
| ret void | |
| } | |
| attributes #0 = { noinline nounwind "target-cpu"="hexagonv60" } |