| Krzysztof Parzyszek | 046090d | 2018-03-12 14:01:28 +0000 | [diff] [blame] | 1 | ; RUN: llc -march=hexagon < %s | FileCheck %s |
| 2 | |
| 3 | ; Test that we generate a hardware loop for long long counters. |
| 4 | ; Tests signed/unsigned GT, EQ, and NEQ cases. |
| 5 | |
| 6 | ; signed GT case |
| 7 | ; CHECK-LABEL: f0: |
| 8 | ; CHECK: loop0 |
| 9 | define i32 @f0(i32* nocapture %a0) #0 { |
| 10 | b0: |
| 11 | br label %b1 |
| 12 | b1: ; preds = %b1, %b0 |
| 13 | %v0 = phi i32 [ 0, %b0 ], [ %v5, %b1 ] |
| 14 | %v1 = phi i64 [ 0, %b0 ], [ %v6, %b1 ] |
| 15 | %v2 = trunc i64 %v1 to i32 |
| 16 | %v3 = getelementptr inbounds i32, i32* %a0, i32 %v2 |
| 17 | %v4 = load i32, i32* %v3, align 4 |
| 18 | %v5 = add nsw i32 %v4, %v0 |
| 19 | %v6 = add nsw i64 %v1, 1 |
| 20 | %v7 = icmp slt i64 %v6, 8 |
| 21 | br i1 %v7, label %b1, label %b2 |
| 22 | |
| 23 | b2: ; preds = %b1 |
| 24 | ret i32 %v5 |
| 25 | } |
| 26 | |
| 27 | ; unsigned signed GT case |
| 28 | ; CHECK-LABEL: f1: |
| 29 | ; CHECK: loop0 |
| 30 | define i32 @f1(i32* nocapture %a0) #0 { |
| 31 | b0: |
| 32 | br label %b1 |
| 33 | b1: ; preds = %b1, %b0 |
| 34 | %v0 = phi i32 [ 0, %b0 ], [ %v5, %b1 ] |
| 35 | %v1 = phi i64 [ 0, %b0 ], [ %v6, %b1 ] |
| 36 | %v2 = trunc i64 %v1 to i32 |
| 37 | %v3 = getelementptr inbounds i32, i32* %a0, i32 %v2 |
| 38 | %v4 = load i32, i32* %v3, align 4 |
| 39 | %v5 = add nsw i32 %v4, %v0 |
| 40 | %v6 = add i64 %v1, 1 |
| 41 | %v7 = icmp ult i64 %v6, 8 |
| 42 | br i1 %v7, label %b1, label %b2 |
| 43 | |
| 44 | b2: ; preds = %b1 |
| 45 | ret i32 %v5 |
| 46 | } |
| 47 | |
| 48 | ; EQ case |
| 49 | ; CHECK-LABEL: f2: |
| 50 | ; CHECK: loop0 |
| 51 | define i32 @f2(i32* nocapture %a0) #0 { |
| 52 | b0: |
| 53 | br label %b1 |
| 54 | |
| 55 | b1: ; preds = %b1, %b0 |
| 56 | %v0 = phi i32 [ 0, %b0 ], [ %v5, %b1 ] |
| 57 | %v1 = phi i64 [ 0, %b0 ], [ %v6, %b1 ] |
| 58 | %v2 = trunc i64 %v1 to i32 |
| 59 | %v3 = getelementptr inbounds i32, i32* %a0, i32 %v2 |
| 60 | %v4 = load i32, i32* %v3, align 4 |
| 61 | %v5 = add nsw i32 %v4, %v0 |
| 62 | %v6 = add nsw i64 %v1, 1 |
| 63 | %v7 = icmp eq i64 %v6, 8 |
| 64 | br i1 %v7, label %b2, label %b1 |
| 65 | |
| 66 | b2: ; preds = %b1 |
| 67 | ret i32 %v5 |
| 68 | } |
| 69 | |
| 70 | attributes #0 = { nounwind readonly "target-cpu"="hexagonv55" } |