| Krzysztof Parzyszek | 046090d | 2018-03-12 14:01:28 +0000 | [diff] [blame] | 1 | ; RUN: llc -march=hexagon -hexagon-hwloop-preheader < %s | FileCheck %s |
| 2 | |
| 3 | ; check for lack of assertion failures. |
| 4 | |
| 5 | ; CHECK: %bb.0 |
| 6 | |
| 7 | ; Function Attrs: nounwind readnone |
| 8 | declare i32 @llvm.hexagon.A2.sath(i32) #0 |
| 9 | |
| 10 | ; Function Attrs: nounwind readnone |
| 11 | declare i32 @llvm.hexagon.A2.neg(i32) #0 |
| 12 | |
| 13 | define void @f0(i16 signext %a0) { |
| 14 | b0: |
| 15 | %v0 = icmp slt i16 %a0, 1 |
| 16 | br i1 %v0, label %b1, label %b3 |
| 17 | |
| 18 | b1: ; preds = %b2, %b0 |
| 19 | %v1 = phi i16 [ %v11, %b2 ], [ %a0, %b0 ] |
| 20 | %v2 = sext i16 %v1 to i32 |
| 21 | %v3 = tail call i32 @llvm.hexagon.A2.neg(i32 %v2) |
| 22 | %v4 = tail call i32 @llvm.hexagon.A2.sath(i32 %v3) |
| 23 | %v5 = trunc i32 %v4 to i16 |
| 24 | %v6 = shl i32 %v4, 16 |
| 25 | %v7 = ashr exact i32 %v6, 16 |
| 26 | %v8 = icmp slt i16 %v5, 0 |
| 27 | br i1 %v8, label %b2, label %b3 |
| 28 | |
| 29 | b2: ; preds = %b1 |
| 30 | %v9 = tail call i32 @llvm.hexagon.A2.neg(i32 %v7) |
| 31 | %v10 = tail call i32 @llvm.hexagon.A2.sath(i32 %v9) |
| 32 | %v11 = trunc i32 %v10 to i16 |
| 33 | %v12 = icmp slt i16 %v11, 1 |
| 34 | br i1 %v12, label %b1, label %b3 |
| 35 | |
| 36 | b3: ; preds = %b2, %b1, %b0 |
| 37 | ret void |
| 38 | } |
| 39 | |
| 40 | attributes #0 = { nounwind readnone } |