1 ; RUN: llc -march=hexagon -hexagon-initial-cfg-cleanup=0 -disable-cgp-delete-phis < %s | FileCheck %s
3 ; Test that we generate the correct Phi name in the last couple of epilog
4 ; blocks, when there are 3 epilog blocks. The Phi was scheduled in stage
5 ; 2, so the computation for the number of Phis needs to be adjusted when
6 ; the incoming prolog block is from prolog 0 or prolog 1.
7 ; Note: the pipeliner no longer generates a 3 stage pipeline for this test.
10 ; CHECK: [[REG0:r([0-9]+)]] = add(r{{[0-8]+}},#8)
12 ; CHECK: [[REG0]] = add(r{{[0-9]+}},#8)
14 ; Function Attrs: nounwind
15 define void @f0(ptr nocapture readonly %a0, i32 %a1) #0 {
17 %v0 = alloca [129 x i32], align 8
18 br i1 undef, label %b1, label %b3
23 b2: ; preds = %b2, %b1
24 %v1 = phi ptr [ %a0, %b1 ], [ %v2, %b2 ]
25 %v2 = phi ptr [ undef, %b1 ], [ %v15, %b2 ]
26 %v3 = phi ptr [ null, %b1 ], [ %v4, %b2 ]
27 %v4 = phi ptr [ null, %b1 ], [ %v14, %b2 ]
28 %v5 = phi i32 [ 0, %b1 ], [ %v13, %b2 ]
29 %v6 = phi ptr [ undef, %b1 ], [ %v12, %b2 ]
30 %v7 = load i16, ptr %v2, align 2
31 %v8 = sext i16 %v7 to i32
32 %v9 = call i32 @llvm.hexagon.M2.mpy.ll.s0(i32 %v8, i32 %v8) #2
33 %v10 = load i16, ptr %v6, align 2
34 %v11 = call i32 @llvm.hexagon.M2.mpy.acc.sat.ll.s0(i32 %v9, i32 undef, i32 undef) #2
35 store i32 %v11, ptr %v4, align 4
36 %v12 = getelementptr inbounds i16, ptr %v6, i32 -1
38 %v14 = getelementptr inbounds i32, ptr %v3, i32 2
39 %v15 = getelementptr inbounds i16, ptr %v1, i32 2
40 %v16 = icmp slt i32 %v13, %a1
41 br i1 %v16, label %b2, label %b3
43 b3: ; preds = %b2, %b0
47 ; Function Attrs: nounwind readnone
48 declare i32 @llvm.hexagon.M2.mpy.ll.s0(i32, i32) #1
50 ; Function Attrs: nounwind readnone
51 declare i32 @llvm.hexagon.M2.mpy.acc.sat.ll.s0(i32, i32, i32) #1
53 attributes #0 = { nounwind "target-cpu"="hexagonv60" }
54 attributes #1 = { nounwind readnone }
55 attributes #2 = { nounwind }