1 ; RUN: llc -march=hexagon -O2 -debug-only=pipeliner -hexagon-initial-cfg-cleanup=0 -disable-cgp-delete-phis < %s -o - 2>&1 > /dev/null | FileCheck %s
4 ; Test that the phi in the first epilog block is getter the correct
5 ; value from the kernel block. In this bug, the phi was using the value
6 ; defined in the loop instead of the Phi valued defined in the kernel.
7 ; We need to use the kernel's phi value (if the Phi in the kernel is the
11 ; CHECK: %[[REG:([0-9]+)]]:intregs = PHI %{{.*}}, %[[REG1:([0-9]+)]]
12 ; CHECK: %[[REG1]]:intregs = nuw A2_addi
14 ; CHECK: %{{[0-9]+}}:intregs = PHI %{{.*}}, %[[REG]]
16 define void @f0(i32 %a0, i32 %a1) #0 {
18 %v0 = icmp sgt i32 %a0, 64
19 br i1 %v0, label %b1, label %b3
24 b2: ; preds = %b2, %b1
25 %v1 = phi i32 [ %a0, %b1 ], [ %v13, %b2 ]
26 %v2 = phi ptr [ null, %b1 ], [ %v3, %b2 ]
27 %v3 = getelementptr inbounds <16 x i32>, ptr %v2, i32 1
28 %v4 = load <16 x i32>, ptr %v2, align 64
29 %v5 = load <16 x i32>, ptr undef, align 64
30 %v6 = tail call <16 x i32> @llvm.hexagon.V6.valignbi(<16 x i32> %v5, <16 x i32> undef, i32 1)
31 %v7 = tail call <32 x i32> @llvm.hexagon.V6.vcombine(<16 x i32> undef, <16 x i32> %v6)
32 %v8 = tail call <32 x i32> @llvm.hexagon.V6.vmpabus.acc(<32 x i32> undef, <32 x i32> %v7, i32 undef)
33 %v9 = tail call <32 x i32> @llvm.hexagon.V6.vdmpybus.dv.acc(<32 x i32> %v8, <32 x i32> undef, i32 undef)
34 %v10 = tail call <32 x i32> @llvm.hexagon.V6.vmpybus.acc(<32 x i32> %v9, <16 x i32> zeroinitializer, i32 undef)
35 %v11 = tail call <16 x i32> @llvm.hexagon.V6.lo(<32 x i32> %v10)
36 %v12 = tail call <16 x i32> @llvm.hexagon.V6.vasrhubsat(<16 x i32> undef, <16 x i32> %v11, i32 %a1)
37 store <16 x i32> %v12, ptr null, align 64
38 %v13 = add nsw i32 %v1, -64
39 %v14 = icmp sgt i32 %v13, 64
40 br i1 %v14, label %b2, label %b3
42 b3: ; preds = %b2, %b0
46 ; Function Attrs: nounwind readnone
47 declare <16 x i32> @llvm.hexagon.V6.valignbi(<16 x i32>, <16 x i32>, i32) #0
49 ; Function Attrs: nounwind readnone
50 declare <32 x i32> @llvm.hexagon.V6.vcombine(<16 x i32>, <16 x i32>) #0
52 ; Function Attrs: nounwind readnone
53 declare <32 x i32> @llvm.hexagon.V6.vdmpybus.dv.acc(<32 x i32>, <32 x i32>, i32) #0
55 ; Function Attrs: nounwind readnone
56 declare <32 x i32> @llvm.hexagon.V6.vmpabus.acc(<32 x i32>, <32 x i32>, i32) #0
58 ; Function Attrs: nounwind readnone
59 declare <32 x i32> @llvm.hexagon.V6.vmpybus.acc(<32 x i32>, <16 x i32>, i32) #0
61 ; Function Attrs: nounwind readnone
62 declare <16 x i32> @llvm.hexagon.V6.vasrhubsat(<16 x i32>, <16 x i32>, i32) #0
64 ; Function Attrs: nounwind readnone
65 declare <16 x i32> @llvm.hexagon.V6.lo(<32 x i32>) #0
67 attributes #0 = { nounwind readnone "target-cpu"="hexagonv60" "target-features"="+hvxv60,+hvx-length64b" }