1 ; RUN: llc -mtriple amdgcn--amdhsa -mcpu=fiji -amdgpu-scalarize-global-loads=true -verify-machineinstrs < %s | FileCheck %s
5 ; Load from %arg in a Loop body has alias store
7 ; CHECK: flat_load_dword
10 ; CHECK: flat_store_dword
12 ; #####################################################################
16 ; Load from %arg has alias store in Loop
18 ; CHECK: flat_load_dword
20 ; #####################################################################
22 ; Load from %arg1 has no-alias store in Loop - arg1[i+1] never alias arg1[i]
26 define amdgpu_kernel void @cfg(i32 addrspace(1)* nocapture readonly %arg, i32 addrspace(1)* nocapture %arg1, i32 %arg2) #0 {
28 %tmp = sext i32 %arg2 to i64
29 %tmp3 = getelementptr inbounds i32, i32 addrspace(1)* %arg, i64 %tmp
30 %tmp4 = load i32, i32 addrspace(1)* %tmp3, align 4, !tbaa !0
31 %tmp5 = icmp sgt i32 %tmp4, 0
32 br i1 %tmp5, label %bb6, label %bb8
40 bb8: ; preds = %bb7, %bb
41 %tmp9 = phi i32 [ 0, %bb ], [ %tmp30, %bb7 ]
42 %tmp10 = getelementptr inbounds i32, i32 addrspace(1)* %arg1, i64 %tmp
43 store i32 %tmp9, i32 addrspace(1)* %tmp10, align 4, !tbaa !0
46 bb11: ; preds = %bb22, %bb6
47 %tmp12 = phi i32 [ %tmp30, %bb22 ], [ 0, %bb6 ]
48 %tmp13 = phi i32 [ %tmp25, %bb22 ], [ 0, %bb6 ]
49 %tmp14 = srem i32 %tmp13, %arg2
50 %tmp15 = sext i32 %tmp14 to i64
51 %tmp16 = getelementptr inbounds i32, i32 addrspace(1)* %arg, i64 %tmp15
52 %tmp17 = load i32, i32 addrspace(1)* %tmp16, align 4, !tbaa !0
53 %tmp18 = icmp sgt i32 %tmp17, 100
54 %tmp19 = sext i32 %tmp13 to i64
55 br i1 %tmp18, label %bb20, label %bb22
58 %tmp21 = getelementptr inbounds i32, i32 addrspace(1)* %arg1, i64 %tmp19
59 store i32 0, i32 addrspace(1)* %tmp21, align 4, !tbaa !0
62 bb22: ; preds = %bb20, %bb11
63 %tmp23 = getelementptr inbounds i32, i32 addrspace(1)* %arg, i64 %tmp19
64 %tmp24 = load i32, i32 addrspace(1)* %tmp23, align 4, !tbaa !0
65 %tmp25 = add nuw nsw i32 %tmp13, 1
66 %tmp26 = sext i32 %tmp25 to i64
67 %tmp27 = getelementptr inbounds i32, i32 addrspace(1)* %arg1, i64 %tmp26
68 %tmp28 = load i32, i32 addrspace(1)* %tmp27, align 4, !tbaa !0
69 %tmp29 = add i32 %tmp24, %tmp12
70 %tmp30 = add i32 %tmp29, %tmp28
71 %tmp31 = icmp eq i32 %tmp25, %tmp4
72 br i1 %tmp31, label %bb7, label %bb11
75 ; one more test to ensure that aliasing store after the load
76 ; is considered clobbering if load parent block is the same
77 ; as a loop header block.
81 ; Load from %arg has alias store that is after the load
82 ; but is considered clobbering because of the loop.
84 ; CHECK: flat_load_dword
86 define amdgpu_kernel void @cfg_selfloop(i32 addrspace(1)* nocapture readonly %arg, i32 addrspace(1)* nocapture %arg1, i32 %arg2) #0 {
94 %tmp13 = phi i32 [ %tmp25, %bb1 ], [ 0, %bb ]
95 %tmp14 = srem i32 %tmp13, %arg2
96 %tmp15 = sext i32 %tmp14 to i64
97 %tmp16 = getelementptr inbounds i32, i32 addrspace(1)* %arg, i64 %tmp15
98 %tmp17 = load i32, i32 addrspace(1)* %tmp16, align 4, !tbaa !0
99 %tmp19 = sext i32 %tmp13 to i64
100 %tmp21 = getelementptr inbounds i32, i32 addrspace(1)* %arg1, i64 %tmp19
101 store i32 %tmp17, i32 addrspace(1)* %tmp21, align 4, !tbaa !0
102 %tmp25 = add nuw nsw i32 %tmp13, 1
103 %tmp31 = icmp eq i32 %tmp25, 100
104 br i1 %tmp31, label %bb2, label %bb1
108 attributes #0 = { "target-cpu"="fiji" }
110 !0 = !{!1, !1, i64 0}
111 !1 = !{!"int", !2, i64 0}
112 !2 = !{!"omnipotent char", !3, i64 0}
113 !3 = !{!"Simple C/C++ TBAA"}