| Matt Arsenault | 887d476 | 2016-04-13 00:39:52 +0000 | [diff] [blame^] | 1 | ; RUN: llc -march=amdgcn -verify-machineinstrs < %s | FileCheck -check-prefix=GCN %s |
| 2 | |
| 3 | ; Make sure that m0 is not reinitialized in the loop. |
| 4 | |
| 5 | ; GCN-LABEL: {{^}}copy_local_to_global_loop_m0_init: |
| 6 | ; GCN: s_cbranch_scc1 BB0_2 |
| 7 | |
| 8 | ; Initialize in preheader |
| 9 | ; GCN: s_mov_b32 m0, -1 |
| 10 | |
| 11 | ; GCN: BB0_3: |
| 12 | ; GCN: ds_read_b32 |
| 13 | ; GCN: buffer_store_dword |
| 14 | |
| 15 | ; GCN: s_cbranch_vccnz BB0_2 |
| 16 | ; GCN: s_branch BB0_3 |
| 17 | |
| 18 | ; GCN: BB0_2: |
| 19 | ; GCN-NEXT: s_endpgm |
| 20 | define void @copy_local_to_global_loop_m0_init(i32 addrspace(1)* noalias nocapture %out, i32 addrspace(3)* noalias nocapture readonly %in, i32 %n) #0 { |
| 21 | bb: |
| 22 | %tmp = icmp sgt i32 %n, 0 |
| 23 | br i1 %tmp, label %.lr.ph.preheader, label %._crit_edge |
| 24 | |
| 25 | .lr.ph.preheader: ; preds = %bb |
| 26 | br label %.lr.ph |
| 27 | |
| 28 | ._crit_edge.loopexit: ; preds = %.lr.ph |
| 29 | br label %._crit_edge |
| 30 | |
| 31 | ._crit_edge: ; preds = %._crit_edge.loopexit, %bb |
| 32 | ret void |
| 33 | |
| 34 | .lr.ph: ; preds = %.lr.ph, %.lr.ph.preheader |
| 35 | %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %.lr.ph.preheader ] |
| 36 | %i.01 = phi i32 [ %tmp4, %.lr.ph ], [ 0, %.lr.ph.preheader ] |
| 37 | %tmp1 = getelementptr inbounds i32, i32 addrspace(3)* %in, i32 %i.01 |
| 38 | %tmp2 = load i32, i32 addrspace(3)* %tmp1, align 4 |
| 39 | %tmp3 = getelementptr inbounds i32, i32 addrspace(1)* %out, i64 %indvars.iv |
| 40 | store i32 %tmp2, i32 addrspace(1)* %tmp3, align 4 |
| 41 | %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 |
| 42 | %tmp4 = add nuw nsw i32 %i.01, 1 |
| 43 | %lftr.wideiv = trunc i64 %indvars.iv.next to i32 |
| 44 | %exitcond = icmp eq i32 %lftr.wideiv, %n |
| 45 | br i1 %exitcond, label %._crit_edge.loopexit, label %.lr.ph |
| 46 | } |
| 47 | |
| 48 | attributes #0 = { nounwind } |