1; RUN: llc -mtriple=amdgcn -mcpu=gfx900 -stop-after=prologepilog -verify-machineinstrs < %s | FileCheck -check-prefix=GCN %s 2 3; It is a small loop test that iterates over the array member of the structure argument passed byval to the function. 4; The loop code will keep the prologue and epilogue blocks apart. 5; The test is primarily to check the temp register used to preserve the earlier FP value 6; is live-in at every BB in the function. 7 8%struct.Data = type { [20 x i32] } 9 10define i32 @fp_save_restore_in_temp_sgpr(ptr addrspace(5) nocapture readonly byval(%struct.Data) align 4 %arg) #0 { 11 ; GCN-LABEL: name: fp_save_restore_in_temp_sgpr 12 ; GCN: bb.0.begin: 13 ; GCN: liveins: $sgpr11 14 ; GCN: $sgpr11 = frame-setup COPY $sgpr33 15 ; GCN: $sgpr33 = frame-setup COPY $sgpr32 16 ; GCN: bb.1.lp_end: 17 ; GCN: liveins: $sgpr10, $sgpr11, $vgpr1, $sgpr4_sgpr5, $sgpr6_sgpr7, $sgpr8_sgpr9 18 ; GCN: bb.2.lp_begin: 19 ; GCN: liveins: $sgpr10, $sgpr11, $vgpr1, $sgpr4_sgpr5, $sgpr6_sgpr7 20 ; GCN: bb.3.Flow: 21 ; GCN: liveins: $sgpr10, $sgpr11, $vgpr0, $vgpr1, $sgpr4_sgpr5, $sgpr6_sgpr7, $sgpr8_sgpr9 22 ; GCN: bb.4.end: 23 ; GCN: liveins: $sgpr11, $vgpr0, $sgpr4_sgpr5 24 ; GCN: $sgpr33 = frame-destroy COPY $sgpr11 25begin: 26 br label %lp_begin 27 28lp_end: ; preds = %lp_begin 29 %cur_idx = add nuw nsw i32 %idx, 1 30 %lp_term_cond = icmp eq i32 %cur_idx, 20 31 br i1 %lp_term_cond, label %end, label %lp_begin 32 33lp_begin: ; preds = %lp_end, %begin 34 %idx = phi i32 [ 0, %begin ], [ %cur_idx, %lp_end ] 35 %ptr = getelementptr inbounds %struct.Data, ptr addrspace(5) %arg, i32 0, i32 0, i32 %idx 36 %data = load i32, ptr addrspace(5) %ptr, align 4 37 %data_cmp = icmp eq i32 %data, %idx 38 br i1 %data_cmp, label %lp_end, label %end 39 40end: ; preds = %lp_end, %lp_begin 41 %ret_val = phi i32 [ 0, %lp_begin ], [ 1, %lp_end ] 42 ret i32 %ret_val 43} 44 45attributes #0 = { norecurse nounwind "frame-pointer"="all" } 46