forked from OSchip/llvm-project
46 lines
2.1 KiB
LLVM
46 lines
2.1 KiB
LLVM
; RUN: llc -march=amdgcn -mcpu=gfx900 -stop-after=prologepilog -verify-machineinstrs < %s | FileCheck -check-prefix=GCN %s
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; It is a small loop test that iterates over the array member of the structure argument passed byval to the function.
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; The loop code will keep the prologue and epilogue blocks apart.
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; The test is primarily to check the temp register used to preserve the earlier FP value
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; is live-in at every BB in the function.
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%struct.Data = type { [20 x i32] }
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define i32 @fp_save_restore_in_temp_sgpr(%struct.Data addrspace(5)* nocapture readonly byval(%struct.Data) align 4 %arg) #0 {
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; GCN-LABEL: name: fp_save_restore_in_temp_sgpr
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; GCN: bb.0.begin:
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; GCN: liveins: $sgpr7, $sgpr30_sgpr31
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; GCN: $sgpr7 = frame-setup COPY $sgpr33
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; GCN: $sgpr33 = frame-setup COPY $sgpr32
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; GCN: bb.1.lp_end:
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; GCN: liveins: $sgpr6, $sgpr7, $vgpr1, $sgpr4_sgpr5, $sgpr8_sgpr9, $sgpr10_sgpr11, $sgpr30_sgpr31
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; GCN: bb.2.lp_begin:
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; GCN: liveins: $sgpr6, $sgpr7, $vgpr1, $sgpr4_sgpr5, $sgpr8_sgpr9, $sgpr30_sgpr31
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; GCN: bb.3.Flow:
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; GCN: liveins: $sgpr6, $sgpr7, $vgpr0, $vgpr1, $sgpr4_sgpr5, $sgpr8_sgpr9, $sgpr10_sgpr11, $sgpr30_sgpr31
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; GCN: bb.4.end:
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; GCN: liveins: $sgpr7, $vgpr0, $sgpr4_sgpr5, $sgpr30_sgpr31
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; GCN: $sgpr33 = frame-destroy COPY $sgpr7
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begin:
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br label %lp_begin
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lp_end: ; preds = %lp_begin
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%cur_idx = add nuw nsw i32 %idx, 1
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%lp_term_cond = icmp eq i32 %cur_idx, 20
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br i1 %lp_term_cond, label %end, label %lp_begin
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lp_begin: ; preds = %lp_end, %begin
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%idx = phi i32 [ 0, %begin ], [ %cur_idx, %lp_end ]
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%ptr = getelementptr inbounds %struct.Data, %struct.Data addrspace(5)* %arg, i32 0, i32 0, i32 %idx
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%data = load i32, i32 addrspace(5)* %ptr, align 4
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%data_cmp = icmp eq i32 %data, %idx
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br i1 %data_cmp, label %lp_end, label %end
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end: ; preds = %lp_end, %lp_begin
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%ret_val = phi i32 [ 0, %lp_begin ], [ 1, %lp_end ]
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ret i32 %ret_val
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}
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attributes #0 = { norecurse nounwind "frame-pointer"="all" }
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