| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt -loop-vectorize -force-vector-width=4 -force-vector-interleave=1 -S %s | FileCheck %s |
| |
| |
| @p = external local_unnamed_addr global [257 x i32], align 16 |
| @q = external local_unnamed_addr global [257 x i32], align 16 |
| |
| ; Test case for PR43398. |
| |
| define void @can_sink_after_store(i32 %x, i32* %ptr, i64 %tc) local_unnamed_addr #0 { |
| ; CHECK-LABEL: @can_sink_after_store( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: br label [[PREHEADER:%.*]] |
| ; CHECK: preheader: |
| ; CHECK-NEXT: [[IDX_PHI_TRANS:%.*]] = getelementptr inbounds [257 x i32], [257 x i32]* @p, i64 0, i64 1 |
| ; CHECK-NEXT: [[DOTPRE:%.*]] = load i32, i32* [[IDX_PHI_TRANS]], align 4 |
| ; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]] |
| ; CHECK: vector.ph: |
| ; CHECK-NEXT: [[VECTOR_RECUR_INIT:%.*]] = insertelement <4 x i32> poison, i32 [[DOTPRE]], i32 3 |
| ; CHECK-NEXT: [[BROADCAST_SPLATINSERT:%.*]] = insertelement <4 x i32> poison, i32 [[X:%.*]], i32 0 |
| ; CHECK-NEXT: [[BROADCAST_SPLAT:%.*]] = shufflevector <4 x i32> [[BROADCAST_SPLATINSERT]], <4 x i32> poison, <4 x i32> zeroinitializer |
| ; CHECK-NEXT: br label [[VECTOR_BODY:%.*]] |
| ; CHECK: vector.body: |
| ; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[VECTOR_RECUR:%.*]] = phi <4 x i32> [ [[VECTOR_RECUR_INIT]], [[VECTOR_PH]] ], [ [[WIDE_LOAD:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[OFFSET_IDX:%.*]] = add i64 1, [[INDEX]] |
| ; CHECK-NEXT: [[TMP0:%.*]] = add i64 [[OFFSET_IDX]], 0 |
| ; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds [257 x i32], [257 x i32]* @p, i64 0, i64 [[TMP0]] |
| ; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds i32, i32* [[TMP1]], i32 0 |
| ; CHECK-NEXT: [[TMP3:%.*]] = bitcast i32* [[TMP2]] to <4 x i32>* |
| ; CHECK-NEXT: [[WIDE_LOAD]] = load <4 x i32>, <4 x i32>* [[TMP3]], align 4 |
| ; CHECK-NEXT: [[TMP4:%.*]] = shufflevector <4 x i32> [[VECTOR_RECUR]], <4 x i32> [[WIDE_LOAD]], <4 x i32> <i32 3, i32 4, i32 5, i32 6> |
| ; CHECK-NEXT: [[TMP5:%.*]] = add <4 x i32> [[TMP4]], [[BROADCAST_SPLAT]] |
| ; CHECK-NEXT: [[TMP6:%.*]] = add <4 x i32> [[TMP5]], [[WIDE_LOAD]] |
| ; CHECK-NEXT: [[TMP7:%.*]] = getelementptr inbounds [257 x i32], [257 x i32]* @q, i64 0, i64 [[TMP0]] |
| ; CHECK-NEXT: [[TMP8:%.*]] = getelementptr inbounds i32, i32* [[TMP7]], i32 0 |
| ; CHECK-NEXT: [[TMP9:%.*]] = bitcast i32* [[TMP8]] to <4 x i32>* |
| ; CHECK-NEXT: store <4 x i32> [[TMP6]], <4 x i32>* [[TMP9]], align 4 |
| ; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4 |
| ; CHECK-NEXT: [[TMP10:%.*]] = icmp eq i64 [[INDEX_NEXT]], 1996 |
| ; CHECK-NEXT: br i1 [[TMP10]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]] |
| ; CHECK: middle.block: |
| ; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 1999, 1996 |
| ; CHECK-NEXT: [[VECTOR_RECUR_EXTRACT:%.*]] = extractelement <4 x i32> [[WIDE_LOAD]], i32 3 |
| ; CHECK-NEXT: [[VECTOR_RECUR_EXTRACT_FOR_PHI:%.*]] = extractelement <4 x i32> [[WIDE_LOAD]], i32 2 |
| ; CHECK-NEXT: br i1 [[CMP_N]], label [[EXIT:%.*]], label [[SCALAR_PH]] |
| ; CHECK: scalar.ph: |
| ; CHECK-NEXT: [[SCALAR_RECUR_INIT:%.*]] = phi i32 [ [[DOTPRE]], [[PREHEADER]] ], [ [[VECTOR_RECUR_EXTRACT]], [[MIDDLE_BLOCK]] ] |
| ; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 1997, [[MIDDLE_BLOCK]] ], [ 1, [[PREHEADER]] ] |
| ; CHECK-NEXT: br label [[FOR:%.*]] |
| ; CHECK: for: |
| ; CHECK-NEXT: [[SCALAR_RECUR:%.*]] = phi i32 [ [[SCALAR_RECUR_INIT]], [[SCALAR_PH]] ], [ [[PRE_NEXT:%.*]], [[FOR]] ] |
| ; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[FOR]] ] |
| ; CHECK-NEXT: [[ADD_1:%.*]] = add i32 [[SCALAR_RECUR]], [[X]] |
| ; CHECK-NEXT: [[IDX_1:%.*]] = getelementptr inbounds [257 x i32], [257 x i32]* @p, i64 0, i64 [[IV]] |
| ; CHECK-NEXT: [[PRE_NEXT]] = load i32, i32* [[IDX_1]], align 4 |
| ; CHECK-NEXT: [[ADD_2:%.*]] = add i32 [[ADD_1]], [[PRE_NEXT]] |
| ; CHECK-NEXT: [[IDX_2:%.*]] = getelementptr inbounds [257 x i32], [257 x i32]* @q, i64 0, i64 [[IV]] |
| ; CHECK-NEXT: store i32 [[ADD_2]], i32* [[IDX_2]], align 4 |
| ; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1 |
| ; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[IV_NEXT]], 2000 |
| ; CHECK-NEXT: br i1 [[EXITCOND]], label [[EXIT]], label [[FOR]], !llvm.loop [[LOOP2:![0-9]+]] |
| ; CHECK: exit: |
| ; CHECK-NEXT: ret void |
| ; |
| |
| entry: |
| br label %preheader |
| |
| preheader: |
| %idx.phi.trans = getelementptr inbounds [257 x i32], [257 x i32]* @p, i64 0, i64 1 |
| %.pre = load i32, i32* %idx.phi.trans, align 4 |
| br label %for |
| |
| for: |
| %pre.phi = phi i32 [ %.pre, %preheader ], [ %pre.next, %for ] |
| %iv = phi i64 [ 1, %preheader ], [ %iv.next, %for ] |
| %add.1 = add i32 %pre.phi, %x |
| %idx.1 = getelementptr inbounds [257 x i32], [257 x i32]* @p, i64 0, i64 %iv |
| %pre.next = load i32, i32* %idx.1, align 4 |
| %add.2 = add i32 %add.1, %pre.next |
| %idx.2 = getelementptr inbounds [257 x i32], [257 x i32]* @q, i64 0, i64 %iv |
| store i32 %add.2, i32* %idx.2, align 4 |
| %iv.next = add nuw nsw i64 %iv, 1 |
| %exitcond = icmp eq i64 %iv.next, 2000 |
| br i1 %exitcond, label %exit, label %for |
| |
| exit: |
| ret void |
| } |
| |
| ; We can sink potential trapping instructions, as this will only delay the trap |
| ; and not introduce traps on additional paths. |
| define void @sink_sdiv(i32 %x, i32* %ptr, i64 %tc) local_unnamed_addr #0 { |
| ; CHECK-LABEL: @sink_sdiv( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: br label [[PREHEADER:%.*]] |
| ; CHECK: preheader: |
| ; CHECK-NEXT: [[IDX_PHI_TRANS:%.*]] = getelementptr inbounds [257 x i32], [257 x i32]* @p, i64 0, i64 1 |
| ; CHECK-NEXT: [[DOTPRE:%.*]] = load i32, i32* [[IDX_PHI_TRANS]], align 4 |
| ; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]] |
| ; CHECK: vector.ph: |
| ; CHECK-NEXT: [[VECTOR_RECUR_INIT:%.*]] = insertelement <4 x i32> poison, i32 [[DOTPRE]], i32 3 |
| ; CHECK-NEXT: [[BROADCAST_SPLATINSERT:%.*]] = insertelement <4 x i32> poison, i32 [[X:%.*]], i32 0 |
| ; CHECK-NEXT: [[BROADCAST_SPLAT:%.*]] = shufflevector <4 x i32> [[BROADCAST_SPLATINSERT]], <4 x i32> poison, <4 x i32> zeroinitializer |
| ; CHECK-NEXT: br label [[VECTOR_BODY:%.*]] |
| ; CHECK: vector.body: |
| ; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[VECTOR_RECUR:%.*]] = phi <4 x i32> [ [[VECTOR_RECUR_INIT]], [[VECTOR_PH]] ], [ [[WIDE_LOAD:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[OFFSET_IDX:%.*]] = add i64 1, [[INDEX]] |
| ; CHECK-NEXT: [[TMP0:%.*]] = add i64 [[OFFSET_IDX]], 0 |
| ; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds [257 x i32], [257 x i32]* @p, i64 0, i64 [[TMP0]] |
| ; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds i32, i32* [[TMP1]], i32 0 |
| ; CHECK-NEXT: [[TMP3:%.*]] = bitcast i32* [[TMP2]] to <4 x i32>* |
| ; CHECK-NEXT: [[WIDE_LOAD]] = load <4 x i32>, <4 x i32>* [[TMP3]], align 4 |
| ; CHECK-NEXT: [[TMP4:%.*]] = shufflevector <4 x i32> [[VECTOR_RECUR]], <4 x i32> [[WIDE_LOAD]], <4 x i32> <i32 3, i32 4, i32 5, i32 6> |
| ; CHECK-NEXT: [[TMP5:%.*]] = sdiv <4 x i32> [[TMP4]], [[BROADCAST_SPLAT]] |
| ; CHECK-NEXT: [[TMP6:%.*]] = add <4 x i32> [[TMP5]], [[WIDE_LOAD]] |
| ; CHECK-NEXT: [[TMP7:%.*]] = getelementptr inbounds [257 x i32], [257 x i32]* @q, i64 0, i64 [[TMP0]] |
| ; CHECK-NEXT: [[TMP8:%.*]] = getelementptr inbounds i32, i32* [[TMP7]], i32 0 |
| ; CHECK-NEXT: [[TMP9:%.*]] = bitcast i32* [[TMP8]] to <4 x i32>* |
| ; CHECK-NEXT: store <4 x i32> [[TMP6]], <4 x i32>* [[TMP9]], align 4 |
| ; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4 |
| ; CHECK-NEXT: [[TMP10:%.*]] = icmp eq i64 [[INDEX_NEXT]], 1996 |
| ; CHECK-NEXT: br i1 [[TMP10]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP4:![0-9]+]] |
| ; CHECK: middle.block: |
| ; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 1999, 1996 |
| ; CHECK-NEXT: [[VECTOR_RECUR_EXTRACT:%.*]] = extractelement <4 x i32> [[WIDE_LOAD]], i32 3 |
| ; CHECK-NEXT: [[VECTOR_RECUR_EXTRACT_FOR_PHI:%.*]] = extractelement <4 x i32> [[WIDE_LOAD]], i32 2 |
| ; CHECK-NEXT: br i1 [[CMP_N]], label [[EXIT:%.*]], label [[SCALAR_PH]] |
| ; CHECK: scalar.ph: |
| ; CHECK-NEXT: [[SCALAR_RECUR_INIT:%.*]] = phi i32 [ [[DOTPRE]], [[PREHEADER]] ], [ [[VECTOR_RECUR_EXTRACT]], [[MIDDLE_BLOCK]] ] |
| ; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 1997, [[MIDDLE_BLOCK]] ], [ 1, [[PREHEADER]] ] |
| ; CHECK-NEXT: br label [[FOR:%.*]] |
| ; CHECK: for: |
| ; CHECK-NEXT: [[SCALAR_RECUR:%.*]] = phi i32 [ [[SCALAR_RECUR_INIT]], [[SCALAR_PH]] ], [ [[PRE_NEXT:%.*]], [[FOR]] ] |
| ; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[FOR]] ] |
| ; CHECK-NEXT: [[DIV_1:%.*]] = sdiv i32 [[SCALAR_RECUR]], [[X]] |
| ; CHECK-NEXT: [[IDX_1:%.*]] = getelementptr inbounds [257 x i32], [257 x i32]* @p, i64 0, i64 [[IV]] |
| ; CHECK-NEXT: [[PRE_NEXT]] = load i32, i32* [[IDX_1]], align 4 |
| ; CHECK-NEXT: [[ADD_2:%.*]] = add i32 [[DIV_1]], [[PRE_NEXT]] |
| ; CHECK-NEXT: [[IDX_2:%.*]] = getelementptr inbounds [257 x i32], [257 x i32]* @q, i64 0, i64 [[IV]] |
| ; CHECK-NEXT: store i32 [[ADD_2]], i32* [[IDX_2]], align 4 |
| ; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1 |
| ; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[IV_NEXT]], 2000 |
| ; CHECK-NEXT: br i1 [[EXITCOND]], label [[EXIT]], label [[FOR]], !llvm.loop [[LOOP5:![0-9]+]] |
| ; CHECK: exit: |
| ; CHECK-NEXT: ret void |
| ; |
| |
| entry: |
| br label %preheader |
| |
| preheader: |
| %idx.phi.trans = getelementptr inbounds [257 x i32], [257 x i32]* @p, i64 0, i64 1 |
| %.pre = load i32, i32* %idx.phi.trans, align 4 |
| br label %for |
| |
| for: |
| %pre.phi = phi i32 [ %.pre, %preheader ], [ %pre.next, %for ] |
| %iv = phi i64 [ 1, %preheader ], [ %iv.next, %for ] |
| %div.1 = sdiv i32 %pre.phi, %x |
| %idx.1 = getelementptr inbounds [257 x i32], [257 x i32]* @p, i64 0, i64 %iv |
| %pre.next = load i32, i32* %idx.1, align 4 |
| %add.2 = add i32 %div.1, %pre.next |
| %idx.2 = getelementptr inbounds [257 x i32], [257 x i32]* @q, i64 0, i64 %iv |
| store i32 %add.2, i32* %idx.2, align 4 |
| %iv.next = add nuw nsw i64 %iv, 1 |
| %exitcond = icmp eq i64 %iv.next, 2000 |
| br i1 %exitcond, label %exit, label %for |
| |
| exit: |
| ret void |
| } |
| |
| ; Sink users of %pre.phi recursively. |
| define void @can_sink_with_additional_user(i32 %x, i32* %ptr, i64 %tc) { |
| ; CHECK-LABEL: @can_sink_with_additional_user( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: br label [[PREHEADER:%.*]] |
| ; CHECK: preheader: |
| ; CHECK-NEXT: [[IDX_PHI_TRANS:%.*]] = getelementptr inbounds [257 x i32], [257 x i32]* @p, i64 0, i64 1 |
| ; CHECK-NEXT: [[DOTPRE:%.*]] = load i32, i32* [[IDX_PHI_TRANS]], align 4 |
| ; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]] |
| ; CHECK: vector.ph: |
| ; CHECK-NEXT: [[VECTOR_RECUR_INIT:%.*]] = insertelement <4 x i32> poison, i32 [[DOTPRE]], i32 3 |
| ; CHECK-NEXT: [[BROADCAST_SPLATINSERT:%.*]] = insertelement <4 x i32> poison, i32 [[X:%.*]], i32 0 |
| ; CHECK-NEXT: [[BROADCAST_SPLAT:%.*]] = shufflevector <4 x i32> [[BROADCAST_SPLATINSERT]], <4 x i32> poison, <4 x i32> zeroinitializer |
| ; CHECK-NEXT: br label [[VECTOR_BODY:%.*]] |
| ; CHECK: vector.body: |
| ; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[VECTOR_RECUR:%.*]] = phi <4 x i32> [ [[VECTOR_RECUR_INIT]], [[VECTOR_PH]] ], [ [[WIDE_LOAD:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[OFFSET_IDX:%.*]] = add i64 1, [[INDEX]] |
| ; CHECK-NEXT: [[TMP0:%.*]] = add i64 [[OFFSET_IDX]], 0 |
| ; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds [257 x i32], [257 x i32]* @p, i64 0, i64 [[TMP0]] |
| ; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds i32, i32* [[TMP1]], i32 0 |
| ; CHECK-NEXT: [[TMP3:%.*]] = bitcast i32* [[TMP2]] to <4 x i32>* |
| ; CHECK-NEXT: [[WIDE_LOAD]] = load <4 x i32>, <4 x i32>* [[TMP3]], align 4 |
| ; CHECK-NEXT: [[TMP4:%.*]] = shufflevector <4 x i32> [[VECTOR_RECUR]], <4 x i32> [[WIDE_LOAD]], <4 x i32> <i32 3, i32 4, i32 5, i32 6> |
| ; CHECK-NEXT: [[TMP5:%.*]] = add <4 x i32> [[TMP4]], [[BROADCAST_SPLAT]] |
| ; CHECK-NEXT: [[TMP6:%.*]] = add <4 x i32> [[TMP5]], [[BROADCAST_SPLAT]] |
| ; CHECK-NEXT: [[TMP7:%.*]] = add <4 x i32> [[TMP5]], [[WIDE_LOAD]] |
| ; CHECK-NEXT: [[TMP8:%.*]] = add <4 x i32> [[TMP6]], [[TMP7]] |
| ; CHECK-NEXT: [[TMP9:%.*]] = getelementptr inbounds [257 x i32], [257 x i32]* @q, i64 0, i64 [[TMP0]] |
| ; CHECK-NEXT: [[TMP10:%.*]] = getelementptr inbounds i32, i32* [[TMP9]], i32 0 |
| ; CHECK-NEXT: [[TMP11:%.*]] = bitcast i32* [[TMP10]] to <4 x i32>* |
| ; CHECK-NEXT: store <4 x i32> [[TMP8]], <4 x i32>* [[TMP11]], align 4 |
| ; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4 |
| ; CHECK-NEXT: [[TMP12:%.*]] = icmp eq i64 [[INDEX_NEXT]], 1996 |
| ; CHECK-NEXT: br i1 [[TMP12]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP6:![0-9]+]] |
| ; CHECK: middle.block: |
| ; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 1999, 1996 |
| ; CHECK-NEXT: [[VECTOR_RECUR_EXTRACT:%.*]] = extractelement <4 x i32> [[WIDE_LOAD]], i32 3 |
| ; CHECK-NEXT: [[VECTOR_RECUR_EXTRACT_FOR_PHI:%.*]] = extractelement <4 x i32> [[WIDE_LOAD]], i32 2 |
| ; CHECK-NEXT: br i1 [[CMP_N]], label [[EXIT:%.*]], label [[SCALAR_PH]] |
| ; CHECK: scalar.ph: |
| ; CHECK-NEXT: [[SCALAR_RECUR_INIT:%.*]] = phi i32 [ [[DOTPRE]], [[PREHEADER]] ], [ [[VECTOR_RECUR_EXTRACT]], [[MIDDLE_BLOCK]] ] |
| ; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 1997, [[MIDDLE_BLOCK]] ], [ 1, [[PREHEADER]] ] |
| ; CHECK-NEXT: br label [[FOR:%.*]] |
| ; CHECK: for: |
| ; CHECK-NEXT: [[SCALAR_RECUR:%.*]] = phi i32 [ [[SCALAR_RECUR_INIT]], [[SCALAR_PH]] ], [ [[PRE_NEXT:%.*]], [[FOR]] ] |
| ; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[FOR]] ] |
| ; CHECK-NEXT: [[ADD_1:%.*]] = add i32 [[SCALAR_RECUR]], [[X]] |
| ; CHECK-NEXT: [[ADD_2:%.*]] = add i32 [[ADD_1]], [[X]] |
| ; CHECK-NEXT: [[IDX_1:%.*]] = getelementptr inbounds [257 x i32], [257 x i32]* @p, i64 0, i64 [[IV]] |
| ; CHECK-NEXT: [[PRE_NEXT]] = load i32, i32* [[IDX_1]], align 4 |
| ; CHECK-NEXT: [[ADD_3:%.*]] = add i32 [[ADD_1]], [[PRE_NEXT]] |
| ; CHECK-NEXT: [[ADD_4:%.*]] = add i32 [[ADD_2]], [[ADD_3]] |
| ; CHECK-NEXT: [[IDX_2:%.*]] = getelementptr inbounds [257 x i32], [257 x i32]* @q, i64 0, i64 [[IV]] |
| ; CHECK-NEXT: store i32 [[ADD_4]], i32* [[IDX_2]], align 4 |
| ; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1 |
| ; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[IV_NEXT]], 2000 |
| ; CHECK-NEXT: br i1 [[EXITCOND]], label [[EXIT]], label [[FOR]], !llvm.loop [[LOOP7:![0-9]+]] |
| ; CHECK: exit: |
| ; CHECK-NEXT: ret void |
| ; |
| |
| |
| |
| entry: |
| br label %preheader |
| |
| preheader: |
| %idx.phi.trans = getelementptr inbounds [257 x i32], [257 x i32]* @p, i64 0, i64 1 |
| %.pre = load i32, i32* %idx.phi.trans, align 4 |
| br label %for |
| |
| for: |
| %pre.phi = phi i32 [ %.pre, %preheader ], [ %pre.next, %for ] |
| %iv = phi i64 [ 1, %preheader ], [ %iv.next, %for ] |
| %add.1 = add i32 %pre.phi, %x |
| %add.2 = add i32 %add.1, %x |
| %idx.1 = getelementptr inbounds [257 x i32], [257 x i32]* @p, i64 0, i64 %iv |
| %pre.next = load i32, i32* %idx.1, align 4 |
| %add.3 = add i32 %add.1, %pre.next |
| %add.4 = add i32 %add.2, %add.3 |
| %idx.2 = getelementptr inbounds [257 x i32], [257 x i32]* @q, i64 0, i64 %iv |
| store i32 %add.4, i32* %idx.2, align 4 |
| %iv.next = add nuw nsw i64 %iv, 1 |
| %exitcond = icmp eq i64 %iv.next, 2000 |
| br i1 %exitcond, label %exit, label %for |
| |
| exit: |
| ret void |
| } |
| |
| ; FIXME: We can sink a store, if we can guarantee that it does not alias any |
| ; loads/stores in between. |
| define void @cannot_sink_store(i32 %x, i32* %ptr, i64 %tc) { |
| ; CHECK-LABEL: @cannot_sink_store( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: br label [[PREHEADER:%.*]] |
| ; CHECK: preheader: |
| ; CHECK-NEXT: [[IDX_PHI_TRANS:%.*]] = getelementptr inbounds [257 x i32], [257 x i32]* @p, i64 0, i64 1 |
| ; CHECK-NEXT: [[DOTPRE:%.*]] = load i32, i32* [[IDX_PHI_TRANS]], align 4 |
| ; CHECK-NEXT: br label [[FOR:%.*]] |
| ; CHECK: for: |
| ; CHECK-NEXT: [[PRE_PHI:%.*]] = phi i32 [ [[DOTPRE]], [[PREHEADER]] ], [ [[PRE_NEXT:%.*]], [[FOR]] ] |
| ; CHECK-NEXT: [[IV:%.*]] = phi i64 [ 1, [[PREHEADER]] ], [ [[IV_NEXT:%.*]], [[FOR]] ] |
| ; CHECK-NEXT: [[ADD_1:%.*]] = add i32 [[PRE_PHI]], [[X:%.*]] |
| ; CHECK-NEXT: store i32 [[ADD_1]], i32* [[PTR:%.*]], align 4 |
| ; CHECK-NEXT: [[IDX_1:%.*]] = getelementptr inbounds [257 x i32], [257 x i32]* @p, i64 0, i64 [[IV]] |
| ; CHECK-NEXT: [[PRE_NEXT]] = load i32, i32* [[IDX_1]], align 4 |
| ; CHECK-NEXT: [[ADD_2:%.*]] = add i32 [[ADD_1]], [[PRE_NEXT]] |
| ; CHECK-NEXT: [[IDX_2:%.*]] = getelementptr inbounds [257 x i32], [257 x i32]* @q, i64 0, i64 [[IV]] |
| ; CHECK-NEXT: store i32 [[ADD_2]], i32* [[IDX_2]], align 4 |
| ; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1 |
| ; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[IV_NEXT]], 2000 |
| ; CHECK-NEXT: br i1 [[EXITCOND]], label [[EXIT:%.*]], label [[FOR]] |
| ; CHECK: exit: |
| ; CHECK-NEXT: ret void |
| ; |
| |
| |
| |
| entry: |
| br label %preheader |
| |
| preheader: |
| %idx.phi.trans = getelementptr inbounds [257 x i32], [257 x i32]* @p, i64 0, i64 1 |
| %.pre = load i32, i32* %idx.phi.trans, align 4 |
| br label %for |
| |
| for: |
| %pre.phi = phi i32 [ %.pre, %preheader ], [ %pre.next, %for ] |
| %iv = phi i64 [ 1, %preheader ], [ %iv.next, %for ] |
| %add.1 = add i32 %pre.phi, %x |
| store i32 %add.1, i32* %ptr |
| %idx.1 = getelementptr inbounds [257 x i32], [257 x i32]* @p, i64 0, i64 %iv |
| %pre.next = load i32, i32* %idx.1, align 4 |
| %add.2 = add i32 %add.1, %pre.next |
| %idx.2 = getelementptr inbounds [257 x i32], [257 x i32]* @q, i64 0, i64 %iv |
| store i32 %add.2, i32* %idx.2, align 4 |
| %iv.next = add nuw nsw i64 %iv, 1 |
| %exitcond = icmp eq i64 %iv.next, 2000 |
| br i1 %exitcond, label %exit, label %for |
| |
| exit: |
| ret void |
| } |
| |
| ; Some kinds of reductions are not detected by IVDescriptors. If we have a |
| ; cycle, we cannot sink it. |
| define void @cannot_sink_reduction(i32 %x, i32* %ptr, i64 %tc) { |
| ; CHECK-LABEL: @cannot_sink_reduction( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: br label [[PREHEADER:%.*]] |
| ; CHECK: preheader: |
| ; CHECK-NEXT: [[IDX_PHI_TRANS:%.*]] = getelementptr inbounds [257 x i32], [257 x i32]* @p, i64 0, i64 1 |
| ; CHECK-NEXT: [[DOTPRE:%.*]] = load i32, i32* [[IDX_PHI_TRANS]], align 4 |
| ; CHECK-NEXT: br label [[FOR:%.*]] |
| ; CHECK: for: |
| ; CHECK-NEXT: [[PRE_PHI:%.*]] = phi i32 [ [[DOTPRE]], [[PREHEADER]] ], [ [[D:%.*]], [[FOR]] ] |
| ; CHECK-NEXT: [[IV:%.*]] = phi i64 [ 1, [[PREHEADER]] ], [ [[IV_NEXT:%.*]], [[FOR]] ] |
| ; CHECK-NEXT: [[D]] = sdiv i32 [[PRE_PHI]], [[X:%.*]] |
| ; CHECK-NEXT: [[IDX_1:%.*]] = getelementptr inbounds [257 x i32], [257 x i32]* @p, i64 0, i64 [[IV]] |
| ; CHECK-NEXT: [[PRE_NEXT:%.*]] = load i32, i32* [[IDX_1]], align 4 |
| ; CHECK-NEXT: [[ADD_2:%.*]] = add i32 [[X]], [[PRE_NEXT]] |
| ; CHECK-NEXT: [[IDX_2:%.*]] = getelementptr inbounds [257 x i32], [257 x i32]* @q, i64 0, i64 [[IV]] |
| ; CHECK-NEXT: store i32 [[ADD_2]], i32* [[IDX_2]], align 4 |
| ; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1 |
| ; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[IV_NEXT]], 2000 |
| ; CHECK-NEXT: br i1 [[EXITCOND]], label [[EXIT:%.*]], label [[FOR]] |
| ; CHECK: exit: |
| ; CHECK-NEXT: ret void |
| ; |
| |
| |
| |
| ; CHECK-NET: ret void |
| entry: |
| br label %preheader |
| |
| preheader: |
| %idx.phi.trans = getelementptr inbounds [257 x i32], [257 x i32]* @p, i64 0, i64 1 |
| %.pre = load i32, i32* %idx.phi.trans, align 4 |
| br label %for |
| |
| for: |
| %pre.phi = phi i32 [ %.pre, %preheader ], [ %d, %for ] |
| %iv = phi i64 [ 1, %preheader ], [ %iv.next, %for ] |
| %d = sdiv i32 %pre.phi, %x |
| %idx.1 = getelementptr inbounds [257 x i32], [257 x i32]* @p, i64 0, i64 %iv |
| %pre.next = load i32, i32* %idx.1, align 4 |
| %add.2 = add i32 %x, %pre.next |
| %idx.2 = getelementptr inbounds [257 x i32], [257 x i32]* @q, i64 0, i64 %iv |
| store i32 %add.2, i32* %idx.2, align 4 |
| %iv.next = add nuw nsw i64 %iv, 1 |
| %exitcond = icmp eq i64 %iv.next, 2000 |
| br i1 %exitcond, label %exit, label %for |
| |
| exit: |
| ret void |
| } |
| |
| ; TODO: We should be able to sink %tmp38 after %tmp60. |
| define void @instruction_with_2_FOR_operands() { |
| ; CHECK-LABEL: @instruction_with_2_FOR_operands( |
| ; CHECK-NEXT: bb: |
| ; CHECK-NEXT: br label [[BB13:%.*]] |
| ; CHECK: bb13: |
| ; CHECK-NEXT: [[TMP37:%.*]] = phi float [ [[TMP60:%.*]], [[BB13]] ], [ undef, [[BB:%.*]] ] |
| ; CHECK-NEXT: [[TMP27:%.*]] = phi float [ [[TMP49:%.*]], [[BB13]] ], [ undef, [[BB]] ] |
| ; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[INDVARS_IV_NEXT:%.*]], [[BB13]] ], [ 0, [[BB]] ] |
| ; CHECK-NEXT: [[TMP38:%.*]] = fmul fast float [[TMP37]], [[TMP27]] |
| ; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1 |
| ; CHECK-NEXT: [[TMP49]] = load float, float* undef, align 4 |
| ; CHECK-NEXT: [[TMP60]] = load float, float* undef, align 4 |
| ; CHECK-NEXT: [[TMP12:%.*]] = icmp slt i64 [[INDVARS_IV]], undef |
| ; CHECK-NEXT: br i1 [[TMP12]], label [[BB13]], label [[BB74:%.*]] |
| ; CHECK: bb74: |
| ; CHECK-NEXT: ret void |
| ; |
| |
| |
| bb: |
| br label %bb13 |
| |
| bb13: ; preds = %bb13, %bb |
| %tmp37 = phi float [ %tmp60, %bb13 ], [ undef, %bb ] |
| %tmp27 = phi float [ %tmp49, %bb13 ], [ undef, %bb ] |
| %indvars.iv = phi i64 [ %indvars.iv.next, %bb13 ], [ 0, %bb ] |
| %tmp38 = fmul fast float %tmp37, %tmp27 |
| %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 |
| %tmp49 = load float, float* undef, align 4 |
| %tmp60 = load float, float* undef, align 4 |
| %tmp12 = icmp slt i64 %indvars.iv, undef |
| br i1 %tmp12, label %bb13, label %bb74 |
| |
| bb74: ; preds = %bb13 |
| ret void |
| } |
| |
| ; The (first) reason `%first_time.1` cannot be sunk is because it appears outside |
| ; the header and is not dominated by Previous. The fact that it feeds Previous |
| ; is a second sinking-preventing reason. |
| define void @cannot_sink_phi(i32* %ptr) { |
| ; CHECK-LABEL: @cannot_sink_phi( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: br label [[LOOP_HEADER:%.*]] |
| ; CHECK: loop.header: |
| ; CHECK-NEXT: [[IV:%.*]] = phi i64 [ 1, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ] |
| ; CHECK-NEXT: [[FOR:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[FOR_NEXT:%.*]], [[LOOP_LATCH]] ] |
| ; CHECK-NEXT: [[C_1:%.*]] = icmp ult i64 [[IV]], 500 |
| ; CHECK-NEXT: br i1 [[C_1]], label [[IF_TRUEBB:%.*]], label [[IF_FALSEBB:%.*]] |
| ; CHECK: if.truebb: |
| ; CHECK-NEXT: br label [[LOOP_LATCH]] |
| ; CHECK: if.falsebb: |
| ; CHECK-NEXT: br label [[LOOP_LATCH]] |
| ; CHECK: loop.latch: |
| ; CHECK-NEXT: [[FIRST_TIME_1:%.*]] = phi i32 [ 20, [[IF_TRUEBB]] ], [ [[FOR]], [[IF_FALSEBB]] ] |
| ; CHECK-NEXT: [[C_2:%.*]] = icmp ult i64 [[IV]], 800 |
| ; CHECK-NEXT: [[FOR_NEXT]] = select i1 [[C_2]], i32 30, i32 [[FIRST_TIME_1]] |
| ; CHECK-NEXT: [[PTR_IDX:%.*]] = getelementptr i32, i32* [[PTR:%.*]], i64 [[IV]] |
| ; CHECK-NEXT: store i32 [[FOR_NEXT]], i32* [[PTR_IDX]], align 4 |
| ; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1 |
| ; CHECK-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i64 [[IV_NEXT]], 1000 |
| ; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[EXIT:%.*]], label [[LOOP_HEADER]] |
| ; CHECK: exit: |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| br label %loop.header |
| |
| loop.header: |
| %iv = phi i64 [ 1, %entry ], [ %iv.next, %loop.latch ] |
| %for = phi i32 [ 0, %entry ], [ %for.next, %loop.latch ] |
| %c.1 = icmp ult i64 %iv, 500 |
| br i1 %c.1, label %if.truebb, label %if.falsebb |
| |
| if.truebb: |
| br label %loop.latch |
| |
| if.falsebb: |
| br label %loop.latch |
| |
| loop.latch: |
| %first_time.1 = phi i32 [ 20, %if.truebb ], [ %for, %if.falsebb ] |
| %c.2 = icmp ult i64 %iv, 800 |
| %for.next = select i1 %c.2, i32 30, i32 %first_time.1 |
| %ptr.idx = getelementptr i32, i32* %ptr, i64 %iv |
| store i32 %for.next, i32* %ptr.idx |
| %iv.next = add nuw nsw i64 %iv, 1 |
| %exitcond.not = icmp eq i64 %iv.next, 1000 |
| br i1 %exitcond.not, label %exit, label %loop.header |
| |
| exit: |
| ret void |
| } |
| |
| ; A recurrence in a multiple exit loop. |
| define i16 @multiple_exit(i16* %p, i32 %n) { |
| ; CHECK-LABEL: @multiple_exit( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[SMAX:%.*]] = call i32 @llvm.smax.i32(i32 [[N:%.*]], i32 0) |
| ; CHECK-NEXT: [[UMIN:%.*]] = call i32 @llvm.umin.i32(i32 [[SMAX]], i32 2096) |
| ; CHECK-NEXT: [[TMP0:%.*]] = add nuw nsw i32 [[UMIN]], 1 |
| ; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ule i32 [[TMP0]], 4 |
| ; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]] |
| ; CHECK: vector.ph: |
| ; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i32 [[TMP0]], 4 |
| ; CHECK-NEXT: [[TMP1:%.*]] = icmp eq i32 [[N_MOD_VF]], 0 |
| ; CHECK-NEXT: [[TMP2:%.*]] = select i1 [[TMP1]], i32 4, i32 [[N_MOD_VF]] |
| ; CHECK-NEXT: [[N_VEC:%.*]] = sub i32 [[TMP0]], [[TMP2]] |
| ; CHECK-NEXT: br label [[VECTOR_BODY:%.*]] |
| ; CHECK: vector.body: |
| ; CHECK-NEXT: [[INDEX:%.*]] = phi i32 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[VEC_IND:%.*]] = phi <4 x i32> [ <i32 0, i32 1, i32 2, i32 3>, [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[VECTOR_RECUR:%.*]] = phi <4 x i16> [ <i16 poison, i16 poison, i16 poison, i16 0>, [[VECTOR_PH]] ], [ [[WIDE_LOAD:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[TMP3:%.*]] = add i32 [[INDEX]], 0 |
| ; CHECK-NEXT: [[TMP4:%.*]] = add i32 [[INDEX]], 1 |
| ; CHECK-NEXT: [[TMP5:%.*]] = add i32 [[INDEX]], 2 |
| ; CHECK-NEXT: [[TMP6:%.*]] = add i32 [[INDEX]], 3 |
| ; CHECK-NEXT: [[TMP7:%.*]] = sext i32 [[TMP3]] to i64 |
| ; CHECK-NEXT: [[TMP8:%.*]] = getelementptr inbounds i16, i16* [[P:%.*]], i64 [[TMP7]] |
| ; CHECK-NEXT: [[TMP9:%.*]] = getelementptr inbounds i16, i16* [[TMP8]], i32 0 |
| ; CHECK-NEXT: [[TMP10:%.*]] = bitcast i16* [[TMP9]] to <4 x i16>* |
| ; CHECK-NEXT: [[WIDE_LOAD]] = load <4 x i16>, <4 x i16>* [[TMP10]], align 2 |
| ; CHECK-NEXT: [[TMP11:%.*]] = shufflevector <4 x i16> [[VECTOR_RECUR]], <4 x i16> [[WIDE_LOAD]], <4 x i32> <i32 3, i32 4, i32 5, i32 6> |
| ; CHECK-NEXT: [[TMP12:%.*]] = bitcast i16* [[TMP9]] to <4 x i16>* |
| ; CHECK-NEXT: store <4 x i16> [[TMP11]], <4 x i16>* [[TMP12]], align 4 |
| ; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i32 [[INDEX]], 4 |
| ; CHECK-NEXT: [[VEC_IND_NEXT]] = add <4 x i32> [[VEC_IND]], <i32 4, i32 4, i32 4, i32 4> |
| ; CHECK-NEXT: [[TMP13:%.*]] = icmp eq i32 [[INDEX_NEXT]], [[N_VEC]] |
| ; CHECK-NEXT: br i1 [[TMP13]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP8:![0-9]+]] |
| ; CHECK: middle.block: |
| ; CHECK-NEXT: [[VECTOR_RECUR_EXTRACT:%.*]] = extractelement <4 x i16> [[WIDE_LOAD]], i32 3 |
| ; CHECK-NEXT: [[VECTOR_RECUR_EXTRACT_FOR_PHI:%.*]] = extractelement <4 x i16> [[WIDE_LOAD]], i32 2 |
| ; CHECK-NEXT: br label [[SCALAR_PH]] |
| ; CHECK: scalar.ph: |
| ; CHECK-NEXT: [[SCALAR_RECUR_INIT:%.*]] = phi i16 [ 0, [[ENTRY:%.*]] ], [ [[VECTOR_RECUR_EXTRACT]], [[MIDDLE_BLOCK]] ] |
| ; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i32 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY]] ] |
| ; CHECK-NEXT: br label [[FOR_COND:%.*]] |
| ; CHECK: for.cond: |
| ; CHECK-NEXT: [[I:%.*]] = phi i32 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[INC:%.*]], [[FOR_BODY:%.*]] ] |
| ; CHECK-NEXT: [[SCALAR_RECUR:%.*]] = phi i16 [ [[SCALAR_RECUR_INIT]], [[SCALAR_PH]] ], [ [[REC_NEXT:%.*]], [[FOR_BODY]] ] |
| ; CHECK-NEXT: [[IPROM:%.*]] = sext i32 [[I]] to i64 |
| ; CHECK-NEXT: [[B:%.*]] = getelementptr inbounds i16, i16* [[P]], i64 [[IPROM]] |
| ; CHECK-NEXT: [[REC_NEXT]] = load i16, i16* [[B]], align 2 |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[I]], [[N]] |
| ; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[IF_END:%.*]] |
| ; CHECK: for.body: |
| ; CHECK-NEXT: store i16 [[SCALAR_RECUR]], i16* [[B]], align 4 |
| ; CHECK-NEXT: [[INC]] = add nsw i32 [[I]], 1 |
| ; CHECK-NEXT: [[CMP2:%.*]] = icmp slt i32 [[I]], 2096 |
| ; CHECK-NEXT: br i1 [[CMP2]], label [[FOR_COND]], label [[IF_END]], !llvm.loop [[LOOP9:![0-9]+]] |
| ; CHECK: if.end: |
| ; CHECK-NEXT: [[REC_LCSSA:%.*]] = phi i16 [ [[SCALAR_RECUR]], [[FOR_BODY]] ], [ [[SCALAR_RECUR]], [[FOR_COND]] ] |
| ; CHECK-NEXT: ret i16 [[REC_LCSSA]] |
| ; |
| entry: |
| br label %for.cond |
| |
| for.cond: |
| %i = phi i32 [ 0, %entry ], [ %inc, %for.body ] |
| %rec = phi i16 [0, %entry], [ %rec.next, %for.body ] |
| %iprom = sext i32 %i to i64 |
| %b = getelementptr inbounds i16, i16* %p, i64 %iprom |
| %rec.next = load i16, i16* %b |
| %cmp = icmp slt i32 %i, %n |
| br i1 %cmp, label %for.body, label %if.end |
| |
| for.body: |
| store i16 %rec , i16* %b, align 4 |
| %inc = add nsw i32 %i, 1 |
| %cmp2 = icmp slt i32 %i, 2096 |
| br i1 %cmp2, label %for.cond, label %if.end |
| |
| if.end: |
| ret i16 %rec |
| } |
| |
| |
| ; A multiple exit case where one of the exiting edges involves a value |
| ; from the recurrence and one does not. |
| define i16 @multiple_exit2(i16* %p, i32 %n) { |
| ; CHECK-LABEL: @multiple_exit2( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[SMAX:%.*]] = call i32 @llvm.smax.i32(i32 [[N:%.*]], i32 0) |
| ; CHECK-NEXT: [[UMIN:%.*]] = call i32 @llvm.umin.i32(i32 [[SMAX]], i32 2096) |
| ; CHECK-NEXT: [[TMP0:%.*]] = add nuw nsw i32 [[UMIN]], 1 |
| ; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ule i32 [[TMP0]], 4 |
| ; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]] |
| ; CHECK: vector.ph: |
| ; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i32 [[TMP0]], 4 |
| ; CHECK-NEXT: [[TMP1:%.*]] = icmp eq i32 [[N_MOD_VF]], 0 |
| ; CHECK-NEXT: [[TMP2:%.*]] = select i1 [[TMP1]], i32 4, i32 [[N_MOD_VF]] |
| ; CHECK-NEXT: [[N_VEC:%.*]] = sub i32 [[TMP0]], [[TMP2]] |
| ; CHECK-NEXT: br label [[VECTOR_BODY:%.*]] |
| ; CHECK: vector.body: |
| ; CHECK-NEXT: [[INDEX:%.*]] = phi i32 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[VEC_IND:%.*]] = phi <4 x i32> [ <i32 0, i32 1, i32 2, i32 3>, [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[VECTOR_RECUR:%.*]] = phi <4 x i16> [ <i16 poison, i16 poison, i16 poison, i16 0>, [[VECTOR_PH]] ], [ [[WIDE_LOAD:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[TMP3:%.*]] = add i32 [[INDEX]], 0 |
| ; CHECK-NEXT: [[TMP4:%.*]] = add i32 [[INDEX]], 1 |
| ; CHECK-NEXT: [[TMP5:%.*]] = add i32 [[INDEX]], 2 |
| ; CHECK-NEXT: [[TMP6:%.*]] = add i32 [[INDEX]], 3 |
| ; CHECK-NEXT: [[TMP7:%.*]] = sext i32 [[TMP3]] to i64 |
| ; CHECK-NEXT: [[TMP8:%.*]] = getelementptr inbounds i16, i16* [[P:%.*]], i64 [[TMP7]] |
| ; CHECK-NEXT: [[TMP9:%.*]] = getelementptr inbounds i16, i16* [[TMP8]], i32 0 |
| ; CHECK-NEXT: [[TMP10:%.*]] = bitcast i16* [[TMP9]] to <4 x i16>* |
| ; CHECK-NEXT: [[WIDE_LOAD]] = load <4 x i16>, <4 x i16>* [[TMP10]], align 2 |
| ; CHECK-NEXT: [[TMP11:%.*]] = shufflevector <4 x i16> [[VECTOR_RECUR]], <4 x i16> [[WIDE_LOAD]], <4 x i32> <i32 3, i32 4, i32 5, i32 6> |
| ; CHECK-NEXT: [[TMP12:%.*]] = bitcast i16* [[TMP9]] to <4 x i16>* |
| ; CHECK-NEXT: store <4 x i16> [[TMP11]], <4 x i16>* [[TMP12]], align 4 |
| ; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i32 [[INDEX]], 4 |
| ; CHECK-NEXT: [[VEC_IND_NEXT]] = add <4 x i32> [[VEC_IND]], <i32 4, i32 4, i32 4, i32 4> |
| ; CHECK-NEXT: [[TMP13:%.*]] = icmp eq i32 [[INDEX_NEXT]], [[N_VEC]] |
| ; CHECK-NEXT: br i1 [[TMP13]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP10:![0-9]+]] |
| ; CHECK: middle.block: |
| ; CHECK-NEXT: [[VECTOR_RECUR_EXTRACT:%.*]] = extractelement <4 x i16> [[WIDE_LOAD]], i32 3 |
| ; CHECK-NEXT: [[VECTOR_RECUR_EXTRACT_FOR_PHI:%.*]] = extractelement <4 x i16> [[WIDE_LOAD]], i32 2 |
| ; CHECK-NEXT: br label [[SCALAR_PH]] |
| ; CHECK: scalar.ph: |
| ; CHECK-NEXT: [[SCALAR_RECUR_INIT:%.*]] = phi i16 [ 0, [[ENTRY:%.*]] ], [ [[VECTOR_RECUR_EXTRACT]], [[MIDDLE_BLOCK]] ] |
| ; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i32 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY]] ] |
| ; CHECK-NEXT: br label [[FOR_COND:%.*]] |
| ; CHECK: for.cond: |
| ; CHECK-NEXT: [[I:%.*]] = phi i32 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[INC:%.*]], [[FOR_BODY:%.*]] ] |
| ; CHECK-NEXT: [[SCALAR_RECUR:%.*]] = phi i16 [ [[SCALAR_RECUR_INIT]], [[SCALAR_PH]] ], [ [[REC_NEXT:%.*]], [[FOR_BODY]] ] |
| ; CHECK-NEXT: [[IPROM:%.*]] = sext i32 [[I]] to i64 |
| ; CHECK-NEXT: [[B:%.*]] = getelementptr inbounds i16, i16* [[P]], i64 [[IPROM]] |
| ; CHECK-NEXT: [[REC_NEXT]] = load i16, i16* [[B]], align 2 |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[I]], [[N]] |
| ; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[IF_END:%.*]] |
| ; CHECK: for.body: |
| ; CHECK-NEXT: store i16 [[SCALAR_RECUR]], i16* [[B]], align 4 |
| ; CHECK-NEXT: [[INC]] = add nsw i32 [[I]], 1 |
| ; CHECK-NEXT: [[CMP2:%.*]] = icmp slt i32 [[I]], 2096 |
| ; CHECK-NEXT: br i1 [[CMP2]], label [[FOR_COND]], label [[IF_END]], !llvm.loop [[LOOP11:![0-9]+]] |
| ; CHECK: if.end: |
| ; CHECK-NEXT: [[REC_LCSSA:%.*]] = phi i16 [ [[SCALAR_RECUR]], [[FOR_COND]] ], [ 10, [[FOR_BODY]] ] |
| ; CHECK-NEXT: ret i16 [[REC_LCSSA]] |
| ; |
| entry: |
| br label %for.cond |
| |
| for.cond: |
| %i = phi i32 [ 0, %entry ], [ %inc, %for.body ] |
| %rec = phi i16 [0, %entry], [ %rec.next, %for.body ] |
| %iprom = sext i32 %i to i64 |
| %b = getelementptr inbounds i16, i16* %p, i64 %iprom |
| %rec.next = load i16, i16* %b |
| %cmp = icmp slt i32 %i, %n |
| br i1 %cmp, label %for.body, label %if.end |
| |
| for.body: |
| store i16 %rec , i16* %b, align 4 |
| %inc = add nsw i32 %i, 1 |
| %cmp2 = icmp slt i32 %i, 2096 |
| br i1 %cmp2, label %for.cond, label %if.end |
| |
| if.end: |
| %rec.lcssa = phi i16 [ %rec, %for.cond ], [ 10, %for.body ] |
| ret i16 %rec.lcssa |
| } |
| |
| ; A test where the instructions to sink may not be visited in dominance order. |
| define void @sink_dominance(i32* %ptr, i32 %N) { |
| ; CHECK-LABEL: @sink_dominance( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[UMAX1:%.*]] = call i32 @llvm.umax.i32(i32 [[N:%.*]], i32 1) |
| ; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i32 [[UMAX1]], 4 |
| ; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_SCEVCHECK:%.*]] |
| ; CHECK: vector.scevcheck: |
| ; CHECK-NEXT: [[UMAX:%.*]] = call i32 @llvm.umax.i32(i32 [[N]], i32 1) |
| ; CHECK-NEXT: [[TMP0:%.*]] = add i32 [[UMAX]], -1 |
| ; CHECK-NEXT: [[TMP1:%.*]] = add i32 0, [[TMP0]] |
| ; CHECK-NEXT: [[TMP2:%.*]] = sub i32 0, [[TMP0]] |
| ; CHECK-NEXT: [[TMP3:%.*]] = icmp sgt i32 [[TMP2]], 0 |
| ; CHECK-NEXT: [[TMP4:%.*]] = icmp slt i32 [[TMP1]], 0 |
| ; CHECK-NEXT: [[TMP5:%.*]] = select i1 false, i1 [[TMP3]], i1 [[TMP4]] |
| ; CHECK-NEXT: [[TMP6:%.*]] = or i1 false, [[TMP5]] |
| ; CHECK-NEXT: br i1 [[TMP6]], label [[SCALAR_PH]], label [[VECTOR_PH:%.*]] |
| ; CHECK: vector.ph: |
| ; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i32 [[UMAX1]], 4 |
| ; CHECK-NEXT: [[N_VEC:%.*]] = sub i32 [[UMAX1]], [[N_MOD_VF]] |
| ; CHECK-NEXT: br label [[VECTOR_BODY:%.*]] |
| ; CHECK: vector.body: |
| ; CHECK-NEXT: [[INDEX:%.*]] = phi i32 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[VECTOR_RECUR:%.*]] = phi <4 x i64> [ <i64 poison, i64 poison, i64 poison, i64 0>, [[VECTOR_PH]] ], [ [[TMP11:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[TMP7:%.*]] = add i32 [[INDEX]], 0 |
| ; CHECK-NEXT: [[TMP8:%.*]] = getelementptr inbounds i32, i32* [[PTR:%.*]], i32 [[TMP7]] |
| ; CHECK-NEXT: [[TMP9:%.*]] = getelementptr inbounds i32, i32* [[TMP8]], i32 0 |
| ; CHECK-NEXT: [[TMP10:%.*]] = bitcast i32* [[TMP9]] to <4 x i32>* |
| ; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <4 x i32>, <4 x i32>* [[TMP10]], align 4 |
| ; CHECK-NEXT: [[TMP11]] = zext <4 x i32> [[WIDE_LOAD]] to <4 x i64> |
| ; CHECK-NEXT: [[TMP12:%.*]] = shufflevector <4 x i64> [[VECTOR_RECUR]], <4 x i64> [[TMP11]], <4 x i32> <i32 3, i32 4, i32 5, i32 6> |
| ; CHECK-NEXT: [[TMP13:%.*]] = trunc <4 x i64> [[TMP12]] to <4 x i32> |
| ; CHECK-NEXT: [[TMP14:%.*]] = icmp slt <4 x i32> [[TMP13]], <i32 213, i32 213, i32 213, i32 213> |
| ; CHECK-NEXT: [[TMP15:%.*]] = select <4 x i1> [[TMP14]], <4 x i32> [[TMP13]], <4 x i32> <i32 22, i32 22, i32 22, i32 22> |
| ; CHECK-NEXT: [[TMP16:%.*]] = bitcast i32* [[TMP9]] to <4 x i32>* |
| ; CHECK-NEXT: store <4 x i32> [[TMP15]], <4 x i32>* [[TMP16]], align 4 |
| ; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i32 [[INDEX]], 4 |
| ; CHECK-NEXT: [[TMP17:%.*]] = icmp eq i32 [[INDEX_NEXT]], [[N_VEC]] |
| ; CHECK-NEXT: br i1 [[TMP17]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP12:![0-9]+]] |
| ; CHECK: middle.block: |
| ; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i32 [[UMAX1]], [[N_VEC]] |
| ; CHECK-NEXT: [[VECTOR_RECUR_EXTRACT:%.*]] = extractelement <4 x i64> [[TMP11]], i32 3 |
| ; CHECK-NEXT: [[VECTOR_RECUR_EXTRACT_FOR_PHI:%.*]] = extractelement <4 x i64> [[TMP11]], i32 2 |
| ; CHECK-NEXT: br i1 [[CMP_N]], label [[EXIT:%.*]], label [[SCALAR_PH]] |
| ; CHECK: scalar.ph: |
| ; CHECK-NEXT: [[SCALAR_RECUR_INIT:%.*]] = phi i64 [ 0, [[VECTOR_SCEVCHECK]] ], [ 0, [[ENTRY:%.*]] ], [ [[VECTOR_RECUR_EXTRACT]], [[MIDDLE_BLOCK]] ] |
| ; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i32 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY]] ], [ 0, [[VECTOR_SCEVCHECK]] ] |
| ; CHECK-NEXT: br label [[LOOP:%.*]] |
| ; CHECK: loop: |
| ; CHECK-NEXT: [[SCALAR_RECUR:%.*]] = phi i64 [ [[SCALAR_RECUR_INIT]], [[SCALAR_PH]] ], [ [[FOR_NEXT:%.*]], [[LOOP]] ] |
| ; CHECK-NEXT: [[IV:%.*]] = phi i32 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ] |
| ; CHECK-NEXT: [[FOR_TRUNC:%.*]] = trunc i64 [[SCALAR_RECUR]] to i32 |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[FOR_TRUNC]], 213 |
| ; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[CMP]], i32 [[FOR_TRUNC]], i32 22 |
| ; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds i32, i32* [[PTR]], i32 [[IV]] |
| ; CHECK-NEXT: [[LV:%.*]] = load i32, i32* [[GEP]], align 4 |
| ; CHECK-NEXT: [[FOR_NEXT]] = zext i32 [[LV]] to i64 |
| ; CHECK-NEXT: store i32 [[SELECT]], i32* [[GEP]], align 4 |
| ; CHECK-NEXT: [[IV_NEXT]] = add i32 [[IV]], 1 |
| ; CHECK-NEXT: [[CMP73:%.*]] = icmp ugt i32 [[N]], [[IV_NEXT]] |
| ; CHECK-NEXT: br i1 [[CMP73]], label [[LOOP]], label [[EXIT]], !llvm.loop [[LOOP13:![0-9]+]] |
| ; CHECK: exit: |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| br label %loop |
| |
| loop: |
| %for = phi i64 [ 0, %entry ], [ %for.next, %loop ] |
| %iv = phi i32 [ 0, %entry ], [ %iv.next, %loop ] |
| |
| %for.trunc = trunc i64 %for to i32 |
| %cmp = icmp slt i32 %for.trunc, 213 |
| %select = select i1 %cmp, i32 %for.trunc, i32 22 |
| |
| %gep = getelementptr inbounds i32, i32* %ptr, i32 %iv |
| %lv = load i32, i32* %gep, align 4 |
| %for.next = zext i32 %lv to i64 |
| store i32 %select, i32* %gep |
| |
| %iv.next = add i32 %iv, 1 |
| %cmp73 = icmp ugt i32 %N, %iv.next |
| br i1 %cmp73, label %loop, label %exit |
| |
| exit: |
| ret void |
| } |
| |
| ; Similar to @sink_dominance, but with 2 separate chains that merge at %select |
| ; with a different number of instructions in between. |
| define void @sink_dominance_2(i32* %ptr, i32 %N) { |
| ; CHECK-LABEL: @sink_dominance_2( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[UMAX1:%.*]] = call i32 @llvm.umax.i32(i32 [[N:%.*]], i32 1) |
| ; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i32 [[UMAX1]], 4 |
| ; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_SCEVCHECK:%.*]] |
| ; CHECK: vector.scevcheck: |
| ; CHECK-NEXT: [[UMAX:%.*]] = call i32 @llvm.umax.i32(i32 [[N]], i32 1) |
| ; CHECK-NEXT: [[TMP0:%.*]] = add i32 [[UMAX]], -1 |
| ; CHECK-NEXT: [[TMP1:%.*]] = add i32 0, [[TMP0]] |
| ; CHECK-NEXT: [[TMP2:%.*]] = sub i32 0, [[TMP0]] |
| ; CHECK-NEXT: [[TMP3:%.*]] = icmp sgt i32 [[TMP2]], 0 |
| ; CHECK-NEXT: [[TMP4:%.*]] = icmp slt i32 [[TMP1]], 0 |
| ; CHECK-NEXT: [[TMP5:%.*]] = select i1 false, i1 [[TMP3]], i1 [[TMP4]] |
| ; CHECK-NEXT: [[TMP6:%.*]] = or i1 false, [[TMP5]] |
| ; CHECK-NEXT: br i1 [[TMP6]], label [[SCALAR_PH]], label [[VECTOR_PH:%.*]] |
| ; CHECK: vector.ph: |
| ; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i32 [[UMAX1]], 4 |
| ; CHECK-NEXT: [[N_VEC:%.*]] = sub i32 [[UMAX1]], [[N_MOD_VF]] |
| ; CHECK-NEXT: br label [[VECTOR_BODY:%.*]] |
| ; CHECK: vector.body: |
| ; CHECK-NEXT: [[INDEX:%.*]] = phi i32 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[VECTOR_RECUR:%.*]] = phi <4 x i64> [ <i64 poison, i64 poison, i64 poison, i64 0>, [[VECTOR_PH]] ], [ [[TMP11:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[TMP7:%.*]] = add i32 [[INDEX]], 0 |
| ; CHECK-NEXT: [[TMP8:%.*]] = getelementptr inbounds i32, i32* [[PTR:%.*]], i32 [[TMP7]] |
| ; CHECK-NEXT: [[TMP9:%.*]] = getelementptr inbounds i32, i32* [[TMP8]], i32 0 |
| ; CHECK-NEXT: [[TMP10:%.*]] = bitcast i32* [[TMP9]] to <4 x i32>* |
| ; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <4 x i32>, <4 x i32>* [[TMP10]], align 4 |
| ; CHECK-NEXT: [[TMP11]] = zext <4 x i32> [[WIDE_LOAD]] to <4 x i64> |
| ; CHECK-NEXT: [[TMP12:%.*]] = shufflevector <4 x i64> [[VECTOR_RECUR]], <4 x i64> [[TMP11]], <4 x i32> <i32 3, i32 4, i32 5, i32 6> |
| ; CHECK-NEXT: [[TMP13:%.*]] = trunc <4 x i64> [[TMP12]] to <4 x i32> |
| ; CHECK-NEXT: [[TMP14:%.*]] = add <4 x i32> [[TMP13]], <i32 2, i32 2, i32 2, i32 2> |
| ; CHECK-NEXT: [[TMP15:%.*]] = mul <4 x i32> [[TMP14]], <i32 99, i32 99, i32 99, i32 99> |
| ; CHECK-NEXT: [[TMP16:%.*]] = icmp slt <4 x i32> [[TMP13]], <i32 213, i32 213, i32 213, i32 213> |
| ; CHECK-NEXT: [[TMP17:%.*]] = select <4 x i1> [[TMP16]], <4 x i32> [[TMP13]], <4 x i32> [[TMP15]] |
| ; CHECK-NEXT: [[TMP18:%.*]] = bitcast i32* [[TMP9]] to <4 x i32>* |
| ; CHECK-NEXT: store <4 x i32> [[TMP17]], <4 x i32>* [[TMP18]], align 4 |
| ; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i32 [[INDEX]], 4 |
| ; CHECK-NEXT: [[TMP19:%.*]] = icmp eq i32 [[INDEX_NEXT]], [[N_VEC]] |
| ; CHECK-NEXT: br i1 [[TMP19]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP14:![0-9]+]] |
| ; CHECK: middle.block: |
| ; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i32 [[UMAX1]], [[N_VEC]] |
| ; CHECK-NEXT: [[VECTOR_RECUR_EXTRACT:%.*]] = extractelement <4 x i64> [[TMP11]], i32 3 |
| ; CHECK-NEXT: [[VECTOR_RECUR_EXTRACT_FOR_PHI:%.*]] = extractelement <4 x i64> [[TMP11]], i32 2 |
| ; CHECK-NEXT: br i1 [[CMP_N]], label [[EXIT:%.*]], label [[SCALAR_PH]] |
| ; CHECK: scalar.ph: |
| ; CHECK-NEXT: [[SCALAR_RECUR_INIT:%.*]] = phi i64 [ 0, [[VECTOR_SCEVCHECK]] ], [ 0, [[ENTRY:%.*]] ], [ [[VECTOR_RECUR_EXTRACT]], [[MIDDLE_BLOCK]] ] |
| ; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i32 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY]] ], [ 0, [[VECTOR_SCEVCHECK]] ] |
| ; CHECK-NEXT: br label [[LOOP:%.*]] |
| ; CHECK: loop: |
| ; CHECK-NEXT: [[SCALAR_RECUR:%.*]] = phi i64 [ [[SCALAR_RECUR_INIT]], [[SCALAR_PH]] ], [ [[FOR_NEXT:%.*]], [[LOOP]] ] |
| ; CHECK-NEXT: [[IV:%.*]] = phi i32 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ] |
| ; CHECK-NEXT: [[FOR_TRUNC:%.*]] = trunc i64 [[SCALAR_RECUR]] to i32 |
| ; CHECK-NEXT: [[STEP:%.*]] = add i32 [[FOR_TRUNC]], 2 |
| ; CHECK-NEXT: [[STEP_2:%.*]] = mul i32 [[STEP]], 99 |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[FOR_TRUNC]], 213 |
| ; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[CMP]], i32 [[FOR_TRUNC]], i32 [[STEP_2]] |
| ; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds i32, i32* [[PTR]], i32 [[IV]] |
| ; CHECK-NEXT: [[LV:%.*]] = load i32, i32* [[GEP]], align 4 |
| ; CHECK-NEXT: [[FOR_NEXT]] = zext i32 [[LV]] to i64 |
| ; CHECK-NEXT: store i32 [[SELECT]], i32* [[GEP]], align 4 |
| ; CHECK-NEXT: [[IV_NEXT]] = add i32 [[IV]], 1 |
| ; CHECK-NEXT: [[CMP73:%.*]] = icmp ugt i32 [[N]], [[IV_NEXT]] |
| ; CHECK-NEXT: br i1 [[CMP73]], label [[LOOP]], label [[EXIT]], !llvm.loop [[LOOP15:![0-9]+]] |
| ; CHECK: exit: |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| br label %loop |
| |
| loop: |
| %for = phi i64 [ 0, %entry ], [ %for.next, %loop ] |
| %iv = phi i32 [ 0, %entry ], [ %iv.next, %loop ] |
| |
| %for.trunc = trunc i64 %for to i32 |
| %step = add i32 %for.trunc, 2 |
| %step.2 = mul i32 %step, 99 |
| |
| %cmp = icmp slt i32 %for.trunc, 213 |
| %select = select i1 %cmp, i32 %for.trunc, i32 %step.2 |
| |
| %gep = getelementptr inbounds i32, i32* %ptr, i32 %iv |
| %lv = load i32, i32* %gep, align 4 |
| %for.next = zext i32 %lv to i64 |
| store i32 %select, i32* %gep |
| |
| %iv.next = add i32 %iv, 1 |
| %cmp73 = icmp ugt i32 %N, %iv.next |
| br i1 %cmp73, label %loop, label %exit |
| |
| exit: |
| ret void |
| } |
| |
| define void @cannot_sink_load_past_store(i32* %ptr, i32 %N) { |
| ; CHECK-LABEL: @cannot_sink_load_past_store( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: br label [[LOOP:%.*]] |
| ; CHECK: loop: |
| ; CHECK-NEXT: [[FOR:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[FOR_NEXT:%.*]], [[LOOP]] ] |
| ; CHECK-NEXT: [[IV:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ] |
| ; CHECK-NEXT: [[GEP_FOR:%.*]] = getelementptr inbounds i32, i32* [[PTR:%.*]], i64 [[FOR]] |
| ; CHECK-NEXT: [[LV_FOR:%.*]] = load i32, i32* [[GEP_FOR]], align 4 |
| ; CHECK-NEXT: [[FOR_TRUNC:%.*]] = trunc i64 [[FOR]] to i32 |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[LV_FOR]], [[FOR_TRUNC]] |
| ; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[CMP]], i32 [[LV_FOR]], i32 22 |
| ; CHECK-NEXT: [[GEP_IV:%.*]] = getelementptr inbounds i32, i32* [[PTR]], i32 [[IV]] |
| ; CHECK-NEXT: store i32 0, i32* [[GEP_IV]], align 4 |
| ; CHECK-NEXT: [[IV_NEXT]] = add i32 [[IV]], 1 |
| ; CHECK-NEXT: [[FOR_NEXT]] = zext i32 [[IV]] to i64 |
| ; CHECK-NEXT: [[CMP73:%.*]] = icmp ugt i32 [[N:%.*]], [[IV_NEXT]] |
| ; CHECK-NEXT: br i1 [[CMP73]], label [[LOOP]], label [[EXIT:%.*]] |
| ; CHECK: exit: |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| br label %loop |
| |
| loop: |
| %for = phi i64 [ 0, %entry ], [ %for.next, %loop ] |
| %iv = phi i32 [ 0, %entry ], [ %iv.next, %loop ] |
| |
| %gep.for = getelementptr inbounds i32, i32* %ptr, i64 %for |
| %lv.for = load i32, i32* %gep.for, align 4 |
| %for.trunc = trunc i64 %for to i32 |
| %cmp = icmp slt i32 %lv.for, %for.trunc |
| %select = select i1 %cmp, i32 %lv.for, i32 22 |
| |
| %gep.iv = getelementptr inbounds i32, i32* %ptr, i32 %iv |
| store i32 0, i32* %gep.iv |
| %iv.next = add i32 %iv, 1 |
| %for.next = zext i32 %iv to i64 |
| |
| %cmp73 = icmp ugt i32 %N, %iv.next |
| br i1 %cmp73, label %loop, label %exit |
| |
| exit: |
| ret void |
| } |
