608 lines
30 KiB
LLVM
608 lines
30 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -loop-vectorize -force-vector-width=4 -force-vector-interleave=1 -S %s | FileCheck %s
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@p = external local_unnamed_addr global [257 x i32], align 16
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@q = external local_unnamed_addr global [257 x i32], align 16
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; Test case for PR43398.
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define void @can_sink_after_store(i32 %x, i32* %ptr, i64 %tc) local_unnamed_addr #0 {
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; CHECK-LABEL: @can_sink_after_store(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[PREHEADER:%.*]]
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; CHECK: preheader:
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; CHECK-NEXT: [[IDX_PHI_TRANS:%.*]] = getelementptr inbounds [257 x i32], [257 x i32]* @p, i64 0, i64 1
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; CHECK-NEXT: [[DOTPRE:%.*]] = load i32, i32* [[IDX_PHI_TRANS]], align 4
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; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
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; CHECK: vector.ph:
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; CHECK-NEXT: [[BROADCAST_SPLATINSERT:%.*]] = insertelement <4 x i32> poison, i32 [[X:%.*]], i32 0
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; CHECK-NEXT: [[BROADCAST_SPLAT:%.*]] = shufflevector <4 x i32> [[BROADCAST_SPLATINSERT]], <4 x i32> poison, <4 x i32> zeroinitializer
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; CHECK-NEXT: [[VECTOR_RECUR_INIT:%.*]] = insertelement <4 x i32> poison, i32 [[DOTPRE]], i32 3
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; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
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; CHECK: vector.body:
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; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
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; CHECK-NEXT: [[VECTOR_RECUR:%.*]] = phi <4 x i32> [ [[VECTOR_RECUR_INIT]], [[VECTOR_PH]] ], [ [[WIDE_LOAD:%.*]], [[VECTOR_BODY]] ]
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; CHECK-NEXT: [[OFFSET_IDX:%.*]] = add i64 1, [[INDEX]]
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; CHECK-NEXT: [[TMP0:%.*]] = add i64 [[OFFSET_IDX]], 0
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; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds [257 x i32], [257 x i32]* @p, i64 0, i64 [[TMP0]]
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; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds i32, i32* [[TMP1]], i32 0
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; CHECK-NEXT: [[TMP3:%.*]] = bitcast i32* [[TMP2]] to <4 x i32>*
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; CHECK-NEXT: [[WIDE_LOAD]] = load <4 x i32>, <4 x i32>* [[TMP3]], align 4
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; 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>
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; CHECK-NEXT: [[TMP5:%.*]] = add <4 x i32> [[TMP4]], [[BROADCAST_SPLAT]]
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; CHECK-NEXT: [[TMP6:%.*]] = add <4 x i32> [[TMP5]], [[WIDE_LOAD]]
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; CHECK-NEXT: [[TMP7:%.*]] = getelementptr inbounds [257 x i32], [257 x i32]* @q, i64 0, i64 [[TMP0]]
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; CHECK-NEXT: [[TMP8:%.*]] = getelementptr inbounds i32, i32* [[TMP7]], i32 0
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; CHECK-NEXT: [[TMP9:%.*]] = bitcast i32* [[TMP8]] to <4 x i32>*
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; CHECK-NEXT: store <4 x i32> [[TMP6]], <4 x i32>* [[TMP9]], align 4
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; CHECK-NEXT: [[INDEX_NEXT]] = add i64 [[INDEX]], 4
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; CHECK-NEXT: [[TMP10:%.*]] = icmp eq i64 [[INDEX_NEXT]], 1996
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; CHECK-NEXT: br i1 [[TMP10]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP0:!llvm.loop !.*]]
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; CHECK: middle.block:
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; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 1999, 1996
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; CHECK-NEXT: [[VECTOR_RECUR_EXTRACT:%.*]] = extractelement <4 x i32> [[WIDE_LOAD]], i32 3
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; CHECK-NEXT: [[VECTOR_RECUR_EXTRACT_FOR_PHI:%.*]] = extractelement <4 x i32> [[WIDE_LOAD]], i32 2
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; CHECK-NEXT: br i1 [[CMP_N]], label [[EXIT:%.*]], label [[SCALAR_PH]]
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; CHECK: scalar.ph:
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; CHECK-NEXT: [[SCALAR_RECUR_INIT:%.*]] = phi i32 [ [[DOTPRE]], [[PREHEADER]] ], [ [[VECTOR_RECUR_EXTRACT]], [[MIDDLE_BLOCK]] ]
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; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 1997, [[MIDDLE_BLOCK]] ], [ 1, [[PREHEADER]] ]
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; CHECK-NEXT: br label [[FOR:%.*]]
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; CHECK: for:
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; CHECK-NEXT: [[SCALAR_RECUR:%.*]] = phi i32 [ [[SCALAR_RECUR_INIT]], [[SCALAR_PH]] ], [ [[PRE_NEXT:%.*]], [[FOR]] ]
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; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[FOR]] ]
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; CHECK-NEXT: [[ADD_1:%.*]] = add i32 [[SCALAR_RECUR]], [[X]]
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; CHECK-NEXT: [[IDX_1:%.*]] = getelementptr inbounds [257 x i32], [257 x i32]* @p, i64 0, i64 [[IV]]
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; CHECK-NEXT: [[PRE_NEXT]] = load i32, i32* [[IDX_1]], align 4
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; CHECK-NEXT: [[ADD_2:%.*]] = add i32 [[ADD_1]], [[PRE_NEXT]]
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; CHECK-NEXT: [[IDX_2:%.*]] = getelementptr inbounds [257 x i32], [257 x i32]* @q, i64 0, i64 [[IV]]
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; CHECK-NEXT: store i32 [[ADD_2]], i32* [[IDX_2]], align 4
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; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
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; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[IV_NEXT]], 2000
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; CHECK-NEXT: br i1 [[EXITCOND]], label [[EXIT]], label [[FOR]], [[LOOP2:!llvm.loop !.*]]
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; CHECK: exit:
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; CHECK-NEXT: ret void
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;
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entry:
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br label %preheader
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preheader:
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%idx.phi.trans = getelementptr inbounds [257 x i32], [257 x i32]* @p, i64 0, i64 1
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%.pre = load i32, i32* %idx.phi.trans, align 4
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br label %for
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for:
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%pre.phi = phi i32 [ %.pre, %preheader ], [ %pre.next, %for ]
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%iv = phi i64 [ 1, %preheader ], [ %iv.next, %for ]
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%add.1 = add i32 %pre.phi, %x
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%idx.1 = getelementptr inbounds [257 x i32], [257 x i32]* @p, i64 0, i64 %iv
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%pre.next = load i32, i32* %idx.1, align 4
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%add.2 = add i32 %add.1, %pre.next
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%idx.2 = getelementptr inbounds [257 x i32], [257 x i32]* @q, i64 0, i64 %iv
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store i32 %add.2, i32* %idx.2, align 4
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%iv.next = add nuw nsw i64 %iv, 1
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%exitcond = icmp eq i64 %iv.next, 2000
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br i1 %exitcond, label %exit, label %for
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exit:
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ret void
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}
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; We can sink potential trapping instructions, as this will only delay the trap
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; and not introduce traps on additional paths.
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define void @sink_sdiv(i32 %x, i32* %ptr, i64 %tc) local_unnamed_addr #0 {
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; CHECK-LABEL: @sink_sdiv(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[PREHEADER:%.*]]
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; CHECK: preheader:
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; CHECK-NEXT: [[IDX_PHI_TRANS:%.*]] = getelementptr inbounds [257 x i32], [257 x i32]* @p, i64 0, i64 1
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; CHECK-NEXT: [[DOTPRE:%.*]] = load i32, i32* [[IDX_PHI_TRANS]], align 4
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; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
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; CHECK: vector.ph:
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; CHECK-NEXT: [[BROADCAST_SPLATINSERT:%.*]] = insertelement <4 x i32> poison, i32 [[X:%.*]], i32 0
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; CHECK-NEXT: [[BROADCAST_SPLAT:%.*]] = shufflevector <4 x i32> [[BROADCAST_SPLATINSERT]], <4 x i32> poison, <4 x i32> zeroinitializer
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; CHECK-NEXT: [[VECTOR_RECUR_INIT:%.*]] = insertelement <4 x i32> poison, i32 [[DOTPRE]], i32 3
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; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
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; CHECK: vector.body:
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; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
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; CHECK-NEXT: [[VECTOR_RECUR:%.*]] = phi <4 x i32> [ [[VECTOR_RECUR_INIT]], [[VECTOR_PH]] ], [ [[WIDE_LOAD:%.*]], [[VECTOR_BODY]] ]
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; CHECK-NEXT: [[OFFSET_IDX:%.*]] = add i64 1, [[INDEX]]
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; CHECK-NEXT: [[TMP0:%.*]] = add i64 [[OFFSET_IDX]], 0
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; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds [257 x i32], [257 x i32]* @p, i64 0, i64 [[TMP0]]
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; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds i32, i32* [[TMP1]], i32 0
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; CHECK-NEXT: [[TMP3:%.*]] = bitcast i32* [[TMP2]] to <4 x i32>*
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; CHECK-NEXT: [[WIDE_LOAD]] = load <4 x i32>, <4 x i32>* [[TMP3]], align 4
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; 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>
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; CHECK-NEXT: [[TMP5:%.*]] = sdiv <4 x i32> [[TMP4]], [[BROADCAST_SPLAT]]
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; CHECK-NEXT: [[TMP6:%.*]] = add <4 x i32> [[TMP5]], [[WIDE_LOAD]]
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; CHECK-NEXT: [[TMP7:%.*]] = getelementptr inbounds [257 x i32], [257 x i32]* @q, i64 0, i64 [[TMP0]]
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; CHECK-NEXT: [[TMP8:%.*]] = getelementptr inbounds i32, i32* [[TMP7]], i32 0
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; CHECK-NEXT: [[TMP9:%.*]] = bitcast i32* [[TMP8]] to <4 x i32>*
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; CHECK-NEXT: store <4 x i32> [[TMP6]], <4 x i32>* [[TMP9]], align 4
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; CHECK-NEXT: [[INDEX_NEXT]] = add i64 [[INDEX]], 4
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; CHECK-NEXT: [[TMP10:%.*]] = icmp eq i64 [[INDEX_NEXT]], 1996
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; CHECK-NEXT: br i1 [[TMP10]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP4:!llvm.loop !.*]]
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; CHECK: middle.block:
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; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 1999, 1996
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; CHECK-NEXT: [[VECTOR_RECUR_EXTRACT:%.*]] = extractelement <4 x i32> [[WIDE_LOAD]], i32 3
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; CHECK-NEXT: [[VECTOR_RECUR_EXTRACT_FOR_PHI:%.*]] = extractelement <4 x i32> [[WIDE_LOAD]], i32 2
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; CHECK-NEXT: br i1 [[CMP_N]], label [[EXIT:%.*]], label [[SCALAR_PH]]
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; CHECK: scalar.ph:
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; CHECK-NEXT: [[SCALAR_RECUR_INIT:%.*]] = phi i32 [ [[DOTPRE]], [[PREHEADER]] ], [ [[VECTOR_RECUR_EXTRACT]], [[MIDDLE_BLOCK]] ]
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; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 1997, [[MIDDLE_BLOCK]] ], [ 1, [[PREHEADER]] ]
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; CHECK-NEXT: br label [[FOR:%.*]]
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; CHECK: for:
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; CHECK-NEXT: [[SCALAR_RECUR:%.*]] = phi i32 [ [[SCALAR_RECUR_INIT]], [[SCALAR_PH]] ], [ [[PRE_NEXT:%.*]], [[FOR]] ]
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; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[FOR]] ]
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; CHECK-NEXT: [[DIV_1:%.*]] = sdiv i32 [[SCALAR_RECUR]], [[X]]
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; CHECK-NEXT: [[IDX_1:%.*]] = getelementptr inbounds [257 x i32], [257 x i32]* @p, i64 0, i64 [[IV]]
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; CHECK-NEXT: [[PRE_NEXT]] = load i32, i32* [[IDX_1]], align 4
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; CHECK-NEXT: [[ADD_2:%.*]] = add i32 [[DIV_1]], [[PRE_NEXT]]
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; CHECK-NEXT: [[IDX_2:%.*]] = getelementptr inbounds [257 x i32], [257 x i32]* @q, i64 0, i64 [[IV]]
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; CHECK-NEXT: store i32 [[ADD_2]], i32* [[IDX_2]], align 4
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; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
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; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[IV_NEXT]], 2000
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; CHECK-NEXT: br i1 [[EXITCOND]], label [[EXIT]], label [[FOR]], [[LOOP5:!llvm.loop !.*]]
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; CHECK: exit:
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; CHECK-NEXT: ret void
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;
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entry:
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br label %preheader
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preheader:
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%idx.phi.trans = getelementptr inbounds [257 x i32], [257 x i32]* @p, i64 0, i64 1
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%.pre = load i32, i32* %idx.phi.trans, align 4
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br label %for
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for:
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%pre.phi = phi i32 [ %.pre, %preheader ], [ %pre.next, %for ]
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%iv = phi i64 [ 1, %preheader ], [ %iv.next, %for ]
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%div.1 = sdiv i32 %pre.phi, %x
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%idx.1 = getelementptr inbounds [257 x i32], [257 x i32]* @p, i64 0, i64 %iv
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%pre.next = load i32, i32* %idx.1, align 4
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%add.2 = add i32 %div.1, %pre.next
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%idx.2 = getelementptr inbounds [257 x i32], [257 x i32]* @q, i64 0, i64 %iv
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store i32 %add.2, i32* %idx.2, align 4
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%iv.next = add nuw nsw i64 %iv, 1
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%exitcond = icmp eq i64 %iv.next, 2000
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br i1 %exitcond, label %exit, label %for
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exit:
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ret void
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}
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; FIXME: Currently we can only sink a single instruction. For the example below,
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; we also have to sink users.
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define void @cannot_sink_with_additional_user(i32 %x, i32* %ptr, i64 %tc) {
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; CHECK-LABEL: @cannot_sink_with_additional_user(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[PREHEADER:%.*]]
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; CHECK: preheader:
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; CHECK-NEXT: [[IDX_PHI_TRANS:%.*]] = getelementptr inbounds [257 x i32], [257 x i32]* @p, i64 0, i64 1
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; CHECK-NEXT: [[DOTPRE:%.*]] = load i32, i32* [[IDX_PHI_TRANS]], align 4
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; CHECK-NEXT: br label [[FOR:%.*]]
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; CHECK: for:
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; CHECK-NEXT: [[PRE_PHI:%.*]] = phi i32 [ [[DOTPRE]], [[PREHEADER]] ], [ [[PRE_NEXT:%.*]], [[FOR]] ]
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; CHECK-NEXT: [[IV:%.*]] = phi i64 [ 1, [[PREHEADER]] ], [ [[IV_NEXT:%.*]], [[FOR]] ]
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; CHECK-NEXT: [[ADD_1:%.*]] = add i32 [[PRE_PHI]], [[X:%.*]]
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; CHECK-NEXT: [[ADD_2:%.*]] = add i32 [[ADD_1]], [[X]]
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; CHECK-NEXT: [[IDX_1:%.*]] = getelementptr inbounds [257 x i32], [257 x i32]* @p, i64 0, i64 [[IV]]
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; CHECK-NEXT: [[PRE_NEXT]] = load i32, i32* [[IDX_1]], align 4
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; CHECK-NEXT: [[ADD_3:%.*]] = add i32 [[ADD_1]], [[PRE_NEXT]]
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; CHECK-NEXT: [[ADD_4:%.*]] = add i32 [[ADD_2]], [[ADD_3]]
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; CHECK-NEXT: [[IDX_2:%.*]] = getelementptr inbounds [257 x i32], [257 x i32]* @q, i64 0, i64 [[IV]]
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; CHECK-NEXT: store i32 [[ADD_4]], i32* [[IDX_2]], align 4
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; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
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; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[IV_NEXT]], 2000
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; CHECK-NEXT: br i1 [[EXITCOND]], label [[EXIT:%.*]], label [[FOR]]
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; CHECK: exit:
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; CHECK-NEXT: ret void
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;
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entry:
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br label %preheader
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preheader:
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%idx.phi.trans = getelementptr inbounds [257 x i32], [257 x i32]* @p, i64 0, i64 1
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%.pre = load i32, i32* %idx.phi.trans, align 4
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br label %for
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for:
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%pre.phi = phi i32 [ %.pre, %preheader ], [ %pre.next, %for ]
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%iv = phi i64 [ 1, %preheader ], [ %iv.next, %for ]
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%add.1 = add i32 %pre.phi, %x
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%add.2 = add i32 %add.1, %x
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%idx.1 = getelementptr inbounds [257 x i32], [257 x i32]* @p, i64 0, i64 %iv
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%pre.next = load i32, i32* %idx.1, align 4
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%add.3 = add i32 %add.1, %pre.next
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%add.4 = add i32 %add.2, %add.3
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%idx.2 = getelementptr inbounds [257 x i32], [257 x i32]* @q, i64 0, i64 %iv
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store i32 %add.4, i32* %idx.2, align 4
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%iv.next = add nuw nsw i64 %iv, 1
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%exitcond = icmp eq i64 %iv.next, 2000
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br i1 %exitcond, label %exit, label %for
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exit:
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ret void
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}
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; FIXME: We can sink a store, if we can guarantee that it does not alias any
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; loads/stores in between.
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define void @cannot_sink_store(i32 %x, i32* %ptr, i64 %tc) {
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; CHECK-LABEL: @cannot_sink_store(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[PREHEADER:%.*]]
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; CHECK: preheader:
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; CHECK-NEXT: [[IDX_PHI_TRANS:%.*]] = getelementptr inbounds [257 x i32], [257 x i32]* @p, i64 0, i64 1
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; CHECK-NEXT: [[DOTPRE:%.*]] = load i32, i32* [[IDX_PHI_TRANS]], align 4
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; CHECK-NEXT: br label [[FOR:%.*]]
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; CHECK: for:
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; CHECK-NEXT: [[PRE_PHI:%.*]] = phi i32 [ [[DOTPRE]], [[PREHEADER]] ], [ [[PRE_NEXT:%.*]], [[FOR]] ]
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; CHECK-NEXT: [[IV:%.*]] = phi i64 [ 1, [[PREHEADER]] ], [ [[IV_NEXT:%.*]], [[FOR]] ]
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; CHECK-NEXT: [[ADD_1:%.*]] = add i32 [[PRE_PHI]], [[X:%.*]]
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; CHECK-NEXT: store i32 [[ADD_1]], i32* [[PTR:%.*]], align 4
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; CHECK-NEXT: [[IDX_1:%.*]] = getelementptr inbounds [257 x i32], [257 x i32]* @p, i64 0, i64 [[IV]]
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; CHECK-NEXT: [[PRE_NEXT]] = load i32, i32* [[IDX_1]], align 4
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; CHECK-NEXT: [[ADD_2:%.*]] = add i32 [[ADD_1]], [[PRE_NEXT]]
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; CHECK-NEXT: [[IDX_2:%.*]] = getelementptr inbounds [257 x i32], [257 x i32]* @q, i64 0, i64 [[IV]]
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; CHECK-NEXT: store i32 [[ADD_2]], i32* [[IDX_2]], align 4
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; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
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; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[IV_NEXT]], 2000
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; CHECK-NEXT: br i1 [[EXITCOND]], label [[EXIT:%.*]], label [[FOR]]
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; CHECK: exit:
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; CHECK-NEXT: ret void
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;
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entry:
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br label %preheader
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preheader:
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%idx.phi.trans = getelementptr inbounds [257 x i32], [257 x i32]* @p, i64 0, i64 1
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%.pre = load i32, i32* %idx.phi.trans, align 4
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br label %for
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for:
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%pre.phi = phi i32 [ %.pre, %preheader ], [ %pre.next, %for ]
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%iv = phi i64 [ 1, %preheader ], [ %iv.next, %for ]
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%add.1 = add i32 %pre.phi, %x
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store i32 %add.1, i32* %ptr
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%idx.1 = getelementptr inbounds [257 x i32], [257 x i32]* @p, i64 0, i64 %iv
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%pre.next = load i32, i32* %idx.1, align 4
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%add.2 = add i32 %add.1, %pre.next
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%idx.2 = getelementptr inbounds [257 x i32], [257 x i32]* @q, i64 0, i64 %iv
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store i32 %add.2, i32* %idx.2, align 4
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%iv.next = add nuw nsw i64 %iv, 1
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%exitcond = icmp eq i64 %iv.next, 2000
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br i1 %exitcond, label %exit, label %for
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exit:
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ret void
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}
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; Some kinds of reductions are not detected by IVDescriptors. If we have a
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; cycle, we cannot sink it.
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define void @cannot_sink_reduction(i32 %x, i32* %ptr, i64 %tc) {
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; CHECK-LABEL: @cannot_sink_reduction(
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; 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
|
|
}
|
|
|
|
; Users that are phi nodes cannot be sunk.
|
|
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: ; preds = %if.end128, %for.cond108.preheader
|
|
%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: ; preds = %for.body114
|
|
br label %loop.latch
|
|
|
|
if.falsebb: ; preds = %for.body114
|
|
br label %loop.latch
|
|
|
|
loop.latch: ; preds = %if.then122, %for.body114.if.end128_crit_edge
|
|
%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: [[TMP0:%.*]] = icmp sgt i32 [[N:%.*]], 0
|
|
; CHECK-NEXT: [[SMAX:%.*]] = select i1 [[TMP0]], i32 [[N]], i32 0
|
|
; CHECK-NEXT: [[TMP1:%.*]] = icmp ult i32 [[SMAX]], 2096
|
|
; CHECK-NEXT: [[UMIN:%.*]] = select i1 [[TMP1]], i32 [[SMAX]], i32 2096
|
|
; CHECK-NEXT: [[TMP2:%.*]] = add nuw nsw i32 [[UMIN]], 1
|
|
; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ule i32 [[TMP2]], 4
|
|
; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
|
|
; CHECK: vector.ph:
|
|
; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i32 [[TMP2]], 4
|
|
; CHECK-NEXT: [[TMP3:%.*]] = icmp eq i32 [[N_MOD_VF]], 0
|
|
; CHECK-NEXT: [[TMP4:%.*]] = select i1 [[TMP3]], i32 4, i32 [[N_MOD_VF]]
|
|
; CHECK-NEXT: [[N_VEC:%.*]] = sub i32 [[TMP2]], [[TMP4]]
|
|
; 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: [[TMP5:%.*]] = add i32 [[INDEX]], 0
|
|
; CHECK-NEXT: [[TMP6:%.*]] = add i32 [[INDEX]], 1
|
|
; CHECK-NEXT: [[TMP7:%.*]] = add i32 [[INDEX]], 2
|
|
; CHECK-NEXT: [[TMP8:%.*]] = add i32 [[INDEX]], 3
|
|
; CHECK-NEXT: [[TMP9:%.*]] = sext i32 [[TMP5]] to i64
|
|
; CHECK-NEXT: [[TMP10:%.*]] = getelementptr inbounds i16, i16* [[P:%.*]], i64 [[TMP9]]
|
|
; CHECK-NEXT: [[TMP11:%.*]] = getelementptr inbounds i16, i16* [[TMP10]], i32 0
|
|
; CHECK-NEXT: [[TMP12:%.*]] = bitcast i16* [[TMP11]] to <4 x i16>*
|
|
; CHECK-NEXT: [[WIDE_LOAD]] = load <4 x i16>, <4 x i16>* [[TMP12]], align 2
|
|
; CHECK-NEXT: [[TMP13:%.*]] = shufflevector <4 x i16> [[VECTOR_RECUR]], <4 x i16> [[WIDE_LOAD]], <4 x i32> <i32 3, i32 4, i32 5, i32 6>
|
|
; CHECK-NEXT: [[TMP14:%.*]] = bitcast i16* [[TMP11]] to <4 x i16>*
|
|
; CHECK-NEXT: store <4 x i16> [[TMP13]], <4 x i16>* [[TMP14]], align 4
|
|
; CHECK-NEXT: [[INDEX_NEXT]] = add i32 [[INDEX]], 4
|
|
; CHECK-NEXT: [[VEC_IND_NEXT]] = add <4 x i32> [[VEC_IND]], <i32 4, i32 4, i32 4, i32 4>
|
|
; CHECK-NEXT: [[TMP15:%.*]] = icmp eq i32 [[INDEX_NEXT]], [[N_VEC]]
|
|
; CHECK-NEXT: br i1 [[TMP15]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP6:!llvm.loop !.*]]
|
|
; CHECK: middle.block:
|
|
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i32 [[TMP2]], [[N_VEC]]
|
|
; 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 i1 [[CMP_N]], label [[IF_END:%.*]], 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]], [[LOOP7:!llvm.loop !.*]]
|
|
; CHECK: if.end:
|
|
; CHECK-NEXT: [[REC_LCSSA:%.*]] = phi i16 [ [[SCALAR_RECUR]], [[FOR_BODY]] ], [ [[SCALAR_RECUR]], [[FOR_COND]] ], [ [[VECTOR_RECUR_EXTRACT_FOR_PHI]], [[MIDDLE_BLOCK]] ]
|
|
; 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: [[TMP0:%.*]] = icmp sgt i32 [[N:%.*]], 0
|
|
; CHECK-NEXT: [[SMAX:%.*]] = select i1 [[TMP0]], i32 [[N]], i32 0
|
|
; CHECK-NEXT: [[TMP1:%.*]] = icmp ult i32 [[SMAX]], 2096
|
|
; CHECK-NEXT: [[UMIN:%.*]] = select i1 [[TMP1]], i32 [[SMAX]], i32 2096
|
|
; CHECK-NEXT: [[TMP2:%.*]] = add nuw nsw i32 [[UMIN]], 1
|
|
; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ule i32 [[TMP2]], 4
|
|
; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
|
|
; CHECK: vector.ph:
|
|
; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i32 [[TMP2]], 4
|
|
; CHECK-NEXT: [[TMP3:%.*]] = icmp eq i32 [[N_MOD_VF]], 0
|
|
; CHECK-NEXT: [[TMP4:%.*]] = select i1 [[TMP3]], i32 4, i32 [[N_MOD_VF]]
|
|
; CHECK-NEXT: [[N_VEC:%.*]] = sub i32 [[TMP2]], [[TMP4]]
|
|
; 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: [[TMP5:%.*]] = add i32 [[INDEX]], 0
|
|
; CHECK-NEXT: [[TMP6:%.*]] = add i32 [[INDEX]], 1
|
|
; CHECK-NEXT: [[TMP7:%.*]] = add i32 [[INDEX]], 2
|
|
; CHECK-NEXT: [[TMP8:%.*]] = add i32 [[INDEX]], 3
|
|
; CHECK-NEXT: [[TMP9:%.*]] = sext i32 [[TMP5]] to i64
|
|
; CHECK-NEXT: [[TMP10:%.*]] = getelementptr inbounds i16, i16* [[P:%.*]], i64 [[TMP9]]
|
|
; CHECK-NEXT: [[TMP11:%.*]] = getelementptr inbounds i16, i16* [[TMP10]], i32 0
|
|
; CHECK-NEXT: [[TMP12:%.*]] = bitcast i16* [[TMP11]] to <4 x i16>*
|
|
; CHECK-NEXT: [[WIDE_LOAD]] = load <4 x i16>, <4 x i16>* [[TMP12]], align 2
|
|
; CHECK-NEXT: [[TMP13:%.*]] = shufflevector <4 x i16> [[VECTOR_RECUR]], <4 x i16> [[WIDE_LOAD]], <4 x i32> <i32 3, i32 4, i32 5, i32 6>
|
|
; CHECK-NEXT: [[TMP14:%.*]] = bitcast i16* [[TMP11]] to <4 x i16>*
|
|
; CHECK-NEXT: store <4 x i16> [[TMP13]], <4 x i16>* [[TMP14]], align 4
|
|
; CHECK-NEXT: [[INDEX_NEXT]] = add i32 [[INDEX]], 4
|
|
; CHECK-NEXT: [[VEC_IND_NEXT]] = add <4 x i32> [[VEC_IND]], <i32 4, i32 4, i32 4, i32 4>
|
|
; CHECK-NEXT: [[TMP15:%.*]] = icmp eq i32 [[INDEX_NEXT]], [[N_VEC]]
|
|
; CHECK-NEXT: br i1 [[TMP15]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP8:!llvm.loop !.*]]
|
|
; CHECK: middle.block:
|
|
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i32 [[TMP2]], [[N_VEC]]
|
|
; 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 i1 [[CMP_N]], label [[IF_END:%.*]], 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]], [[LOOP9:!llvm.loop !.*]]
|
|
; CHECK: if.end:
|
|
; CHECK-NEXT: [[REC_LCSSA:%.*]] = phi i16 [ [[SCALAR_RECUR]], [[FOR_COND]] ], [ 10, [[FOR_BODY]] ], [ [[VECTOR_RECUR_EXTRACT_FOR_PHI]], [[MIDDLE_BLOCK]] ]
|
|
; 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
|
|
}
|