forked from OSchip/llvm-project
99 lines
4.7 KiB
LLVM
99 lines
4.7 KiB
LLVM
; RUN: opt -S -loop-vectorize -force-vector-width=4 -force-vector-interleave=1 < %s | FileCheck %s
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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; PR39417
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; Check that the need for overflow check prevents vectorizing a loop with tiny
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; trip count (which implies opt for size).
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; CHECK-LABEL: @func_34
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; CHECK-NOT: vector.scevcheck
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; CHECK-NOT: vector.body:
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; CHECK-LABEL: bb67:
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define void @func_34() {
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bb1:
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br label %bb67
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bb67:
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%storemerge2 = phi i32 [ 0, %bb1 ], [ %_tmp2300, %bb67 ]
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%sext = shl i32 %storemerge2, 16
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%_tmp2299 = ashr exact i32 %sext, 16
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%_tmp2300 = add nsw i32 %_tmp2299, 1
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%_tmp2310 = trunc i32 %_tmp2300 to i16
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%_tmp2312 = icmp slt i16 %_tmp2310, 3
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br i1 %_tmp2312, label %bb67, label %bb68
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bb68:
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ret void
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}
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; Check that a loop under opt-for-size is vectorized, w/o checking for
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; stride==1.
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; NOTE: Some assertions have been autogenerated by utils/update_test_checks.py
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define void @scev4stride1(i32* noalias nocapture %a, i32* noalias nocapture readonly %b, i32 %k) #0 {
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; CHECK-LABEL: @scev4stride1(
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; CHECK-NEXT: for.body.preheader:
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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> undef, i32 [[K:%.*]], i32 0
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; CHECK-NEXT: [[BROADCAST_SPLAT:%.*]] = shufflevector <4 x i32> [[BROADCAST_SPLATINSERT]], <4 x i32> undef, <4 x i32> zeroinitializer
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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 i32 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
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; CHECK-NEXT: [[VEC_IND:%.*]] = phi <4 x i32> [ <i32 0, i32 1, i32 2, i32 3>, [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[VECTOR_BODY]] ]
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; CHECK-NEXT: [[TMP0:%.*]] = add i32 [[INDEX]], 0
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; CHECK-NEXT: [[TMP1:%.*]] = add i32 [[INDEX]], 1
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; CHECK-NEXT: [[TMP2:%.*]] = add i32 [[INDEX]], 2
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; CHECK-NEXT: [[TMP3:%.*]] = add i32 [[INDEX]], 3
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; CHECK-NEXT: [[TMP4:%.*]] = mul nsw <4 x i32> [[VEC_IND]], [[BROADCAST_SPLAT]]
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; CHECK-NEXT: [[TMP5:%.*]] = extractelement <4 x i32> [[TMP4]], i32 0
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; CHECK-NEXT: [[TMP6:%.*]] = getelementptr inbounds i32, i32* [[B:%.*]], i32 [[TMP5]]
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; CHECK-NEXT: [[TMP7:%.*]] = extractelement <4 x i32> [[TMP4]], i32 1
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; CHECK-NEXT: [[TMP8:%.*]] = getelementptr inbounds i32, i32* [[B]], i32 [[TMP7]]
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; CHECK-NEXT: [[TMP9:%.*]] = extractelement <4 x i32> [[TMP4]], i32 2
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; CHECK-NEXT: [[TMP10:%.*]] = getelementptr inbounds i32, i32* [[B]], i32 [[TMP9]]
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; CHECK-NEXT: [[TMP11:%.*]] = extractelement <4 x i32> [[TMP4]], i32 3
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; CHECK-NEXT: [[TMP12:%.*]] = getelementptr inbounds i32, i32* [[B]], i32 [[TMP11]]
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; CHECK-NEXT: [[TMP13:%.*]] = load i32, i32* [[TMP6]], align 4
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; CHECK-NEXT: [[TMP14:%.*]] = load i32, i32* [[TMP8]], align 4
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; CHECK-NEXT: [[TMP15:%.*]] = load i32, i32* [[TMP10]], align 4
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; CHECK-NEXT: [[TMP16:%.*]] = load i32, i32* [[TMP12]], align 4
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; CHECK-NEXT: [[TMP17:%.*]] = insertelement <4 x i32> undef, i32 [[TMP13]], i32 0
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; CHECK-NEXT: [[TMP18:%.*]] = insertelement <4 x i32> [[TMP17]], i32 [[TMP14]], i32 1
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; CHECK-NEXT: [[TMP19:%.*]] = insertelement <4 x i32> [[TMP18]], i32 [[TMP15]], i32 2
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; CHECK-NEXT: [[TMP20:%.*]] = insertelement <4 x i32> [[TMP19]], i32 [[TMP16]], i32 3
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; CHECK-NEXT: [[TMP21:%.*]] = getelementptr inbounds i32, i32* [[A:%.*]], i32 [[TMP0]]
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; CHECK-NEXT: [[TMP22:%.*]] = getelementptr inbounds i32, i32* [[TMP21]], i32 0
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; CHECK-NEXT: [[TMP23:%.*]] = bitcast i32* [[TMP22]] to <4 x i32>*
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; CHECK-NEXT: store <4 x i32> [[TMP20]], <4 x i32>* [[TMP23]], align 4
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; CHECK-NEXT: [[INDEX_NEXT]] = add i32 [[INDEX]], 4
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; CHECK-NEXT: [[VEC_IND_NEXT]] = add <4 x i32> [[VEC_IND]], <i32 4, i32 4, i32 4, i32 4>
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; CHECK-NEXT: [[TMP24:%.*]] = icmp eq i32 [[INDEX_NEXT]], 1024
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; CHECK-NEXT: br i1 [[TMP24]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop !0
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; CHECK: middle.block:
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; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i32 1024, 1024
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; CHECK-NEXT: br i1 [[CMP_N]], label [[FOR_END_LOOPEXIT:%.*]], label [[SCALAR_PH]]
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; CHECK: scalar.ph:
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; CHECK: for.body:
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; CHECK: for.end.loopexit:
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; CHECK-NEXT: ret void
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;
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for.body.preheader:
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br label %for.body
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for.body:
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%i.07 = phi i32 [ %inc, %for.body ], [ 0, %for.body.preheader ]
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%mul = mul nsw i32 %i.07, %k
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%arrayidx = getelementptr inbounds i32, i32* %b, i32 %mul
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%0 = load i32, i32* %arrayidx, align 4
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%arrayidx1 = getelementptr inbounds i32, i32* %a, i32 %i.07
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store i32 %0, i32* %arrayidx1, align 4
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%inc = add nuw nsw i32 %i.07, 1
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%exitcond = icmp eq i32 %inc, 1024
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br i1 %exitcond, label %for.end.loopexit, label %for.body
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for.end.loopexit:
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ret void
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}
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attributes #0 = { optsize }
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