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clang-p2996/llvm/test/Transforms/SLPVectorizer/X86/tiny-tree.ll
Alexey Bataev f3d2609af3 [SLP]Improve/fix subvectors in gather/buildvector nodes handling 
SLP vectorizer has an estimation for gather/buildvector nodes, which
contain some scalar loads. SLP vectorizer performs pretty similar (but
large in SLOCs) estimation, which not always correct. Instead, this
patch implements clustering analysis and actual node allocation with the
full analysis for the vectorized clustered scalars (not only loads, but
also some other instructions) with the correct cost estimation and
vector insert instructions. Improves overall vectorization quality and
simplifies analysis/estimations.

Reviewers: RKSimon

Reviewed By: RKSimon

Pull Request: https://github.com/llvm/llvm-project/pull/104144
2024-08-23 06:45:22 -07:00

298 lines
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LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=slp-vectorizer -S -mtriple=x86_64-apple-macosx10.8.0 -mcpu=corei7-avx | FileCheck %s
define void @tiny_tree_fully_vectorizable(ptr noalias nocapture %dst, ptr noalias nocapture readonly %src, i64 %count) #0 {
; CHECK-LABEL: @tiny_tree_fully_vectorizable(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[CMP12:%.*]] = icmp eq i64 [[COUNT:%.*]], 0
; CHECK-NEXT: br i1 [[CMP12]], label [[FOR_END:%.*]], label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[I_015:%.*]] = phi i64 [ [[INC:%.*]], [[FOR_BODY]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: [[DST_ADDR_014:%.*]] = phi ptr [ [[ADD_PTR4:%.*]], [[FOR_BODY]] ], [ [[DST:%.*]], [[ENTRY]] ]
; CHECK-NEXT: [[SRC_ADDR_013:%.*]] = phi ptr [ [[ADD_PTR:%.*]], [[FOR_BODY]] ], [ [[SRC:%.*]], [[ENTRY]] ]
; CHECK-NEXT: [[TMP0:%.*]] = load <2 x double>, ptr [[SRC_ADDR_013]], align 8
; CHECK-NEXT: store <2 x double> [[TMP0]], ptr [[DST_ADDR_014]], align 8
; CHECK-NEXT: [[ADD_PTR]] = getelementptr inbounds double, ptr [[SRC_ADDR_013]], i64 [[I_015]]
; CHECK-NEXT: [[ADD_PTR4]] = getelementptr inbounds double, ptr [[DST_ADDR_014]], i64 [[I_015]]
; CHECK-NEXT: [[INC]] = add i64 [[I_015]], 1
; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[INC]], [[COUNT]]
; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_END]], label [[FOR_BODY]]
; CHECK: for.end:
; CHECK-NEXT: ret void
;
entry:
%cmp12 = icmp eq i64 %count, 0
br i1 %cmp12, label %for.end, label %for.body
for.body: ; preds = %entry, %for.body
%i.015 = phi i64 [ %inc, %for.body ], [ 0, %entry ]
%dst.addr.014 = phi ptr [ %add.ptr4, %for.body ], [ %dst, %entry ]
%src.addr.013 = phi ptr [ %add.ptr, %for.body ], [ %src, %entry ]
%0 = load double, ptr %src.addr.013, align 8
store double %0, ptr %dst.addr.014, align 8
%arrayidx2 = getelementptr inbounds double, ptr %src.addr.013, i64 1
%1 = load double, ptr %arrayidx2, align 8
%arrayidx3 = getelementptr inbounds double, ptr %dst.addr.014, i64 1
store double %1, ptr %arrayidx3, align 8
%add.ptr = getelementptr inbounds double, ptr %src.addr.013, i64 %i.015
%add.ptr4 = getelementptr inbounds double, ptr %dst.addr.014, i64 %i.015
%inc = add i64 %i.015, 1
%exitcond = icmp eq i64 %inc, %count
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body, %entry
ret void
}
define void @tiny_tree_fully_vectorizable2(ptr noalias nocapture %dst, ptr noalias nocapture readonly %src, i64 %count) #0 {
; CHECK-LABEL: @tiny_tree_fully_vectorizable2(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[CMP20:%.*]] = icmp eq i64 [[COUNT:%.*]], 0
; CHECK-NEXT: br i1 [[CMP20]], label [[FOR_END:%.*]], label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[I_023:%.*]] = phi i64 [ [[INC:%.*]], [[FOR_BODY]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: [[DST_ADDR_022:%.*]] = phi ptr [ [[ADD_PTR8:%.*]], [[FOR_BODY]] ], [ [[DST:%.*]], [[ENTRY]] ]
; CHECK-NEXT: [[SRC_ADDR_021:%.*]] = phi ptr [ [[ADD_PTR:%.*]], [[FOR_BODY]] ], [ [[SRC:%.*]], [[ENTRY]] ]
; CHECK-NEXT: [[TMP0:%.*]] = load <4 x float>, ptr [[SRC_ADDR_021]], align 4
; CHECK-NEXT: store <4 x float> [[TMP0]], ptr [[DST_ADDR_022]], align 4
; CHECK-NEXT: [[ADD_PTR]] = getelementptr inbounds float, ptr [[SRC_ADDR_021]], i64 [[I_023]]
; CHECK-NEXT: [[ADD_PTR8]] = getelementptr inbounds float, ptr [[DST_ADDR_022]], i64 [[I_023]]
; CHECK-NEXT: [[INC]] = add i64 [[I_023]], 1
; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[INC]], [[COUNT]]
; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_END]], label [[FOR_BODY]]
; CHECK: for.end:
; CHECK-NEXT: ret void
;
entry:
%cmp20 = icmp eq i64 %count, 0
br i1 %cmp20, label %for.end, label %for.body
for.body: ; preds = %entry, %for.body
%i.023 = phi i64 [ %inc, %for.body ], [ 0, %entry ]
%dst.addr.022 = phi ptr [ %add.ptr8, %for.body ], [ %dst, %entry ]
%src.addr.021 = phi ptr [ %add.ptr, %for.body ], [ %src, %entry ]
%0 = load float, ptr %src.addr.021, align 4
store float %0, ptr %dst.addr.022, align 4
%arrayidx2 = getelementptr inbounds float, ptr %src.addr.021, i64 1
%1 = load float, ptr %arrayidx2, align 4
%arrayidx3 = getelementptr inbounds float, ptr %dst.addr.022, i64 1
store float %1, ptr %arrayidx3, align 4
%arrayidx4 = getelementptr inbounds float, ptr %src.addr.021, i64 2
%2 = load float, ptr %arrayidx4, align 4
%arrayidx5 = getelementptr inbounds float, ptr %dst.addr.022, i64 2
store float %2, ptr %arrayidx5, align 4
%arrayidx6 = getelementptr inbounds float, ptr %src.addr.021, i64 3
%3 = load float, ptr %arrayidx6, align 4
%arrayidx7 = getelementptr inbounds float, ptr %dst.addr.022, i64 3
store float %3, ptr %arrayidx7, align 4
%add.ptr = getelementptr inbounds float, ptr %src.addr.021, i64 %i.023
%add.ptr8 = getelementptr inbounds float, ptr %dst.addr.022, i64 %i.023
%inc = add i64 %i.023, 1
%exitcond = icmp eq i64 %inc, %count
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body, %entry
ret void
}
; We do not vectorize the tiny tree which is not fully vectorizable.
define void @tiny_tree_not_fully_vectorizable(ptr noalias nocapture %dst, ptr noalias nocapture readonly %src, i64 %count) #0 {
; CHECK-LABEL: @tiny_tree_not_fully_vectorizable(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[CMP12:%.*]] = icmp eq i64 [[COUNT:%.*]], 0
; CHECK-NEXT: br i1 [[CMP12]], label [[FOR_END:%.*]], label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[I_015:%.*]] = phi i64 [ [[INC:%.*]], [[FOR_BODY]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: [[DST_ADDR_014:%.*]] = phi ptr [ [[ADD_PTR4:%.*]], [[FOR_BODY]] ], [ [[DST:%.*]], [[ENTRY]] ]
; CHECK-NEXT: [[SRC_ADDR_013:%.*]] = phi ptr [ [[ADD_PTR:%.*]], [[FOR_BODY]] ], [ [[SRC:%.*]], [[ENTRY]] ]
; CHECK-NEXT: [[TMP0:%.*]] = load double, ptr [[SRC_ADDR_013]], align 8
; CHECK-NEXT: store double [[TMP0]], ptr [[DST_ADDR_014]], align 8
; CHECK-NEXT: [[ARRAYIDX2:%.*]] = getelementptr inbounds double, ptr [[SRC_ADDR_013]], i64 2
; CHECK-NEXT: [[TMP1:%.*]] = load double, ptr [[ARRAYIDX2]], align 8
; CHECK-NEXT: [[ARRAYIDX3:%.*]] = getelementptr inbounds double, ptr [[DST_ADDR_014]], i64 1
; CHECK-NEXT: store double [[TMP1]], ptr [[ARRAYIDX3]], align 8
; CHECK-NEXT: [[ADD_PTR]] = getelementptr inbounds double, ptr [[SRC_ADDR_013]], i64 [[I_015]]
; CHECK-NEXT: [[ADD_PTR4]] = getelementptr inbounds double, ptr [[DST_ADDR_014]], i64 [[I_015]]
; CHECK-NEXT: [[INC]] = add i64 [[I_015]], 1
; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[INC]], [[COUNT]]
; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_END]], label [[FOR_BODY]]
; CHECK: for.end:
; CHECK-NEXT: ret void
;
entry:
%cmp12 = icmp eq i64 %count, 0
br i1 %cmp12, label %for.end, label %for.body
for.body: ; preds = %entry, %for.body
%i.015 = phi i64 [ %inc, %for.body ], [ 0, %entry ]
%dst.addr.014 = phi ptr [ %add.ptr4, %for.body ], [ %dst, %entry ]
%src.addr.013 = phi ptr [ %add.ptr, %for.body ], [ %src, %entry ]
%0 = load double, ptr %src.addr.013, align 8
store double %0, ptr %dst.addr.014, align 8
%arrayidx2 = getelementptr inbounds double, ptr %src.addr.013, i64 2
%1 = load double, ptr %arrayidx2, align 8
%arrayidx3 = getelementptr inbounds double, ptr %dst.addr.014, i64 1
store double %1, ptr %arrayidx3, align 8
%add.ptr = getelementptr inbounds double, ptr %src.addr.013, i64 %i.015
%add.ptr4 = getelementptr inbounds double, ptr %dst.addr.014, i64 %i.015
%inc = add i64 %i.015, 1
%exitcond = icmp eq i64 %inc, %count
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body, %entry
ret void
}
define void @tiny_tree_not_fully_vectorizable2(ptr noalias nocapture %dst, ptr noalias nocapture readonly %src, i64 %count) #0 {
; CHECK-LABEL: @tiny_tree_not_fully_vectorizable2(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[CMP20:%.*]] = icmp eq i64 [[COUNT:%.*]], 0
; CHECK-NEXT: br i1 [[CMP20]], label [[FOR_END:%.*]], label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[I_023:%.*]] = phi i64 [ [[INC:%.*]], [[FOR_BODY]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: [[DST_ADDR_022:%.*]] = phi ptr [ [[ADD_PTR8:%.*]], [[FOR_BODY]] ], [ [[DST:%.*]], [[ENTRY]] ]
; CHECK-NEXT: [[SRC_ADDR_021:%.*]] = phi ptr [ [[ADD_PTR:%.*]], [[FOR_BODY]] ], [ [[SRC:%.*]], [[ENTRY]] ]
; CHECK-NEXT: [[TMP0:%.*]] = load float, ptr [[SRC_ADDR_021]], align 4
; CHECK-NEXT: [[ARRAYIDX2:%.*]] = getelementptr inbounds float, ptr [[SRC_ADDR_021]], i64 4
; CHECK-NEXT: [[TMP1:%.*]] = load float, ptr [[ARRAYIDX2]], align 4
; CHECK-NEXT: [[ARRAYIDX4:%.*]] = getelementptr inbounds float, ptr [[SRC_ADDR_021]], i64 2
; CHECK-NEXT: [[TMP2:%.*]] = load <2 x float>, ptr [[ARRAYIDX4]], align 4
; CHECK-NEXT: [[TMP3:%.*]] = insertelement <4 x float> poison, float [[TMP0]], i32 0
; CHECK-NEXT: [[TMP4:%.*]] = insertelement <4 x float> [[TMP3]], float [[TMP1]], i32 1
; CHECK-NEXT: [[TMP5:%.*]] = call <4 x float> @llvm.vector.insert.v4f32.v2f32(<4 x float> [[TMP4]], <2 x float> [[TMP2]], i64 2)
; CHECK-NEXT: store <4 x float> [[TMP5]], ptr [[DST_ADDR_022]], align 4
; CHECK-NEXT: [[ADD_PTR]] = getelementptr inbounds float, ptr [[SRC_ADDR_021]], i64 [[I_023]]
; CHECK-NEXT: [[ADD_PTR8]] = getelementptr inbounds float, ptr [[DST_ADDR_022]], i64 [[I_023]]
; CHECK-NEXT: [[INC]] = add i64 [[I_023]], 1
; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[INC]], [[COUNT]]
; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_END]], label [[FOR_BODY]]
; CHECK: for.end:
; CHECK-NEXT: ret void
;
entry:
%cmp20 = icmp eq i64 %count, 0
br i1 %cmp20, label %for.end, label %for.body
for.body: ; preds = %entry, %for.body
%i.023 = phi i64 [ %inc, %for.body ], [ 0, %entry ]
%dst.addr.022 = phi ptr [ %add.ptr8, %for.body ], [ %dst, %entry ]
%src.addr.021 = phi ptr [ %add.ptr, %for.body ], [ %src, %entry ]
%0 = load float, ptr %src.addr.021, align 4
store float %0, ptr %dst.addr.022, align 4
%arrayidx2 = getelementptr inbounds float, ptr %src.addr.021, i64 4
%1 = load float, ptr %arrayidx2, align 4
%arrayidx3 = getelementptr inbounds float, ptr %dst.addr.022, i64 1
store float %1, ptr %arrayidx3, align 4
%arrayidx4 = getelementptr inbounds float, ptr %src.addr.021, i64 2
%2 = load float, ptr %arrayidx4, align 4
%arrayidx5 = getelementptr inbounds float, ptr %dst.addr.022, i64 2
store float %2, ptr %arrayidx5, align 4
%arrayidx6 = getelementptr inbounds float, ptr %src.addr.021, i64 3
%3 = load float, ptr %arrayidx6, align 4
%arrayidx7 = getelementptr inbounds float, ptr %dst.addr.022, i64 3
store float %3, ptr %arrayidx7, align 4
%add.ptr = getelementptr inbounds float, ptr %src.addr.021, i64 %i.023
%add.ptr8 = getelementptr inbounds float, ptr %dst.addr.022, i64 %i.023
%inc = add i64 %i.023, 1
%exitcond = icmp eq i64 %inc, %count
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body, %entry
ret void
}
define void @store_splat(ptr, float) {
; CHECK-LABEL: @store_splat(
; CHECK-NEXT: [[TMP3:%.*]] = insertelement <4 x float> poison, float [[TMP1:%.*]], i32 0
; CHECK-NEXT: [[TMP4:%.*]] = shufflevector <4 x float> [[TMP3]], <4 x float> poison, <4 x i32> zeroinitializer
; CHECK-NEXT: store <4 x float> [[TMP4]], ptr [[TMP0:%.*]], align 4
; CHECK-NEXT: ret void
;
store float %1, ptr %0, align 4
%3 = getelementptr inbounds float, ptr %0, i64 1
store float %1, ptr %3, align 4
%4 = getelementptr inbounds float, ptr %0, i64 2
store float %1, ptr %4, align 4
%5 = getelementptr inbounds float, ptr %0, i64 3
store float %1, ptr %5, align 4
ret void
}
define void @store_const(ptr %a) {
; CHECK-LABEL: @store_const(
; CHECK-NEXT: entry:
; CHECK-NEXT: store <4 x i32> <i32 10, i32 30, i32 20, i32 40>, ptr [[A:%.*]], align 4
; CHECK-NEXT: ret void
;
entry:
store i32 10, ptr %a, align 4
%ptr1 = getelementptr inbounds i32, ptr %a, i64 1
store i32 30, ptr %ptr1, align 4
%ptr2 = getelementptr inbounds i32, ptr %a, i64 2
store i32 20, ptr %ptr2, align 4
%ptr3 = getelementptr inbounds i32, ptr %a, i64 3
store i32 40, ptr %ptr3, align 4
ret void
}
define void @tiny_vector_gather(ptr %a, ptr %v1, ptr %v2) {
; CHECK-LABEL: @tiny_vector_gather(
; CHECK-NEXT: [[TMP1:%.*]] = load i32, ptr [[V1:%.*]], align 4
; CHECK-NEXT: [[TMP2:%.*]] = load i32, ptr [[V2:%.*]], align 4
; CHECK-NEXT: [[TMP3:%.*]] = insertelement <8 x i32> poison, i32 [[TMP1]], i32 0
; CHECK-NEXT: [[TMP4:%.*]] = insertelement <8 x i32> [[TMP3]], i32 [[TMP2]], i32 1
; CHECK-NEXT: [[TMP5:%.*]] = shufflevector <8 x i32> [[TMP4]], <8 x i32> poison, <8 x i32> <i32 0, i32 1, i32 0, i32 1, i32 0, i32 1, i32 0, i32 1>
; CHECK-NEXT: store <8 x i32> [[TMP5]], ptr [[A:%.*]], align 16
; CHECK-NEXT: ret void
;
%1 = load i32, ptr %v1, align 4
%2 = load i32, ptr %v2, align 4
store i32 %1, ptr %a, align 16
%ptr1 = getelementptr inbounds i32, ptr %a, i64 1
store i32 %2, ptr %ptr1, align 4
%ptr2 = getelementptr inbounds i32, ptr %a, i64 2
store i32 %1, ptr %ptr2, align 8
%ptr3 = getelementptr inbounds i32, ptr %a, i64 3
store i32 %2, ptr %ptr3, align 4
%ptr4 = getelementptr inbounds i32, ptr %a, i64 4
store i32 %1, ptr %ptr4, align 16
%ptr5 = getelementptr inbounds i32, ptr %a, i64 5
store i32 %2, ptr %ptr5, align 4
%ptr6 = getelementptr inbounds i32, ptr %a, i64 6
store i32 %1, ptr %ptr6, align 8
%ptr7 = getelementptr inbounds i32, ptr %a, i64 7
store i32 %2, ptr %ptr7, align 4
ret void
}
define void @tiny_vector_with_diff_opcode(ptr %a, ptr %v1) {
; CHECK-LABEL: @tiny_vector_with_diff_opcode(
; CHECK-NEXT: [[TMP1:%.*]] = load i16, ptr [[V1:%.*]], align 4
; CHECK-NEXT: [[TMP2:%.*]] = trunc i64 undef to i16
; CHECK-NEXT: [[TMP3:%.*]] = insertelement <8 x i16> poison, i16 [[TMP1]], i32 0
; CHECK-NEXT: [[TMP4:%.*]] = insertelement <8 x i16> [[TMP3]], i16 [[TMP2]], i32 1
; CHECK-NEXT: [[TMP5:%.*]] = shufflevector <8 x i16> [[TMP4]], <8 x i16> poison, <8 x i32> <i32 0, i32 1, i32 0, i32 1, i32 0, i32 1, i32 0, i32 1>
; CHECK-NEXT: store <8 x i16> [[TMP5]], ptr [[A:%.*]], align 16
; CHECK-NEXT: ret void
;
%1 = load i16, ptr %v1, align 4
%2 = trunc i64 undef to i16
store i16 %1, ptr %a, align 16
%ptr1 = getelementptr inbounds i16, ptr %a, i64 1
store i16 %2, ptr %ptr1, align 4
%ptr2 = getelementptr inbounds i16, ptr %a, i64 2
store i16 %1, ptr %ptr2, align 8
%ptr3 = getelementptr inbounds i16, ptr %a, i64 3
store i16 %2, ptr %ptr3, align 4
%ptr4 = getelementptr inbounds i16, ptr %a, i64 4
store i16 %1, ptr %ptr4, align 16
%ptr5 = getelementptr inbounds i16, ptr %a, i64 5
store i16 %2, ptr %ptr5, align 4
%ptr6 = getelementptr inbounds i16, ptr %a, i64 6
store i16 %1, ptr %ptr6, align 8
%ptr7 = getelementptr inbounds i16, ptr %a, i64 7
store i16 %2, ptr %ptr7, align 4
ret void
}
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