998c33e5fc
Now that FOR exit and resume value creation is explicitly modeled in VPlan (05e1b5340b0caf1, 07b330132c0b) it doesn't depend on the first order recurrence splice being preserved and it can now be marked as not having side-effects. This allows removal of first-order-recurrence-splce if the FOR is only used in the exit or as scalar ph resume value.
133 lines
7.3 KiB
LLVM
133 lines
7.3 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
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; RUN: opt -mtriple=x86_64 -mattr=-avx,-avx2,-avx512f,+sse,-sse2,-sse3,-sse4.2 -passes=loop-vectorize -S %s | FileCheck --check-prefix=NOVEC %s
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; RUN: opt -mtriple=x86_64 -mattr=-avx,-avx2,-avx512f,+sse,-sse2,-sse3,-sse4.2 -passes=loop-vectorize -force-vector-width=4 -S %s | FileCheck --check-prefix=VEC %s
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@h = global i64 0
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define void @test(ptr %p) {
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; NOVEC-LABEL: define void @test(
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; NOVEC-SAME: ptr [[P:%.*]]) #[[ATTR0:[0-9]+]] {
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; NOVEC-NEXT: entry:
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; NOVEC-NEXT: br label [[FOR_BODY:%.*]]
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; NOVEC: for.body:
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; NOVEC-NEXT: [[IDX_EXT_MERGE:%.*]] = phi i64 [ 1, [[ENTRY:%.*]] ], [ [[IDX:%.*]], [[FOR_BODY]] ]
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; NOVEC-NEXT: [[INC_MERGE:%.*]] = phi i16 [ 1, [[ENTRY]] ], [ [[INC:%.*]], [[FOR_BODY]] ]
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; NOVEC-NEXT: [[IDX_MERGE:%.*]] = phi i64 [ 0, [[ENTRY]] ], [ [[IDX_EXT_MERGE]], [[FOR_BODY]] ]
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; NOVEC-NEXT: [[ADD:%.*]] = shl i64 [[IDX_MERGE]], 1
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; NOVEC-NEXT: [[ARRAYIDX:%.*]] = getelementptr i64, ptr [[P]], i64 [[ADD]]
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; NOVEC-NEXT: store i64 0, ptr [[ARRAYIDX]], align 8
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; NOVEC-NEXT: [[INC]] = add i16 [[INC_MERGE]], 1
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; NOVEC-NEXT: [[IDX]] = zext i16 [[INC]] to i64
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; NOVEC-NEXT: [[GEP:%.*]] = getelementptr i64, ptr [[P]], i64 [[IDX]]
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; NOVEC-NEXT: [[CMP:%.*]] = icmp ugt ptr [[GEP]], @h
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; NOVEC-NEXT: br i1 [[CMP]], label [[EXIT:%.*]], label [[FOR_BODY]]
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; NOVEC: exit:
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; NOVEC-NEXT: ret void
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;
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; VEC-LABEL: define void @test(
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; VEC-SAME: ptr [[P:%.*]]) #[[ATTR0:[0-9]+]] {
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; VEC-NEXT: entry:
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; VEC-NEXT: [[P1:%.*]] = ptrtoint ptr [[P]] to i64
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; VEC-NEXT: [[TMP0:%.*]] = add i64 [[P1]], 16
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; VEC-NEXT: [[UMAX2:%.*]] = call i64 @llvm.umax.i64(i64 [[TMP0]], i64 add (i64 ptrtoint (ptr @h to i64), i64 1))
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; VEC-NEXT: [[TMP1:%.*]] = add i64 [[UMAX2]], -9
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; VEC-NEXT: [[TMP2:%.*]] = sub i64 [[TMP1]], [[P1]]
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; VEC-NEXT: [[TMP3:%.*]] = lshr i64 [[TMP2]], 3
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; VEC-NEXT: [[TMP4:%.*]] = add nuw nsw i64 [[TMP3]], 1
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; VEC-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[TMP4]], 4
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; VEC-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_SCEVCHECK:%.*]]
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; VEC: vector.scevcheck:
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; VEC-NEXT: [[TMP5:%.*]] = add i64 [[P1]], 16
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; VEC-NEXT: [[UMAX:%.*]] = call i64 @llvm.umax.i64(i64 [[TMP5]], i64 add (i64 ptrtoint (ptr @h to i64), i64 1))
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; VEC-NEXT: [[TMP6:%.*]] = add i64 [[UMAX]], -9
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; VEC-NEXT: [[TMP7:%.*]] = sub i64 [[TMP6]], [[P1]]
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; VEC-NEXT: [[TMP8:%.*]] = lshr i64 [[TMP7]], 3
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; VEC-NEXT: [[TMP9:%.*]] = icmp ugt i64 [[TMP8]], 65535
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; VEC-NEXT: [[TMP10:%.*]] = trunc i64 [[TMP8]] to i16
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; VEC-NEXT: [[TMP11:%.*]] = add i16 2, [[TMP10]]
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; VEC-NEXT: [[TMP12:%.*]] = icmp ult i16 [[TMP11]], 2
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; VEC-NEXT: [[TMP13:%.*]] = icmp ugt i64 [[TMP8]], 65535
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; VEC-NEXT: [[TMP14:%.*]] = or i1 [[TMP12]], [[TMP13]]
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; VEC-NEXT: br i1 [[TMP14]], label [[SCALAR_PH]], label [[VECTOR_PH:%.*]]
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; VEC: vector.ph:
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; VEC-NEXT: [[N_MOD_VF:%.*]] = urem i64 [[TMP4]], 4
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; VEC-NEXT: [[N_VEC:%.*]] = sub i64 [[TMP4]], [[N_MOD_VF]]
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; VEC-NEXT: [[DOTCAST:%.*]] = trunc i64 [[N_VEC]] to i16
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; VEC-NEXT: [[IND_END:%.*]] = add i16 1, [[DOTCAST]]
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; VEC-NEXT: br label [[VECTOR_BODY:%.*]]
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; VEC: vector.body:
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; VEC-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
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; VEC-NEXT: [[VECTOR_RECUR:%.*]] = phi <4 x i64> [ <i64 poison, i64 poison, i64 poison, i64 1>, [[VECTOR_PH]] ], [ [[TMP28:%.*]], [[VECTOR_BODY]] ]
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; VEC-NEXT: [[VEC_IND:%.*]] = phi <4 x i16> [ <i16 1, i16 2, i16 3, i16 4>, [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[VECTOR_BODY]] ]
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; VEC-NEXT: [[TMP15:%.*]] = add i64 [[INDEX]], 0
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; VEC-NEXT: [[TMP16:%.*]] = add i64 [[INDEX]], 1
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; VEC-NEXT: [[TMP17:%.*]] = add i64 [[INDEX]], 2
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; VEC-NEXT: [[TMP18:%.*]] = add i64 [[INDEX]], 3
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; VEC-NEXT: [[TMP19:%.*]] = shl i64 [[TMP15]], 1
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; VEC-NEXT: [[TMP20:%.*]] = shl i64 [[TMP16]], 1
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; VEC-NEXT: [[TMP21:%.*]] = shl i64 [[TMP17]], 1
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; VEC-NEXT: [[TMP22:%.*]] = shl i64 [[TMP18]], 1
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; VEC-NEXT: [[TMP23:%.*]] = getelementptr i64, ptr [[P]], i64 [[TMP19]]
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; VEC-NEXT: [[TMP24:%.*]] = getelementptr i64, ptr [[P]], i64 [[TMP20]]
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; VEC-NEXT: [[TMP25:%.*]] = getelementptr i64, ptr [[P]], i64 [[TMP21]]
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; VEC-NEXT: [[TMP26:%.*]] = getelementptr i64, ptr [[P]], i64 [[TMP22]]
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; VEC-NEXT: store i64 0, ptr [[TMP23]], align 8
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; VEC-NEXT: store i64 0, ptr [[TMP24]], align 8
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; VEC-NEXT: store i64 0, ptr [[TMP25]], align 8
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; VEC-NEXT: store i64 0, ptr [[TMP26]], align 8
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; VEC-NEXT: [[TMP27:%.*]] = add <4 x i16> [[VEC_IND]], <i16 1, i16 1, i16 1, i16 1>
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; VEC-NEXT: [[TMP28]] = zext <4 x i16> [[TMP27]] to <4 x i64>
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; VEC-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
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; VEC-NEXT: [[VEC_IND_NEXT]] = add <4 x i16> [[VEC_IND]], <i16 4, i16 4, i16 4, i16 4>
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; VEC-NEXT: [[TMP30:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
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; VEC-NEXT: br i1 [[TMP30]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
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; VEC: middle.block:
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; VEC-NEXT: [[VECTOR_RECUR_EXTRACT:%.*]] = extractelement <4 x i64> [[TMP28]], i32 3
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; VEC-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[TMP4]], [[N_VEC]]
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; VEC-NEXT: br i1 [[CMP_N]], label [[EXIT:%.*]], label [[SCALAR_PH]]
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; VEC: scalar.ph:
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; VEC-NEXT: [[SCALAR_RECUR_INIT:%.*]] = phi i64 [ 1, [[VECTOR_SCEVCHECK]] ], [ 1, [[ENTRY:%.*]] ], [ [[VECTOR_RECUR_EXTRACT]], [[MIDDLE_BLOCK]] ]
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; VEC-NEXT: [[BC_RESUME_VAL:%.*]] = phi i16 [ [[IND_END]], [[MIDDLE_BLOCK]] ], [ 1, [[ENTRY]] ], [ 1, [[VECTOR_SCEVCHECK]] ]
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; VEC-NEXT: [[BC_RESUME_VAL3:%.*]] = phi i64 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY]] ], [ 0, [[VECTOR_SCEVCHECK]] ]
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; VEC-NEXT: br label [[FOR_BODY:%.*]]
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; VEC: for.body:
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; VEC-NEXT: [[SCALAR_RECUR:%.*]] = phi i64 [ [[SCALAR_RECUR_INIT]], [[SCALAR_PH]] ], [ [[IDX:%.*]], [[FOR_BODY]] ]
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; VEC-NEXT: [[INC_MERGE:%.*]] = phi i16 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[INC:%.*]], [[FOR_BODY]] ]
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; VEC-NEXT: [[IDX_MERGE:%.*]] = phi i64 [ [[BC_RESUME_VAL3]], [[SCALAR_PH]] ], [ [[SCALAR_RECUR]], [[FOR_BODY]] ]
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; VEC-NEXT: [[ADD:%.*]] = shl i64 [[IDX_MERGE]], 1
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; VEC-NEXT: [[ARRAYIDX:%.*]] = getelementptr i64, ptr [[P]], i64 [[ADD]]
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; VEC-NEXT: store i64 0, ptr [[ARRAYIDX]], align 8
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; VEC-NEXT: [[INC]] = add i16 [[INC_MERGE]], 1
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; VEC-NEXT: [[IDX]] = zext i16 [[INC]] to i64
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; VEC-NEXT: [[GEP:%.*]] = getelementptr i64, ptr [[P]], i64 [[IDX]]
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; VEC-NEXT: [[CMP:%.*]] = icmp ugt ptr [[GEP]], @h
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; VEC-NEXT: br i1 [[CMP]], label [[EXIT]], label [[FOR_BODY]], !llvm.loop [[LOOP3:![0-9]+]]
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; VEC: exit:
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; VEC-NEXT: ret void
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;
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entry:
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br label %for.body
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for.body:
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%idx.ext.merge = phi i64 [ 1, %entry ], [ %idx, %for.body ]
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%inc.merge = phi i16 [ 1, %entry ], [ %inc, %for.body ]
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%idx.merge = phi i64 [ 0, %entry ], [ %idx.ext.merge, %for.body ]
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%add = shl i64 %idx.merge, 1
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%arrayidx = getelementptr i64, ptr %p, i64 %add
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store i64 0, ptr %arrayidx
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%inc = add i16 %inc.merge, 1
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%idx = zext i16 %inc to i64
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%gep = getelementptr i64, ptr %p, i64 %idx
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%cmp = icmp ugt ptr %gep, @h
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br i1 %cmp, label %exit, label %for.body
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exit:
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ret void
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}
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;.
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; VEC: [[LOOP0]] = distinct !{[[LOOP0]], [[META1:![0-9]+]], [[META2:![0-9]+]]}
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; VEC: [[META1]] = !{!"llvm.loop.isvectorized", i32 1}
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; VEC: [[META2]] = !{!"llvm.loop.unroll.runtime.disable"}
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; VEC: [[LOOP3]] = distinct !{[[LOOP3]], [[META1]]}
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;.
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