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[LV] Vectorize without versioning-for-unit-stride under -Os/-Oz
If a loop is in a function marked OptSize, Loop Access Analysis should refrain from generating runtime checks for unit strides that will version the loop. If a loop is in a function marked OptSize and its vectorization is enabled, it should be vectorized w/o any versioning. Fixes PR46228. Differential Revision: https://reviews.llvm.org/D81345
This commit is contained in:
Ayal Zaks
parent
d46bc6cdf6
commit
dfe7df7bd4
@ -1835,6 +1835,10 @@ void LoopAccessInfo::analyzeLoop(AAResults *AA, LoopInfo *LI,
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const bool IsAnnotatedParallel = TheLoop->isAnnotatedParallel();
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const bool EnableMemAccessVersioningOfLoop =
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EnableMemAccessVersioning &&
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!TheLoop->getHeader()->getParent()->hasOptSize();
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// For each block.
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for (BasicBlock *BB : TheLoop->blocks()) {
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// Scan the BB and collect legal loads and stores. Also detect any
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@ -1890,7 +1894,7 @@ void LoopAccessInfo::analyzeLoop(AAResults *AA, LoopInfo *LI,
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NumLoads++;
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Loads.push_back(Ld);
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DepChecker->addAccess(Ld);
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if (EnableMemAccessVersioning)
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if (EnableMemAccessVersioningOfLoop)
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collectStridedAccess(Ld);
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continue;
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}
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@ -1914,7 +1918,7 @@ void LoopAccessInfo::analyzeLoop(AAResults *AA, LoopInfo *LI,
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NumStores++;
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Stores.push_back(St);
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DepChecker->addAccess(St);
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if (EnableMemAccessVersioning)
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if (EnableMemAccessVersioningOfLoop)
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collectStridedAccess(St);
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}
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} // Next instr.
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@ -4937,15 +4937,8 @@ bool LoopVectorizationCostModel::runtimeChecksRequired() {
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return true;
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}
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// FIXME: Avoid specializing for stride==1 instead of bailing out.
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if (!Legal->getLAI()->getSymbolicStrides().empty()) {
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reportVectorizationFailure("Runtime stride check is required with -Os/-Oz",
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"runtime stride == 1 checks needed. Enable vectorization of "
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"this loop with '#pragma clang loop vectorize(enable)' when "
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"compiling with -Os/-Oz",
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"CantVersionLoopWithOptForSize", ORE, TheLoop);
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return true;
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}
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assert(Legal->getLAI()->getSymbolicStrides().empty() &&
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"Specializing for stride == 1 under -Os/-Oz");
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return false;
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}
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@ -7611,7 +7604,7 @@ static ScalarEpilogueLowering getScalarEpilogueLowering(
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PGSOQueryType::IRPass);
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// 1) OptSize takes precedence over all other options, i.e. if this is set,
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// don't look at hints or options, and don't request a scalar epilogue.
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if (OptSize && Hints.getForce() != LoopVectorizeHints::FK_Enabled)
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if (OptSize)
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return CM_ScalarEpilogueNotAllowedOptSize;
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bool PredicateOptDisabled = PreferPredicateOverEpilog.getNumOccurrences() &&
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@ -218,38 +218,35 @@ for.end: ; preds = %for.body
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attributes #1 = { minsize }
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; We can't vectorize this one because we version for stride==1; even having TC
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; a multiple of VF.
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; We can vectorize this one by refraining from versioning for stride==1.
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define void @scev4stride1(i32* noalias nocapture %a, i32* noalias nocapture readonly %b, i32 %k) #2 {
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; CHECK-LABEL: @scev4stride1(
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; CHECK-NEXT: for.body.preheader:
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; CHECK-NEXT: br label [[FOR_BODY:%.*]]
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; CHECK: for.body:
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; CHECK-NEXT: [[I_07:%.*]] = phi i32 [ [[INC:%.*]], [[FOR_BODY]] ], [ 0, [[FOR_BODY_PREHEADER:%.*]] ]
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; CHECK-NEXT: [[MUL:%.*]] = mul nsw i32 [[I_07]], [[K:%.*]]
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; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, i32* [[B:%.*]], i32 [[MUL]]
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; CHECK-NEXT: [[TMP0:%.*]] = load i32, i32* [[ARRAYIDX]], align 4
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; CHECK-NEXT: [[ARRAYIDX1:%.*]] = getelementptr inbounds i32, i32* [[A:%.*]], i32 [[I_07]]
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; CHECK-NEXT: store i32 [[TMP0]], i32* [[ARRAYIDX1]], align 4
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; CHECK-NEXT: [[INC]] = add nuw nsw i32 [[I_07]], 1
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; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i32 [[INC]], 256
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; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_END_LOOPEXIT:%.*]], label [[FOR_BODY]]
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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 <64 x i32> undef, i32 [[K:%.*]], i32 0
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; CHECK-NEXT: [[BROADCAST_SPLAT:%.*]] = shufflevector <64 x i32> [[BROADCAST_SPLATINSERT]], <64 x i32> undef, <64 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: middle.block:
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; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i32 256, 256
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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.end.loopexit:
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; CHECK-NEXT: ret void
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;
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; AUTOVF-LABEL: @scev4stride1(
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; AUTOVF-NEXT: for.body.preheader:
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; AUTOVF-NEXT: br label [[FOR_BODY:%.*]]
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; AUTOVF: for.body:
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; AUTOVF-NEXT: [[I_07:%.*]] = phi i32 [ [[INC:%.*]], [[FOR_BODY]] ], [ 0, [[FOR_BODY_PREHEADER:%.*]] ]
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; AUTOVF-NEXT: [[MUL:%.*]] = mul nsw i32 [[I_07]], [[K:%.*]]
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; AUTOVF-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, i32* [[B:%.*]], i32 [[MUL]]
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; AUTOVF-NEXT: [[TMP0:%.*]] = load i32, i32* [[ARRAYIDX]], align 4
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; AUTOVF-NEXT: [[ARRAYIDX1:%.*]] = getelementptr inbounds i32, i32* [[A:%.*]], i32 [[I_07]]
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; AUTOVF-NEXT: store i32 [[TMP0]], i32* [[ARRAYIDX1]], align 4
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; AUTOVF-NEXT: [[INC]] = add nuw nsw i32 [[I_07]], 1
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; AUTOVF-NEXT: [[EXITCOND:%.*]] = icmp eq i32 [[INC]], 256
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; AUTOVF-NEXT: br i1 [[EXITCOND]], label [[FOR_END_LOOPEXIT:%.*]], label [[FOR_BODY]]
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; AUTOVF-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
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; AUTOVF: vector.ph:
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; AUTOVF-NEXT: [[BROADCAST_SPLATINSERT:%.*]] = insertelement <8 x i32> undef, i32 [[K:%.*]], i32 0
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; AUTOVF-NEXT: [[BROADCAST_SPLAT:%.*]] = shufflevector <8 x i32> [[BROADCAST_SPLATINSERT]], <8 x i32> undef, <8 x i32> zeroinitializer
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; AUTOVF-NEXT: br label [[VECTOR_BODY:%.*]]
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; AUTOVF: vector.body:
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; AUTOVF: middle.block:
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; AUTOVF-NEXT: [[CMP_N:%.*]] = icmp eq i32 256, 256
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; AUTOVF-NEXT: br i1 [[CMP_N]], label [[FOR_END_LOOPEXIT:%.*]], label [[SCALAR_PH]]
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; AUTOVF: scalar.ph:
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; AUTOVF: for.end.loopexit:
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; AUTOVF-NEXT: ret void
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;
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@ -1,6 +1,6 @@
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -loop-vectorize -S | FileCheck %s --check-prefixes=CHECK,DEFAULT
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; RUN: opt < %s -loop-vectorize -prefer-predicate-over-epilog -S | FileCheck %s --check-prefixes=CHECK,PREDFLAG
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; RUN: opt < %s -loop-vectorize -S | FileCheck %s
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; RUN: opt < %s -loop-vectorize -prefer-predicate-over-epilog -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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target triple = "x86_64-unknown-linux-gnu"
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@ -74,141 +74,56 @@ for.body:
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br i1 %exitcond, label %for.cond.cleanup, label %for.body, !llvm.loop !6
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}
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; Marking function as optsize turns tail folding on, as if explicit tail folding
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; flag was enabled.
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define dso_local void @tail_folding_disabled(i32* noalias nocapture %A, i32* noalias nocapture readonly %B, i32* noalias nocapture readonly %C) local_unnamed_addr #0 {
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; DEFAULT-LABEL: @tail_folding_disabled(
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; DEFAULT-NEXT: entry:
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; DEFAULT-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
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; DEFAULT: vector.ph:
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; DEFAULT-NEXT: br label [[VECTOR_BODY:%.*]]
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; DEFAULT: vector.body:
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; DEFAULT-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
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; DEFAULT-NEXT: [[TMP0:%.*]] = add i64 [[INDEX]], 0
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; DEFAULT-NEXT: [[TMP1:%.*]] = add i64 [[INDEX]], 8
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; DEFAULT-NEXT: [[TMP2:%.*]] = add i64 [[INDEX]], 16
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; DEFAULT-NEXT: [[TMP3:%.*]] = add i64 [[INDEX]], 24
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; DEFAULT-NEXT: [[TMP4:%.*]] = getelementptr inbounds i32, i32* [[B:%.*]], i64 [[TMP0]]
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; DEFAULT-NEXT: [[TMP5:%.*]] = getelementptr inbounds i32, i32* [[B]], i64 [[TMP1]]
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; DEFAULT-NEXT: [[TMP6:%.*]] = getelementptr inbounds i32, i32* [[B]], i64 [[TMP2]]
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; DEFAULT-NEXT: [[TMP7:%.*]] = getelementptr inbounds i32, i32* [[B]], i64 [[TMP3]]
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; DEFAULT-NEXT: [[TMP8:%.*]] = getelementptr inbounds i32, i32* [[TMP4]], i32 0
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; DEFAULT-NEXT: [[TMP9:%.*]] = bitcast i32* [[TMP8]] to <8 x i32>*
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; DEFAULT-NEXT: [[WIDE_LOAD:%.*]] = load <8 x i32>, <8 x i32>* [[TMP9]], align 4
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; DEFAULT-NEXT: [[TMP10:%.*]] = getelementptr inbounds i32, i32* [[TMP4]], i32 8
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; DEFAULT-NEXT: [[TMP11:%.*]] = bitcast i32* [[TMP10]] to <8 x i32>*
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; DEFAULT-NEXT: [[WIDE_LOAD1:%.*]] = load <8 x i32>, <8 x i32>* [[TMP11]], align 4
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; DEFAULT-NEXT: [[TMP12:%.*]] = getelementptr inbounds i32, i32* [[TMP4]], i32 16
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; DEFAULT-NEXT: [[TMP13:%.*]] = bitcast i32* [[TMP12]] to <8 x i32>*
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; DEFAULT-NEXT: [[WIDE_LOAD2:%.*]] = load <8 x i32>, <8 x i32>* [[TMP13]], align 4
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; DEFAULT-NEXT: [[TMP14:%.*]] = getelementptr inbounds i32, i32* [[TMP4]], i32 24
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; DEFAULT-NEXT: [[TMP15:%.*]] = bitcast i32* [[TMP14]] to <8 x i32>*
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; DEFAULT-NEXT: [[WIDE_LOAD3:%.*]] = load <8 x i32>, <8 x i32>* [[TMP15]], align 4
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; DEFAULT-NEXT: [[TMP16:%.*]] = getelementptr inbounds i32, i32* [[C:%.*]], i64 [[TMP0]]
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; DEFAULT-NEXT: [[TMP17:%.*]] = getelementptr inbounds i32, i32* [[C]], i64 [[TMP1]]
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; DEFAULT-NEXT: [[TMP18:%.*]] = getelementptr inbounds i32, i32* [[C]], i64 [[TMP2]]
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; DEFAULT-NEXT: [[TMP19:%.*]] = getelementptr inbounds i32, i32* [[C]], i64 [[TMP3]]
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; DEFAULT-NEXT: [[TMP20:%.*]] = getelementptr inbounds i32, i32* [[TMP16]], i32 0
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; DEFAULT-NEXT: [[TMP21:%.*]] = bitcast i32* [[TMP20]] to <8 x i32>*
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; DEFAULT-NEXT: [[WIDE_LOAD4:%.*]] = load <8 x i32>, <8 x i32>* [[TMP21]], align 4
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; DEFAULT-NEXT: [[TMP22:%.*]] = getelementptr inbounds i32, i32* [[TMP16]], i32 8
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; DEFAULT-NEXT: [[TMP23:%.*]] = bitcast i32* [[TMP22]] to <8 x i32>*
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; DEFAULT-NEXT: [[WIDE_LOAD5:%.*]] = load <8 x i32>, <8 x i32>* [[TMP23]], align 4
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; DEFAULT-NEXT: [[TMP24:%.*]] = getelementptr inbounds i32, i32* [[TMP16]], i32 16
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; DEFAULT-NEXT: [[TMP25:%.*]] = bitcast i32* [[TMP24]] to <8 x i32>*
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; DEFAULT-NEXT: [[WIDE_LOAD6:%.*]] = load <8 x i32>, <8 x i32>* [[TMP25]], align 4
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; DEFAULT-NEXT: [[TMP26:%.*]] = getelementptr inbounds i32, i32* [[TMP16]], i32 24
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; DEFAULT-NEXT: [[TMP27:%.*]] = bitcast i32* [[TMP26]] to <8 x i32>*
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; DEFAULT-NEXT: [[WIDE_LOAD7:%.*]] = load <8 x i32>, <8 x i32>* [[TMP27]], align 4
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; DEFAULT-NEXT: [[TMP28:%.*]] = add nsw <8 x i32> [[WIDE_LOAD4]], [[WIDE_LOAD]]
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; DEFAULT-NEXT: [[TMP29:%.*]] = add nsw <8 x i32> [[WIDE_LOAD5]], [[WIDE_LOAD1]]
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; DEFAULT-NEXT: [[TMP30:%.*]] = add nsw <8 x i32> [[WIDE_LOAD6]], [[WIDE_LOAD2]]
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; DEFAULT-NEXT: [[TMP31:%.*]] = add nsw <8 x i32> [[WIDE_LOAD7]], [[WIDE_LOAD3]]
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; DEFAULT-NEXT: [[TMP32:%.*]] = getelementptr inbounds i32, i32* [[A:%.*]], i64 [[TMP0]]
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; DEFAULT-NEXT: [[TMP33:%.*]] = getelementptr inbounds i32, i32* [[A]], i64 [[TMP1]]
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; DEFAULT-NEXT: [[TMP34:%.*]] = getelementptr inbounds i32, i32* [[A]], i64 [[TMP2]]
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; DEFAULT-NEXT: [[TMP35:%.*]] = getelementptr inbounds i32, i32* [[A]], i64 [[TMP3]]
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; DEFAULT-NEXT: [[TMP36:%.*]] = getelementptr inbounds i32, i32* [[TMP32]], i32 0
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; DEFAULT-NEXT: [[TMP37:%.*]] = bitcast i32* [[TMP36]] to <8 x i32>*
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; DEFAULT-NEXT: store <8 x i32> [[TMP28]], <8 x i32>* [[TMP37]], align 4
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; DEFAULT-NEXT: [[TMP38:%.*]] = getelementptr inbounds i32, i32* [[TMP32]], i32 8
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; DEFAULT-NEXT: [[TMP39:%.*]] = bitcast i32* [[TMP38]] to <8 x i32>*
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; DEFAULT-NEXT: store <8 x i32> [[TMP29]], <8 x i32>* [[TMP39]], align 4
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; DEFAULT-NEXT: [[TMP40:%.*]] = getelementptr inbounds i32, i32* [[TMP32]], i32 16
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; DEFAULT-NEXT: [[TMP41:%.*]] = bitcast i32* [[TMP40]] to <8 x i32>*
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; DEFAULT-NEXT: store <8 x i32> [[TMP30]], <8 x i32>* [[TMP41]], align 4
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; DEFAULT-NEXT: [[TMP42:%.*]] = getelementptr inbounds i32, i32* [[TMP32]], i32 24
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; DEFAULT-NEXT: [[TMP43:%.*]] = bitcast i32* [[TMP42]] to <8 x i32>*
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; DEFAULT-NEXT: store <8 x i32> [[TMP31]], <8 x i32>* [[TMP43]], align 4
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; DEFAULT-NEXT: [[INDEX_NEXT]] = add i64 [[INDEX]], 32
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; DEFAULT-NEXT: [[TMP44:%.*]] = icmp eq i64 [[INDEX_NEXT]], 416
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; DEFAULT-NEXT: br i1 [[TMP44]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop !4
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; DEFAULT: middle.block:
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; DEFAULT-NEXT: [[CMP_N:%.*]] = icmp eq i64 430, 416
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; DEFAULT-NEXT: br i1 [[CMP_N]], label [[FOR_COND_CLEANUP:%.*]], label [[SCALAR_PH]]
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; DEFAULT: scalar.ph:
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; DEFAULT-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 416, [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
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; DEFAULT-NEXT: br label [[FOR_BODY:%.*]]
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; DEFAULT: for.cond.cleanup:
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; DEFAULT-NEXT: ret void
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; DEFAULT: for.body:
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; DEFAULT-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ]
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; DEFAULT-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, i32* [[B]], i64 [[INDVARS_IV]]
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; DEFAULT-NEXT: [[TMP45:%.*]] = load i32, i32* [[ARRAYIDX]], align 4
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; DEFAULT-NEXT: [[ARRAYIDX2:%.*]] = getelementptr inbounds i32, i32* [[C]], i64 [[INDVARS_IV]]
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; DEFAULT-NEXT: [[TMP46:%.*]] = load i32, i32* [[ARRAYIDX2]], align 4
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; DEFAULT-NEXT: [[ADD:%.*]] = add nsw i32 [[TMP46]], [[TMP45]]
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; DEFAULT-NEXT: [[ARRAYIDX4:%.*]] = getelementptr inbounds i32, i32* [[A]], i64 [[INDVARS_IV]]
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; DEFAULT-NEXT: store i32 [[ADD]], i32* [[ARRAYIDX4]], align 4
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; DEFAULT-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1
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; DEFAULT-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[INDVARS_IV_NEXT]], 430
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; DEFAULT-NEXT: br i1 [[EXITCOND]], label [[FOR_COND_CLEANUP]], label [[FOR_BODY]], !llvm.loop !5
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;
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; PREDFLAG-LABEL: @tail_folding_disabled(
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; PREDFLAG-NEXT: entry:
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; PREDFLAG-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
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; PREDFLAG: vector.ph:
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; PREDFLAG-NEXT: br label [[VECTOR_BODY:%.*]]
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; PREDFLAG: vector.body:
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; PREDFLAG-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
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; PREDFLAG-NEXT: [[BROADCAST_SPLATINSERT:%.*]] = insertelement <8 x i64> undef, i64 [[INDEX]], i32 0
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; PREDFLAG-NEXT: [[BROADCAST_SPLAT:%.*]] = shufflevector <8 x i64> [[BROADCAST_SPLATINSERT]], <8 x i64> undef, <8 x i32> zeroinitializer
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; PREDFLAG-NEXT: [[INDUCTION:%.*]] = add <8 x i64> [[BROADCAST_SPLAT]], <i64 0, i64 1, i64 2, i64 3, i64 4, i64 5, i64 6, i64 7>
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; PREDFLAG-NEXT: [[TMP0:%.*]] = add i64 [[INDEX]], 0
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; PREDFLAG-NEXT: [[TMP1:%.*]] = getelementptr inbounds i32, i32* [[B:%.*]], i64 [[TMP0]]
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; PREDFLAG-NEXT: [[TMP2:%.*]] = icmp ule <8 x i64> [[INDUCTION]], <i64 429, i64 429, i64 429, i64 429, i64 429, i64 429, i64 429, i64 429>
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; PREDFLAG-NEXT: [[TMP3:%.*]] = getelementptr inbounds i32, i32* [[TMP1]], i32 0
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; PREDFLAG-NEXT: [[TMP4:%.*]] = bitcast i32* [[TMP3]] to <8 x i32>*
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; PREDFLAG-NEXT: [[WIDE_MASKED_LOAD:%.*]] = call <8 x i32> @llvm.masked.load.v8i32.p0v8i32(<8 x i32>* [[TMP4]], i32 4, <8 x i1> [[TMP2]], <8 x i32> undef)
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; PREDFLAG-NEXT: [[TMP5:%.*]] = getelementptr inbounds i32, i32* [[C:%.*]], i64 [[TMP0]]
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; PREDFLAG-NEXT: [[TMP6:%.*]] = getelementptr inbounds i32, i32* [[TMP5]], i32 0
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; PREDFLAG-NEXT: [[TMP7:%.*]] = bitcast i32* [[TMP6]] to <8 x i32>*
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; PREDFLAG-NEXT: [[WIDE_MASKED_LOAD1:%.*]] = call <8 x i32> @llvm.masked.load.v8i32.p0v8i32(<8 x i32>* [[TMP7]], i32 4, <8 x i1> [[TMP2]], <8 x i32> undef)
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; PREDFLAG-NEXT: [[TMP8:%.*]] = add nsw <8 x i32> [[WIDE_MASKED_LOAD1]], [[WIDE_MASKED_LOAD]]
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; PREDFLAG-NEXT: [[TMP9:%.*]] = getelementptr inbounds i32, i32* [[A:%.*]], i64 [[TMP0]]
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; PREDFLAG-NEXT: [[TMP10:%.*]] = getelementptr inbounds i32, i32* [[TMP9]], i32 0
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; PREDFLAG-NEXT: [[TMP11:%.*]] = bitcast i32* [[TMP10]] to <8 x i32>*
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; PREDFLAG-NEXT: call void @llvm.masked.store.v8i32.p0v8i32(<8 x i32> [[TMP8]], <8 x i32>* [[TMP11]], i32 4, <8 x i1> [[TMP2]])
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; PREDFLAG-NEXT: [[INDEX_NEXT]] = add i64 [[INDEX]], 8
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; PREDFLAG-NEXT: [[TMP12:%.*]] = icmp eq i64 [[INDEX_NEXT]], 432
|
||||
; PREDFLAG-NEXT: br i1 [[TMP12]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop !4
|
||||
; PREDFLAG: middle.block:
|
||||
; PREDFLAG-NEXT: br i1 true, label [[FOR_COND_CLEANUP:%.*]], label [[SCALAR_PH]]
|
||||
; PREDFLAG: scalar.ph:
|
||||
; PREDFLAG-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 432, [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
|
||||
; PREDFLAG-NEXT: br label [[FOR_BODY:%.*]]
|
||||
; PREDFLAG: for.cond.cleanup:
|
||||
; PREDFLAG-NEXT: ret void
|
||||
; PREDFLAG: for.body:
|
||||
; PREDFLAG-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ]
|
||||
; PREDFLAG-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, i32* [[B]], i64 [[INDVARS_IV]]
|
||||
; PREDFLAG-NEXT: [[TMP13:%.*]] = load i32, i32* [[ARRAYIDX]], align 4
|
||||
; PREDFLAG-NEXT: [[ARRAYIDX2:%.*]] = getelementptr inbounds i32, i32* [[C]], i64 [[INDVARS_IV]]
|
||||
; PREDFLAG-NEXT: [[TMP14:%.*]] = load i32, i32* [[ARRAYIDX2]], align 4
|
||||
; PREDFLAG-NEXT: [[ADD:%.*]] = add nsw i32 [[TMP14]], [[TMP13]]
|
||||
; PREDFLAG-NEXT: [[ARRAYIDX4:%.*]] = getelementptr inbounds i32, i32* [[A]], i64 [[INDVARS_IV]]
|
||||
; PREDFLAG-NEXT: store i32 [[ADD]], i32* [[ARRAYIDX4]], align 4
|
||||
; PREDFLAG-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1
|
||||
; PREDFLAG-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[INDVARS_IV_NEXT]], 430
|
||||
; PREDFLAG-NEXT: br i1 [[EXITCOND]], label [[FOR_COND_CLEANUP]], label [[FOR_BODY]], !llvm.loop !5
|
||||
; CHECK-LABEL: @tail_folding_disabled(
|
||||
; CHECK-NEXT: entry:
|
||||
; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
|
||||
; CHECK: vector.ph:
|
||||
; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
|
||||
; CHECK: vector.body:
|
||||
; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
|
||||
; CHECK-NEXT: [[BROADCAST_SPLATINSERT:%.*]] = insertelement <8 x i64> undef, i64 [[INDEX]], i32 0
|
||||
; CHECK-NEXT: [[BROADCAST_SPLAT:%.*]] = shufflevector <8 x i64> [[BROADCAST_SPLATINSERT]], <8 x i64> undef, <8 x i32> zeroinitializer
|
||||
; CHECK-NEXT: [[INDUCTION:%.*]] = add <8 x i64> [[BROADCAST_SPLAT]], <i64 0, i64 1, i64 2, i64 3, i64 4, i64 5, i64 6, i64 7>
|
||||
; CHECK-NEXT: [[TMP0:%.*]] = add i64 [[INDEX]], 0
|
||||
; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds i32, i32* [[B:%.*]], i64 [[TMP0]]
|
||||
; CHECK-NEXT: [[TMP2:%.*]] = icmp ule <8 x i64> [[INDUCTION]], <i64 429, i64 429, i64 429, i64 429, i64 429, i64 429, i64 429, i64 429>
|
||||
; CHECK-NEXT: [[TMP3:%.*]] = getelementptr inbounds i32, i32* [[TMP1]], i32 0
|
||||
; CHECK-NEXT: [[TMP4:%.*]] = bitcast i32* [[TMP3]] to <8 x i32>*
|
||||
; CHECK-NEXT: [[WIDE_MASKED_LOAD:%.*]] = call <8 x i32> @llvm.masked.load.v8i32.p0v8i32(<8 x i32>* [[TMP4]], i32 4, <8 x i1> [[TMP2]], <8 x i32> undef)
|
||||
; CHECK-NEXT: [[TMP5:%.*]] = getelementptr inbounds i32, i32* [[C:%.*]], i64 [[TMP0]]
|
||||
; CHECK-NEXT: [[TMP6:%.*]] = getelementptr inbounds i32, i32* [[TMP5]], i32 0
|
||||
; CHECK-NEXT: [[TMP7:%.*]] = bitcast i32* [[TMP6]] to <8 x i32>*
|
||||
; CHECK-NEXT: [[WIDE_MASKED_LOAD1:%.*]] = call <8 x i32> @llvm.masked.load.v8i32.p0v8i32(<8 x i32>* [[TMP7]], i32 4, <8 x i1> [[TMP2]], <8 x i32> undef)
|
||||
; CHECK-NEXT: [[TMP8:%.*]] = add nsw <8 x i32> [[WIDE_MASKED_LOAD1]], [[WIDE_MASKED_LOAD]]
|
||||
; CHECK-NEXT: [[TMP9:%.*]] = getelementptr inbounds i32, i32* [[A:%.*]], i64 [[TMP0]]
|
||||
; CHECK-NEXT: [[TMP10:%.*]] = getelementptr inbounds i32, i32* [[TMP9]], i32 0
|
||||
; CHECK-NEXT: [[TMP11:%.*]] = bitcast i32* [[TMP10]] to <8 x i32>*
|
||||
; CHECK-NEXT: call void @llvm.masked.store.v8i32.p0v8i32(<8 x i32> [[TMP8]], <8 x i32>* [[TMP11]], i32 4, <8 x i1> [[TMP2]])
|
||||
; CHECK-NEXT: [[INDEX_NEXT]] = add i64 [[INDEX]], 8
|
||||
; CHECK-NEXT: [[TMP12:%.*]] = icmp eq i64 [[INDEX_NEXT]], 432
|
||||
; CHECK-NEXT: br i1 [[TMP12]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop !4
|
||||
; CHECK: middle.block:
|
||||
; CHECK-NEXT: br i1 true, label [[FOR_COND_CLEANUP:%.*]], label [[SCALAR_PH]]
|
||||
; CHECK: scalar.ph:
|
||||
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 432, [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
|
||||
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
|
||||
; CHECK: for.cond.cleanup:
|
||||
; CHECK-NEXT: ret void
|
||||
; CHECK: for.body:
|
||||
; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ]
|
||||
; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, i32* [[B]], i64 [[INDVARS_IV]]
|
||||
; CHECK-NEXT: [[TMP13:%.*]] = load i32, i32* [[ARRAYIDX]], align 4
|
||||
; CHECK-NEXT: [[ARRAYIDX2:%.*]] = getelementptr inbounds i32, i32* [[C]], i64 [[INDVARS_IV]]
|
||||
; CHECK-NEXT: [[TMP14:%.*]] = load i32, i32* [[ARRAYIDX2]], align 4
|
||||
; CHECK-NEXT: [[ADD:%.*]] = add nsw i32 [[TMP14]], [[TMP13]]
|
||||
; CHECK-NEXT: [[ARRAYIDX4:%.*]] = getelementptr inbounds i32, i32* [[A]], i64 [[INDVARS_IV]]
|
||||
; CHECK-NEXT: store i32 [[ADD]], i32* [[ARRAYIDX4]], align 4
|
||||
; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1
|
||||
; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[INDVARS_IV_NEXT]], 430
|
||||
; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_COND_CLEANUP]], label [[FOR_BODY]], !llvm.loop !5
|
||||
;
|
||||
entry:
|
||||
br label %for.body
|
||||
|
||||
@ -154,6 +154,73 @@ exit:
|
||||
ret i32 %for
|
||||
}
|
||||
|
||||
; PR46228: Vectorize w/o versioning for unit stride under optsize and enabled
|
||||
; vectorization.
|
||||
|
||||
; NOTE: Some assertions have been autogenerated by utils/update_test_checks.py
|
||||
define void @stride1(i16* noalias %B, i32 %BStride) optsize {
|
||||
; CHECK-LABEL: @stride1(
|
||||
; CHECK-NEXT: entry:
|
||||
; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
|
||||
; CHECK: vector.ph:
|
||||
; CHECK-NEXT: [[BROADCAST_SPLATINSERT:%.*]] = insertelement <2 x i32> undef, i32 [[BSTRIDE:%.*]], i32 0
|
||||
; CHECK-NEXT: [[BROADCAST_SPLAT:%.*]] = shufflevector <2 x i32> [[BROADCAST_SPLATINSERT]], <2 x i32> undef, <2 x i32> zeroinitializer
|
||||
; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
|
||||
; CHECK: vector.body:
|
||||
; CHECK-NEXT: [[INDEX:%.*]] = phi i32 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[PRED_STORE_CONTINUE2:%.*]] ]
|
||||
; CHECK-NEXT: [[VEC_IND:%.*]] = phi <2 x i32> [ <i32 0, i32 1>, [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[PRED_STORE_CONTINUE2]] ]
|
||||
; CHECK-NEXT: [[TMP0:%.*]] = mul nsw <2 x i32> [[VEC_IND]], [[BROADCAST_SPLAT]]
|
||||
; CHECK-NEXT: [[TMP1:%.*]] = icmp ule <2 x i32> [[VEC_IND]], <i32 1024, i32 1024>
|
||||
; CHECK-NEXT: [[TMP2:%.*]] = extractelement <2 x i1> [[TMP1]], i32 0
|
||||
; CHECK-NEXT: br i1 [[TMP2]], label [[PRED_STORE_IF:%.*]], label [[PRED_STORE_CONTINUE:%.*]]
|
||||
; CHECK: pred.store.if:
|
||||
; CHECK-NEXT: [[TMP3:%.*]] = extractelement <2 x i32> [[TMP0]], i32 0
|
||||
; CHECK-NEXT: [[TMP4:%.*]] = getelementptr inbounds i16, i16* [[B:%.*]], i32 [[TMP3]]
|
||||
; CHECK-NEXT: store i16 42, i16* [[TMP4]], align 4
|
||||
; CHECK-NEXT: br label [[PRED_STORE_CONTINUE]]
|
||||
; CHECK: pred.store.continue:
|
||||
; CHECK-NEXT: [[TMP5:%.*]] = extractelement <2 x i1> [[TMP1]], i32 1
|
||||
; CHECK-NEXT: br i1 [[TMP5]], label [[PRED_STORE_IF1:%.*]], label [[PRED_STORE_CONTINUE2]]
|
||||
; CHECK: pred.store.if1:
|
||||
; CHECK-NEXT: [[TMP6:%.*]] = extractelement <2 x i32> [[TMP0]], i32 1
|
||||
; CHECK-NEXT: [[TMP7:%.*]] = getelementptr inbounds i16, i16* [[B]], i32 [[TMP6]]
|
||||
; CHECK-NEXT: store i16 42, i16* [[TMP7]], align 4
|
||||
; CHECK-NEXT: br label [[PRED_STORE_CONTINUE2]]
|
||||
; CHECK: pred.store.continue2:
|
||||
; CHECK-NEXT: [[INDEX_NEXT]] = add i32 [[INDEX]], 2
|
||||
; CHECK-NEXT: [[VEC_IND_NEXT]] = add <2 x i32> [[VEC_IND]], <i32 2, i32 2>
|
||||
; CHECK-NEXT: [[TMP8:%.*]] = icmp eq i32 [[INDEX_NEXT]], 1026
|
||||
; CHECK-NEXT: br i1 [[TMP8]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop !19
|
||||
; CHECK: middle.block:
|
||||
; CHECK-NEXT: br i1 true, label [[FOR_END:%.*]], label [[SCALAR_PH]]
|
||||
; CHECK: scalar.ph:
|
||||
; CHECK: for.end:
|
||||
; CHECK-NEXT: ret void
|
||||
;
|
||||
; PGSO-LABEL: @stride1(
|
||||
; PGSO-NEXT: entry:
|
||||
; PGSO-NEXT: br i1 false, label %scalar.ph, label %vector.ph
|
||||
;
|
||||
; NPGSO-LABEL: @stride1(
|
||||
; NPGSO-NEXT: entry:
|
||||
; NPGSO-NEXT: br i1 false, label %scalar.ph, label %vector.ph
|
||||
|
||||
entry:
|
||||
br label %for.body
|
||||
|
||||
for.body:
|
||||
%iv = phi i32 [ %iv.next, %for.body ], [ 0, %entry ]
|
||||
%mulB = mul nsw i32 %iv, %BStride
|
||||
%gepOfB = getelementptr inbounds i16, i16* %B, i32 %mulB
|
||||
store i16 42, i16* %gepOfB, align 4
|
||||
%iv.next = add nuw nsw i32 %iv, 1
|
||||
%exitcond = icmp eq i32 %iv.next, 1025
|
||||
br i1 %exitcond, label %for.end, label %for.body, !llvm.loop !15
|
||||
|
||||
for.end:
|
||||
ret void
|
||||
}
|
||||
|
||||
!llvm.module.flags = !{!0}
|
||||
!0 = !{i32 1, !"ProfileSummary", !1}
|
||||
!1 = !{!2, !3, !4, !5, !6, !7, !8, !9}
|
||||
@ -170,3 +237,5 @@ exit:
|
||||
!12 = !{i32 999000, i64 100, i32 1}
|
||||
!13 = !{i32 999999, i64 1, i32 2}
|
||||
!14 = !{!"function_entry_count", i64 0}
|
||||
!15 = distinct !{!15, !16}
|
||||
!16 = !{!"llvm.loop.vectorize.enable", i1 true}
|
||||
|
||||
@ -26,13 +26,57 @@ bb68:
|
||||
ret void
|
||||
}
|
||||
|
||||
; Check that the need for stride==1 check prevents vectorizing a loop under opt
|
||||
; for size.
|
||||
; CHECK-LABEL: @scev4stride1
|
||||
; CHECK-NOT: vector.scevcheck
|
||||
; CHECK-NOT: vector.body:
|
||||
; CHECK-LABEL: for.body:
|
||||
; Check that a loop under opt-for-size is vectorized, w/o checking for
|
||||
; stride==1.
|
||||
; NOTE: Some assertions have been autogenerated by utils/update_test_checks.py
|
||||
define void @scev4stride1(i32* noalias nocapture %a, i32* noalias nocapture readonly %b, i32 %k) #0 {
|
||||
; CHECK-LABEL: @scev4stride1(
|
||||
; CHECK-NEXT: for.body.preheader:
|
||||
; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
|
||||
; CHECK: vector.ph:
|
||||
; CHECK-NEXT: [[BROADCAST_SPLATINSERT:%.*]] = insertelement <4 x i32> undef, i32 [[K:%.*]], i32 0
|
||||
; CHECK-NEXT: [[BROADCAST_SPLAT:%.*]] = shufflevector <4 x i32> [[BROADCAST_SPLATINSERT]], <4 x i32> undef, <4 x i32> zeroinitializer
|
||||
; 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: [[TMP0:%.*]] = add i32 [[INDEX]], 0
|
||||
; CHECK-NEXT: [[TMP1:%.*]] = add i32 [[INDEX]], 1
|
||||
; CHECK-NEXT: [[TMP2:%.*]] = add i32 [[INDEX]], 2
|
||||
; CHECK-NEXT: [[TMP3:%.*]] = add i32 [[INDEX]], 3
|
||||
; CHECK-NEXT: [[TMP4:%.*]] = mul nsw <4 x i32> [[VEC_IND]], [[BROADCAST_SPLAT]]
|
||||
; CHECK-NEXT: [[TMP5:%.*]] = extractelement <4 x i32> [[TMP4]], i32 0
|
||||
; CHECK-NEXT: [[TMP6:%.*]] = getelementptr inbounds i32, i32* [[B:%.*]], i32 [[TMP5]]
|
||||
; CHECK-NEXT: [[TMP7:%.*]] = extractelement <4 x i32> [[TMP4]], i32 1
|
||||
; CHECK-NEXT: [[TMP8:%.*]] = getelementptr inbounds i32, i32* [[B]], i32 [[TMP7]]
|
||||
; CHECK-NEXT: [[TMP9:%.*]] = extractelement <4 x i32> [[TMP4]], i32 2
|
||||
; CHECK-NEXT: [[TMP10:%.*]] = getelementptr inbounds i32, i32* [[B]], i32 [[TMP9]]
|
||||
; CHECK-NEXT: [[TMP11:%.*]] = extractelement <4 x i32> [[TMP4]], i32 3
|
||||
; CHECK-NEXT: [[TMP12:%.*]] = getelementptr inbounds i32, i32* [[B]], i32 [[TMP11]]
|
||||
; CHECK-NEXT: [[TMP13:%.*]] = load i32, i32* [[TMP6]], align 4
|
||||
; CHECK-NEXT: [[TMP14:%.*]] = load i32, i32* [[TMP8]], align 4
|
||||
; CHECK-NEXT: [[TMP15:%.*]] = load i32, i32* [[TMP10]], align 4
|
||||
; CHECK-NEXT: [[TMP16:%.*]] = load i32, i32* [[TMP12]], align 4
|
||||
; CHECK-NEXT: [[TMP17:%.*]] = insertelement <4 x i32> undef, i32 [[TMP13]], i32 0
|
||||
; CHECK-NEXT: [[TMP18:%.*]] = insertelement <4 x i32> [[TMP17]], i32 [[TMP14]], i32 1
|
||||
; CHECK-NEXT: [[TMP19:%.*]] = insertelement <4 x i32> [[TMP18]], i32 [[TMP15]], i32 2
|
||||
; CHECK-NEXT: [[TMP20:%.*]] = insertelement <4 x i32> [[TMP19]], i32 [[TMP16]], i32 3
|
||||
; CHECK-NEXT: [[TMP21:%.*]] = getelementptr inbounds i32, i32* [[A:%.*]], i32 [[TMP0]]
|
||||
; CHECK-NEXT: [[TMP22:%.*]] = getelementptr inbounds i32, i32* [[TMP21]], i32 0
|
||||
; CHECK-NEXT: [[TMP23:%.*]] = bitcast i32* [[TMP22]] to <4 x i32>*
|
||||
; CHECK-NEXT: store <4 x i32> [[TMP20]], <4 x i32>* [[TMP23]], 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: [[TMP24:%.*]] = icmp eq i32 [[INDEX_NEXT]], 1024
|
||||
; CHECK-NEXT: br i1 [[TMP24]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop !0
|
||||
; CHECK: middle.block:
|
||||
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i32 1024, 1024
|
||||
; CHECK-NEXT: br i1 [[CMP_N]], label [[FOR_END_LOOPEXIT:%.*]], label [[SCALAR_PH]]
|
||||
; CHECK: scalar.ph:
|
||||
; CHECK: for.body:
|
||||
; CHECK: for.end.loopexit:
|
||||
; CHECK-NEXT: ret void
|
||||
;
|
||||
for.body.preheader:
|
||||
br label %for.body
|
||||
|
||||
|
||||
@ -162,9 +162,9 @@ loopexit:
|
||||
|
||||
define dso_local void @forced_optsize(i64* noalias nocapture readonly %x_p, i64* noalias nocapture readonly %y_p, i64* noalias nocapture %z_p) minsize optsize {
|
||||
;
|
||||
; FORCED_OPTSIZE: remark: <unknown>:0:0: Code-size may be reduced by not forcing vectorization, or by source-code modifications eliminating the need for runtime checks (e.g., adding 'restrict').
|
||||
; FORCED_OPTSIZE: remark: <unknown>:0:0: loop not vectorized: runtime pointer checks needed. Enable vectorization of this loop with '#pragma clang loop vectorize(enable)' when compiling with -Os/-Oz
|
||||
; FORCED_OPTSIZE-LABEL: @forced_optsize(
|
||||
; FORCED_OPTSIZE: vector.body:
|
||||
; FORCED_OPTSIZE-NOT: vector.body:
|
||||
;
|
||||
entry:
|
||||
br label %for.body
|
||||
|
||||
Loading…
Reference in New Issue
Block a user