<div dir="auto">Thanks!</div><div class="gmail_extra"><br><div class="gmail_quote">On Nov 27, 2017 5:25 PM, "Rafael Espindola via llvm-commits" <<a href="mailto:llvm-commits@lists.llvm.org">llvm-commits@lists.llvm.org</a>> wrote:<br type="attribution"><blockquote class="quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Author: rafael<br>
Date: Mon Nov 27 17:25:38 2017<br>
New Revision: 319131<br>
<br>
URL: <a href="http://llvm.org/viewvc/llvm-project?rev=319131&view=rev" rel="noreferrer" target="_blank">http://llvm.org/viewvc/llvm-<wbr>project?rev=319131&view=rev</a><br>
Log:<br>
This reverts commit r319096 and r319097.<br>
<br>
Revert "[SROA] Propagate !range metadata when moving loads."<br>
Revert "[Mem2Reg] Clang-format unformatted parts of this file. NFCI."<br>
<br>
Davide says they broke a bot.<br>
<br>
Modified:<br>
llvm/trunk/lib/Transforms/<wbr>Scalar/SROA.cpp<br>
llvm/trunk/lib/Transforms/<wbr>Utils/Local.cpp<br>
llvm/trunk/lib/Transforms/<wbr>Utils/PromoteMemoryToRegister.<wbr>cpp<br>
llvm/trunk/test/Transforms/<wbr>SROA/preserve-nonnull.ll<br>
<br>
Modified: llvm/trunk/lib/Transforms/<wbr>Scalar/SROA.cpp<br>
URL: <a href="http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Scalar/SROA.cpp?rev=319131&r1=319130&r2=319131&view=diff" rel="noreferrer" target="_blank">http://llvm.org/viewvc/llvm-<wbr>project/llvm/trunk/lib/<wbr>Transforms/Scalar/SROA.cpp?<wbr>rev=319131&r1=319130&r2=<wbr>319131&view=diff</a><br>
==============================<wbr>==============================<wbr>==================<br>
--- llvm/trunk/lib/Transforms/<wbr>Scalar/SROA.cpp (original)<br>
+++ llvm/trunk/lib/Transforms/<wbr>Scalar/SROA.cpp Mon Nov 27 17:25:38 2017<br>
@@ -2455,10 +2455,15 @@ private:<br>
// are different types, for example by mapping !nonnull metadata to<br>
// !range metadata by modeling the null pointer constant converted to the<br>
// integer type.<br>
+ // FIXME: Add support for range metadata here. Currently the utilities<br>
+ // for this don't propagate range metadata in trivial cases from one<br>
+ // integer load to another, don't handle non-addrspace-0 null pointers<br>
+ // correctly, and don't have any support for mapping ranges as the<br>
+ // integer type becomes winder or narrower.<br>
if (MDNode *N = LI.getMetadata(LLVMContext::<wbr>MD_nonnull))<br>
copyNonnullMetadata(LI, N, *NewLI);<br>
- if (MDNode *N = LI.getMetadata(LLVMContext::<wbr>MD_range))<br>
- copyRangeMetadata(DL, LI, N, *NewLI);<br>
+<br>
+ // Try to preserve nonnull metadata<br>
V = NewLI;<br>
<br>
// If this is an integer load past the end of the slice (which means the<br>
@@ -3649,7 +3654,7 @@ bool SROA::presplitLoadsAndStores(<wbr>Alloca<br>
PartPtrTy, BasePtr->getName() + "."),<br>
getAdjustedAlignment(LI, PartOffset, DL), /*IsVolatile*/ false,<br>
LI->getName());<br>
- PLoad->copyMetadata(*LI, LLVMContext::MD_mem_parallel_<wbr>loop_access);<br>
+ PLoad->copyMetadata(*LI, LLVMContext::MD_mem_parallel_<wbr>loop_access);<br>
<br>
// Append this load onto the list of split loads so we can find it later<br>
// to rewrite the stores.<br>
<br>
Modified: llvm/trunk/lib/Transforms/<wbr>Utils/Local.cpp<br>
URL: <a href="http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Utils/Local.cpp?rev=319131&r1=319130&r2=319131&view=diff" rel="noreferrer" target="_blank">http://llvm.org/viewvc/llvm-<wbr>project/llvm/trunk/lib/<wbr>Transforms/Utils/Local.cpp?<wbr>rev=319131&r1=319130&r2=<wbr>319131&view=diff</a><br>
==============================<wbr>==============================<wbr>==================<br>
--- llvm/trunk/lib/Transforms/<wbr>Utils/Local.cpp (original)<br>
+++ llvm/trunk/lib/Transforms/<wbr>Utils/Local.cpp Mon Nov 27 17:25:38 2017<br>
@@ -1947,24 +1947,18 @@ void llvm::copyNonnullMetadata(<wbr>const Loa<br>
void llvm::copyRangeMetadata(const DataLayout &DL, const LoadInst &OldLI,<br>
MDNode *N, LoadInst &NewLI) {<br>
auto *NewTy = NewLI.getType();<br>
- auto *OldTy = OldLI.getType();<br>
<br>
- if (DL.getTypeStoreSizeInBits(<wbr>NewTy) == DL.getTypeSizeInBits(OldTy) &&<br>
- NewTy->isIntegerTy()) {<br>
- // An integer with the same number of bits - give it the range<br>
- // metadata!.<br>
- NewLI.setMetadata(LLVMContext:<wbr>:MD_range, N);<br>
+ // Give up unless it is converted to a pointer where there is a single very<br>
+ // valuable mapping we can do reliably.<br>
+ // FIXME: It would be nice to propagate this in more ways, but the type<br>
+ // conversions make it hard.<br>
+ if (!NewTy->isPointerTy())<br>
return;<br>
- }<br>
<br>
- if (NewTy->isPointerTy()) {<br>
- // Try to convert the !range metadata to !nonnull metadata on the<br>
- // new pointer.<br>
- unsigned BitWidth = DL.getTypeSizeInBits(NewTy);<br>
- if (!<wbr>getConstantRangeFromMetadata(*<wbr>N).contains(APInt(BitWidth, 0))) {<br>
- MDNode *NN = MDNode::get(OldLI.getContext()<wbr>, None);<br>
- NewLI.setMetadata(LLVMContext:<wbr>:MD_nonnull, NN);<br>
- }<br>
+ unsigned BitWidth = DL.getTypeSizeInBits(NewTy);<br>
+ if (!<wbr>getConstantRangeFromMetadata(*<wbr>N).contains(APInt(BitWidth, 0))) {<br>
+ MDNode *NN = MDNode::get(OldLI.getContext()<wbr>, None);<br>
+ NewLI.setMetadata(LLVMContext:<wbr>:MD_nonnull, NN);<br>
}<br>
}<br>
<br>
<br>
Modified: llvm/trunk/lib/Transforms/<wbr>Utils/PromoteMemoryToRegister.<wbr>cpp<br>
URL: <a href="http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Utils/PromoteMemoryToRegister.cpp?rev=319131&r1=319130&r2=319131&view=diff" rel="noreferrer" target="_blank">http://llvm.org/viewvc/llvm-<wbr>project/llvm/trunk/lib/<wbr>Transforms/Utils/<wbr>PromoteMemoryToRegister.cpp?<wbr>rev=319131&r1=319130&r2=<wbr>319131&view=diff</a><br>
==============================<wbr>==============================<wbr>==================<br>
--- llvm/trunk/lib/Transforms/<wbr>Utils/PromoteMemoryToRegister.<wbr>cpp (original)<br>
+++ llvm/trunk/lib/Transforms/<wbr>Utils/PromoteMemoryToRegister.<wbr>cpp Mon Nov 27 17:25:38 2017<br>
@@ -17,7 +17,6 @@<br>
<br>
#include "llvm/ADT/ArrayRef.h"<br>
#include "llvm/ADT/DenseMap.h"<br>
-#include "llvm/ADT/Optional.h"<br>
#include "llvm/ADT/STLExtras.h"<br>
#include "llvm/ADT/SmallPtrSet.h"<br>
#include "llvm/ADT/SmallVector.h"<br>
@@ -49,7 +48,7 @@<br>
#include "llvm/Transforms/Utils/Local.<wbr>h"<br>
#include "llvm/Transforms/Utils/<wbr>PromoteMemToReg.h"<br>
#include <algorithm><br>
-<br>
+#include <cassert><br>
#include <iterator><br>
#include <utility><br>
#include <vector><br>
@@ -178,16 +177,6 @@ public:<br>
ValVector Values;<br>
};<br>
<br>
-/// \brief Semi-open interval of instructions that are guaranteed to<br>
-/// all execute if the first one does.<br>
-class GuaranteedExecutionRange {<br>
-public:<br>
- unsigned Start;<br>
- unsigned End;<br>
-<br>
- GuaranteedExecutionRange(<wbr>unsigned S, unsigned E) : Start(S), End(E) {}<br>
-};<br>
-<br>
/// \brief This assigns and keeps a per-bb relative ordering of load/store<br>
/// instructions in the block that directly load or store an alloca.<br>
///<br>
@@ -201,108 +190,14 @@ class LargeBlockInfo {<br>
/// the block.<br>
DenseMap<const Instruction *, unsigned> InstNumbers;<br>
<br>
- /// \brief For each basic block we track, keep track of the intervals<br>
- /// of instruction numbers of instructions that transfer control<br>
- /// to their successors, for propagating metadata.<br>
- DenseMap<const BasicBlock *,<br>
- Optional<SmallVector<<wbr>GuaranteedExecutionRange, 4>>><br>
- GuaranteedExecutionIntervals;<br>
-<br>
public:<br>
- /// This code looks for stores to allocas, and for loads both for<br>
- /// allocas and for transferring metadata.<br>
+<br>
+ /// This code only looks at accesses to allocas.<br>
static bool isInterestingInstruction(const Instruction *I) {<br>
- return isa<LoadInst>(I) ||<br>
+ return (isa<LoadInst>(I) && isa<AllocaInst>(I->getOperand(<wbr>0))) ||<br>
(isa<StoreInst>(I) && isa<AllocaInst>(I->getOperand(<wbr>1)));<br>
}<br>
<br>
- /// Compute the GuaranteedExecutionIntervals for a given BB.<br>
- ///<br>
- /// This is valid and remains valid as long as each interesting<br>
- /// instruction (see isInterestingInstruction) that<br>
- /// A) existed when this LBI was cleared<br>
- /// B) has not been deleted (deleting interesting instructions is fine)<br>
- /// are run in the same program executions and in the same order<br>
- /// as when this LBI was cleared.<br>
- ///<br>
- /// Because `PromoteMemoryToRegister` does not move memory loads at<br>
- /// all, this assumption is satisfied in this pass.<br>
- SmallVector<<wbr>GuaranteedExecutionRange, 4> computeGEI(const BasicBlock *BB) {<br>
- SmallVector<<wbr>GuaranteedExecutionRange, 4> GuaranteedExecutionIntervals;<br>
-<br>
- unsigned InstNo = 0;<br>
- bool InRange = false;<br>
- unsigned FirstInstInRange = 0;<br>
- for (const Instruction &BBI : *BB) {<br>
- if (<wbr>isGuaranteedToTransferExecutio<wbr>nToSuccessor(&BBI)) {<br>
- if (!InRange && isInterestingInstruction(&BBI)<wbr>) {<br>
- InRange = true;<br>
- FirstInstInRange = InstNo;<br>
- }<br>
- } else {<br>
- if (InRange) {<br>
- assert(FirstInstInRange < InstNo &&<br>
- "Can't push an empty range here.");<br>
- GuaranteedExecutionIntervals.<wbr>emplace_back(FirstInstInRange, InstNo);<br>
- }<br>
- InRange = false;<br>
- }<br>
-<br>
- if (isInterestingInstruction(&<wbr>BBI)) {<br>
- auto It = InstNumbers.find(&BBI);<br>
- assert(It != InstNumbers.end() && InstNo <= It->second &&<br>
- "missing number for interesting instruction");<br>
- InstNo = It->second + 1;<br>
- }<br>
- }<br>
-<br>
- if (InRange) {<br>
- assert(FirstInstInRange < InstNo && "Can't push an empty range here.");<br>
- GuaranteedExecutionIntervals.<wbr>emplace_back(FirstInstInRange, InstNo);<br>
- }<br>
-<br>
- return GuaranteedExecutionIntervals;<br>
- }<br>
-<br>
- /// Return true if, when CxtI executes, it is guaranteed that either<br>
- /// I had executed already or that I is guaranteed to be later executed.<br>
- ///<br>
- /// The useful property this guarantees is that if I exhibits undefined<br>
- /// behavior under some circumstances, then the whole program will exhibit<br>
- /// undefined behavior at CxtI.<br>
- bool isGuaranteedToBeExecuted(const Instruction *CxtI, const Instruction *I) {<br>
- const BasicBlock *BB = CxtI->getParent();<br>
-<br>
- if (BB != I->getParent()) {<br>
- // Instructions in different basic blocks, so control flow<br>
- // can diverge between them (we could track this with<br>
- // postdoms, but we don't bother).<br>
- return false;<br>
- }<br>
-<br>
- unsigned Index1 = getInstructionIndex(CxtI);<br>
- unsigned Index2 = getInstructionIndex(I);<br>
-<br>
- auto &BBGEI = GuaranteedExecutionIntervals[<wbr>BB];<br>
- if (!BBGEI.hasValue()) {<br>
- BBGEI.emplace(computeGEI(BB));<br>
- }<br>
-<br>
- // We want to check whether I and CxtI are in the same range. To do that,<br>
- // we notice that CxtI can only be in the first range R where<br>
- // CxtI.end < R.end. If we find that range using binary search,<br>
- // we can check whether I and CxtI are both in it.<br>
- GuaranteedExecutionRange Bound(Index1, Index1);<br>
- auto R = std::upper_bound(<br>
- BBGEI->begin(), BBGEI->end(), Bound,<br>
- [](GuaranteedExecutionRange I_, GuaranteedExecutionRange R) {<br>
- return I_.End < R.End;<br>
- });<br>
-<br>
- return R != BBGEI->end() && R->Start <= Index1 && Index1 < R->End &&<br>
- R->Start <= Index2 && Index2 < R->End;<br>
- }<br>
-<br>
/// Get or calculate the index of the specified instruction.<br>
unsigned getInstructionIndex(const Instruction *I) {<br>
assert(<wbr>isInterestingInstruction(I) &&<br>
@@ -318,11 +213,9 @@ public:<br>
// avoid gratuitus rescans.<br>
const BasicBlock *BB = I->getParent();<br>
unsigned InstNo = 0;<br>
- GuaranteedExecutionIntervals.<wbr>erase(BB);<br>
for (const Instruction &BBI : *BB)<br>
if (isInterestingInstruction(&<wbr>BBI))<br>
InstNumbers[&BBI] = InstNo++;<br>
-<br>
It = InstNumbers.find(I);<br>
<br>
assert(It != InstNumbers.end() && "Didn't insert instruction?");<br>
@@ -331,10 +224,7 @@ public:<br>
<br>
void deleteValue(const Instruction *I) { InstNumbers.erase(I); }<br>
<br>
- void clear() {<br>
- InstNumbers.clear();<br>
- GuaranteedExecutionIntervals.<wbr>clear();<br>
- }<br>
+ void clear() { InstNumbers.clear(); }<br>
};<br>
<br>
struct PromoteMem2Reg {<br>
@@ -412,7 +302,7 @@ private:<br>
const SmallPtrSetImpl<BasicBlock *> &DefBlocks,<br>
SmallPtrSetImpl<BasicBlock *> &LiveInBlocks);<br>
void RenamePass(BasicBlock *BB, BasicBlock *Pred,<br>
- RenamePassData::ValVector &IncVals, LargeBlockInfo &LBI,<br>
+ RenamePassData::ValVector &IncVals,<br>
std::vector<RenamePassData> &Worklist);<br>
bool QueuePhiNode(BasicBlock *BB, unsigned AllocaIdx, unsigned &Version);<br>
};<br>
@@ -431,29 +321,6 @@ static void addAssumeNonNull(AssumptionC<br>
AC->registerAssumption(CI);<br>
}<br>
<br>
-static void addAssumptionsFromMetadata(<wbr>LoadInst *LI, Value *ReplVal,<br>
- DominatorTree &DT, const DataLayout &DL,<br>
- LargeBlockInfo &LBI,<br>
- AssumptionCache *AC) {<br>
- if (LI->getMetadata(LLVMContext::<wbr>MD_nonnull) &&<br>
- !isKnownNonZero(ReplVal, DL, 0, AC, LI, &DT)) {<br>
- addAssumeNonNull(AC, LI);<br>
- }<br>
-<br>
- if (auto *N = LI->getMetadata(LLVMContext::<wbr>MD_range)) {<br>
- // Range metadata is harder to use as an assumption,<br>
- // so don't try to add one, but *do* try to copy<br>
- // the metadata to a load in the same BB.<br>
- if (LoadInst *NewLI = dyn_cast<LoadInst>(ReplVal)) {<br>
- DEBUG(dbgs() << "trying to move !range metadata from" << *LI << " to"<br>
- << *NewLI << "\n");<br>
- if (LBI.isGuaranteedToBeExecuted(<wbr>LI, NewLI)) {<br>
- copyRangeMetadata(DL, *LI, N, *NewLI);<br>
- }<br>
- }<br>
- }<br>
-}<br>
-<br>
static void removeLifetimeIntrinsicUsers(<wbr>AllocaInst *AI) {<br>
// Knowing that this alloca is promotable, we know that it's safe to kill all<br>
// instructions except for load and store.<br>
@@ -542,7 +409,9 @@ static bool rewriteSingleStoreAlloca(All<br>
// If the load was marked as nonnull we don't want to lose<br>
// that information when we erase this Load. So we preserve<br>
// it with an assume.<br>
- addAssumptionsFromMetadata(LI, ReplVal, DT, DL, LBI, AC);<br>
+ if (AC && LI->getMetadata(LLVMContext::<wbr>MD_nonnull) &&<br>
+ !isKnownNonZero(ReplVal, DL, 0, AC, LI, &DT))<br>
+ addAssumeNonNull(AC, LI);<br>
<br>
LI->replaceAllUsesWith(<wbr>ReplVal);<br>
LI->eraseFromParent();<br>
@@ -636,7 +505,9 @@ static bool promoteSingleBlockAlloca(All<br>
// Note, if the load was marked as nonnull we don't want to lose that<br>
// information when we erase it. So we preserve it with an assume.<br>
Value *ReplVal = std::prev(I)->second-><wbr>getOperand(0);<br>
- addAssumptionsFromMetadata(LI, ReplVal, DT, DL, LBI, AC);<br>
+ if (AC && LI->getMetadata(LLVMContext::<wbr>MD_nonnull) &&<br>
+ !isKnownNonZero(ReplVal, DL, 0, AC, LI, &DT))<br>
+ addAssumeNonNull(AC, LI);<br>
<br>
LI->replaceAllUsesWith(<wbr>ReplVal);<br>
}<br>
@@ -772,6 +643,7 @@ void PromoteMem2Reg::run() {<br>
<br>
if (Allocas.empty())<br>
return; // All of the allocas must have been trivial!<br>
+<br>
LBI.clear();<br>
<br>
// Set the incoming values for the basic block to be null values for all of<br>
@@ -789,10 +661,9 @@ void PromoteMem2Reg::run() {<br>
RenamePassData RPD = std::move(RenamePassWorkList.<wbr>back());<br>
RenamePassWorkList.pop_back();<br>
// RenamePass may add new worklist entries.<br>
- RenamePass(<a href="http://RPD.BB" rel="noreferrer" target="_blank">RPD.BB</a>, RPD.Pred, RPD.Values, LBI, RenamePassWorkList);<br>
+ RenamePass(<a href="http://RPD.BB" rel="noreferrer" target="_blank">RPD.BB</a>, RPD.Pred, RPD.Values, RenamePassWorkList);<br>
} while (!RenamePassWorkList.empty());<br>
<br>
- LBI.clear();<br>
// The renamer uses the Visited set to avoid infinite loops. Clear it now.<br>
Visited.clear();<br>
<br>
@@ -1004,7 +875,6 @@ bool PromoteMem2Reg::QueuePhiNode(<wbr>BasicB<br>
/// predecessor block Pred.<br>
void PromoteMem2Reg::RenamePass(<wbr>BasicBlock *BB, BasicBlock *Pred,<br>
RenamePassData::ValVector &IncomingVals,<br>
- LargeBlockInfo &LBI,<br>
std::vector<RenamePassData> &Worklist) {<br>
NextIteration:<br>
// If we are inserting any phi nodes into this BB, they will already be in the<br>
@@ -1071,12 +941,13 @@ NextIteration:<br>
// If the load was marked as nonnull we don't want to lose<br>
// that information when we erase this Load. So we preserve<br>
// it with an assume.<br>
- addAssumptionsFromMetadata(LI, V, DT, SQ.DL, LBI, AC);<br>
+ if (AC && LI->getMetadata(LLVMContext::<wbr>MD_nonnull) &&<br>
+ !isKnownNonZero(V, SQ.DL, 0, AC, LI, &DT))<br>
+ addAssumeNonNull(AC, LI);<br>
<br>
// Anything using the load now uses the current value.<br>
LI->replaceAllUsesWith(V);<br>
BB->getInstList().erase(LI);<br>
- LBI.deleteValue(LI);<br>
} else if (StoreInst *SI = dyn_cast<StoreInst>(I)) {<br>
// Delete this instruction and mark the name as the current holder of the<br>
// value<br>
@@ -1094,7 +965,6 @@ NextIteration:<br>
for (DbgInfoIntrinsic *DII : AllocaDbgDeclares[ai->second])<br>
ConvertDebugDeclareToDebugValu<wbr>e(DII, SI, DIB);<br>
BB->getInstList().erase(SI);<br>
- LBI.deleteValue(SI);<br>
}<br>
}<br>
<br>
<br>
Modified: llvm/trunk/test/Transforms/<wbr>SROA/preserve-nonnull.ll<br>
URL: <a href="http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/SROA/preserve-nonnull.ll?rev=319131&r1=319130&r2=319131&view=diff" rel="noreferrer" target="_blank">http://llvm.org/viewvc/llvm-<wbr>project/llvm/trunk/test/<wbr>Transforms/SROA/preserve-<wbr>nonnull.ll?rev=319131&r1=<wbr>319130&r2=319131&view=diff</a><br>
==============================<wbr>==============================<wbr>==================<br>
--- llvm/trunk/test/Transforms/<wbr>SROA/preserve-nonnull.ll (original)<br>
+++ llvm/trunk/test/Transforms/<wbr>SROA/preserve-nonnull.ll Mon Nov 27 17:25:38 2017<br>
@@ -3,8 +3,6 @@<br>
; Make sure that SROA doesn't lose nonnull metadata<br>
; on loads from allocas that get optimized out.<br>
<br>
-%pair = type { i64, [0 x i64], [1 x i64] }<br>
-<br>
declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture writeonly, i8* nocapture readonly, i64, i32, i1)<br>
<br>
; Check that we do basic propagation of nonnull when rewriting.<br>
@@ -44,23 +42,6 @@ entry:<br>
ret float* %ret<br>
}<br>
<br>
-; Make sure we propagate the !range attribute when we expand loads.<br>
-define i64 @propagate_range(%pair* dereferenceable(16)) {<br>
-; CHECK-LABEL: define i64 @propagate_range(<br>
-; CHECK-NEXT: start:<br>
-; CHECK-NEXT: %[[SROA_IDX:.*]] = getelementptr inbounds %pair<br>
-; CHECK-NEXT: %[[RESULT:.*]] = load i64, i64* %[[SROA_IDX]], align 8, !range !1<br>
-; CHECK: ret i64 %[[RESULT]]<br>
-start:<br>
- %a = alloca %pair<br>
- %1 = bitcast %pair* %0 to i8*<br>
- %2 = bitcast %pair* %a to i8*<br>
- call void @llvm.memcpy.p0i8.p0i8.i64(i8* %2, i8* %1, i64 16, i32 8, i1 false)<br>
- %3 = getelementptr inbounds %pair, %pair* %a, i32 0, i32 0<br>
- %4 = load i64, i64* %3, !range !1<br>
- ret i64 %4<br>
-}<br>
-<br>
; Make sure we properly handle the !nonnull attribute when we convert<br>
; a pointer load to an integer load.<br>
; FIXME: While this doesn't do anythnig actively harmful today, it really<br>
@@ -109,4 +90,3 @@ entry:<br>
}<br>
<br>
!0 = !{}<br>
-!1 = !{i64 0, i64 2}<br>
<br>
<br>
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</blockquote></div><br></div>