6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-12-14 11:32:34 +00:00
Code Issues Projects Releases Wiki Activity

Revert r231103, "FullDependenceAnalysis: Avoid using the (deprecated in C++11) copy ctor"

Browse Source 
It is miscompiled on msc18.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@231335 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
NAKAMURA Takumi 2015-03-05 01:25:12 +00:00
parent c1899b151e
commit 71fa4016bb
1 changed files with 23 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

45
lib/Analysis/DependenceAnalysis.cpp
View File

@ -3334,8 +3334,7 @@ DependenceAnalysis::depends(Instruction *Src, Instruction *Dst,
DEBUG(dbgs() << " common nesting levels = " << CommonLevels << "\n");
DEBUG(dbgs() << " maximum nesting levels = " << MaxLevels << "\n");
auto Result = llvm::make_unique<FullDependence>(
Src, Dst, PossiblyLoopIndependent, CommonLevels);
FullDependence Result(Src, Dst, PossiblyLoopIndependent, CommonLevels);
++TotalArrayPairs;
// See if there are GEPs we can use.
@ -3473,7 +3472,7 @@ DependenceAnalysis::depends(Instruction *Src, Instruction *Dst,
collectCommonLoops(Pair[SI].Dst,
LI->getLoopFor(Dst->getParent()),
Pair[SI].Loops);
Result->Consistent = false;
Result.Consistent = false;
}
else if (Pair[SI].Classification == Subscript::ZIV) {
// always separable
@ -3520,26 +3519,26 @@ DependenceAnalysis::depends(Instruction *Src, Instruction *Dst,
switch (Pair[SI].Classification) {
case Subscript::ZIV:
DEBUG(dbgs() << ", ZIV\n");
if (testZIV(Pair[SI].Src, Pair[SI].Dst, *Result))
if (testZIV(Pair[SI].Src, Pair[SI].Dst, Result))
return nullptr;
break;
case Subscript::SIV: {
DEBUG(dbgs() << ", SIV\n");
unsigned Level;
const SCEV *SplitIter = nullptr;
if (testSIV(Pair[SI].Src, Pair[SI].Dst, Level, *Result, NewConstraint,
SplitIter))
if (testSIV(Pair[SI].Src, Pair[SI].Dst, Level,
Result, NewConstraint, SplitIter))
return nullptr;
break;
}
case Subscript::RDIV:
DEBUG(dbgs() << ", RDIV\n");
if (testRDIV(Pair[SI].Src, Pair[SI].Dst, *Result))
if (testRDIV(Pair[SI].Src, Pair[SI].Dst, Result))
return nullptr;
break;
case Subscript::MIV:
DEBUG(dbgs() << ", MIV\n");
if (testMIV(Pair[SI].Src, Pair[SI].Dst, Pair[SI].Loops, *Result))
if (testMIV(Pair[SI].Src, Pair[SI].Dst, Pair[SI].Loops, Result))
return nullptr;
break;
default:
@ -3576,8 +3575,8 @@ DependenceAnalysis::depends(Instruction *Src, Instruction *Dst,
unsigned Level;
const SCEV *SplitIter = nullptr;
DEBUG(dbgs() << "SIV\n");
if (testSIV(Pair[SJ].Src, Pair[SJ].Dst, Level, *Result, NewConstraint,
SplitIter))
if (testSIV(Pair[SJ].Src, Pair[SJ].Dst, Level,
Result, NewConstraint, SplitIter))
return nullptr;
ConstrainedLevels.set(Level);
if (intersectConstraints(&Constraints[Level], &NewConstraint)) {
@ -3598,7 +3597,7 @@ DependenceAnalysis::depends(Instruction *Src, Instruction *Dst,
// SJ is an MIV subscript that's part of the current coupled group
DEBUG(dbgs() << "\tSJ = " << SJ << "\n");
if (propagate(Pair[SJ].Src, Pair[SJ].Dst, Pair[SJ].Loops,
Constraints, Result->Consistent)) {
Constraints, Result.Consistent)) {
DEBUG(dbgs() << "\t Changed\n");
++DeltaPropagations;
Pair[SJ].Classification =
@ -3608,7 +3607,7 @@ DependenceAnalysis::depends(Instruction *Src, Instruction *Dst,
switch (Pair[SJ].Classification) {
case Subscript::ZIV:
DEBUG(dbgs() << "ZIV\n");
if (testZIV(Pair[SJ].Src, Pair[SJ].Dst, *Result))
if (testZIV(Pair[SJ].Src, Pair[SJ].Dst, Result))
return nullptr;
Mivs.reset(SJ);
break;
@ -3631,7 +3630,7 @@ DependenceAnalysis::depends(Instruction *Src, Instruction *Dst,
for (int SJ = Mivs.find_first(); SJ >= 0; SJ = Mivs.find_next(SJ)) {
if (Pair[SJ].Classification == Subscript::RDIV) {
DEBUG(dbgs() << "RDIV test\n");
if (testRDIV(Pair[SJ].Src, Pair[SJ].Dst, *Result))
if (testRDIV(Pair[SJ].Src, Pair[SJ].Dst, Result))
return nullptr;
// I don't yet understand how to propagate RDIV results
Mivs.reset(SJ);
@ -3644,19 +3643,19 @@ DependenceAnalysis::depends(Instruction *Src, Instruction *Dst,
for (int SJ = Mivs.find_first(); SJ >= 0; SJ = Mivs.find_next(SJ)) {
if (Pair[SJ].Classification == Subscript::MIV) {
DEBUG(dbgs() << "MIV test\n");
if (testMIV(Pair[SJ].Src, Pair[SJ].Dst, Pair[SJ].Loops, *Result))
if (testMIV(Pair[SJ].Src, Pair[SJ].Dst, Pair[SJ].Loops, Result))
return nullptr;
}
else
llvm_unreachable("expected only MIV subscripts at this point");
}
// update Result->DV from constraint vector
// update Result.DV from constraint vector
DEBUG(dbgs() << " updating\n");
for (int SJ = ConstrainedLevels.find_first();
SJ >= 0; SJ = ConstrainedLevels.find_next(SJ)) {
updateDirection(Result->DV[SJ - 1], Constraints[SJ]);
if (Result->DV[SJ - 1].Direction == Dependence::DVEntry::NONE)
updateDirection(Result.DV[SJ - 1], Constraints[SJ]);
if (Result.DV[SJ - 1].Direction == Dependence::DVEntry::NONE)
return nullptr;
}
}
@ -3668,15 +3667,15 @@ DependenceAnalysis::depends(Instruction *Src, Instruction *Dst,
CompleteLoops |= Pair[SI].Loops;
for (unsigned II = 1; II <= CommonLevels; ++II)
if (CompleteLoops[II])
Result->DV[II - 1].Scalar = false;
Result.DV[II - 1].Scalar = false;
if (PossiblyLoopIndependent) {
// Make sure the LoopIndependent flag is set correctly.
// All directions must include equal, otherwise no
// loop-independent dependence is possible.
for (unsigned II = 1; II <= CommonLevels; ++II) {
if (!(Result->getDirection(II) & Dependence::DVEntry::EQ)) {
Result->LoopIndependent = false;
if (!(Result.getDirection(II) & Dependence::DVEntry::EQ)) {
Result.LoopIndependent = false;
break;
}
}
@ -3686,7 +3685,7 @@ DependenceAnalysis::depends(Instruction *Src, Instruction *Dst,
// loop-independent dependence possible, then no dependence exists.
bool AllEqual = true;
for (unsigned II = 1; II <= CommonLevels; ++II) {
if (Result->getDirection(II) != Dependence::DVEntry::EQ) {
if (Result.getDirection(II) != Dependence::DVEntry::EQ) {
AllEqual = false;
break;
}
@ -3695,7 +3694,9 @@ DependenceAnalysis::depends(Instruction *Src, Instruction *Dst,
return nullptr;
}
return std::move(Result);
auto Final = make_unique<FullDependence>(Result);
Result.DV = nullptr;
return std::move(Final);
}