================
@@ -16,105 +16,50 @@
//===----------------------------------------------------------------------===//
#include "polly/CodePreparation.h"
-#include "polly/LinkAllPasses.h"
#include "polly/Support/ScopHelper.h"
#include "llvm/Analysis/DominanceFrontier.h"
#include "llvm/Analysis/LoopInfo.h"
#include "llvm/Analysis/RegionInfo.h"
#include "llvm/Analysis/ScalarEvolution.h"
-#include "llvm/InitializePasses.h"
using namespace llvm;
using namespace polly;
-namespace {
-
-/// Prepare the IR for the scop detection.
-///
-class CodePreparation final : public FunctionPass {
- CodePreparation(const CodePreparation &) = delete;
- const CodePreparation &operator=(const CodePreparation &) = delete;
-
- LoopInfo *LI;
- ScalarEvolution *SE;
-
- void clear();
-
-public:
- static char ID;
-
- explicit CodePreparation() : FunctionPass(ID) {}
- ~CodePreparation();
-
- /// @name FunctionPass interface.
- //@{
- void getAnalysisUsage(AnalysisUsage &AU) const override;
- void releaseMemory() override;
- bool runOnFunction(Function &F) override;
- void print(raw_ostream &OS, const Module *) const override;
- //@}
-};
-} // namespace
-
-PreservedAnalyses CodePreparationPass::run(Function &F,
- FunctionAnalysisManager &FAM) {
-
+static bool runCodePreprationImpl(Function &F, DominatorTree *DT, LoopInfo *LI,
+ RegionInfo *RI) {
// Find first non-alloca instruction. Every basic block has a non-alloca
// instruction, as every well formed basic block has a terminator.
auto &EntryBlock = F.getEntryBlock();
BasicBlock::iterator I = EntryBlock.begin();
while (isa<AllocaInst>(I))
++I;
- auto &DT = FAM.getResult<DominatorTreeAnalysis>(F);
- auto &LI = FAM.getResult<LoopAnalysis>(F);
+ // Abort if not necessary to split
+ if (I->isTerminator() && isa<BranchInst>(I) &&
+ cast<BranchInst>(I)->isUnconditional())
+ return false;
// splitBlock updates DT, LI and RI.
- splitEntryBlockForAlloca(&EntryBlock, &DT, &LI, nullptr);
----------------
kartcq wrote:
Can we please move CodePreparation pass changes to separate commit.
This will make the these changes more trackable.
https://github.com/llvm/llvm-project/pull/125442
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