diff options
Diffstat (limited to 'include/llvm')
| -rw-r--r-- | include/llvm/Analysis/ScalarEvolutionExpander.h | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/include/llvm/Analysis/ScalarEvolutionExpander.h b/include/llvm/Analysis/ScalarEvolutionExpander.h index f7bab30836..1080580c96 100644 --- a/include/llvm/Analysis/ScalarEvolutionExpander.h +++ b/include/llvm/Analysis/ScalarEvolutionExpander.h @@ -72,6 +72,10 @@ namespace llvm { typedef IRBuilder<true, TargetFolder> BuilderType; BuilderType Builder; +#ifndef NDEBUG + const char *DebugType; +#endif + friend struct SCEVVisitor<SCEVExpander, Value*>; public: @@ -79,7 +83,15 @@ namespace llvm { explicit SCEVExpander(ScalarEvolution &se, const char *name) : SE(se), IVName(name), IVIncInsertLoop(0), IVIncInsertPos(0), CanonicalMode(true), LSRMode(false), - Builder(se.getContext(), TargetFolder(se.TD)) {} + Builder(se.getContext(), TargetFolder(se.TD)) { +#ifndef NDEBUG + DebugType = ""; +#endif + } + +#ifndef NDEBUG + void setDebugType(const char* s) { DebugType = s; } +#endif /// clear - Erase the contents of the InsertedExpressions map so that users /// trying to expand the same expression into multiple BasicBlocks or @@ -96,6 +108,15 @@ namespace llvm { /// starts at zero and steps by one on each iteration. PHINode *getOrInsertCanonicalInductionVariable(const Loop *L, Type *Ty); + /// hoistStep - Utility for hoisting an IV increment. + static bool hoistStep(Instruction *IncV, Instruction *InsertPos, + const DominatorTree *DT); + + /// replaceCongruentIVs - replace congruent phis with their most canonical + /// representative. Return the number of phis eliminated. + unsigned replaceCongruentIVs(Loop *L, const DominatorTree *DT, + SmallVectorImpl<WeakVH> &DeadInsts); + /// expandCodeFor - Insert code to directly compute the specified SCEV /// expression into the program. The inserted code is inserted into the /// specified block. |