6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-06-26 07:24:25 +00:00
Code Issues Projects Releases Wiki Activity

Put all IVUsers in the processed set. Allow querying IVUsers with isIVUserOrOperand.

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147686 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Andrew Trick
2012-01-06 21:41:55 +00:00
parent 59ecaae7b6
commit 260bf5364e
2 changed files with 10 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
include/llvm/Analysis/IVUsers.h
View File

@ -166,6 +166,10 @@ public:
const_iterator end() const { return IVUses.end(); } const_iterator end() const { return IVUses.end(); }
bool empty() const { return IVUses.empty(); } bool empty() const { return IVUses.empty(); }
bool isIVUserOrOperand(Instruction *Inst) const {
return Processed.count(Inst);
}
void print(raw_ostream &OS, const Module* = 0) const; void print(raw_ostream &OS, const Module* = 0) const;
/// dump - This method is used for debugging. /// dump - This method is used for debugging.

9
lib/Analysis/IVUsers.cpp
View File

@ -83,6 +83,11 @@ static bool isInteresting(const SCEV *S, const Instruction *I, const Loop *L,
/// reducible SCEV, recursively add its users to the IVUsesByStride set and /// reducible SCEV, recursively add its users to the IVUsesByStride set and
/// return true. Otherwise, return false. /// return true. Otherwise, return false.
bool IVUsers::AddUsersIfInteresting(Instruction *I) { bool IVUsers::AddUsersIfInteresting(Instruction *I) {
// Add this IV user to the Processed set before returning false to ensure that
// all IV users are members of the set. See IVUsers::isIVUserOrOperand.
if (!Processed.insert(I))
return true; // Instruction already handled.
if (!SE->isSCEVable(I->getType())) if (!SE->isSCEVable(I->getType()))
return false; // Void and FP expressions cannot be reduced. return false; // Void and FP expressions cannot be reduced.
@ -93,9 +98,6 @@ bool IVUsers::AddUsersIfInteresting(Instruction *I) {
if (Width > 64 || (TD && !TD->isLegalInteger(Width))) if (Width > 64 || (TD && !TD->isLegalInteger(Width)))
return false; return false;
if (!Processed.insert(I))
return true; // Instruction already handled.
// Get the symbolic expression for this instruction. // Get the symbolic expression for this instruction.
const SCEV *ISE = SE->getSCEV(I); const SCEV *ISE = SE->getSCEV(I);
@ -268,6 +270,7 @@ void IVStrideUse::transformToPostInc(const Loop *L) {
void IVStrideUse::deleted() { void IVStrideUse::deleted() {
// Remove this user from the list. // Remove this user from the list.
Parent->Processed.erase(this->getUser());
Parent->IVUses.erase(this); Parent->IVUses.erase(this);
// this now dangles! // this now dangles!
} }