/// breaks and the false values expresses continue states.
class StructurizeCFG : public RegionPass {
bool SkipUniformRegions;
- DivergenceAnalysis *DA;
Type *Boolean;
ConstantInt *BoolTrue;
void rebuildSSA();
- bool hasOnlyUniformBranches(const Region *R);
-
public:
static char ID;
}
}
-bool StructurizeCFG::hasOnlyUniformBranches(const Region *R) {
+static bool hasOnlyUniformBranches(const Region *R,
+ const DivergenceAnalysis &DA) {
for (const BasicBlock *BB : R->blocks()) {
const BranchInst *Br = dyn_cast<BranchInst>(BB->getTerminator());
if (!Br || !Br->isConditional())
continue;
- if (!DA->isUniform(Br->getCondition()))
+ if (!DA.isUniform(Br->getCondition()))
return false;
DEBUG(dbgs() << "BB: " << BB->getName() << " has uniform terminator\n");
}
return false;
if (SkipUniformRegions) {
- DA = &getAnalysis<DivergenceAnalysis>();
// TODO: We could probably be smarter here with how we handle sub-regions.
- if (hasOnlyUniformBranches(R)) {
+ auto &DA = getAnalysis<DivergenceAnalysis>();
+ if (hasOnlyUniformBranches(R, DA)) {
DEBUG(dbgs() << "Skipping region with uniform control flow: " << *R << '\n');
// Mark all direct child block terminators as having been treated as