================
@@ -51,86 +59,66 @@ char NVPTXLowerAlloca::ID = 1;
INITIALIZE_PASS(NVPTXLowerAlloca, "nvptx-lower-alloca", "Lower Alloca", false,
false)
-//
=============================================================================
-// Main function for this pass.
-//
=============================================================================
-bool NVPTXLowerAlloca::runOnFunction(Function &F) {
- if (skipFunction(F))
- return false;
+bool NVPTXLowerAlloca::runOnModule(Module &M) {
+ bool Changed = changeDataLayout(M);
+ for (auto &F : M)
+ Changed |= lowerFunctionAllocas(F);
+ return Changed;
+}
- bool Changed = false;
+bool NVPTXLowerAlloca::lowerFunctionAllocas(Function &F) {
+ SmallVector<AllocaInst *, 16> Allocas;
for (auto &BB : F)
- for (auto &I : BB) {
- if (auto allocaInst = dyn_cast<AllocaInst>(&I)) {
- Changed = true;
+ for (auto &I : BB)
+ if (auto *Alloca = dyn_cast<AllocaInst>(&I))
+ if (Alloca->getAddressSpace() != ADDRESS_SPACE_LOCAL)
+ Allocas.push_back(Alloca);
+
+ if (Allocas.empty())
+ return false;
- PointerType *AllocInstPtrTy =
- cast<PointerType>(allocaInst->getType()->getScalarType());
- unsigned AllocAddrSpace = AllocInstPtrTy->getAddressSpace();
- assert((AllocAddrSpace == ADDRESS_SPACE_GENERIC ||
- AllocAddrSpace == ADDRESS_SPACE_LOCAL) &&
- "AllocaInst can only be in Generic or Local address space for "
- "NVPTX.");
+ for (AllocaInst *Alloca : Allocas) {
+ auto *NewAlloca = new AllocaInst(
+ Alloca->getAllocatedType(), ADDRESS_SPACE_LOCAL,
Alloca->getArraySize(),
+ Alloca->getAlign(), Alloca->getName());
+ auto *Cast = new AddrSpaceCastInst(
+ NewAlloca,
+ PointerType::get(Alloca->getAllocatedType()->getContext(),
+ ADDRESS_SPACE_GENERIC),
+ "");
----------------
AlexMaclean wrote:
Nit: can we use an IRBuilder here?
https://github.com/llvm/llvm-project/pull/154814
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