sfantao added inline comments.
================
Comment at: lib/CodeGen/CGOpenMPRuntime.cpp:3044-3054
@@ +3043,13 @@
+
+ if (auto *VAT = dyn_cast<VariableArrayType>(ElementType.getTypePtr())) {
+ auto VATInfo = CGF.getVLASize(VAT);
+ Size = llvm::ConstantInt::get(
+ CGM.SizeTy,
+ CGM.getContext().getTypeSizeInChars(VATInfo.second).getQuantity());
+ Size = CGF.Builder.CreateNUWMul(Size, VATInfo.first);
+ } else {
+ uint64_t ElementTypeSize =
+ CGM.getContext().getTypeSizeInChars(ElementType).getQuantity();
+ Size = llvm::ConstantInt::get(CGM.SizeTy, ElementTypeSize);
+ }
+
----------------
ABataev wrote:
> You were using uint64_t ASTContext::getTypeSize(ElementType), but I'm talking
> about static llvm::Value *getTypeSize(CGF, ElementType), which is defined in
> CGOpenMPRuntime.cpp. It does exactly the same thing you're doing in this part
> of code.
Got it! Done!
Just a related question: isn't the loop in getTypeSize() doing the same thing
as CGF.getVLASize()? Just wondering if that should be reused in there.
Thanks!
================
Comment at: lib/CodeGen/CGOpenMPRuntime.cpp:3082-3128
@@ +3081,49 @@
+
+ // Generate the code to launch the target region. The pattern is the
+ // following:
+ //
+ // ...
+ // br IfCond (if any), omp_offload, omp_offload_fail
+ //
+ // omp_offload.try:
+ // ; create arrays for offloading
+ // error = __tgt_target(...)
+ // br error, omp_offload_fail, omp_offload_end
+ //
+ // omp_offload.fail:
+ // host_version(...)
+ //
+ // omp_offload.end:
+ // ...
+ //
+
+ auto OffloadTryBlock = CGF.createBasicBlock("omp_offload.try");
+ auto OffloadFailBlock = CGF.createBasicBlock("omp_offload.fail");
+ auto ContBlock = CGF.createBasicBlock("omp_offload.end");
+
+ if (IfCond)
+ CGF.EmitBranchOnBoolExpr(IfCond, OffloadTryBlock, OffloadFailBlock,
+ /*TrueCount=*/0);
+
+ CGF.EmitBlock(OffloadTryBlock);
+
+ unsigned PointerNumVal = BasePointers.size();
+ llvm::Value *PointerNum = CGF.Builder.getInt32(PointerNumVal);
+ llvm::Value *BasePointersArray;
+ llvm::Value *PointersArray;
+ llvm::Value *SizesArray;
+ llvm::Value *MapTypesArray;
+
+ if (PointerNumVal) {
+ llvm::APInt PointerNumAP(32, PointerNumVal, /*isSigned=*/true);
+ QualType PointerArrayType = CGF.getContext().getConstantArrayType(
+ CGF.getContext().VoidPtrTy, PointerNumAP, ArrayType::Normal,
+ /*IndexTypeQuals=*/0);
+
+ BasePointersArray =
+ CGF.CreateMemTemp(PointerArrayType, ".offload_baseptrs").getPointer();
+ PointersArray =
+ CGF.CreateMemTemp(PointerArrayType, ".offload_ptrs").getPointer();
+
+ // If we don't have any VLA types, we can use a constant array for the map
+ // sizes, otherwise we need to fill up the arrays as we do for the
pointers.
----------------
ABataev wrote:
> You can emit an empty else block, it will be optimized by backend
In the new diff I now use a temp variable to keep the error code and try to
reuse the if clause current logic. Let me know if this along the lines you want
it to be.
http://reviews.llvm.org/D12871
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