SelectionDAG: Use correct pointer size when lowering function arguments v2

This adds minimal support to the SelectionDAG for handling address spaces
with different pointer sizes.  The SelectionDAG should now correctly
lower pointer function arguments to the correct size as well as generate
the correct code when lowering getelementptr.

This patch also updates the R600 DataLayout to use 32-bit pointers for
the local address space.

v2:
  - Add more helper functions to TargetLoweringBase
  - Use CHECK-LABEL for tests

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189221 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 13 insertions, 0 deletions

diff --git a/lib/CodeGen/TargetLoweringBase.cpp b/lib/CodeGen/TargetLoweringBase.cpp
index a2ea35e64a..7d28ed4612 100644
--- a/lib/CodeGen/TargetLoweringBase.cpp
+++ b/lib/CodeGen/TargetLoweringBase.cpp
@@ -767,6 +767,19 @@ void TargetLoweringBase::initActions() {
   setOperationAction(ISD::DEBUGTRAP, MVT::Other, Expand);
 }
 
+MVT TargetLoweringBase::getPointerTy(uint32_t AS) const {
+  return MVT::getIntegerVT(getPointerSizeInBits(AS));
+}
+
+unsigned TargetLoweringBase::getPointerSizeInBits(uint32_t AS) const {
+  return TD->getPointerSizeInBits(AS);
+}
+
+unsigned TargetLoweringBase::getPointerTypeSizeInBits(Type *Ty) const {
+  assert(Ty->isPointerTy());
+  return getPointerSizeInBits(Ty->getPointerAddressSpace());
+}
+
 MVT TargetLoweringBase::getScalarShiftAmountTy(EVT LHSTy) const {
   return MVT::getIntegerVT(8*TD->getPointerSize(0));
 }