[PATCH] D11225: AMDPGU/SI: Use AssertAnd node to mask high bit for scratch offsets

[Matt Arsenault]

arsenm added inline comments.

================
Comment at: lib/Target/AMDGPU/SIISelLowering.cpp:824-826
@@ +823,5 @@
+  //
+  // It may be theoretically possible to construct a system that makes
+  // 128 GB of memory accessible to the GPU, but for now we assume such
+  // machines do not exist.
+  //
----------------
I think this should be wrapped under a subtarget feature (that defaults to on) and use a more conservative assumption if off. For a name idea -huge-memory-support or something like that


http://reviews.llvm.org/D11225