AMDGPU: Don't use MUBUF vaddr if address may overflow

Effectively revert r263964. Before we would not
allow this if vaddr was not known to be positive.

llvm-svn: 318240

1 files changed, 5 insertions, 0 deletions

diff --git a/llvm/lib/Target/AMDGPU/AMDGPUSubtarget.h b/llvm/lib/Target/AMDGPU/AMDGPUSubtarget.h
index 460ff82efc5..f9b400cfe1b 100644
--- a/llvm/lib/Target/AMDGPU/AMDGPUSubtarget.h
+++ b/llvm/lib/Target/AMDGPU/AMDGPUSubtarget.h
@@ -130,6 +130,7 @@ protected:
   bool DebuggerEmitPrologue;
 
   // Used as options.
+  bool EnableHugePrivateBuffer;
   bool EnableVGPRSpilling;
   bool EnablePromoteAlloca;
   bool EnableLoadStoreOpt;
@@ -351,6 +352,10 @@ public:
     return isAmdHsaOS() ? TrapHandlerAbiHsa : TrapHandlerAbiNone;
   }
 
+  bool enableHugePrivateBuffer() const {
+    return EnableHugePrivateBuffer;
+  }
+
   bool isPromoteAllocaEnabled() const {
     return EnablePromoteAlloca;
   }