1 files changed, 49 insertions, 0 deletions
diff --git a/contrib/llvm-project/llvm/lib/Target/AMDGPU/AMDGPUInstrInfo.cpp b/contrib/llvm-project/llvm/lib/Target/AMDGPU/AMDGPUInstrInfo.cpp
new file mode 100644
index 000000000000..f2d62956e25b
--- /dev/null
+++ b/contrib/llvm-project/llvm/lib/Target/AMDGPU/AMDGPUInstrInfo.cpp
@@ -0,0 +1,49 @@
+//===-- AMDGPUInstrInfo.cpp - Base class for AMD GPU InstrInfo ------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+/// \file
+/// \brief Implementation of the TargetInstrInfo class that is common to all
+/// AMD GPUs.
+//
+//===----------------------------------------------------------------------===//
+
+#include "AMDGPUInstrInfo.h"
+#include "AMDGPU.h"
+#include "llvm/CodeGen/MachineMemOperand.h"
+#include "llvm/IR/Constants.h"
+#include "llvm/IR/Instruction.h"
+#include "llvm/IR/Value.h"
+
+using namespace llvm;
+
+// Pin the vtable to this file.
+//void AMDGPUInstrInfo::anchor() {}
+
+AMDGPUInstrInfo::AMDGPUInstrInfo(const GCNSubtarget &ST) { }
+
+
+// TODO: Should largely merge with AMDGPUTTIImpl::isSourceOfDivergence.
+bool AMDGPUInstrInfo::isUniformMMO(const MachineMemOperand *MMO) {
+  const Value *Ptr = MMO->getValue();
+  // UndefValue means this is a load of a kernel input.  These are uniform.
+  // Sometimes LDS instructions have constant pointers.
+  // If Ptr is null, then that means this mem operand contains a
+  // PseudoSourceValue like GOT.
+  if (!Ptr || isa<UndefValue>(Ptr) ||
+      isa<Constant>(Ptr) || isa<GlobalValue>(Ptr))
+    return true;
+
+  if (MMO->getAddrSpace() == AMDGPUAS::CONSTANT_ADDRESS_32BIT)
+    return true;
+
+  if (const Argument *Arg = dyn_cast<Argument>(Ptr))
+    return AMDGPU::isArgPassedInSGPR(Arg);
+
+  const Instruction *I = dyn_cast<Instruction>(Ptr);
+  return I && I->getMetadata("amdgpu.uniform");
+}