AMDGPU/SI: Add a MachineMemOperand when lowering llvm.amdgcn.buffer.load.*
Reviewers: arsenm, nhaehnle, mareko
Subscribers: kzhuravl, wdng, yaxunl, llvm-commits, tony-tye
Differential Revision: https://reviews.llvm.org/D27834
llvm-svn: 290184
diff --git a/llvm/lib/Target/AMDGPU/SIMachineFunctionInfo.h b/llvm/lib/Target/AMDGPU/SIMachineFunctionInfo.h
index 0b92198..f4c210f 100644
--- a/llvm/lib/Target/AMDGPU/SIMachineFunctionInfo.h
+++ b/llvm/lib/Target/AMDGPU/SIMachineFunctionInfo.h
@@ -47,6 +47,29 @@
}
};
+class AMDGPUBufferPseudoSourceValue : public PseudoSourceValue {
+public:
+ explicit AMDGPUBufferPseudoSourceValue() :
+ PseudoSourceValue(PseudoSourceValue::TargetCustom) { }
+
+ bool isConstant(const MachineFrameInfo *) const override {
+ // This should probably be true for most images, but we will start by being
+ // conservative.
+ return false;
+ }
+
+ bool isAliased(const MachineFrameInfo *) const override {
+ // FIXME: If we ever change image intrinsics to accept fat pointers, then
+ // this could be true for some cases.
+ return false;
+ }
+
+ bool mayAlias(const MachineFrameInfo*) const override {
+ // FIXME: If we ever change image intrinsics to accept fat pointers, then
+ // this could be true for some cases.
+ return false;
+ }
+};
/// This class keeps track of the SPI_SP_INPUT_ADDR config register, which
/// tells the hardware which interpolation parameters to load.
@@ -98,6 +121,7 @@
// Stack object indices for work item IDs.
std::array<int, 3> DebuggerWorkItemIDStackObjectIndices;
+ AMDGPUBufferPseudoSourceValue BufferPSV;
std::unique_ptr<AMDGPUImagePseudoSourceValue> ImagePSV;
public:
@@ -462,6 +486,10 @@
llvm_unreachable("unexpected dimension");
}
+ const AMDGPUBufferPseudoSourceValue *getBufferPSV() const {
+ return &BufferPSV;
+ }
+
AMDGPUImagePseudoSourceValue *getImagePSV() {
return ImagePSV.get();
}