AMDGPU/GlobalISel: Add support for simple shaders

Summary: We can select constant/global G_LOAD, global G_STORE, and G_GEP.

Reviewers: qcolombet, MatzeB, t.p.northover, ab, arsenm

Subscribers: mehdi_amini, vkalintiris, kzhuravl, wdng, nhaehnle, mgorny, yaxunl, tony-tye, modocache, llvm-commits, dberris

Differential Revision: https://reviews.llvm.org/D26730

llvm-svn: 293503

1 files changed, 8 insertions, 0 deletions

diff --git a/llvm/lib/Target/AMDGPU/AMDGPUCallLowering.h b/llvm/lib/Target/AMDGPU/AMDGPUCallLowering.h
index 9ae87c9397a..b5f3fa5617b 100644
--- a/llvm/lib/Target/AMDGPU/AMDGPUCallLowering.h
+++ b/llvm/lib/Target/AMDGPU/AMDGPUCallLowering.h
@@ -22,6 +22,13 @@ namespace llvm {
 class AMDGPUTargetLowering;
 
 class AMDGPUCallLowering: public CallLowering {
+
+  unsigned lowerParameterPtr(MachineIRBuilder &MIRBuilder, Type *ParamTy,
+                             unsigned Offset) const;
+
+  void lowerParameter(MachineIRBuilder &MIRBuilder, Type *ParamTy,
+                      unsigned Offset, unsigned DstReg) const;
+
  public:
   AMDGPUCallLowering(const AMDGPUTargetLowering &TLI);
 
@@ -29,6 +36,7 @@ class AMDGPUCallLowering: public CallLowering {
                    unsigned VReg) const override;
   bool lowerFormalArguments(MachineIRBuilder &MIRBuilder, const Function &F,
                             ArrayRef<unsigned> VRegs) const override;
+  CCAssignFn *CCAssignFnForCall(CallingConv::ID CC, bool IsVarArg) const;
 };
 } // End of namespace llvm;
 #endif