From 6c81418a63b59808be12ed567c8e984a31f4822a Mon Sep 17 00:00:00 2001
From: Tom Stellard <tstellar@redhat.com>
Date: Mon, 30 Apr 2018 15:15:23 +0000
Subject: [PATCH] AMDGPU/GlobalISel: Don't try to lower geometry shaders

Summary: The AMDGPU_GS calling convention is not supported yet.

Reviewers: arsenm, nhaehnle

Reviewed By: nhaehnle

Subscribers: kzhuravl, wdng, yaxunl, rovka, kristof.beyls, dstuttard, tpr, t-tye, llvm-commits

Differential Revision: https://reviews.llvm.org/D46041

llvm-svn: 331186
---
 llvm/lib/Target/AMDGPU/AMDGPUCallLowering.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/llvm/lib/Target/AMDGPU/AMDGPUCallLowering.cpp b/llvm/lib/Target/AMDGPU/AMDGPUCallLowering.cpp
index 3fd5c8de39ce..7f1b92698b12 100644
--- a/llvm/lib/Target/AMDGPU/AMDGPUCallLowering.cpp
+++ b/llvm/lib/Target/AMDGPU/AMDGPUCallLowering.cpp
@@ -88,6 +88,9 @@ void AMDGPUCallLowering::lowerParameter(MachineIRBuilder &MIRBuilder,
 bool AMDGPUCallLowering::lowerFormalArguments(MachineIRBuilder &MIRBuilder,
                                               const Function &F,
                                               ArrayRef<unsigned> VRegs) const {
+  // AMDGPU_GS is not supported yet.
+  if (F.getCallingConv() == CallingConv::AMDGPU_GS)
+    return false;
 
   MachineFunction &MF = MIRBuilder.getMF();
   const SISubtarget *Subtarget = static_cast<const SISubtarget *>(&MF.getSubtarget());