[AMDGPU] Increases available SGPR for Calling Convention

Summary:
SGPR in CC can be either hw initialized or set by other chained shaders
and so this increases the SGPR count availalbe to CC to 105.

Change-Id: I3dfadc750fe4a3e2bd07117a2899fd13f3e2fef3

Subscribers: arsenm, kzhuravl, jvesely, wdng, nhaehnle, yaxunl, dstuttard, tpr, t-tye, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D61261

llvm-svn: 360778

1 files changed, 2 insertions, 2 deletions

diff --git a/llvm/lib/Target/AMDGPU/AMDGPUISelLowering.cpp b/llvm/lib/Target/AMDGPU/AMDGPUISelLowering.cpp
index 409fbfa22f3..1f813ef412e 100644
--- a/llvm/lib/Target/AMDGPU/AMDGPUISelLowering.cpp
+++ b/llvm/lib/Target/AMDGPU/AMDGPUISelLowering.cpp
@@ -63,9 +63,9 @@ static bool allocateSGPRTuple(unsigned ValNo, MVT ValVT, MVT LocVT,
   case MVT::v2f32:
   case MVT::v4i16:
   case MVT::v4f16: {
-    // Up to SGPR0-SGPR39
+    // Up to SGPR0-SGPR105
     return allocateCCRegs(ValNo, ValVT, LocVT, LocInfo, ArgFlags, State,
-                          &AMDGPU::SGPR_64RegClass, 20);
+                          &AMDGPU::SGPR_64RegClass, 53);
   }
   default:
     return false;