From c1142725bdb5540f6b9d08bf6c8ad51af4fbf1be Mon Sep 17 00:00:00 2001
From: Matt Arsenault <Matthew.Arsenault@amd.com>
Date: Thu, 30 Jun 2016 20:49:28 +0000
Subject: [PATCH] AMDGPU: Add m0 vgpr load loop block as successor

This shows up as a verifier error when I move this
earlier, not sure why it didn't before.

llvm-svn: 274275
---
 llvm/lib/Target/AMDGPU/SILowerControlFlow.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/llvm/lib/Target/AMDGPU/SILowerControlFlow.cpp b/llvm/lib/Target/AMDGPU/SILowerControlFlow.cpp
index 861aa83888d9..ae23a96b621b 100644
--- a/llvm/lib/Target/AMDGPU/SILowerControlFlow.cpp
+++ b/llvm/lib/Target/AMDGPU/SILowerControlFlow.cpp
@@ -521,6 +521,7 @@ bool SILowerControlFlow::loadM0(MachineInstr &MI, MachineInstr *MovRel, int Offs
   // Move the rest of the block into a new block.
   RemainderBB->transferSuccessors(&MBB);
   RemainderBB->splice(RemainderBB->begin(), &MBB, I, MBB.end());
+  MBB.addSuccessor(LoopBB);
 
   emitLoadM0FromVGPRLoop(*LoopBB, DL, MovRel, *Idx, Offset);