From 870397739ecda4a2adde401251f09b9580e4f927 Mon Sep 17 00:00:00 2001
From: Matt Arsenault <Matthew.Arsenault@amd.com>
Date: Tue, 5 Mar 2019 18:38:00 +0000
Subject: AMDGPU: Preserve undef flag when expanding SI_IF

Fixes undefined value verifier error.

llvm-svn: 355426
---
 llvm/lib/Target/AMDGPU/SILowerControlFlow.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'llvm/lib')

diff --git a/llvm/lib/Target/AMDGPU/SILowerControlFlow.cpp b/llvm/lib/Target/AMDGPU/SILowerControlFlow.cpp
index d8ee8e31e87..a399f7715a2 100644
--- a/llvm/lib/Target/AMDGPU/SILowerControlFlow.cpp
+++ b/llvm/lib/Target/AMDGPU/SILowerControlFlow.cpp
@@ -199,8 +199,8 @@ void SILowerControlFlow::emitIf(MachineInstr &MI) {
   MachineInstr *And =
     BuildMI(MBB, I, DL, TII->get(AMDGPU::S_AND_B64), Tmp)
     .addReg(CopyReg)
-    //.addReg(AMDGPU::EXEC)
-    .addReg(Cond.getReg());
+    .add(Cond);
+
   setImpSCCDefDead(*And, true);
 
   MachineInstr *Xor = nullptr;
-- 
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