AMDGPU: Fix missing skipFunction calls

llvm-svn: 315361
diff --git a/llvm/lib/Target/AMDGPU/SIPeepholeSDWA.cpp b/llvm/lib/Target/AMDGPU/SIPeepholeSDWA.cpp
index 24b7fe0..9390628 100644
--- a/llvm/lib/Target/AMDGPU/SIPeepholeSDWA.cpp
+++ b/llvm/lib/Target/AMDGPU/SIPeepholeSDWA.cpp
@@ -830,7 +830,7 @@
 bool SIPeepholeSDWA::runOnMachineFunction(MachineFunction &MF) {
   const SISubtarget &ST = MF.getSubtarget<SISubtarget>();
 
-  if (!ST.hasSDWA())
+  if (!ST.hasSDWA() || skipFunction(*MF.getFunction()))
     return false;
 
   MRI = &MF.getRegInfo();