radeon/llvm: Avoid error with SI in EmitInstrWithCustomInserter()

We need to return immediately after inserting instructions that require
S_WAITCNT so that the parent class' custom inserter won't try to insert
them again.

diff --git a/src/gallium/drivers/radeon/SIISelLowering.cpp b/src/gallium/drivers/radeon/SIISelLowering.cpp
index e176defcf5dbafbe1f29d931a3683aea09ed3d02..4615db24266bbadfa55ce0a52eb05d128798ceff 100644 (file)
--- a/src/gallium/drivers/radeon/SIISelLowering.cpp
+++ b/src/gallium/drivers/radeon/SIISelLowering.cpp
@@ -39,6 +39,7 @@ MachineBasicBlock * SITargetLowering::EmitInstrWithCustomInserter(
 
   if (TII->get(MI->getOpcode()).TSFlags & SIInstrFlags::NEED_WAIT) {
     AppendS_WAITCNT(MI, *BB, llvm::next(I));
+    return BB;
   }
 
   switch (MI->getOpcode()) {