[AMDGPU] Add exec copy to LiveIntervals in SILowerControlFlow::emitElse
This instruction is missing from LiveIntervals.
I'm not aware of any problems because of this though.
Differential Revision: https://reviews.llvm.org/D28879
llvm-svn: 292521
diff --git a/llvm/lib/Target/AMDGPU/SILowerControlFlow.cpp b/llvm/lib/Target/AMDGPU/SILowerControlFlow.cpp
index 4a7dff4..0a0faf3 100644
--- a/llvm/lib/Target/AMDGPU/SILowerControlFlow.cpp
+++ b/llvm/lib/Target/AMDGPU/SILowerControlFlow.cpp
@@ -219,7 +219,8 @@
// tied. In order to correctly tie the registers, split this into a copy of
// the src like it does.
unsigned CopyReg = MRI->createVirtualRegister(&AMDGPU::SReg_64RegClass);
- BuildMI(MBB, Start, DL, TII->get(AMDGPU::COPY), CopyReg)
+ MachineInstr *CopyExec =
+ BuildMI(MBB, Start, DL, TII->get(AMDGPU::COPY), CopyReg)
.add(MI.getOperand(1)); // Saved EXEC
// This must be inserted before phis and any spill code inserted before the
@@ -261,6 +262,7 @@
LIS->RemoveMachineInstrFromMaps(MI);
MI.eraseFromParent();
+ LIS->InsertMachineInstrInMaps(*CopyExec);
LIS->InsertMachineInstrInMaps(*OrSaveExec);
LIS->InsertMachineInstrInMaps(*Xor);