aboutsummaryrefslogtreecommitdiff
path: root/llvm/lib/CodeGen/LiveRegUnits.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'llvm/lib/CodeGen/LiveRegUnits.cpp')
-rw-r--r--llvm/lib/CodeGen/LiveRegUnits.cpp16
1 files changed, 9 insertions, 7 deletions
diff --git a/llvm/lib/CodeGen/LiveRegUnits.cpp b/llvm/lib/CodeGen/LiveRegUnits.cpp
index c58a06a..6afb7fb 100644
--- a/llvm/lib/CodeGen/LiveRegUnits.cpp
+++ b/llvm/lib/CodeGen/LiveRegUnits.cpp
@@ -125,13 +125,15 @@ void LiveRegUnits::addPristines(const MachineFunction &MF) {
void LiveRegUnits::addLiveOuts(const MachineBasicBlock &MBB) {
const MachineFunction &MF = *MBB.getParent();
- if (!MBB.succ_empty()) {
- addPristines(MF);
- // To get the live-outs we simply merge the live-ins of all successors.
- for (const MachineBasicBlock *Succ : MBB.successors())
- addBlockLiveIns(*this, *Succ);
- } else if (MBB.isReturnBlock()) {
- // For the return block: Add all callee saved registers.
+
+ addPristines(MF);
+
+ // To get the live-outs we simply merge the live-ins of all successors.
+ for (const MachineBasicBlock *Succ : MBB.successors())
+ addBlockLiveIns(*this, *Succ);
+
+ // For the return block: Add all callee saved registers.
+ if (MBB.isReturnBlock()) {
const MachineFrameInfo &MFI = MF.getFrameInfo();
if (MFI.isCalleeSavedInfoValid())
addCalleeSavedRegs(*this, MF);