BranchRelaxation: computeLiveIns() after creating new block
One case in BranchRelaxation did not compute liveins after creating a
new block. This is catched by existing tests with an upcoming commit
that will improve MachineVerifier checking of livein lists.
llvm-svn: 304049
diff --git a/llvm/lib/CodeGen/BranchRelaxation.cpp b/llvm/lib/CodeGen/BranchRelaxation.cpp
index feaabb4..e3de61c 100644
--- a/llvm/lib/CodeGen/BranchRelaxation.cpp
+++ b/llvm/lib/CodeGen/BranchRelaxation.cpp
@@ -345,6 +345,10 @@
// Do it here since if there's no split, no update is needed.
MBB->replaceSuccessor(FBB, &NewBB);
NewBB.addSuccessor(FBB);
+
+ // Need to fix live-in lists if we track liveness.
+ if (TRI->trackLivenessAfterRegAlloc(*MF))
+ computeLiveIns(LiveRegs, MF->getRegInfo(), NewBB);
}
// We now have an appropriate fall-through block in place (either naturally or