Add saving and restoring of r30 to the prologue and epilogue, respectively

Summary: The PIC additions didn't update the prologue and epilogue code to save and restore r30 (PIC base register).  This does that.

Test Plan: Tests updated.

Reviewers: hfinkel

Reviewed By: hfinkel

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D6876

llvm-svn: 225450

1 files changed, 1 insertions, 0 deletions

diff --git a/llvm/lib/Target/PowerPC/PPCISelDAGToDAG.cpp b/llvm/lib/Target/PowerPC/PPCISelDAGToDAG.cpp
index 6aa786f1173..75ab3430b49 100644
--- a/llvm/lib/Target/PowerPC/PPCISelDAGToDAG.cpp
+++ b/llvm/lib/Target/PowerPC/PPCISelDAGToDAG.cpp
@@ -307,6 +307,7 @@ SDNode *PPCDAGToDAGISel::getGlobalBaseReg() {
         if (M->getPICLevel() == PICLevel::Small) {
           BuildMI(FirstMBB, MBBI, dl, TII.get(PPC::MoveGOTtoLR));
           BuildMI(FirstMBB, MBBI, dl, TII.get(PPC::MFLR), GlobalBaseReg);
+          MF->getInfo<PPCFunctionInfo>()->setUsesPICBase(true);
         } else {
           BuildMI(FirstMBB, MBBI, dl, TII.get(PPC::MovePCtoLR));
           BuildMI(FirstMBB, MBBI, dl, TII.get(PPC::MFLR), GlobalBaseReg);