Fix a problem where the PPC backend lost track of the fact that it had

to save and restore the LR register on entry and exit of a leaf function
that needed to access globals or the constant pool.  This should hopefully
fix oscar from sending the PPC tester spinning out of control.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20197 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/PowerPC/PPCInstrInfo.td b/lib/Target/PowerPC/PPCInstrInfo.td
index e134696f7581d9fbc1429c6243429886d8ff627f..4a1afed93d1c7a4907af897c74ba0dec8f19bfef 100644 (file)
--- a/lib/Target/PowerPC/PPCInstrInfo.td
+++ b/lib/Target/PowerPC/PPCInstrInfo.td
@@ -53,7 +53,9 @@ def ADJCALLSTACKDOWN : Pseudo<(ops), "; ADJCALLSTACKDOWN">;
 def ADJCALLSTACKUP : Pseudo<(ops), "; ADJCALLSTACKUP">;
 }
 def IMPLICIT_DEF : Pseudo<(ops), "; IMPLICIT_DEF">;
-def MovePCtoLR : Pseudo<(ops piclabel:$label), "bl $label">;
+
+let Defs = [LR] in
+  def MovePCtoLR : Pseudo<(ops piclabel:$label), "bl $label">;
 
 let isBranch = 1, isTerminator = 1 in {
   def COND_BRANCH : Pseudo<(ops), "; COND_BRANCH">;