Move transformation of JmpLink and related nodes done during instruction selection to Legalize phase.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128830 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/Mips/MipsISelLowering.cpp b/lib/Target/Mips/MipsISelLowering.cpp
index 59ad81b..20df9c8 100644
--- a/lib/Target/Mips/MipsISelLowering.cpp
+++ b/lib/Target/Mips/MipsISelLowering.cpp
@@ -1201,12 +1201,34 @@
// direct call is) turn it into a TargetGlobalAddress/TargetExternalSymbol
// node so that legalize doesn't hack it.
unsigned char OpFlag = IsPIC ? MipsII::MO_GOT_CALL : MipsII::MO_NO_FLAG;
- if (GlobalAddressSDNode *G = dyn_cast<GlobalAddressSDNode>(Callee))
+ bool LoadSymAddr = false;
+
+ if (GlobalAddressSDNode *G = dyn_cast<GlobalAddressSDNode>(Callee)) {
Callee = DAG.getTargetGlobalAddress(G->getGlobal(), dl,
- getPointerTy(), 0, OpFlag);
- else if (ExternalSymbolSDNode *S = dyn_cast<ExternalSymbolSDNode>(Callee))
+ getPointerTy(), 0, OpFlag);
+ LoadSymAddr = true;
+ }
+ else if (ExternalSymbolSDNode *S = dyn_cast<ExternalSymbolSDNode>(Callee)) {
Callee = DAG.getTargetExternalSymbol(S->getSymbol(),
getPointerTy(), OpFlag);
+ LoadSymAddr = true;
+ }
+
+ // Create nodes that load address of callee and copy it to T9
+ if (IsPIC) {
+ if (LoadSymAddr) {
+ // load callee address
+ Callee = DAG.getLoad(MVT::i32, dl, Chain, Callee,
+ MachinePointerInfo::getGOT(),
+ false, false, 0);
+ Chain = Callee.getValue(1);
+ }
+
+ // copy to T9
+ Chain = DAG.getCopyToReg(Chain, dl, Mips::T9, Callee, SDValue(0, 0));
+ InFlag = Chain.getValue(1);
+ Callee = DAG.getRegister(Mips::T9, MVT::i32);
+ }
// MipsJmpLink = #chain, #target_address, #opt_in_flags...
// = Chain, Callee, Reg#1, Reg#2, ...