Changes in directory llvm/lib/CodeGen/SelectionDAG:
SelectionDAG.cpp updated: 1.340 -> 1.341
SelectionDAGISel.cpp updated: 1.279 -> 1.280
---
Log message:
Comments on JumpTableness
---
Diffs of the changes: (+4 -0)
SelectionDAG.cpp | 1 +
SelectionDAGISel.cpp | 3 +++
2 files changed, 4 insertions(+)
Index: llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
diff -u llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp:1.340
llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp:1.341
--- llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp:1.340 Tue Sep 19
00:02:39 2006
+++ llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp Tue Sep 26 15:02:30 2006
@@ -2403,6 +2403,7 @@
case ISD::GlobalAddress: return "GlobalAddress";
case ISD::FrameIndex: return "FrameIndex";
case ISD::JumpTable: return "JumpTable";
+ case ISD::JumpTableRelocBase: return "JumpTableRelocBase";
case ISD::ConstantPool: return "ConstantPool";
case ISD::ExternalSymbol: return "ExternalSymbol";
case ISD::INTRINSIC_WO_CHAIN: {
Index: llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
diff -u llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp:1.279
llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp:1.280
--- llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp:1.279 Sun Sep 24
14:44:59 2006
+++ llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp Tue Sep 26 15:02:30 2006
@@ -868,6 +868,9 @@
SDOperand LD = DAG.getLoad(isPIC ? MVT::i32 : PTy, Copy.getValue(1), ADD,
DAG.getSrcValue(0));
if (isPIC) {
+ // For Pic, the sequence is:
+ // BRIND(load(Jumptable + index) + RelocBase)
+ // RelocBase is the JumpTable on PPC and X86, GOT on Alpha
SDOperand Reloc = DAG.getNode(ISD::JumpTableRelocBase, PTy, TAB);
ADD = DAG.getNode(ISD::ADD, PTy,
((PTy != MVT::i32) ? DAG.getNode(ISD::SIGN_EXTEND, PTy, LD) : LD),
Reloc);
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