[llvm-commits] CVS: llvm/lib/Target/X86/X86ISelDAGToDAG.cpp

[Chris Lattner]

Changes in directory llvm/lib/Target/X86:

X86ISelDAGToDAG.cpp updated: 1.73 -> 1.74
---
Log message:

Add support for "m" inline asm constraints.


---
Diffs of the changes:  (+29 -1)

 X86ISelDAGToDAG.cpp |   30 +++++++++++++++++++++++++++++-
 1 files changed, 29 insertions(+), 1 deletion(-)


Index: llvm/lib/Target/X86/X86ISelDAGToDAG.cpp
diff -u llvm/lib/Target/X86/X86ISelDAGToDAG.cpp:1.73 llvm/lib/Target/X86/X86ISelDAGToDAG.cpp:1.74
--- llvm/lib/Target/X86/X86ISelDAGToDAG.cpp:1.73	Fri Jun  2 17:38:37 2006
+++ llvm/lib/Target/X86/X86ISelDAGToDAG.cpp	Thu Jun  8 13:03:49 2006
@@ -128,7 +128,13 @@
     bool TryFoldLoad(SDOperand P, SDOperand N,
                      SDOperand &Base, SDOperand &Scale,
                      SDOperand &Index, SDOperand &Disp);
-
+    /// SelectInlineAsmMemoryOperand - Implement addressing mode selection for
+    /// inline asm expressions.
+    virtual bool SelectInlineAsmMemoryOperand(const SDOperand &Op,
+                                              char ConstraintCode,
+                                              std::vector<SDOperand> &OutOps,
+                                              SelectionDAG &DAG);
+    
     void EmitSpecialCodeForMain(MachineBasicBlock *BB, MachineFrameInfo *MFI);
 
     inline void getAddressOperands(X86ISelAddressMode &AM, SDOperand &Base, 
@@ -876,6 +882,28 @@
 #endif
 }
 
+bool X86DAGToDAGISel::
+SelectInlineAsmMemoryOperand(const SDOperand &Op, char ConstraintCode,
+                             std::vector<SDOperand> &OutOps, SelectionDAG &DAG){
+  SDOperand Op0, Op1, Op2, Op3;
+  switch (ConstraintCode) {
+  case 'o':   // offsetable        ??
+  case 'v':   // not offsetable    ??
+  default: return true;
+  case 'm':   // memory
+    if (!SelectAddr(Op, Op0, Op1, Op2, Op3))
+      return true;
+    break;
+  }
+  
+  OutOps.resize(4);
+  Select(OutOps[0], Op0);
+  Select(OutOps[1], Op1);
+  Select(OutOps[2], Op2);
+  Select(OutOps[3], Op3);
+  return false;
+}
+
 /// createX86ISelDag - This pass converts a legalized DAG into a 
 /// X86-specific DAG, ready for instruction scheduling.
 ///