From 3c2684d13646a76a0dd9ca6a8da5bd7fc0de6e8a Mon Sep 17 00:00:00 2001
From: Anton Korobeynikov <asl@math.spbu.ru>
Date: Sun, 3 May 2009 13:08:13 +0000
Subject: [PATCH] Some early full call lowering draft for direct calls

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70729 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/MSP430/MSP430AsmPrinter.cpp | 28 +++++++++++++++++++-------
 lib/Target/MSP430/MSP430InstrInfo.td   | 16 +++++++++++----
 2 files changed, 33 insertions(+), 11 deletions(-)

diff --git a/lib/Target/MSP430/MSP430AsmPrinter.cpp b/lib/Target/MSP430/MSP430AsmPrinter.cpp
index 6f1c8ebfd08..a9a27110296 100644
--- a/lib/Target/MSP430/MSP430AsmPrinter.cpp
+++ b/lib/Target/MSP430/MSP430AsmPrinter.cpp
@@ -127,19 +127,33 @@ void MSP430AsmPrinter::printOperand(const MachineInstr *MI, int OpNum,
   const MachineOperand &MO = MI->getOperand(OpNum);
   switch (MO.getType()) {
   case MachineOperand::MO_Register:
-    if (TargetRegisterInfo::isPhysicalRegister(MO.getReg()))
-      O << TM.getRegisterInfo()->get(MO.getReg()).AsmName;
-    else
-      assert(0 && "not implemented");
-    break;
+    assert (TargetRegisterInfo::isPhysicalRegister(MO.getReg()) &&
+            "Virtual registers should be already mapped!");
+    O << TM.getRegisterInfo()->get(MO.getReg()).AsmName;
+    return;
   case MachineOperand::MO_Immediate:
     if (!Modifier || strcmp(Modifier, "nohash"))
       O << '#';
     O << MO.getImm();
-    break;
+    return;
   case MachineOperand::MO_MachineBasicBlock:
     printBasicBlockLabel(MO.getMBB());
-    break;
+    return;
+  case MachineOperand::MO_GlobalAddress: {
+    bool isMemOp  = Modifier && !strcmp(Modifier, "mem");
+    bool isCallOp = Modifier && !strcmp(Modifier, "call");
+    std::string Name = Mang->getValueName(MO.getGlobal());
+    assert(MO.getOffset() == 0 && "No offsets allowed!");
+
+    if (isCallOp)
+      O << '#';
+    else if (isMemOp)
+      O << '&';
+
+    O << Name;
+
+    return;
+  }
   default:
     assert(0 && "Not implemented yet!");
   }
diff --git a/lib/Target/MSP430/MSP430InstrInfo.td b/lib/Target/MSP430/MSP430InstrInfo.td
index 1f13f2dd944..5d3566df5ff 100644
--- a/lib/Target/MSP430/MSP430InstrInfo.td
+++ b/lib/Target/MSP430/MSP430InstrInfo.td
@@ -106,10 +106,12 @@ let isCall = 1 in
   // registers are added manually.
   let Defs = [R12W, R13W, R14W, R15W, SRW],
       Uses = [SPW] in {
-    def CALL32r     : Pseudo<(outs), (ins GR16:$dst, variable_ops),
-                        "call\t{*}$dst", [(MSP430call GR16:$dst)]>;
-    def CALL32m     : Pseudo<(outs), (ins memsrc:$dst, variable_ops),
-                        "call\t{*}$dst", [(MSP430call (load addr:$dst))]>;
+    def CALLi     : Pseudo<(outs), (ins i16imm:$dst, variable_ops),
+                           "call\t${dst:call}", [(MSP430call imm:$dst)]>;
+    def CALLr     : Pseudo<(outs), (ins GR16:$dst, variable_ops),
+                           "call\t$dst", [(MSP430call GR16:$dst)]>;
+    def CALLm     : Pseudo<(outs), (ins memsrc:$dst, variable_ops),
+                           "call\t${dst:mem}", [(MSP430call (load addr:$dst))]>;
   }
 
 
@@ -608,3 +610,9 @@ def : Pat<(extloadi16i8 addr:$src), (MOVZX16rm8 addr:$src)>;
 // truncs
 def : Pat<(i8 (trunc GR16:$src)),
           (EXTRACT_SUBREG GR16:$src, subreg_8bit)>;
+
+// calls
+def : Pat<(MSP430call (i16 tglobaladdr:$dst)),
+          (CALLi tglobaladdr:$dst)>;
+def : Pat<(MSP430call (i16 texternalsym:$dst)),
+          (CALLi texternalsym:$dst)>;
-- 
2.34.1