[llvm-commits] [llvm] r84546 - in /llvm/trunk/lib/Target/ARM/AsmPrinter: ARMInstPrinter.cpp ARMInstPrinter.h

[Chris Lattner]

Author: lattner
Date: Mon Oct 19 17:09:23 2009
New Revision: 84546

URL: http://llvm.org/viewvc/llvm-project?rev=84546&view=rev
Log:
add register list and hacked up addrmode #4 support, we now get this:

_main:
	stmsp! sp!, {r7, lr}
	mov r7, sp
	sub sp, sp, #4
	mov r0, #0
	str r0, [sp]
	ldr r0, LCPI1_0
	bl _printf
	ldr r0, [sp]
	mov sp, r7
	ldmsp! sp!, {r7, pc}

Note the unhappy ldm/stm because of modifiers being ignored.


Modified:
    llvm/trunk/lib/Target/ARM/AsmPrinter/ARMInstPrinter.cpp
    llvm/trunk/lib/Target/ARM/AsmPrinter/ARMInstPrinter.h

Modified: llvm/trunk/lib/Target/ARM/AsmPrinter/ARMInstPrinter.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/AsmPrinter/ARMInstPrinter.cpp?rev=84546&r1=84545&r2=84546&view=diff

==============================================================================
--- llvm/trunk/lib/Target/ARM/AsmPrinter/ARMInstPrinter.cpp (original)
+++ llvm/trunk/lib/Target/ARM/AsmPrinter/ARMInstPrinter.cpp Mon Oct 19 17:09:23 2009
@@ -19,6 +19,7 @@
 #include "llvm/MC/MCExpr.h"
 #include "llvm/Support/raw_ostream.h"
 #include "ARMGenInstrNames.inc"
+#include "ARMGenRegisterNames.inc"
 using namespace llvm;
 
 // Include the auto-generated portion of the assembly writer.
@@ -111,3 +112,48 @@
     << " #" << ShImm;
   O << "]";
 }  
+
+
+void ARMInstPrinter::printAddrMode4Operand(const MCInst *MI, unsigned OpNum,
+                                           const char *Modifier) {
+  // FIXME: ENABLE assert.
+  //assert((Modifier == 0 || Modifier[0] == 0) && "Cannot print modifiers");
+  
+  const MCOperand &MO1 = MI->getOperand(OpNum);
+  const MCOperand &MO2 = MI->getOperand(OpNum+1);
+  ARM_AM::AMSubMode Mode = ARM_AM::getAM4SubMode(MO2.getImm());
+  if (0 && Modifier && strcmp(Modifier, "submode") == 0) {
+    if (MO1.getReg() == ARM::SP) {
+      // FIXME
+      bool isLDM = (MI->getOpcode() == ARM::LDM ||
+                    MI->getOpcode() == ARM::LDM_RET ||
+                    MI->getOpcode() == ARM::t2LDM ||
+                    MI->getOpcode() == ARM::t2LDM_RET);
+      O << ARM_AM::getAMSubModeAltStr(Mode, isLDM);
+    } else
+      O << ARM_AM::getAMSubModeStr(Mode);
+  } else if (0 && Modifier && strcmp(Modifier, "wide") == 0) {
+    ARM_AM::AMSubMode Mode = ARM_AM::getAM4SubMode(MO2.getImm());
+    if (Mode == ARM_AM::ia)
+      O << ".w";
+  } else {
+    printOperand(MI, OpNum);
+    if (ARM_AM::getAM4WBFlag(MO2.getImm()))
+      O << "!";
+  }
+}
+
+void ARMInstPrinter::printRegisterList(const MCInst *MI, unsigned OpNum) {
+  O << "{";
+  // Always skip the first operand, it's the optional (and implicit writeback).
+  for (unsigned i = OpNum+1, e = MI->getNumOperands(); i != e; ++i) {
+#if 0 // FIXME: HANDLE WHEN LOWERING??
+    if (MI->getOperand(i).isImplicit())
+      continue;
+#endif
+    if (i != OpNum+1) O << ", ";
+    
+    O << getRegisterName(MI->getOperand(i).getReg());
+  }
+  O << "}";
+}

Modified: llvm/trunk/lib/Target/ARM/AsmPrinter/ARMInstPrinter.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/AsmPrinter/ARMInstPrinter.h?rev=84546&r1=84545&r2=84546&view=diff

==============================================================================
--- llvm/trunk/lib/Target/ARM/AsmPrinter/ARMInstPrinter.h (original)
+++ llvm/trunk/lib/Target/ARM/AsmPrinter/ARMInstPrinter.h Mon Oct 19 17:09:23 2009
@@ -45,7 +45,7 @@
   void printAddrMode3Operand(const MCInst *MI, unsigned OpNum) {}
   void printAddrMode3OffsetOperand(const MCInst *MI, unsigned OpNum) {}
   void printAddrMode4Operand(const MCInst *MI, unsigned OpNum,
-                             const char *Modifier = 0) {}
+                             const char *Modifier = 0);
   void printAddrMode5Operand(const MCInst *MI, unsigned OpNum,
                              const char *Modifier = 0) {}
   void printAddrMode6Operand(const MCInst *MI, unsigned OpNum) {}
@@ -72,7 +72,7 @@
   void printPredicateOperand(const MCInst *MI, unsigned OpNum) {}
   void printSBitModifierOperand(const MCInst *MI, unsigned OpNum) {}
   void printPCLabel(const MCInst *MI, unsigned OpNum) {}
-  void printRegisterList(const MCInst *MI, unsigned OpNum) {}
+  void printRegisterList(const MCInst *MI, unsigned OpNum);
   void printCPInstOperand(const MCInst *MI, unsigned OpNum,
                           const char *Modifier) {}
   void printJTBlockOperand(const MCInst *MI, unsigned OpNum) {}