wire up skeletal support for having llc print instructions
through mcinst lowering -> mcinstprinter, when llc is passed
the -enable-arm-mcinst-printer flag. Currently this
is very "aborty".
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84530 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/AsmPrinter/ARMAsmPrinter.cpp b/lib/Target/ARM/AsmPrinter/ARMAsmPrinter.cpp
index 9c8c272..1d81869 100644
--- a/lib/Target/ARM/AsmPrinter/ARMAsmPrinter.cpp
+++ b/lib/Target/ARM/AsmPrinter/ARMAsmPrinter.cpp
@@ -1,3 +1,5 @@
+//===-- ARMAsmPrinter.cpp - Print machine code to an ARM .s file ----------===//
+//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
@@ -13,11 +15,12 @@
#define DEBUG_TYPE "asm-printer"
#include "ARM.h"
#include "ARMBuildAttrs.h"
-#include "ARMTargetMachine.h"
#include "ARMAddressingModes.h"
#include "ARMConstantPoolValue.h"
-#include "ARMMachineFunctionInfo.h"
#include "ARMInstPrinter.h"
+#include "ARMMachineFunctionInfo.h"
+#include "ARMMCInstLower.h"
+#include "ARMTargetMachine.h"
#include "llvm/Constants.h"
#include "llvm/Module.h"
#include "llvm/Assembly/Writer.h"
@@ -28,6 +31,7 @@
#include "llvm/CodeGen/MachineJumpTableInfo.h"
#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCContext.h"
+#include "llvm/MC/MCInst.h"
#include "llvm/MC/MCSectionMachO.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCSymbol.h"
@@ -40,15 +44,20 @@
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/ADT/StringSet.h"
+#include "llvm/Support/CommandLine.h"
#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/FormattedStream.h"
#include "llvm/Support/Mangler.h"
#include "llvm/Support/MathExtras.h"
-#include "llvm/Support/FormattedStream.h"
#include <cctype>
using namespace llvm;
STATISTIC(EmittedInsts, "Number of machine instrs printed");
+static cl::opt<bool>
+EnableMCInst("enable-arm-mcinst-printer", cl::Hidden,
+ cl::desc("enable experimental asmprinter gunk in the arm backend"));
+
namespace {
class ARMAsmPrinter : public AsmPrinter {
@@ -77,7 +86,10 @@
void printMCInst(const MCInst *MI) {
ARMInstPrinter(O, *MAI).printInstruction(MI);
- }
+ }
+
+ void printInstructionThroughMCStreamer(const MachineInstr *MI);
+
void printOperand(const MachineInstr *MI, int OpNum,
const char *Modifier = 0);
@@ -276,14 +288,13 @@
for (MachineFunction::const_iterator I = MF.begin(), E = MF.end();
I != E; ++I) {
// Print a label for the basic block.
- if (I != MF.begin()) {
+ if (I != MF.begin())
EmitBasicBlockStart(I);
- }
+
+ // Print the assembly for the instruction.
for (MachineBasicBlock::const_iterator II = I->begin(), E = I->end();
- II != E; ++II) {
- // Print the assembly for the instruction.
+ II != E; ++II)
printMachineInstruction(II);
- }
}
if (MAI->hasDotTypeDotSizeDirective())
@@ -1026,7 +1037,13 @@
// Call the autogenerated instruction printer routines.
processDebugLoc(MI, true);
- printInstruction(MI);
+
+ if (EnableMCInst) {
+ printInstructionThroughMCStreamer(MI);
+ } else {
+ printInstruction(MI);
+ }
+
if (VerboseAsm && !MI->getDebugLoc().isUnknown())
EmitComments(*MI);
O << '\n';
@@ -1291,3 +1308,32 @@
RegisterAsmPrinter<ARMAsmPrinter> X(TheARMTarget);
RegisterAsmPrinter<ARMAsmPrinter> Y(TheThumbTarget);
}
+
+
+//===----------------------------------------------------------------------===//
+
+void ARMAsmPrinter::printInstructionThroughMCStreamer(const MachineInstr *MI) {
+ ARMMCInstLower MCInstLowering(OutContext, Mang);
+ switch (MI->getOpcode()) {
+ case TargetInstrInfo::DBG_LABEL:
+ case TargetInstrInfo::EH_LABEL:
+ case TargetInstrInfo::GC_LABEL:
+ printLabel(MI);
+ return;
+ case TargetInstrInfo::KILL:
+ return;
+ case TargetInstrInfo::INLINEASM:
+ O << '\t';
+ printInlineAsm(MI);
+ return;
+ case TargetInstrInfo::IMPLICIT_DEF:
+ printImplicitDef(MI);
+ return;
+ default: break;
+ }
+
+ MCInst TmpInst;
+ MCInstLowering.Lower(MI, TmpInst);
+
+ printMCInst(&TmpInst);
+}