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Add support for the printImplicitDefsBefore flag

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12893 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2004-04-13 17:18:39 +00:00
parent 5deaa7a73d
commit 266538350a
4 changed files with 69 additions and 10 deletions
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34
lib/Target/X86/X86AsmPrinter.cpp
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@@ -105,6 +105,7 @@ namespace {
}
void printImplUsesBefore(const TargetInstrDescriptor &Desc);
bool printImplDefsBefore(const TargetInstrDescriptor &Desc);
bool printImplUsesAfter(const TargetInstrDescriptor &Desc, const bool LC);
bool printImplDefsAfter(const TargetInstrDescriptor &Desc, const bool LC);
void printMachineInstruction(const MachineInstr *MI);
@@ -544,6 +545,30 @@ void Printer::printImplUsesBefore(const TargetInstrDescriptor &Desc) {
}
}
/// printImplDefsBefore - Emit the implicit-def registers for the instruction
/// described by DESC, if its PrintImplUsesBefore flag is set. Return true if
/// we printed any registers.
///
bool Printer::printImplDefsBefore(const TargetInstrDescriptor &Desc) {
bool Printed = false;
const MRegisterInfo &RI = *TM.getRegisterInfo();
if (Desc.TSFlags & X86II::PrintImplDefsBefore) {
const unsigned *p = Desc.ImplicitDefs;
if (*p) {
O << (Printed ? ", %" : "%") << RI.get (*p).Name;
Printed = true;
++p;
}
while (*p) {
// Bug Workaround: See note in Printer::doInitialization about %.
O << ", %" << RI.get(*p).Name;
++p;
}
}
return Printed;
}
/// printImplUsesAfter - Emit the implicit-use registers for the instruction
/// described by DESC, if its PrintImplUsesAfter flag is set.
///
@@ -655,22 +680,25 @@ void Printer::printMachineInstruction(const MachineInstr *MI) {
case X86II::RawFrm:
{
bool LeadingComma = false;
// The accepted forms of Raw instructions are:
// 1. nop - No operand required
// 2. jmp foo - PC relative displacement operand
// 3. call bar - GlobalAddress Operand or External Symbol Operand
// 4. in AL, imm - Immediate operand
//
assert(MI->getNumOperands() == 0 ||
(MI->getNumOperands() == 1 &&
(MI->getOperand(0).isPCRelativeDisp() ||
MI->getOperand(0).isGlobalAddress() ||
MI->getOperand(0).isExternalSymbol())) &&
MI->getOperand(0).isExternalSymbol() ||
MI->getOperand(0).isImmediate())) &&
"Illegal raw instruction!");
O << TII.getName(MI->getOpcode()) << " ";
bool LeadingComma = printImplDefsBefore(Desc);
if (MI->getNumOperands() == 1) {
if (LeadingComma) O << ", ";
printOp(MI->getOperand(0), true); // Don't print "OFFSET"...
LeadingComma = true;
}