6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-06-15 05:24:01 +00:00
Code Issues Projects Releases Wiki Activity

CodeGen-Windows: Only emit _fltused if a VarArg function is called with floating point args.

Browse Source 
This should be the minimum set of functions that could possibly need it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116978 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Michael J. Spencer
2010-10-21 00:08:21 +00:00
parent 2d8f6fe610
commit dd0a00a6e3
4 changed files with 14 additions and 15 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
include/llvm/CodeGen/MachineModuleInfo.h
View File

@ -157,10 +157,9 @@ class MachineModuleInfo : public ImmutablePass {
/// in this module. /// in this module.
bool DbgInfoAvailable; bool DbgInfoAvailable;
/// True if this module calls an external function with floating point /// True if this module calls VarArg function with floating point arguments.
/// arguments. This is used to emit an undefined reference to fltused on /// This is used to emit an undefined reference to fltused on Windows targets.
/// Windows targets. bool CallsExternalVAFunctionWithFloatingPointArguments;
bool CallsExternalFunctionWithFloatingPointArguments;
public: public:
static char ID; // Pass identification, replacement for typeid static char ID; // Pass identification, replacement for typeid
@ -217,12 +216,12 @@ public:
bool callsUnwindInit() const { return CallsUnwindInit; } bool callsUnwindInit() const { return CallsUnwindInit; }
void setCallsUnwindInit(bool b) { CallsUnwindInit = b; } void setCallsUnwindInit(bool b) { CallsUnwindInit = b; }
bool callsExternalFunctionWithFloatingPointArguments() const { bool callsExternalVAFunctionWithFloatingPointArguments() const {
return CallsExternalFunctionWithFloatingPointArguments; return CallsExternalVAFunctionWithFloatingPointArguments;
} }
void setCallsExternalFunctionWithFloatingPointArguments(bool b) { void setCallsExternalVAFunctionWithFloatingPointArguments(bool b) {
CallsExternalFunctionWithFloatingPointArguments = b; CallsExternalVAFunctionWithFloatingPointArguments = b;
} }
/// getFrameMoves - Returns a reference to a list of moves done in the current /// getFrameMoves - Returns a reference to a list of moves done in the current

2
lib/CodeGen/MachineModuleInfo.cpp
View File

@ -257,7 +257,7 @@ MachineModuleInfo::MachineModuleInfo(const MCAsmInfo &MAI)
: ImmutablePass(ID), Context(MAI), : ImmutablePass(ID), Context(MAI),
ObjFileMMI(0), ObjFileMMI(0),
CurCallSite(0), CallsEHReturn(0), CallsUnwindInit(0), DbgInfoAvailable(false), CurCallSite(0), CallsEHReturn(0), CallsUnwindInit(0), DbgInfoAvailable(false),
CallsExternalFunctionWithFloatingPointArguments(false) { CallsExternalVAFunctionWithFloatingPointArguments(false) {
initializeMachineModuleInfoPass(*PassRegistry::getPassRegistry()); initializeMachineModuleInfoPass(*PassRegistry::getPassRegistry());
// Always emit some info, by default "no personality" info. // Always emit some info, by default "no personality" info.
Personalities.push_back(NULL); Personalities.push_back(NULL);

10
lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
View File

@ -5030,16 +5030,16 @@ void SelectionDAGBuilder::visitCall(const CallInst &I) {
// See if any floating point values are being passed to this external // See if any floating point values are being passed to this external
// function. This is used to emit an undefined reference to fltused on // function. This is used to emit an undefined reference to fltused on
// Windows. // Windows.
if (!F->hasLocalLinkage() && F->hasName()) { MachineModuleInfo &MMI = DAG.getMachineFunction().getMMI();
MachineModuleInfo &MMI = DAG.getMachineFunction().getMMI(); if (F->isVarArg() &&
for (unsigned i = 0, e = I.getNumArgOperands(); i != e && !MMI.callsExternalVAFunctionWithFloatingPointArguments()) {
!MMI.callsExternalFunctionWithFloatingPointArguments(); ++i) { for (unsigned i = 0, e = I.getNumArgOperands(); i != e; ++i) {
const Type* T = I.getArgOperand(i)->getType(); const Type* T = I.getArgOperand(i)->getType();
for (po_iterator<const Type*> i = po_begin(T), for (po_iterator<const Type*> i = po_begin(T),
e = po_end(T); e = po_end(T);
i != e; ++i) { i != e; ++i) {
if (i->isFloatingPointTy()) { if (i->isFloatingPointTy()) {
MMI.setCallsExternalFunctionWithFloatingPointArguments(true); MMI.setCallsExternalVAFunctionWithFloatingPointArguments(true);
break; break;
} }
} }

2
lib/Target/X86/X86AsmPrinter.cpp
View File

@ -582,7 +582,7 @@ void X86AsmPrinter::EmitEndOfAsmFile(Module &M) {
if (Subtarget->isTargetWindows() if (Subtarget->isTargetWindows()
&& !Subtarget->isTargetCygMing() && !Subtarget->isTargetCygMing()
&& MMI->callsExternalFunctionWithFloatingPointArguments()) { && MMI->callsExternalVAFunctionWithFloatingPointArguments()) {
MCSymbol *S = MMI->getContext().GetOrCreateSymbol(StringRef("__fltused")); MCSymbol *S = MMI->getContext().GetOrCreateSymbol(StringRef("__fltused"));
OutStreamer.EmitSymbolAttribute(S, MCSA_Global); OutStreamer.EmitSymbolAttribute(S, MCSA_Global);
} }