I cannot find a libgcc function for this builtin. Therefor expanding it to a noop...

[oota-llvm.git] / lib / CodeGen / AsmPrinter.cpp

diff --git a/lib/CodeGen/AsmPrinter.cpp b/lib/CodeGen/AsmPrinter.cpp
index 0f7f6f1dc9ffd7057ab7b33a3910151dfa2ba228..b718958f974f579f72215a878bb92a7618ae8804 100644 (file)
--- a/lib/CodeGen/AsmPrinter.cpp
+++ b/lib/CodeGen/AsmPrinter.cpp
@@ -16,8 +16,11 @@
 #include "llvm/DerivedTypes.h"
 #include "llvm/Constants.h"
 #include "llvm/Module.h"
+#include "llvm/CodeGen/Collector.h"
+#include "llvm/CodeGen/CollectorMetadata.h"
 #include "llvm/CodeGen/MachineConstantPool.h"
 #include "llvm/CodeGen/MachineJumpTableInfo.h"
+#include "llvm/CodeGen/MachineModuleInfo.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/Mangler.h"
 #include "llvm/Support/MathExtras.h"
@@ -93,9 +96,20 @@ void AsmPrinter::SwitchToDataSection(const char *NewSection,
 }
 
 
+void AsmPrinter::getAnalysisUsage(AnalysisUsage &AU) const {
+  MachineFunctionPass::getAnalysisUsage(AU);
+  AU.addRequired<CollectorModuleMetadata>();
+}
+
 bool AsmPrinter::doInitialization(Module &M) {
   Mang = new Mangler(M, TAI->getGlobalPrefix());
   
+  CollectorModuleMetadata *CMM = getAnalysisToUpdate<CollectorModuleMetadata>();
+  assert(CMM && "AsmPrinter didn't require CollectorModuleMetadata?");
+  for (CollectorModuleMetadata::iterator I = CMM->begin(),
+                                         E = CMM->end(); I != E; ++I)
+    (*I)->beginAssembly(O, *this, *TAI);
+  
   if (!M.getModuleInlineAsm().empty())
     O << TAI->getCommentString() << " Start of file scope inline assembly\n"
       << M.getModuleInlineAsm()
@@ -104,9 +118,8 @@ bool AsmPrinter::doInitialization(Module &M) {
 
   SwitchToDataSection("");   // Reset back to no section.
   
-  if (MachineModuleInfo *MMI = getAnalysisToUpdate<MachineModuleInfo>()) {
-    MMI->AnalyzeModule(M);
-  }
+  MMI = getAnalysisToUpdate<MachineModuleInfo>();
+  if (MMI) MMI->AnalyzeModule(M);
   
   return false;
 }
@@ -144,7 +157,7 @@ bool AsmPrinter::doFinalization(Module &M) {
       else if (!I->hasInternalLinkage())
         assert(0 && "Invalid alias linkage");
       
-      O << TAI->getSetDirective() << Name << ", " << Target << "\n";
+      O << TAI->getSetDirective() << ' ' << Name << ", " << Target << "\n";
 
       // If the aliasee has external weak linkage it can be referenced only by
       // alias itself. In this case it can be not in ExtWeakSymbols list. Emit
@@ -157,6 +170,12 @@ bool AsmPrinter::doFinalization(Module &M) {
     }
   }
 
+  CollectorModuleMetadata *CMM = getAnalysisToUpdate<CollectorModuleMetadata>();
+  assert(CMM && "AsmPrinter didn't require CollectorModuleMetadata?");
+  for (CollectorModuleMetadata::iterator I = CMM->end(),
+                                         E = CMM->begin(); I != E; )
+    (*--I)->finishAssembly(O, *this, *TAI);
+
   delete Mang; Mang = 0;
   return false;
 }
@@ -919,10 +938,13 @@ void AsmPrinter::EmitGlobalConstant(const Constant *CV, bool Packed) {
       // api needed to prevent premature destruction
       APInt api = CFP->getValueAPF().convertToAPInt();
       const uint64_t *p = api.getRawData();
+      APFloat DoubleVal = CFP->getValueAPF();
+      DoubleVal.convert(APFloat::IEEEdouble, APFloat::rmNearestTiesToEven);
       if (TD->isBigEndian()) {
         O << TAI->getData16bitsDirective() << uint16_t(p[0] >> 48)
           << "\t" << TAI->getCommentString()
-          << " long double most significant halfword\n";
+          << " long double most significant halfword of ~"
+          << DoubleVal.convertToDouble() << "\n";
         O << TAI->getData16bitsDirective() << uint16_t(p[0] >> 32)
           << "\t" << TAI->getCommentString()
           << " long double next halfword\n";
@@ -938,7 +960,8 @@ void AsmPrinter::EmitGlobalConstant(const Constant *CV, bool Packed) {
        } else {
         O << TAI->getData16bitsDirective() << uint16_t(p[1])
           << "\t" << TAI->getCommentString()
-          << " long double least significant halfword\n";
+          << " long double least significant halfword of ~"
+          << DoubleVal.convertToDouble() << "\n";
         O << TAI->getData16bitsDirective() << uint16_t(p[0])
           << "\t" << TAI->getCommentString()
           << " long double next halfword\n";
@@ -1084,9 +1107,10 @@ void AsmPrinter::printInlineAsm(const MachineInstr *MI) const {
   // Disassemble the AsmStr, printing out the literal pieces, the operands, etc.
   const char *AsmStr = MI->getOperand(NumDefs).getSymbolName();
 
-  // If this asmstr is empty, don't bother printing the #APP/#NOAPP markers.
+  // If this asmstr is empty, just print the #APP/#NOAPP markers.
+  // These are useful to see where empty asm's wound up.
   if (AsmStr[0] == 0) {
-    O << "\n";  // Tab already printed, avoid double indenting next instr.
+    O << TAI->getInlineAsmStart() << "\n\t" << TAI->getInlineAsmEnd() << "\n";
     return;
   }
   
@@ -1226,7 +1250,7 @@ void AsmPrinter::printInlineAsm(const MachineInstr *MI) const {
           ++OpNo;  // Skip over the ID number.
 
           if (Modifier[0]=='l')  // labels are target independent
-            printBasicBlockLabel(MI->getOperand(OpNo).getMachineBasicBlock(), 
+            printBasicBlockLabel(MI->getOperand(OpNo).getMBB(), 
                                  false, false);
           else {
             AsmPrinter *AP = const_cast<AsmPrinter*>(this);
@@ -1256,10 +1280,24 @@ void AsmPrinter::printInlineAsm(const MachineInstr *MI) const {
 /// printLabel - This method prints a local label used by debug and
 /// exception handling tables.
 void AsmPrinter::printLabel(const MachineInstr *MI) const {
-  O << "\n" << TAI->getPrivateGlobalPrefix()
+  O << TAI->getPrivateGlobalPrefix()
     << "label" << MI->getOperand(0).getImm() << ":\n";
 }
 
+void AsmPrinter::printLabel(unsigned Id) const {
+  O << TAI->getPrivateGlobalPrefix() << "label" << Id << ":\n";
+}
+
+/// printDeclare - This method prints a local variable declaration used by
+/// debug tables.
+/// FIXME: It doesn't really print anything rather it inserts a DebugVariable
+/// entry into dwarf table.
+void AsmPrinter::printDeclare(const MachineInstr *MI) const {
+  int FI = MI->getOperand(0).getIndex();
+  GlobalValue *GV = MI->getOperand(1).getGlobal();
+  MMI->RecordVariable(GV, FI);
+}
+
 /// PrintAsmOperand - Print the specified operand of MI, an INLINEASM
 /// instruction, using the specified assembler variant.  Targets should
 /// overried this to format as appropriate.