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Code Issues Projects Releases Wiki Activity

rename GetPrivateGlobalValueSymbolStub -> GetSymbolWithGlobalValueBase,

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and add an explicit ForcePrivate argument.

Switch FunctionEHFrameInfo to be MCSymbol based instead of string based.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93646 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2010-01-16 18:37:32 +00:00
parent 08ce3b473d
commit 7a2ba94d03
8 changed files with 63 additions and 43 deletions
Download Patch File Download Diff File Expand all files Collapse all files

52
lib/CodeGen/AsmPrinter/DwarfException.cpp
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@ -22,6 +22,7 @@
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCSection.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCSymbol.h"
#include "llvm/Target/TargetData.h"
#include "llvm/Target/TargetFrameInfo.h"
#include "llvm/Target/TargetLoweringObjectFile.h"
@ -230,17 +231,26 @@ void DwarfException::EmitFDE(const FunctionEHFrameInfo &EHFrameInfo) {
// Externally visible entry into the functions eh frame info. If the
// corresponding function is static, this should not be externally visible.
if (!TheFunc->hasLocalLinkage())
if (const char *GlobalEHDirective = MAI->getGlobalEHDirective())
O << GlobalEHDirective << EHFrameInfo.FnName << '\n';
if (const char *GlobalEHDirective = MAI->getGlobalEHDirective()) {
O << GlobalEHDirective;
EHFrameInfo.FunctionEHSym->print(O, MAI);
O << '\n';
}
// If corresponding function is weak definition, this should be too.
if (TheFunc->isWeakForLinker() && MAI->getWeakDefDirective())
O << MAI->getWeakDefDirective() << EHFrameInfo.FnName << '\n';
if (TheFunc->isWeakForLinker() && MAI->getWeakDefDirective()) {
O << MAI->getWeakDefDirective();
EHFrameInfo.FunctionEHSym->print(O, MAI);
O << '\n';
}
// If corresponding function is hidden, this should be too.
if (TheFunc->hasHiddenVisibility())
if (const char *HiddenDirective = MAI->getHiddenDirective())
O << HiddenDirective << EHFrameInfo.FnName << '\n' ;
if (const char *HiddenDirective = MAI->getHiddenDirective()) {
O << HiddenDirective;
EHFrameInfo.FunctionEHSym->print(O, MAI);
O << '\n';
}
// If there are no calls then you can't unwind. This may mean we can omit the
// EH Frame, but some environments do not handle weak absolute symbols. If
@ -250,14 +260,19 @@ void DwarfException::EmitFDE(const FunctionEHFrameInfo &EHFrameInfo) {
(!TheFunc->isWeakForLinker() ||
!MAI->getWeakDefDirective() ||
MAI->getSupportsWeakOmittedEHFrame())) {
O << EHFrameInfo.FnName << " = 0\n";
EHFrameInfo.FunctionEHSym->print(O, MAI);
O << " = 0\n";
// This name has no connection to the function, so it might get
// dead-stripped when the function is not, erroneously. Prohibit
// dead-stripping unconditionally.
if (const char *UsedDirective = MAI->getUsedDirective())
O << UsedDirective << EHFrameInfo.FnName << "\n\n";
if (const char *UsedDirective = MAI->getUsedDirective()) {
O << UsedDirective;
EHFrameInfo.FunctionEHSym->print(O, MAI);
O << "\n\n";
}
} else {
O << EHFrameInfo.FnName << ":\n";
EHFrameInfo.FunctionEHSym->print(O, MAI);
O << ":\n";
// EH frame header.
EmitDifference("eh_frame_end", EHFrameInfo.Number,
@ -328,8 +343,11 @@ void DwarfException::EmitFDE(const FunctionEHFrameInfo &EHFrameInfo) {
// on unused functions (calling undefined externals) being dead-stripped to
// link correctly. Yes, there really is.
if (MMI->isUsedFunction(EHFrameInfo.function))
if (const char *UsedDirective = MAI->getUsedDirective())
O << UsedDirective << EHFrameInfo.FnName << "\n\n";
if (const char *UsedDirective = MAI->getUsedDirective()) {
O << UsedDirective;
EHFrameInfo.FunctionEHSym->print(O, MAI);
O << "\n\n";
}
}
Asm->EOL();
@ -928,7 +946,7 @@ void DwarfException::EmitExceptionTable() {
PrintRelDirective();
if (GV) {
O << Asm->Mang->getMangledName(GV);
Asm->GetGlobalValueSymbol(GV)->print(O, MAI);
} else {
O << "0x0";
}
@ -1019,12 +1037,12 @@ void DwarfException::EndFunction() {
EmitLabel("eh_func_end", SubprogramCount);
EmitExceptionTable();
std::string FunctionEHName =
Asm->Mang->getMangledName(MF->getFunction(), ".eh",
Asm->MAI->is_EHSymbolPrivate());
const MCSymbol *FunctionEHSym =
Asm->GetSymbolWithGlobalValueBase(MF->getFunction(), ".eh",
Asm->MAI->is_EHSymbolPrivate());
// Save EH frame information
EHFrames.push_back(FunctionEHFrameInfo(FunctionEHName, SubprogramCount,
EHFrames.push_back(FunctionEHFrameInfo(FunctionEHSym, SubprogramCount,
MMI->getPersonalityIndex(),
MF->getFrameInfo()->hasCalls(),
!MMI->getLandingPads().empty(),