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Add a possibility to switch between CFI directives- and table-based frame description emission. Currently all the backends use table-based stuff.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123476 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Anton Korobeynikov
2011-01-14 21:58:08 +00:00
parent e749911372
commit 3965b5e974
8 changed files with 32 additions and 18 deletions
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13
lib/CodeGen/AsmPrinter/DwarfException.cpp
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@ -269,8 +269,7 @@ ComputeCallSiteTable(SmallVectorImpl<CallSiteEntry> &CallSites,
// instruction between the previous try-range and this one may throw,
// create a call-site entry with no landing pad for the region between the
// try-ranges.
if (SawPotentiallyThrowing &&
Asm->MAI->getExceptionHandlingType() == ExceptionHandling::Dwarf) {
if (SawPotentiallyThrowing && Asm->MAI->isExceptionHandlingDwarf()) {
CallSiteEntry Site = { LastLabel, BeginLabel, 0, 0 };
CallSites.push_back(Site);
PreviousIsInvoke = false;
@ -292,8 +291,7 @@ ComputeCallSiteTable(SmallVectorImpl<CallSiteEntry> &CallSites,
};
// Try to merge with the previous call-site. SJLJ doesn't do this
if (PreviousIsInvoke &&
Asm->MAI->getExceptionHandlingType() == ExceptionHandling::Dwarf) {
if (PreviousIsInvoke && Asm->MAI->isExceptionHandlingDwarf()) {
CallSiteEntry &Prev = CallSites.back();
if (Site.PadLabel == Prev.PadLabel && Site.Action == Prev.Action) {
// Extend the range of the previous entry.
@ -303,7 +301,7 @@ ComputeCallSiteTable(SmallVectorImpl<CallSiteEntry> &CallSites,
}
// Otherwise, create a new call-site.
if (Asm->MAI->getExceptionHandlingType() == ExceptionHandling::Dwarf)
if (Asm->MAI->isExceptionHandlingDwarf())
CallSites.push_back(Site);
else {
// SjLj EH must maintain the call sites in the order assigned
@ -321,8 +319,7 @@ ComputeCallSiteTable(SmallVectorImpl<CallSiteEntry> &CallSites,
// If some instruction between the previous try-range and the end of the
// function may throw, create a call-site entry with no landing pad for the
// region following the try-range.
if (SawPotentiallyThrowing &&
Asm->MAI->getExceptionHandlingType() == ExceptionHandling::Dwarf) {
if (SawPotentiallyThrowing && Asm->MAI->isExceptionHandlingDwarf()) {
CallSiteEntry Site = { LastLabel, 0, 0, 0 };
CallSites.push_back(Site);
}
@ -536,7 +533,7 @@ void DwarfException::EmitExceptionTable() {
}
} else {
// DWARF Exception handling
assert(Asm->MAI->getExceptionHandlingType() == ExceptionHandling::Dwarf);
assert(Asm->MAI->isExceptionHandlingDwarf());
// The call-site table is a list of all call sites that may throw an
// exception (including C++ 'throw' statements) in the procedure