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Add support for GCC compatible builtin setjmp and longjmp intrinsics. This is

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a supporting preliminary patch for GCC-compatible SjLJ exception handling. Note that these intrinsics are not designed to be invoked directly by the user, but
rather used by the front-end as target hooks for exception handling.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71610 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Grosbach
2009-05-12 23:59:14 +00:00
parent 9d3094b38e
commit 0e0da734bb
9 changed files with 77 additions and 5 deletions
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2
lib/CodeGen/PrologEpilogInserter.cpp
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@ -180,7 +180,7 @@ void PEI::calculateCalleeSavedRegisters(MachineFunction &Fn) {
std::vector<CalleeSavedInfo> CSI;
for (unsigned i = 0; CSRegs[i]; ++i) {
unsigned Reg = CSRegs[i];
if (Fn.getRegInfo().isPhysRegUsed(Reg)) {
if (Fn.getRegInfo().isPhysRegUsed(Reg) || Fn.doesHaveBuiltinSetjmp()) {
// If the reg is modified, save it!
CSI.push_back(CalleeSavedInfo(Reg, CSRegClasses[i]));
} else {