diff options
Diffstat (limited to 'contrib/llvm')
-rw-r--r-- | contrib/llvm/lib/CodeGen/PrologEpilogInserter.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/contrib/llvm/lib/CodeGen/PrologEpilogInserter.cpp b/contrib/llvm/lib/CodeGen/PrologEpilogInserter.cpp index 959dd7d..9487cbd 100644 --- a/contrib/llvm/lib/CodeGen/PrologEpilogInserter.cpp +++ b/contrib/llvm/lib/CodeGen/PrologEpilogInserter.cpp @@ -29,6 +29,7 @@ #include "llvm/CodeGen/MachineFrameInfo.h" #include "llvm/CodeGen/MachineInstr.h" #include "llvm/CodeGen/MachineLoopInfo.h" +#include "llvm/CodeGen/MachineModuleInfo.h" #include "llvm/CodeGen/MachineRegisterInfo.h" #include "llvm/CodeGen/RegisterScavenging.h" #include "llvm/IR/InlineAsm.h" @@ -214,7 +215,8 @@ void PEI::calculateCalleeSavedRegisters(MachineFunction &F) { std::vector<CalleeSavedInfo> CSI; for (unsigned i = 0; CSRegs[i]; ++i) { unsigned Reg = CSRegs[i]; - if (F.getRegInfo().isPhysRegUsed(Reg)) { + // Functions which call __builtin_unwind_init get all their registers saved. + if (F.getRegInfo().isPhysRegUsed(Reg) || F.getMMI().callsUnwindInit()) { // If the reg is modified, save it! CSI.push_back(CalleeSavedInfo(Reg)); } |