diff options
Diffstat (limited to 'lib/Target/X86/MCTargetDesc/X86AsmBackend.cpp')
| -rw-r--r-- | lib/Target/X86/MCTargetDesc/X86AsmBackend.cpp | 12 |
1 files changed, 0 insertions, 12 deletions
diff --git a/lib/Target/X86/MCTargetDesc/X86AsmBackend.cpp b/lib/Target/X86/MCTargetDesc/X86AsmBackend.cpp index 0e4c4398e49d..64e6fb9f0375 100644 --- a/lib/Target/X86/MCTargetDesc/X86AsmBackend.cpp +++ b/lib/Target/X86/MCTargetDesc/X86AsmBackend.cpp @@ -540,7 +540,6 @@ protected: unsigned InstrOffset = 0; unsigned StackAdjust = 0; unsigned StackSize = 0; - unsigned PrevStackSize = 0; unsigned NumDefCFAOffsets = 0; for (unsigned i = 0, e = Instrs.size(); i != e; ++i) { @@ -588,7 +587,6 @@ protected: // L0: // .cfi_def_cfa_offset 80 // - PrevStackSize = StackSize; StackSize = std::abs(Inst.getOffset()) / StackDivide; ++NumDefCFAOffsets; break; @@ -635,16 +633,6 @@ protected: CompactUnwindEncoding |= (StackAdjust & 0xFF) << 16; CompactUnwindEncoding |= RegEnc & CU::UNWIND_BP_FRAME_REGISTERS; } else { - // If the amount of the stack allocation is the size of a register, then - // we "push" the RAX/EAX register onto the stack instead of adjusting the - // stack pointer with a SUB instruction. We don't support the push of the - // RAX/EAX register with compact unwind. So we check for that situation - // here. - if ((NumDefCFAOffsets == SavedRegIdx + 1 && - StackSize - PrevStackSize == 1) || - (Instrs.size() == 1 && NumDefCFAOffsets == 1 && StackSize == 2)) - return CU::UNWIND_MODE_DWARF; - SubtractInstrIdx += InstrOffset; ++StackAdjust; |