diff options
Diffstat (limited to 'llvm/lib/Target/X86/X86AsmPrinter.cpp')
| -rw-r--r-- | llvm/lib/Target/X86/X86AsmPrinter.cpp | 25 |
1 files changed, 0 insertions, 25 deletions
diff --git a/llvm/lib/Target/X86/X86AsmPrinter.cpp b/llvm/lib/Target/X86/X86AsmPrinter.cpp index 76241dae069..67e51f1e919 100644 --- a/llvm/lib/Target/X86/X86AsmPrinter.cpp +++ b/llvm/lib/Target/X86/X86AsmPrinter.cpp @@ -76,31 +76,6 @@ bool X86AsmPrinter::runOnMachineFunction(MachineFunction &MF) { return false; } -void X86AsmPrinter::EmitConstantPool() { - if (MF) { - // If an MS hotpatch function, we need to ensure 64 (32-bit) or 128 (64-bit) - // bytes of padding precede the label. This is the scratch space used - // by the hotpatching mechanism to insert the patch code. The movl %edi, - // %edi instruction emitted as the very first instruction of a hotpatch - // function is usually overwritten with a short jump instruction when the - // patch is installed, so it will jump directly into this space. (But - // don't add the space when targeting MSVC. There, the /FUNCTIONPADMIN - // option to link.exe is expected to be used.) - const Function *Fn = MF->getFunction(); - if (!Subtarget->isTargetKnownWindowsMSVC() && - Fn->hasFnAttribute("patchable-function") && - Fn->getFnAttribute("patchable-function").getValueAsString() == - "ms-hotpatch") { - // Emit INT3 instructions instead of NOPs. If a patch runs off the end, - // best to let the patcher know with a crash/debug break than to silently - // continue, only to run into the jump back into the patch. - OutStreamer->emitFill(Subtarget->is64Bit() ? 128 : 64, 0xcc); - } - } - - AsmPrinter::EmitConstantPool(); -} - /// printSymbolOperand - Print a raw symbol reference operand. This handles /// jump tables, constant pools, global address and external symbols, all of /// which print to a label with various suffixes for relocation types etc. |
