diff options
Diffstat (limited to 'llvm/lib/Target/X86/X86FastISel.cpp')
| -rw-r--r-- | llvm/lib/Target/X86/X86FastISel.cpp | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/llvm/lib/Target/X86/X86FastISel.cpp b/llvm/lib/Target/X86/X86FastISel.cpp index 943022585a1..3806d2dad3d 100644 --- a/llvm/lib/Target/X86/X86FastISel.cpp +++ b/llvm/lib/Target/X86/X86FastISel.cpp @@ -3174,6 +3174,13 @@ bool X86FastISel::fastLowerCall(CallLoweringInfo &CLI) { CLI.CS ? dyn_cast<CallInst>(CLI.CS->getInstruction()) : nullptr; const Function *CalledFn = CI ? CI->getCalledFunction() : nullptr; + // Call / invoke instructions with NoCfCheck attribute require special + // handling. + const auto *II = + CLI.CS ? dyn_cast<InvokeInst>(CLI.CS->getInstruction()) : nullptr; + if ((CI && CI->doesNoCfCheck()) || (II && II->doesNoCfCheck())) + return false; + // Functions with no_caller_saved_registers that need special handling. if ((CI && CI->hasFnAttr("no_caller_saved_registers")) || (CalledFn && CalledFn->hasFnAttribute("no_caller_saved_registers"))) |
