diff options
Diffstat (limited to 'clang/lib/CodeGen/TargetInfo.cpp')
| -rw-r--r-- | clang/lib/CodeGen/TargetInfo.cpp | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/clang/lib/CodeGen/TargetInfo.cpp b/clang/lib/CodeGen/TargetInfo.cpp index fff67675c8e..baaf8378a5f 100644 --- a/clang/lib/CodeGen/TargetInfo.cpp +++ b/clang/lib/CodeGen/TargetInfo.cpp @@ -1146,6 +1146,10 @@ void X86_32ABIInfo::computeInfo(CGFunctionInfo &FI) const { } } + // The chain argument effectively gives us another free register. + if (FI.isChainCall()) + ++State.FreeRegs; + bool UsedInAlloca = false; for (auto &I : FI.arguments()) { I.info = classifyArgumentType(I.type, State); @@ -2687,6 +2691,10 @@ void X86_64ABIInfo::computeInfo(CGFunctionInfo &FI) const { if (FI.getReturnInfo().isIndirect()) --freeIntRegs; + // The chain argument effectively gives us another free register. + if (FI.isChainCall()) + ++freeIntRegs; + unsigned NumRequiredArgs = FI.getNumRequiredArgs(); // AMD64-ABI 3.2.3p3: Once arguments are classified, the registers // get assigned (in left-to-right order) for passing as follows... |
