Add comments for turning on byval

llvm-svn: 161702
2012-08-10 21:32:09 +00:00 · 2012-08-10 21:32:09 +00:00 · 804137fd75
parent f32302a7d9
commit 804137fd75
1 changed files with 2 additions and 0 deletions
--- a/clang/lib/CodeGen/TargetInfo.cpp
+++ b/clang/lib/CodeGen/TargetInfo.cpp
@ -2757,6 +2757,8 @@ ABIArgInfo ARMABIInfo::classifyArgumentType(QualType Ty) const {
    }
  }

+  // Turn on byval for APCS and AAPCS.
+  // FIXME: turn on byval for AAPCS_VFP for performance.
  if (getABIKind() == ARMABIInfo::APCS || getABIKind() == ARMABIInfo::AAPCS) {
    if (getContext().getTypeSizeInChars(Ty) > CharUnits::fromQuantity(64) ||
        getContext().getTypeAlign(Ty) > 64) {