6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-01-03 13:31:05 +00:00
Code Issues Projects Releases Wiki Activity

Handle arguments passed in through the va_arg area

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6769 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2003-06-18 16:25:51 +00:00
parent c8621e6f28
commit 97f4b664cd
1 changed files with 7 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
lib/Transforms/IPO/DeadArgumentElimination.cpp
View File

@ -79,7 +79,13 @@ static ArgumentLiveness getArgumentLiveness(const Argument &A) {
Function *Callee = CS.getCalledFunction();
if (!Callee) return Alive;
// FIXME: check to see if it's passed through a va_arg area
// Check to see if it's passed through a va_arg area: if so, we cannot
// remove it.
unsigned NumFixedArgs = Callee->getFunctionType()->getNumParams();
for (CallSite::arg_iterator AI = CS.arg_begin()+NumFixedArgs;
AI != CS.arg_end(); ++AI)
if (AI->get() == &A) // If passed through va_arg area, we cannot remove it
return Alive;
}
return MaybeLive; // It must be used, but only as argument to a function