6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-08-26 07:29:55 +00:00
Code Issues Projects Releases Wiki Activity

Add a comment.

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100459 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2010-04-05 20:24:08 +00:00
parent 5c06a20814
commit 7b55d3665c
1 changed files with 6 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
lib/CodeGen/SelectionDAG/SelectionDAG.cpp
View File

@ -3518,6 +3518,12 @@ SDValue SelectionDAG::getMemcpy(SDValue Chain, DebugLoc dl, SDValue Dst,
true, DstSV, DstSVOff, SrcSV, SrcSVOff);
}
// FIXME: If the memcpy is volatile (isVol), lowering it to a plain libc
// memcpy is not guaranteed to be safe. libc memcpys aren't required to
// respect volatile, so they may do things like read or write memory
// beyond the given memory regions. But fixing this isn't easy, and most
// people don't care.
// Emit a library call.
TargetLowering::ArgListTy Args;
TargetLowering::ArgListEntry Entry;