6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-09-30 19:55:11 +00:00
Code Issues Projects Releases Wiki Activity

memset_pattern16 uses a 16 BYTE pattern, not a 16 BIT pattern. Add comments to that effect.

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139205 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Owen Anderson 2011-09-06 23:43:26 +00:00
parent 69acc93b3d
commit e421ad64ff
1 changed files with 4 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
lib/Analysis/BasicAliasAnalysis.cpp
View File

@ -847,11 +847,13 @@ BasicAliasAnalysis::getModRefInfo(ImmutableCallSite CS,
const Value *Src = CS.getArgument(1);
// If it can't overlap the source dest, then it doesn't modref the loc.
if (isNoAlias(Location(Dest, Len), Loc)) {
if (isNoAlias(Location(Src, 2), Loc))
// Always reads 16 bytes of the source.
if (isNoAlias(Location(Src, 16), Loc))
return NoModRef;
// If it can't overlap the dest, then worst case it reads the loc.
Min = Ref;
} else if (isNoAlias(Location(Src, 2), Loc)) {
// Always reads 16 bytes of the source.
} else if (isNoAlias(Location(Src, 16), Loc)) {
// If it can't overlap the source, then worst case it mutates the loc.
Min = Mod;
}