| commit | 1e92ec688624d17b552c88afc956f61da4948cbb | [log] [tgz] |
|---|---|---|
| author | Duncan Sands <baldrick@free.fr> | Thu Nov 04 21:16:46 2010 +0000 |
| committer | Duncan Sands <baldrick@free.fr> | Thu Nov 04 21:16:46 2010 +0000 |
| tree | d57525ff5824f627b43923e2d7f3a21c77349598 | |
| parent | 42c9b2555407a8aae2d81bf820dc95d16f4993c5 [diff] |
When passing a huge parameter using the byval mechanism, a long sequence of loads and stores was being generated to perform the copy on the x86 targets if the parameter was less than 4 byte aligned, causing llc to use up vast amounts of memory and time. Use a "rep movs" form instead. PR7170. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118260 91177308-0d34-0410-b5e6-96231b3b80d8