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| author | Lang Hames <lhames@gmail.com> | 2012-01-25 22:11:06 +0000 |
|---|---|---|
| committer | Lang Hames <lhames@gmail.com> | 2012-01-25 22:11:06 +0000 |
| commit | 58a3685916e2badd7fdec557641b056c1540c0c3 (patch) | |
| tree | 4193df67ac79f0429a35b4187096786bcb50b4de /lib/CodeGen | |
| parent | c48d4dc8a9371690f73d2d05d2297f1e1a19c952 (diff) | |
| download | external_llvm-58a3685916e2badd7fdec557641b056c1540c0c3.zip external_llvm-58a3685916e2badd7fdec557641b056c1540c0c3.tar.gz external_llvm-58a3685916e2badd7fdec557641b056c1540c0c3.tar.bz2 | |
Don't add live ranges for aliases of physregs that are live in to the
function. They don't appear to be used, and are inconsistent with handling of
other physreg intervals (i.e. intervals that are not live-in) where ranges are
not inserted for aliases.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148986 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen')
| -rw-r--r-- | lib/CodeGen/LiveIntervalAnalysis.cpp | 5 |
1 files changed, 0 insertions, 5 deletions
diff --git a/lib/CodeGen/LiveIntervalAnalysis.cpp b/lib/CodeGen/LiveIntervalAnalysis.cpp index 0e621eb..b8e60bd 100644 --- a/lib/CodeGen/LiveIntervalAnalysis.cpp +++ b/lib/CodeGen/LiveIntervalAnalysis.cpp @@ -582,11 +582,6 @@ void LiveIntervals::computeIntervals() { for (MachineBasicBlock::livein_iterator LI = MBB->livein_begin(), LE = MBB->livein_end(); LI != LE; ++LI) { handleLiveInRegister(MBB, MIIndex, getOrCreateInterval(*LI)); - // Multiple live-ins can alias the same register. - for (const unsigned* AS = tri_->getSubRegisters(*LI); *AS; ++AS) - if (!hasInterval(*AS)) - handleLiveInRegister(MBB, MIIndex, getOrCreateInterval(*AS), - true); } // Skip over empty initial indices. |