llvm/lib/CodeGen, branch release_30

Merging r143194:

2011-11-01T05:08:55Z

------------------------------------------------------------------------ r143194 | chapuni | 2011-10-28 07:12:22 -0700 (Fri, 28 Oct 2011) | 7 lines Dwarf: [PR11022] Fix emitting DW_AT_const_value(>i64), to be host-endian-neutral. Don't assume APInt::getRawData() would hold target-aware endianness nor host-compliant endianness. rawdata[0] holds most lower i64, even on big endian host. FIXME: Add a testcase for big endian target. FIXME: Ditto on CompileUnit::addConstantFPValue() ? ------------------------------------------------------------------------ git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_30@143449 91177308-0d34-0410-b5e6-96231b3b80d8

Merging r143006:

2011-10-26T04:25:53Z

------------------------------------------------------------------------ r143006 | stoklund | 2011-10-25 18:47:48 -0700 (Tue, 25 Oct 2011) | 8 lines Don't use floating point to do an integer's job. This code makes different decisions when compiled into x87 instructions because of different rounding behavior. That caused phase 2/3 miscompares on 32-bit Linux when the phase 1 compiler was built with gcc (using x87), and the phase 2 compiler was built with clang (using SSE). This fixes PR11200. ------------------------------------------------------------------------ git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_30@143013 91177308-0d34-0410-b5e6-96231b3b80d8

Merging r142956:

2011-10-25T20:42:34Z

------------------------------------------------------------------------ r142956 | grosbach | 2011-10-25 13:30:48 -0700 (Tue, 25 Oct 2011) | 4 lines Make assert() message more informative. PR11217. ------------------------------------------------------------------------ git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_30@142967 91177308-0d34-0410-b5e6-96231b3b80d8

Merging r142869:

2011-10-24T23:06:48Z

------------------------------------------------------------------------ r142869 | void | 2011-10-24 16:05:43 -0700 (Mon, 24 Oct 2011) | 4 lines Check the visibility of the global variable before placing it into the stubs table. A hidden variable could potentially end up in both lists. ------------------------------------------------------------------------ git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_30@142870 91177308-0d34-0410-b5e6-96231b3b80d8

Merging r142350:

2011-10-20T20:28:08Z

------------------------------------------------------------------------ r142350 | baldrick | 2011-10-18 05:44:00 -0700 (Tue, 18 Oct 2011) | 3 lines Fix a bunch of unused variable warnings when doing a release build with gcc-4.6. ------------------------------------------------------------------------ git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_30@142609 91177308-0d34-0410-b5e6-96231b3b80d8

Clear out the landing pad to call site map for each function.

2011-10-15T01:00:26Z

This isn't put into the 'clear()' method because the information needs to stick around (at least for a little bit) after the selection DAG is built. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142032 91177308-0d34-0410-b5e6-96231b3b80d8

A few 80-col violations.

2011-10-14T20:36:23Z

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141988 91177308-0d34-0410-b5e6-96231b3b80d8

Update live-in lists when splitting critical edges.

2011-10-14T17:25:46Z

Fixes PR10814. Patch by Jan Sjödin! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141960 91177308-0d34-0410-b5e6-96231b3b80d8

Fix typo. "__sync_fetch_and-xor_4" should be "__sync_fetch_and_xor_4".

2011-10-14T15:53:48Z

Pointed out by George Russell. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141956 91177308-0d34-0410-b5e6-96231b3b80d8

Add value numbers when spilling dead defs.

2011-10-14T00:34:31Z

When spilling around an instruction with a dead def, remember to add a value number for the def. The missing value number wouldn't normally create problems since there would be an incoming live range as well. However, due to another bug we could spill a dead V_SET0 instruction which doesn't read any values. The missing value number caused an empty live range to be created which is dangerous since it doesn't interfere with anything. This fixes part of PR11125. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141923 91177308-0d34-0410-b5e6-96231b3b80d8