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59134 Commits

Author SHA1 Message Date
Dan Gohman ecb20c12a2 Add an explicit keyword. 
llvm-svn: 100187
 2010-04-02 14:57:49 +00:00
Dan Gohman f7239102fe Manually notify ScalarEvolution before making an operand replacement, since 
it can't currently observe such changes automatically.

llvm-svn: 100186
 2010-04-02 14:48:31 +00:00
Torok Edwin 3645e95c91 Fix SpecificBumpPtrAllocator iteration. 
Need to start from (char*)(Slab+1), and not from (char*)Slab+1.
This fixes crashes in Win64 debug mode.
Thanks to Nicolas Capens!

llvm-svn: 100184
 2010-04-02 13:20:51 +00:00
Duncan Sands 92452b9e12 Add notes about dragonegg. 
llvm-svn: 100183
 2010-04-02 09:23:15 +00:00
Bob Wilson 3c54edf9b3 Recommit 100158 now that the buildbots are happy again. 
llvm-svn: 100177
 2010-04-02 05:09:46 +00:00
Eric Christopher 06a1639b98 Remove FIXME - if there's a better way to do this it isn't here. 
llvm-svn: 100176
 2010-04-02 04:32:37 +00:00
Dan Gohman 4bd755419f Revert the recent alignment changes. They're broken for -Os because, 
in particular, they end up aligning strings at 16-byte boundaries, and
there's no way for GlobalOpt to check OptForSize.

llvm-svn: 100172
 2010-04-02 03:04:37 +00:00
Evan Cheng 604bc162da After trivial coalescing, the MI being visited may have become a copy. Avoid adding it to CSE hash table since copies aren't being considered for CSE and they may be deleted. 
rdar://7819990

llvm-svn: 100170
 2010-04-02 02:21:24 +00:00
Dale Johannesen 4244d12769 Teach AnalyzeBranch, RemoveBranch and the branch 
folder to be tolerant of debug info following the
branch(es) at the end of a block.

llvm-svn: 100168
 2010-04-02 01:38:09 +00:00
Chandler Carruth 8d6d0d4c58 Disambiguate conditional expression for newer GCCs. 
llvm-svn: 100167
 2010-04-02 01:31:24 +00:00
Dan Gohman 8ceeeb444e Remove this initializer so that the optimizer doesn't convert 
unaligned loads into aligned loads.

llvm-svn: 100166
 2010-04-02 01:26:13 +00:00
Dan Gohman ffb9c71174 Update this test for the new preferred alignment heuristics. 
llvm-svn: 100165
 2010-04-02 01:24:08 +00:00
Bob Wilson 0389adcd73 Revert 100158 in case it is causing some of the buildbot problems. 
llvm-svn: 100164
 2010-04-02 01:22:49 +00:00
Sean Callanan dfc8a75755 Updated the install location for EnhancedDisassembly 
on Mac OS X to use @rpath rather than an absolute
path.  Also allowed the version to be set using an
environment variable.

llvm-svn: 100163
 2010-04-02 00:53:42 +00:00
Dan Gohman 0e3218f6af Change variables which are exactly 16 bytes to be 16-byte-aligned too. 
This fixes test/Transforms/GlobalOpt/gv-align.ll.

llvm-svn: 100161
 2010-04-02 00:46:07 +00:00
Dan Gohman c671347fcb Make globalopt refine global variable alignment. 
llvm-svn: 100160
 2010-04-02 00:14:16 +00:00
Bob Wilson 9af4e118c6 Check for terminating conditions before adding PHIs to the worklists. 
This is more efficient than adding them to the worklist and then ignoring them.

llvm-svn: 100158
 2010-04-02 00:10:41 +00:00
Dan Gohman e447aeb9fe If the bitcode reader input stream isn't a multiple of 4 bytes, it's more 
likely not a bitcode file at all, rather than being a bitcode file which
is truncated. Check for this case and issue a more relevant error message.

llvm-svn: 100156
 2010-04-02 00:03:51 +00:00
Bob Wilson 737195069a Remove trailing whitespace. 
llvm-svn: 100148
 2010-04-01 23:06:38 +00:00
Bob Wilson 37b73d9d3e Rewrite another SSAUpdater function to avoid recursion. 
llvm-svn: 100147
 2010-04-01 23:05:58 +00:00
Eric Christopher 5342ddaadf Revert r100143. 
llvm-svn: 100146
 2010-04-01 22:54:42 +00:00
Devang Patel 18737b2a81 Revert r100117. 
llvm-svn: 100145
 2010-04-01 22:47:29 +00:00
David Greene 6789e21094 Add some switches helpful for debugging: 
-print-before=<Pass Name>

Dump IR before running pass <Pass Name>.

-print-before-all

Dump IR before running each pass.

-print-after-all

Dump IR after running each pass.

These are helpful when tracking down a miscompilation.  It is easy to
get IR dumps and do diffs on them, etc.

To make this work well, add a new getPrinterPass API to Pass so that
each kind of pass (ModulePass, FunctionPass, etc.) can create a Pass
suitable for dumping out the kind of object the Pass works on.

llvm-svn: 100143
 2010-04-01 22:43:57 +00:00
Evan Cheng f997c31598 In 64-bit mode, use i64 to lower memcpy / memset instead of f64. 
llvm-svn: 100137
 2010-04-01 20:27:45 +00:00
Devang Patel 15676e5167 Do not eagerly record known previous location. DBG_VALUE may not cause a new label due to one or other reason. 
llvm-svn: 100134
 2010-04-01 20:22:44 +00:00
Evan Cheng 8563ee4ed4 Skip checking preferred alignment of GVs defined in other translation units all together. 
llvm-svn: 100133
 2010-04-01 20:13:28 +00:00
Evan Cheng d9929f03cf Add comments about DstAlign and SrcAlign. 
llvm-svn: 100132
 2010-04-01 20:10:42 +00:00
Bob Wilson 8409feadf0 Change another SSAUpdater function to avoid recursion. 
llvm-svn: 100131
 2010-04-01 20:04:30 +00:00
Bob Wilson 043c0406f7 Simplify the code to check for existing PHIs, now that it is only used in 
one place.  This removes the template function added in svn 94690.

llvm-svn: 100130
 2010-04-01 19:53:48 +00:00
Bob Wilson 38fc88ee5d The SSAUpdater should avoid recursive traversals of the CFG, since that may 
blow out the stack for really big functions.  Start by fixing an easy case.

llvm-svn: 100126
 2010-04-01 18:46:59 +00:00
Evan Cheng 4c014c892a - Avoid using floating point stores to implement memset unless the value is zero. 
- Do not try to infer GV alignment unless its type is sized. It's not possible to infer alignment if it has opaque type.

llvm-svn: 100118
 2010-04-01 18:19:11 +00:00
Devang Patel 1a55ef0427 Skip instructions until new scope is seen. 
llvm-svn: 100117
 2010-04-01 17:32:01 +00:00
Devang Patel 4c603b1c4e Cosmetic changes. 
Update comment, rename a local variable.

llvm-svn: 100116
 2010-04-01 17:16:48 +00:00
Benjamin Kramer 15630f8238 Remove accidental include and add a comment. 
llvm-svn: 100107
 2010-04-01 14:39:55 +00:00
Benjamin Kramer 10b0f3b314 Various improvements to MemoryBuffer::getFile: 
- Use a RAII object to close the FD.
- Use sys::StrError instead of thread-unsafe strerror calls.
- Recover gracefully if read returns zero. This works around an issue on
  DragonFlyBSD where /dev/null has an st_size of 136 but we can't read 136 bytes
  from it.

llvm-svn: 100106
 2010-04-01 14:35:22 +00:00
Evan Cheng 1e8ee79957 Add -mcpu to memcpy / memset tests to ensure they behave the same on all hosts / targets. 
llvm-svn: 100101
 2010-04-01 08:25:26 +00:00
Gabor Greif 5d5db5342b Introduce ImmutableCallSite, useful for contexts where no mutation 
is necessary. Inherits from new templated baseclass CallSiteBase<>
which is highly customizable. Base CallSite on it too, in a configuration
that allows full mutation.
Adapt some call sites in analyses to employ ImmutableCallSite.

llvm-svn: 100100
 2010-04-01 08:21:08 +00:00
Nick Lewycky bfb50a0d43 Clean up this file a little, no functionality change. This is a subset of my 
patch back in r94322.

llvm-svn: 100097
 2010-04-01 07:34:00 +00:00
Chris Lattner e4bcde8db5 switch IRBuilder to use NewDebugLoc for locations instead 
of raw mdnodes.  This allows frontends to specify debug
locations without ever creating an MDNode for the DILocation.

This requires a corresponding clang/llvm-gcc change which
I'll try to commit as simultaneously as possible.

llvm-svn: 100095
 2010-04-01 06:31:45 +00:00
Chris Lattner a22de1fa9f add comments, don't require inlined-at to be specified. 
llvm-svn: 100092
 2010-04-01 06:29:56 +00:00
Evan Cheng 43cd9e3845 Fix sdisel memcpy, memset, memmove lowering: 
1. Makes it possible to lower with floating point loads and stores.
2. Avoid unaligned loads / stores unless it's fast.
3. Fix some memcpy lowering logic bug related to when to optimize a
   load from constant string into a constant.
4. Adjust x86 memcpy lowering threshold to make it more sane.
5. Fix x86 target hook so it uses vector and floating point memory
   ops more effectively.
rdar://7774704

llvm-svn: 100090
 2010-04-01 06:04:33 +00:00
Evan Cheng 738b0f9ec7 Nehalem unaligned memory access is fast. 
llvm-svn: 100089
 2010-04-01 05:58:17 +00:00
Chris Lattner c0f5ce32d5 Switch the representation of the location in instruction from 
being a TrackingVH<MDNode> to a NewDebugLoc, shrinking 
sizeof(Instruction) a lot, and providing clients the ability
to deal with locations in terms of NewDebugLoc instead of
having to deal with Metadata.  This is still fully compatible
with all clients that *do* use MDNodes for everything of
course.

No functionality change.

llvm-svn: 100088
 2010-04-01 05:23:13 +00:00
Chris Lattner e04505e717 include header. 
llvm-svn: 100087
 2010-04-01 05:20:21 +00:00
Chris Lattner 8eff0157b2 rewrite handling of forward ref'd instruction metadata 
to used deferred resolution instead of creating a temporary
node + rauw.  There is no reason to create the temporary
mdnode, then do rauw, then destroy it.

llvm-svn: 100086
 2010-04-01 05:14:45 +00:00
Chris Lattner 6159249891 change this from using '!dbg' to using '!dbgx'. The 
MD used here isn't valid for !dbg.

llvm-svn: 100085
 2010-04-01 05:13:10 +00:00
Chris Lattner cf25a89bb7 fix a bug in DebugRecVH::deleted/allUsesReplacedWith. If an 
entry in the Scope+InlinedAt drops to a non-canonical form,
we need to reset the idx member of both VH's to 0.

llvm-svn: 100084
 2010-04-01 05:12:07 +00:00
Chris Lattner dba4346e91 no really, we don't need to copy strings around in the accessor. 
llvm-svn: 100083
 2010-04-01 04:53:22 +00:00
Chris Lattner ef0ec99665 eliminate a temporary smallvector 
llvm-svn: 100082
 2010-04-01 04:51:13 +00:00
Chris Lattner 56e4b4a913 add a method to decode a DILocation into a NewDebugLoc. 
llvm-svn: 100081
 2010-04-01 03:55:42 +00:00