Commit Graph

28813 Commits

Author SHA1 Message Date
Evan Cheng
e7d6df7353 Add a ARM specific pre-allocation pass that re-schedule loads / stores from
consecutive addresses togther. This makes it easier for the post-allocation pass
to form ldm / stm.

This is step 1. We are still missing a lot of ldm / stm opportunities because
of register allocation are not done in the desired order. More enhancements
coming.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73291 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-13 09:12:55 +00:00
Devang Patel
daf9e02893 llvm.dbg.region.end() intrinsic is not required to be in _last_ basic block in a function. If that happens then any basic block that follows (lexically) the block with regin.end will not have scope info available. LexicalScopeStack relies on processing basic block in CFG order, but this processing order is not guaranteed. Things get complicated when the optimizer gets a chance to optimizer IR with dbg intrinsics.
Apply defensive patch to preserve at least one lexical scope till the end of function.




git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73282 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-13 02:16:18 +00:00
Owen Anderson
a21f31bca5 Improve style.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73258 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-12 22:07:19 +00:00
Owen Anderson
5b6139a4d1 This is supposed to be a preorder numbering of the dominator tree, not the CFG.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73257 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-12 21:50:22 +00:00
Owen Anderson
fdf72c6607 Now with less iterator invalidation, and other forms of crashing!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73256 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-12 21:41:29 +00:00
Evan Cheng
4a274e573d If killed register is defined by implicit_def, do not clear it since it's live range may overlap another def of same register.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73255 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-12 21:34:26 +00:00
Chris Lattner
69074a51f9 second half of fix for PR4366: don't zap store to null of
non-default addrspaces.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73253 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-12 21:01:07 +00:00
Evan Cheng
cd799b99cb Mark some pattern-less instructions as neverHasSideEffects.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73252 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-12 20:46:18 +00:00
Devang Patel
9217f793bf Clear AbstractInstanceRootMap at the end of the function.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73244 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-12 19:24:05 +00:00
Dan Gohman
e54aba5fa9 Don't do (x - (y - z)) --> (x + (z - y)) on floating-point types, because
it may round differently. This fixes PR4374.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73243 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-12 19:23:25 +00:00
Dan Gohman
194ae785e1 Give Instruction::isSameOperationAs a corresponding comment to note
the relationship with MergeFunctions.cpp's isEquivalentOperation,
and make a trivial code reordering so that the two functions are
easier to compare.

Fix the name of Instruction::isSameOperationAs in MergeFunction.cpp's
isEquivalentOperation's comment, and fix a nearby 80-column violation.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73241 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-12 19:03:05 +00:00
Nick Lewycky
93531e4986 Keep callers of a weak function calling it, instead of the non-weak equivalent.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73235 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-12 17:16:48 +00:00
Arnold Schwaighofer
bbd8c33ee6 Fix Bug 4278: X86-64 with -tailcallopt calling convention
out of sync with regular cc.

The only difference between the tail call cc and the normal
cc was that one parameter register - R9 - was reserved for
calling functions through a function pointer. After time the
tail call cc has gotten out of sync with the regular cc. 

We can use R11 which is also caller saved but not used as
parameter register for potential function pointers and
remove the special tail call cc on x86-64.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73233 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-12 16:26:57 +00:00
Nick Lewycky
b3c36c9c9a Don't forget to match the calling convention when producing a thunk.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73231 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-12 16:04:00 +00:00
Nick Lewycky
8728d7a3ea Given two identical weak functions, produce one internal function and two weak
thunks.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73230 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-12 15:56:56 +00:00
Nicolas Geoffray
e91208c963 After obtaining the lock, look if the function has been codegen'd by
another thread.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73227 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-12 14:11:08 +00:00
Nick Lewycky
287de607dc Add an "are types equivalent" operation that ignores the types that a pointer
points to while analyzing all other fields.

Use FoldingSetNodeID to produce a good hash. This dramatically decreases run
times.

Emit thunks. This means that it can look at all functions regardless of what
the linkage is or if the address is taken, but unfortunately some small
functions can be even shorter than the thunk because our backend doesn't yet
realize it can just turn these into jumps. This means that this pass will
pessimize code on average.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73222 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-12 08:04:51 +00:00
Nick Lewycky
f7e498138f Don't remove aggregate-typed module level constants before encoding functions
since functions may contain aggregate constants too.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73220 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-12 05:20:12 +00:00
Eli Friedman
7161cb1dad Misc x86 README updates: remove a couple of already-fixed issues,
add a few suggestions from looking at some assembly code.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73210 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-11 23:07:04 +00:00
Bruno Cardoso Lopes
d00d4159d4 Use forward declarations and move TargetELFWriterInfo impl to a new file.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73209 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-11 22:13:00 +00:00
Bruno Cardoso Lopes
c997d45ae5 Support for ELF Visibility
Emission for globals, using the correct data sections
Function alignment can be computed for each target using TargetELFWriterInfo
Some small fixes



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73201 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-11 19:16:03 +00:00
Chris Lattner
3590abfda0 Fix 4366: store to null in non-default addr space should not be
turned into unreachable.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73195 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-11 17:54:56 +00:00
Sanjiv Gupta
6396329d52 Generate libcalls for floating point arithmetic and casting operations.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73194 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-11 16:50:48 +00:00
Duncan Sands
d6de30ceea Cosmetic changes to parameter attribute verification.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73188 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-11 08:11:03 +00:00
Duncan Sands
861d20aab4 Avoid leaking memory in an error path. Noticed
by cppcheck.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73187 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-11 08:09:49 +00:00
Sanjiv Gupta
fa3f80a2b7 More formatting.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73185 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-11 06:55:48 +00:00
Sanjiv Gupta
b65d1f23ca Fixed source comments. No functionality change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73184 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-11 06:49:55 +00:00
Oscar Fuentes
89456cecb3 CMake: Updated list of files on lib/CodeGen/CMakeLists.txt.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73174 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-10 22:53:59 +00:00
Jay Foad
757068f3ba Implement and use new method Function::hasAddressTaken().
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73164 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-10 08:41:11 +00:00
Sanjiv Gupta
cb597c9cc4 Remove warnings: no newline at end of file.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73156 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-10 03:42:13 +00:00
Anton Korobeynikov
b51b6cf1d0 Silence a warning
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73152 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-09 23:00:39 +00:00
Jay Foad
e3acf159d9 Remove an unused function SafeToDestroyConstant(). Rename an almost
identical function ConstantIsDead() to SafeToDestroyConstant(), to
emphasise the connection with Constant::destroyConstant().

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73149 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-09 21:37:11 +00:00
Bill Wendling
3ae67f5910 Simplified logic of this if-then statement to reduce nesting. No functionality
change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73143 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-09 20:08:51 +00:00
Owen Anderson
6cbd8da86e Add the beginnings of an implementatation of lazy liveness analysis, based on "Fast Liveness Checking for SSA-form Programs" by Boissinot, et al.
This is still very early, hasn't been tested, and is not yet well documented.  More to come soon.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73141 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-09 19:30:45 +00:00
Dan Gohman
92fcdcac54 Use expandCodeFor instead of expand when the result will be
immediately casted. At present, this is just a minor code
simplification. In the future, the expansion code may be able
to make better choices if it knows what the desired result
type will be.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73137 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-09 17:18:38 +00:00
Sanjiv Gupta
b157f25926 PIC16 emits auto variables as globals. When optimizer removes a function entierly by estimating its side effects on globals, those globals(autos) without a function were not being printed by the Asm printer.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73135 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-09 15:31:19 +00:00
Anton Korobeynikov
2e7ccfce98 Typo
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73098 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-08 22:59:50 +00:00
Anton Korobeynikov
dada95b5b3 Revert hunk commited by accident
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73097 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-08 22:57:18 +00:00
Anton Korobeynikov
0eebf653a7 The attached patches implement most of the ARM AAPCS-VFP hard float
ABI. The missing piece is support for putting "homogeneous aggregates"
into registers.

Patch by Sandeep Patel!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73095 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-08 22:53:56 +00:00
Anton Korobeynikov
fbbf1eeccf Separate V6 from V6T2 since the latter has some extra nice instructions
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73085 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-08 21:20:36 +00:00
Anton Korobeynikov
a7b0ded2a2 Add helper for checking of Thumb1 mode
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73080 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-08 20:31:02 +00:00
Bill Wendling
faf2671776 Revert r72898. It does not solve the problem I want it to solve.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73075 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-08 18:18:28 +00:00
Bruno Cardoso Lopes
06bfa33eef Delete comment and fix typo
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73040 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-07 21:49:11 +00:00
Bruno Cardoso Lopes
24f14f16fd Fix wrong elf class and byte order initializations.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73039 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-07 21:33:20 +00:00
Bruno Cardoso Lopes
a029a27fae Simple ELF32/64 binary files can now be emitted for x86 and x86_64 without
relocation sections.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73038 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-07 21:22:38 +00:00
Eli Friedman
f10d3a7bcd Tweak the expansion code for BIT_CONVERT to generate better code
converting from an MMX vector to an i64.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73024 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-07 09:41:57 +00:00
Eli Friedman
5d28eb9e97 Get rid of some unnecessary code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73017 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-07 07:28:45 +00:00
Nick Lewycky
a5f54a06b0 Create FunctionType::isValidArgumentType to go along with isValidReturnType.
Also create isValidElementType for ArrayType, PointerType, StructType and
VectorType.

Make LLParser use them. This closes up some holes like an assertion failure on:

  %x = type {label}

but largely doesn't change any semantics. The only thing we accept now which
we didn't before is vectors of opaque type such as "<4 x opaque>". The opaque
can be resolved to an int or float when linking.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73016 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-07 07:26:46 +00:00
Eli Friedman
7a5e55509b Slightly generalize the code that handles shuffles of consecutive loads
on x86 to handle more cases.  Fix a bug in said code that would cause it 
to read past the end of an object.  Rewrite the code in 
SelectionDAGLegalize::ExpandBUILD_VECTOR to be a bit more general. 
Remove PerformBuildVectorCombine, which is no longer necessary with 
these changes.  In addition to simplifying the code, with this change, 
we can now catch a few more cases of consecutive loads.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73012 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-07 06:52:44 +00:00
Nick Lewycky
dcef849ab0 Remove cyclic MDNode detection. Any attempt to create a cyclic MDNode will
crash LLVM first.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73011 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-07 04:03:01 +00:00