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Author SHA1 Message Date
Duncan Sands
a3e292c7e8 Thread divisions over selects and phis. This doesn't fire much and has basically 
zero effect on the testsuite (it improves two Ada testcases).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124496 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-28 18:50:50 +00:00
Bob Wilson
d11c57a937 PR9030: Fix disassembly of ARM "mov pc, lr" instruction. 
Patch by Jyun-Yan You.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124492 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-28 17:50:30 +00:00
Duncan Sands
593faa53fa My auto-simplifier noticed that ((X/Y)*Y)/Y occurs several times in SPEC 
benchmarks, and that it can be simplified to X/Y.  (In general you can only
simplify (Z*Y)/Y to Z if the multiplication did not overflow; if Z has the
form "X/Y" then this is the case).  This patch implements that transform and
moves some Div logic out of instcombine and into InstructionSimplify.
Unfortunately instcombine gets in the way somewhat, since it likes to change
(X/Y)*Y into X-(X rem Y), so I had to teach instcombine about this too.
Finally, thanks to the NSW/NUW flags, sometimes we know directly that "Z*Y"
does not overflow, because the flag says so, so I added that logic too.  This
eliminates a bunch of divisions and subtractions in 447.dealII, and has good
effects on some other benchmarks too.  It seems to have quite an effect on
tramp3d-v4 but it's hard to say if it's good or bad because inlining decisions
changed, resulting in massive changes all over.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124487 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-28 16:51:11 +00:00
Oscar Fuentes
abcae24d99 Fix libffi usage when it is on a custom path. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124486 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-28 16:49:05 +00:00
Roman Divacky
14e66553d5 Add support for parsing .float 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124485 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-28 14:20:32 +00:00
Nick Lewycky
468ee0a90d Rename functions to follow coding standard. Also rejiggers comments. No 
functionality change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124482 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-28 08:43:14 +00:00
Nick Lewycky
8b5964381e Add a doxygen comment for this class. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124480 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-28 08:19:00 +00:00
Nick Lewycky
285cf8040d Reorder for readability. (Chris, is this what you meant?) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124479 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-28 07:36:21 +00:00
Evan Cheng
1b5c0cb71d Revert r124462. There are a few big regressions that I need to fix first. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124478 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-28 07:12:38 +00:00
Nick Lewycky
07317f7d33 Reduce the number of functions we look at in the first pass, and preallocate 
the function equality set.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124475 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-28 05:48:15 +00:00
Nick Lewycky
ed4efd3358 Fix build with stdcxx by using llvm::next. Patch by Joerg Sonnenberger! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124472 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-28 04:00:15 +00:00
Nick Lewycky
df3bfae151 Fold select + select where both selects are on the same condition. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124469 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-28 03:28:10 +00:00
Rafael Espindola
1ffb533699 Print the visibility of declarations. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124468 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-28 03:20:10 +00:00
Nico Weber
4c4c732960 PR8951: Support for .equiv in integrated assembler, patch by Jörg Sonnenberger! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124467 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-28 03:04:41 +00:00
Evan Cheng
40f64cb0de - Stop simplifycfg from duplicating "ret" instructions into unconditional 
branches. PR8575, rdar://5134905, rdar://8911460.
- Allow codegen tail duplication to dup small return blocks after register
  allocation is done.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124462 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-28 02:19:21 +00:00
Evan Cheng
c3a20bab75 Fix PLD encoding. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124458 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-27 23:48:34 +00:00
Kevin Enderby
9e56fb12c5 Changed llvm-mc arm target to give an error if .syntax divided is used. Since 
only .syntax unified is supported.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124454 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-27 23:22:36 +00:00
Oscar Fuentes
11d23bd890 Use the paths to libffi's header and library even when no custom 
location was stated with FFI_INCLUDE_DIR/FFI_LIBRARY_DIR.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124449 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-27 22:58:34 +00:00
David Greene
54d8ebafc7 [AVX] Clean up the code to configure target lowering for AVX. Specify 
how to lower more/new operations.  This is a prerequisite for adding
additional AVX lowering.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124447 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-27 22:38:56 +00:00
Andrew Trick
e787ddb510 Remove a temporary workaround for a lencod miscompile. Depends on the fix in r124442. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124443 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-27 21:28:51 +00:00
Andrew Trick
5d7ab8503b VirtRegRewriter fix: update kill flags, which are used by the scavenger. 
rdar://problem/8893967: JM/lencod miscompile at -arch armv7 -mthumb -O3

Added ResurrectKill to remove kill flags after we decide to reused a
physical register. And (hopefully) ensure that we call it in all the
right places.

Sorry, I'm not checking in a unit test given that it's a miscompile I
can't reproduce easily with a toy example. Failures in the rewriter
depend on a series of heuristic decisions maked during one of the many
upstream phases in codegen. This case would require coercing regalloc
to generate a couple of rematerialzations in a way that causes the
scavenger to reuse the same register at just the wrong point.

The general way to test this is to implement kill flags
verification. Then we could have a simple, robust compile-only unit
test. That would be worth doing if the whole pass was not about to
disappear. At this point we focus verification work on the next
generation of regalloc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124442 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-27 21:26:43 +00:00
Benjamin Kramer
9c1858cf4a Unbreak the build. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124426 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-27 20:30:54 +00:00
Nick Lewycky
c9d69489eb Expound upon this comparison! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124406 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-27 19:51:31 +00:00
Nick Lewycky
dfc5972974 Use dyn_cast instead of isa+cast. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124404 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-27 19:42:43 +00:00
Devang Patel
7e7fc1052a Speculatively revert r124380. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124397 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-27 19:15:01 +00:00
Devang Patel
bfae5f312c While legalizing SDValues do not drop SDDbgValues, trasfer them to new legal nodes. 
Take 2. This includes fix for dragonegg crash.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124380 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-27 17:43:53 +00:00
Roman Divacky
54b0f4f2a4 Add support for specifying register name in cfi-register/offset/def 
as well as register number.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124379 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-27 17:16:37 +00:00
Roman Divacky
bf7553210a Introduce virtual ParseRegister method in TargetAsmParser. 
Create override of this method in X86/ARM/MBlaze.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124378 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-27 17:14:22 +00:00
Jay Foad
9afc527671 Fix indentation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124375 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-27 14:44:55 +00:00
Nick Lewycky
25296e25fd Fix surprising missed optimization in mergefunc where we forgot to consider 
that relationships like "i8* null" is equivalent to "i32* null".


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124368 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-27 08:38:19 +00:00
Bob Wilson
adf9c8b0e7 Avoid modifying the OneClassForEachPhysReg map while iterating over it. 
Linear scan regalloc is currently assuming that any register aliased with
a member of a regclass must also be in at least one regclass.  That is not
always true.  For example, for X86, RIP is in a regclass but IP is not.
If you're unlucky, this can cause a crash by invalidating the iterator.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124365 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-27 07:26:15 +00:00
Eric Christopher
4a2b316762 Use the incoming VT not the VT of where we're trying to store to determine 
if we can store a value. Also, the exclusion is or, not and.

Fixes rdar://8920247.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124357 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-27 05:44:56 +00:00
NAKAMURA Takumi
40ccb798cc lib/Target/X86/X86ISelDAGToDAG.cpp: __main should be WINCALL64 on Win64. 
CALL64 marks %xmm* as dead.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124354 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-27 03:20:19 +00:00
Matt Beaumont-Gay
4789aca85e Try harder to not have unused variables. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124350 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-27 02:39:27 +00:00
Matt Beaumont-Gay
a8af137847 Opt-mode -Wunused-variable cleanup 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124346 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-27 01:47:50 +00:00
Devang Patel
39078a8bde Reapply 124301 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124339 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-27 00:13:27 +00:00
Bill Wendling
6b9a293a0c Initialize variable to get rid of clang warning. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124331 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-26 22:21:35 +00:00
Jay Foad
adede0387b Simplify User::operator delete(). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124330 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-26 21:56:10 +00:00
Devang Patel
4a95c19977 Revert 124301. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124327 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-26 21:41:22 +00:00
Devang Patel
c47fd9fbf5 Revert r124302 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124320 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-26 21:12:32 +00:00
Bill Wendling
8cb415e4c0 Add support for printing out floating point values from the ARM assembly 
parser. The parser will always give us a binary representation of the floating
point number.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124318 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-26 20:57:43 +00:00
Eric Christopher
eabde0cf07 Temporarily revert 124275 to see if it brings the dragonegg buildbot back. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124312 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-26 19:40:31 +00:00
David Greene
cfe33c46aa [AVX] Add INSERT_SUBVECTOR and support it on x86. This provides a 
default implementation for x86, going through the stack in a similr
fashion to how the codegen implements BUILD_VECTOR.  Eventually this
will get matched to VINSERTF128 if AVX is available.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124307 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-26 19:13:22 +00:00
Devang Patel
d2c9793bdf While legalizing SDValues do not drop SDDbgValues, trasfer them to new legal nodes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124302 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-26 18:55:05 +00:00
Devang Patel
6f121fdede Process valid SDDbgValues even if the node does not have any order assigned. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124301 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-26 18:42:32 +00:00
Devang Patel
55d20e8ff1 Refactor. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124300 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-26 18:20:04 +00:00
David Greene
91585098ef [AVX] Support EXTRACT_SUBVECTOR on x86. This provides a default 
implementation of EXTRACT_SUBVECTOR for x86, going through the stack
in a similr fashion to how the codegen implements BUILD_VECTOR.
Eventually this will get matched to VEXTRACTF128 if AVX is available.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124292 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-26 15:38:49 +00:00
Bruno Cardoso Lopes
1b10d5be40 fix the encoding and add testcases for ARM nop, yield, wfe and wfi instructions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124288 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-26 13:28:14 +00:00
Duncan Sands
37f87c7aa9 Fix PR9039, a use-after-free in reassociate. The issue was that the 
operand being factorized (and erased) could occur several times in Ops,
resulting in freed memory being used when the next occurrence in Ops was
analyzed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124287 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-26 10:08:38 +00:00
Nick Lewycky
f6c63c2320 AttrListPtr has an overloaded operator== which does this for us, we should use 
it. No functionality change!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124286 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-26 09:23:19 +00:00
Nick Lewycky
207c193e7e Teach mergefunc that intptr_t is the same width as a pointer. We still can't 
merge vector<intptr_t>::push_back() and vector<void*>::push_back() because
Enumerate() doesn't realize that "i64* null" and "i8** null" are equivalent.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124285 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-26 09:13:58 +00:00
Nick Lewycky
388f4918fb There are no vectors of pointer or arrays, so we don't need to check vector 
elements for type equivalence.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124284 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-26 08:50:18 +00:00
Duncan Sands
464a4f349c APInt has a method for determining whether a number is a power of 2 
which is more efficient than countPopulation - use it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124283 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-26 08:44:16 +00:00
Nick Lewycky
e19b7b80bd Fix memory corruption. If one of the SCEV creation functions calls another but 
doesn't return immediately after then the insert position in UniqueSCEVs will
be out of date. No test because this is a memory corruption issue. Fixes PR9051!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124282 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-26 08:40:22 +00:00
Eric Christopher
5d83955b8c Separate out the constant bonus from the size reduction metrics. Rework 
a few loops accordingly. Should be no functional change.

This is a step for more accurate cost/benefit analysis of devirt/inlining
bonuses.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124275 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-26 02:58:39 +00:00
Bill Wendling
717082b9bd Add needed braces. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124273 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-26 02:06:22 +00:00
NAKAMURA Takumi
7754f85885 Target/X86: Tweak win64's tailcall. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124272 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-26 02:04:09 +00:00
NAKAMURA Takumi
e5fffe9c3f Fix whitespace. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124270 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-26 02:03:37 +00:00
NAKAMURA Takumi
c5b7a4223d lib/Target/X86/X86RegisterInfo.cpp: Fix whitespace. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124268 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-26 01:28:06 +00:00
NAKAMURA Takumi
b901076387 lib/Target/X86/X86RegisterInfo.cpp: Fix a typo in comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124267 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-26 01:27:58 +00:00
Eric Christopher
7d3a16f687 Coding style formatting changes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124260 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-26 01:09:59 +00:00
Jakob Stoklund Olesen
078628465b Rename member variables to follow the rest of LLVM. 
No functional change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124257 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-26 00:50:53 +00:00
Devang Patel
a2e868d34c Provide an interface to transfer SDDbgValue from one SDNode to another. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124245 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-25 23:27:42 +00:00
Bill Wendling
0f4db7efa1 Revert 124230. It was causing test failures. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124233 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-25 21:48:36 +00:00
Bill Wendling
261b9c1a35 The floating point value is encoded in its binary form as an Imm. Convert it 
appropriately so that it prints out the decimal representation.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124230 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-25 21:27:46 +00:00
Bill Wendling
69c4ef321c Add support for parsing a Real value. It stores the Real value as its binary 
encoding. It's up to the individual back-ends to convert it to their preferred
representation when printing.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124229 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-25 21:26:41 +00:00
Rafael Espindola
3971df5203 Move unnamed_addr after the function arguments on Sabre's request. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124209 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-25 19:09:56 +00:00
Devang Patel
8f31428119 Resolve DanglingDbgValue of PHI nodes where the use follows dbg.value intrinisic. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124203 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-25 18:09:58 +00:00
Devang Patel
3a00ffacdc This assertion is too restrictive, it does not apply for dangling dbg value nodes (nodes where dbg.value intrinsic preceds use of the value). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124202 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-25 18:09:33 +00:00
Duncan Sands
227fba11ca In which I discover that zero+zero is zero, d'oh! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124188 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-25 15:14:15 +00:00
Duncan Sands
2539b73128 See if this fixes llvm-gcc bootstrap. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124184 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-25 12:15:09 +00:00
Duncan Sands
d70d1a5c44 According to my auto-simplifier the most common missed simplifications in 
optimized code are:
  (non-negative number)+(power-of-two) != 0 -> true
and
  (x | 1) != 0 -> true
Instcombine knows about the second one of course, but only does it if X|1
has only one use.  These fire thousands of times in the testsuite.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124183 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-25 09:38:29 +00:00
Nick Lewycky
b38824f866 Teach mergefunc how to emit aliases safely again -- but keep it turned it off 
for now. It's controlled by the HasGlobalAliases variable which is not attached
to any flag yet.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124182 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-25 08:56:50 +00:00
Eric Christopher
1bcb4288e5 Reorganize this so that the early exit and special cases come early 
rather than interspersed. No functional change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124168 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-25 01:34:31 +00:00
Evan Cheng
7cfa656ad8 Don't merge restore with tail call instruction. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124167 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-25 01:28:33 +00:00
Anton Korobeynikov
5899a60d2f Provide correct registers for EH stuff on ARM 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124151 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-24 22:38:45 +00:00
Anton Korobeynikov
d4e0978752 Support printing exception section into the current one. This is the case when LSDASection is blank 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124150 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-24 22:38:40 +00:00
Devang Patel
a3ee3ef71b Speculatively revert r124138. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124142 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-24 20:04:37 +00:00
Devang Patel
224a180d11 Resolve DanglingDbgValue of PHI nodes where the use follows dbg.value intrinisic. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124138 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-24 19:24:37 +00:00
Andrew Trick
c48d50f9c0 Temporarily workaround JM/lencod miscompile (SIGSEGV). 
rdar://problem/8893967


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124137 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-24 19:08:15 +00:00
Dan Gohman
bd1801b555 Give GetUnderlyingObject a TargetData, to keep it in sync 
with BasicAA's DecomposeGEPExpression, which recently began
using a TargetData. This fixes PR8968, though the testcase
is awkward to reduce.

Also, update several off GetUnderlyingObject's users
which happen to have a TargetData handy to pass it in.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124134 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-24 18:53:32 +00:00
Chris Lattner
0e3fae27a1 fix PR8928 by clearing a stale map, patch by Jakub Staszak! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124132 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-24 18:36:51 +00:00
Rafael Espindola
184640e96e Handle strings in section names the same way as gas: 
* If the name is a single string, we remove the quotes
* If the name starts without a quote, we include any quotes in the name

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124127 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-24 18:02:54 +00:00
Dan Gohman
a3bbf2411f Add a comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124126 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-24 17:54:18 +00:00
Daniel Dunbar
c98d82a7f0 Support/CommandLine: Fix LookupNearestOption to also search extra option names. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124124 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-24 17:27:17 +00:00
Chris Lattner
ccea167db5 fix a missing shuffle pattern, PR9009. Patch by Artiom Myaskouvskey! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124102 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-24 03:42:46 +00:00
Chris Lattner
867be59684 fix PR9017, a bug where we'd assert when promoting in unreachable 
code.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124100 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-24 03:29:07 +00:00
Chris Lattner
51e62f0f73 fix PR9015, a crash linking recursive metadata. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124099 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-24 03:18:24 +00:00
Chris Lattner
96c0771c01 this isn't a memset, we do convert dest[i] to one though :) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124097 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-24 02:32:00 +00:00
Chris Lattner
7ea7d32de6 with recent work, we now optimize this into: 
define i32 @foo(i32 %x) nounwind readnone ssp {
entry:
  %tobool = icmp eq i32 %x, 0
  %tmp5 = select i1 %tobool, i32 2, i32 1
  ret i32 %tmp5
}



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124091 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-24 01:12:18 +00:00
Chris Lattner
e3357863aa enhance SRoA to promote allocas that are used by PHI nodes. This often 
occurs because instcombine sinks loads and inserts phis.  This kicks in 
on such apps as 175.vpr, eon, 403.gcc, xalancbmk and a bunch of times in
spec2006 in some app that uses std::deque.

This resolves the last of rdar://7339113.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124090 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-24 01:07:11 +00:00
Chris Lattner
c87c50a39c Enhance SRoA to promote allocas that are used by selects in some 
common cases.  This triggers a surprising number of times in SPEC2K6
because min/max idioms end up doing this.  For example, code from the
STL ends up looking like this to SRoA:

  %202 = load i64* %__old_size, align 8, !tbaa !3
  %203 = load i64* %__old_size, align 8, !tbaa !3
  %204 = load i64* %__n, align 8, !tbaa !3
  %205 = icmp ult i64 %203, %204
  %storemerge.i = select i1 %205, i64* %__n, i64* %__old_size
  %206 = load i64* %storemerge.i, align 8, !tbaa !3

We can now promote both the __n and the __old_size allocas.

This addresses another chunk of rdar://7339113, poor codegen on
stringswitch.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124088 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-23 22:04:55 +00:00
Chris Lattner
3928af6ac4 teach Value::isDereferenceablePointer that byval arguments are always 
dereferencable, noticed by inspection.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124085 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-23 21:15:29 +00:00
Anders Carlsson
f330b3227a Add a memset loop that LoopIdiomRecognize doesn't recognize. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124082 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-23 20:31:00 +00:00
Nick Lewycky
76167af9b1 Simplify some code with no functionality change. Make the test a lot more 
robust against smarter optimizations, using the power of FileCheck.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124081 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-23 20:06:05 +00:00
Rafael Espindola
dd0dfdf8be Initialize MCNoExecStack. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124079 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-23 18:50:12 +00:00
Rafael Espindola
96aa78c8c5 Add support for the --noexecstack option. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124077 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-23 17:55:27 +00:00
Ted Kremenek
584520e8e2 Null initialize a few variables flagged by 
clang's -Wuninitialized-experimental warning.
While these don't look like real bugs, clang's
-Wuninitialized-experimental analysis is stricter
than GCC's, and these fixes have the benefit
of being general nice cleanups.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124073 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-23 17:05:06 +00:00
Rafael Espindola
54104db434 Add support for lowercase variants. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124071 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-23 16:11:25 +00:00
Chris Lattner
145c532e68 Enhance SRoA to be more aggressive about scalarization of aggregate allocas 
that have PHI or select uses of their element pointers.  This can often happen
when instcombine sinks two loads into a successor, inserting a phi or select.

With this patch, we can scalarize the alloca, but the pinned elements are not
yet promoted.  This is still a win for large aggregates where only one element
is used.  This fixes rdar://8904039 and part of rdar://7339113 (poor codegen
on stringswitch).



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124070 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-23 08:27:54 +00:00