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Author SHA1 Message Date
Nick Lewycky
5413880654 Fix comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124544 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-29 19:55:23 +00:00
Frits van Bommel
31726c154d Call SimplifyFDivInst() in InstCombiner::visitFDiv(). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124535 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-29 17:50:27 +00:00
Frits van Bommel
1fca2c32cc Move InstCombine's knowledge of fdiv to SimplifyInstruction(). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124534 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-29 15:26:31 +00:00
Duncan Sands
9136782d27 Fix typo: should have been testing that X was odd, not V. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124533 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-29 13:27:00 +00:00
Benjamin Kramer
2c94b4201b Add the missing sub identity "A-(A-B) -> B" to DAGCombine. 
This happens e.g. for code like "X - X%10" where we lower the modulo operation
to a series of multiplies and shifts that are then subtracted from X, leading to
this missed optimization.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124532 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-29 12:34:05 +00:00
Evan Cheng
60f5ad46c2 Add a test for TCE return duplication. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124527 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-29 04:53:35 +00:00
Evan Cheng
c3f507f98a Re-apply r124518 with fix. Watch out for invalidated iterator. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124526 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-29 04:46:23 +00:00
Evan Cheng
b0a42fdb36 Revert r124518. It broke Linux self-host. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124522 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-29 02:43:04 +00:00
Evan Cheng
5e6940788f Re-commit r124462 with fixes. Tail recursion elim will now dup ret into unconditional predecessor to enable TCE on demand. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124518 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-29 01:29:26 +00:00
Andrew Trick
04317cc618 Implementation of path profiling. 
Modified patch by Adam Preuss.

This builds on the existing framework for block tracing, edge profiling and optimal edge profiling.
See -help-hidden for new flags.
For documentation, see the technical report "Implementation of Path Profiling..." in llvm.org/pubs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124515 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-29 01:09:53 +00:00
Nick Lewycky
db9cd76635 Most browsers eliminate whitespace between anchor tags. Force whitespace with 
  so that the code reads properly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124514 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-29 01:09:53 +00:00
Roman Divacky
cb72780176 Error on .code16 instead of producing wrong (32bit) code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124498 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-28 19:29:48 +00:00
Duncan Sands
79f4eea7a3 This dyn_cast should be a cast. Pointed out by Frits van Bommel. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124497 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-28 18:53:08 +00:00
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
26859587fd Clean up the tests a little, make sure we match an instruction in the right 
test.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124473 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-28 05:13:17 +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
Rafael Espindola
ddf0e59cc6 Add a triple. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124471 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-28 03:57:55 +00:00
Nick Lewycky
ae479aa13e Add missing include for ptrdiff_t. Patch by Joerg Sonnenberger! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124470 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-28 03:52:25 +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
Bob Wilson
9b8c3530cc Fix a comment typo. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124450 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-27 23:08:52 +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
Douglas Gregor
75f6e89ea9 Clang: separate the access-control diagnostics from other diagnostics that do not have SFINAE behavior. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124440 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-27 21:06:17 +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
Oscar Fuentes
d73e5751b2 Don't show -pedantic, -W and -Wall on the output of 
llvm-config --cflags --cxxflags --cppflags

We shouldn't impose those flags on people who use llvm-config for
building their own projects.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124399 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-27 19:29:48 +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
989e7c4d0f Add DenseSet::resize for API parity with DenseMap::resize. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124370 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-27 09:10:42 +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