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Author SHA1 Message Date
Paul Redmond
6ce33a6ae9 Do not vectorize loops with subtraction reductions 
Since subtraction does not commute the loop vectorizer incorrectly vectorizes
reductions such as x = A[i] - x.

Disabling for now.

llvm-svn: 171537
 2013-01-04 22:10:16 +00:00
Eric Christopher
3f90fbe286 Add a name for the anonymous type we're creating for subrange 
types and a FIXME for what we should be doing. Should solve the
immediacy of PR12069 where our debug info is crashing another
tool.

llvm-svn: 171536
 2013-01-04 21:51:53 +00:00
Michael Gottesman
c63800aa94 Added DEBUG message to ObjCARC when we optimize objc_retain => objc_retainAutorelasedReturnValue. 
llvm-svn: 171535
 2013-01-04 21:30:38 +00:00
Michael Gottesman
0f781a1a5c Fixed up some DEBUG messages where I was putting in the text of a message the method where it was being called when I should have just prefixed the actual message with Pass::Method. 
Additionally I fixed some whitespace issues.

llvm-svn: 171534
 2013-01-04 21:29:57 +00:00
Nadav Rotem
3349017273 Fix a warning 
llvm-svn: 171525
 2013-01-04 21:08:44 +00:00
Preston Gurd
b1c34fa73f The current Intel Atom microarchitecture has a feature whereby when a function 
returns early then it is slightly faster to execute a sequence of NOP
instructions to wait until the return address is ready,
as opposed to simply stalling on the ret instruction
until the return address is ready.

When compiling for X86 Atom only, this patch will run a pass, called
"X86PadShortFunction" which will add NOP instructions where less than four
cycles elapse between function entry and return.

It includes tests.

Patch by Andy Zhang.

llvm-svn: 171524
 2013-01-04 20:54:54 +00:00
Bill Wendling
fee1eee2b0 General cleanups. 
* Remove dead methods.
* Use the 'operator==' method instead of 'contains', which isn't needed.
* Fix some comments.

No functionality change.

llvm-svn: 171523
 2013-01-04 20:54:35 +00:00
Michael J. Spencer
641cf62d29 [Object][ELF] Add a maximum alignment. This is used by createELFObjectFile to create a properly aligned reader. 
llvm-svn: 171520
 2013-01-04 20:36:28 +00:00
Akira Hatanaka
b02400099c [mips] MipsTargetLowering::getSetCCResultType should return a vector type if 
vectors are being compared.

llvm-svn: 171517
 2013-01-04 20:06:01 +00:00
Akira Hatanaka
7477b1b91f [mips] 80 columns. 
llvm-svn: 171515
 2013-01-04 19:38:05 +00:00
Nick Kledzik
8ae5e45184 Fix how YAML I/O detects flow sequences. 
Update test case to verify flow sequence is
written as a flow sequence.

llvm-svn: 171514
 2013-01-04 19:32:00 +00:00
Akira Hatanaka
e07ce3ab22 [mips] Reorder template parameters. Remove class shift_rotate_imm32 and 
shift_rotate_imm64.

llvm-svn: 171513
 2013-01-04 19:25:46 +00:00
Manman Ren
6e5ea3bafd Memory Dependence Analysis: fix a miscompile that uses DT to approxmiate the 
reachablity.

We conservatively approximate the reachability analysis by saying it is not
reachable if there is a single path starting from "From" and the path does not
reach "To".

rdar://12801584

llvm-svn: 171512
 2013-01-04 19:19:47 +00:00
Akira Hatanaka
014ed59039 [mips] Refactor conditional move instructions. 
llvm-svn: 171511
 2013-01-04 19:16:38 +00:00
Akira Hatanaka
d01b04ad93 [mips] Refactor instructions which move data from or to coprocessors. 
llvm-svn: 171510
 2013-01-04 19:13:49 +00:00
Nadav Rotem
0dd9fa92a0 Update the gcc-loops benchmarks results with the new automatic unrolling feature. 
llvm-svn: 171509
 2013-01-04 19:10:34 +00:00
Eli Bendersky
bc7da64571 fix a couple of typos 
llvm-svn: 171508
 2013-01-04 19:09:15 +00:00
Eli Bendersky
f90ae6a2f1 Remove unused #include 
llvm-svn: 171507
 2013-01-04 19:08:43 +00:00
Adhemerval Zanella
fb3cdfff15 PowerPC: Fix eh_frame relocation for PIC 
This patch fixes the PPC eh_frame definitions for the personality and 
frame unwinding for PIC objects. It makes PIC build correctly creates
relative relocations in the '.rela.eh_frame' segments and thus avoiding
a text relocation that generates a DT_TEXTREL segments in link phase.

llvm-svn: 171506
 2013-01-04 19:08:13 +00:00
Nadav Rotem
d5d3609029 Add linpack-pc bench 
llvm-svn: 171499
 2013-01-04 19:00:42 +00:00
Joel Jones
9df037b59d Add Textmate bundle for Tablegen syntax-highlighting 
llvm-svn: 171496
 2013-01-04 18:55:24 +00:00
Nadav Rotem
7f7c4d9608 Change the default number of registers to prevent unrolling on targets that dont have this hook. 
llvm-svn: 171489
 2013-01-04 18:40:39 +00:00
Eric Christopher
d593f65fae Add a space to the end of the line so we don't get "itsbounds" in output. 
llvm-svn: 171487
 2013-01-04 18:30:36 +00:00
Pedro Artigas
b5becdf476 small fixes to enable the reuse of the pass manager across multiple modules 
llvm-svn: 171475
 2013-01-04 18:04:42 +00:00
Eric Christopher
80c6027067 Add section information for the DWARF5 split debug proposal 
string offset section.

llvm-svn: 171474
 2013-01-04 17:59:22 +00:00
Eric Christopher
085e845222 Make comment a bit more clear. 
llvm-svn: 171473
 2013-01-04 17:59:17 +00:00
Nadav Rotem
9e40cca003 Move the loop vectorizer from O2 to O3. It looks like the increase in code size actually hurts the performance on many programs. 
llvm-svn: 171471
 2013-01-04 17:57:44 +00:00
Nadav Rotem
483cacd34a Update the docs about the new unroll features. 
llvm-svn: 171470
 2013-01-04 17:49:45 +00:00
Nadav Rotem
cb3562a88e LoopVectorizer: 
1. Add code to estimate register pressure.
2. Add code to select the unroll factor based on register pressure.
3. Add bits to TargetTransformInfo to provide the number of registers.

llvm-svn: 171469
 2013-01-04 17:48:25 +00:00
Nadav Rotem
08d6ff1eaf Revert revision: 171467. This transformation is incorrect and makes some tests fail. Original message: 
Simplified TRUNCATE operation that comes after SETCC. It is possible since SETCC result is 0 or -1.
Added a test.

llvm-svn: 171468
 2013-01-04 17:35:21 +00:00
Elena Demikhovsky
d675e085b0 Simplified TRUNCATE operation that comes after SETCC. It is possible since SETCC result is 0 or -1. 
Added a test.

llvm-svn: 171467
 2013-01-03 08:48:33 +00:00
Michael Gottesman
5f81e1c2d0 Revert "Mark DIV/IDIV instructions hasSideEffects=1 because they can trap when dividing by 0. This is needed to keep early if conversion from moving them across basic blocks." 
This reverts commit r171461 since it breaks the following tests:

Clang :: Analysis/outofbound-notwork.c
Clang :: Analysis/string-fail.c
Clang :: CXX/basic/basic.lookup/basic.lookup.qual/p6-0x.cpp
Clang :: CXX/basic/basic.lookup/basic.lookup.unqual/p15.cpp
Clang :: CXX/dcl.dcl/dcl.spec/dcl.fct.spec/p4.cpp
Clang :: CXX/dcl.dcl/dcl.spec/dcl.stc/p10.cpp
Clang :: CXX/temp/temp.param/p14.cpp
Clang :: CXX/temp/temp.res/temp.dep.res/temp.point/p1.cpp
Clang :: CodeGen/2009-02-13-zerosize-union-field-ppc.c
Clang :: CodeGen/blocks-2.c
Clang :: CodeGen/libcalls-d.c
Clang :: CodeGen/libcalls-ld.c
Clang :: CodeGenCXX/conversion-function.cpp
Clang :: CodeGenCXX/debug-info-limit-type.cpp
Clang :: CodeGenCXX/inheriting-constructor.cpp
Clang :: FixIt/fixit-errors.c
Clang :: FixIt/fixit-pmem.cpp
Clang :: Modules/namespaces.cpp
Clang :: PCH/changed-files.c
Clang :: PCH/pr4489.c
Clang :: PCH/source-manager-stack.c
Clang :: Parser/cxx-ambig-decl-expr-xfail.cpp
Clang :: SemaCXX/switch-implicit-fallthrough-cxx98.cpp
Clang :: SemaTemplate/instantiate-function-1.mm

llvm-svn: 171466
 2013-01-03 08:18:30 +00:00
Michael Gottesman
a67b835abe Changed two debug statements that state that a queue had finished being processed when said queue was really a list to state a list had finished being processed. 
llvm-svn: 171465
 2013-01-03 08:09:27 +00:00
Michael Gottesman
27dfca0765 Added DEBUG message for ObjCARC when we zap a push/pop pair in ObjCARCAPElim::OptimizeBB. 
llvm-svn: 171464
 2013-01-03 08:09:17 +00:00
Michael Gottesman
5c76a62ee6 Added DEBUG message to ObjCARC when we transform objc_initWeak(p, null) => *p = null. 
llvm-svn: 171463
 2013-01-03 07:32:53 +00:00
Michael Gottesman
fcffa87a15 Added DEBUG message for ObjCARC when an inline asm marker is inserted for architectures where this is required to perform a retainAutoreleasedReturnValue optimization. 
llvm-svn: 171462
 2013-01-03 07:32:41 +00:00
Craig Topper
e040f2bdfd Mark DIV/IDIV instructions hasSideEffects=1 because they can trap when dividing by 0. This is needed to keep early if conversion from moving them across basic blocks. 
llvm-svn: 171461
 2013-01-03 06:40:20 +00:00
Hal Finkel
ff21253111 Better comment on VTTI::getShuffleCost 
llvm-svn: 171459
 2013-01-03 05:02:41 +00:00
NAKAMURA Takumi
eaed684039 Compiler.h: Leave LLVM_BUILTIN_UNREACHABLE undefined if it is unavailable in host compiler. 
Users of LLVM_BUILTIN_UNREACHABLE should be responsible in the case when LLVM_BUILTIN_UNREACHABLE is undefined.

Actually, (0, (p)) in LLVM_ASSUME_ALIGNED(p, a) caused thousands of warnings on g++-4.4. It was a motivation in this commit.

llvm-svn: 171455
 2013-01-03 03:30:22 +00:00
Hal Finkel
121335da15 Add a subtype parameter to VTTI::getShuffleCost 
In order to cost subvector insertion and extraction, we need to know
the type of the subvector being extracted.

No functionality change.

llvm-svn: 171453
 2013-01-03 02:34:09 +00:00
Bill Wendling
bc7a24c036 Revert everything to r171366 to try to fix the build. 
llvm-svn: 171450
 2013-01-03 02:01:50 +00:00
Nadav Rotem
324a3ca6c4 Reformat the rst text. 
llvm-svn: 171449
 2013-01-03 01:56:33 +00:00
Bill Wendling
e0967fda18 Try again to revert the bad patch. The tree was reverted for some unknown reason 
before the last time.

--- Reverse-merging r171442 into '.':
U    include/llvm/IR/Attributes.h
U    lib/IR/Attributes.cpp
U    lib/IR/AttributeImpl.h

llvm-svn: 171448
 2013-01-03 01:54:39 +00:00
Hal Finkel
0d20c75b66 Add a default Index for VTTI::getShuffleCost 
When Kind == (Broadcast or Reverse) then Index is not used; make it an optional parameter.

No functionality change.

llvm-svn: 171447
 2013-01-03 01:50:51 +00:00
Nadav Rotem
ea6706d777 LoopVectorizer: Test the unrolling flag. 
llvm-svn: 171446
 2013-01-03 01:47:31 +00:00
Nadav Rotem
cbe45babb2 LoopVectorizer: Document the unrolling feature. 
llvm-svn: 171445
 2013-01-03 01:47:02 +00:00
Bill Wendling
bc6183b1fb Revert patch. Something snuck in there that shouldn't be. 
--- Reverse-merging r171441 into '.':
U    include/llvm/IR/Attributes.h
U    lib/IR/Attributes.cpp

llvm-svn: 171444
 2013-01-03 01:46:27 +00:00
Bill Wendling
aa9022eef7 Remove the 'contains' methods in favor of the 'operator==' method. 
The 'operator==' method is a bit clearer and much less verbose for somethings
that should have only one value. Remove from the AttrBuilder for consistency.

llvm-svn: 171442
 2013-01-03 01:43:05 +00:00
NAKAMURA Takumi
ecc0c04042 Revert r171427, "An intermediate step in the Attributes rewrite." 
llvm-svn: 171441
 2013-01-03 01:42:06 +00:00
Michael J. Spencer
8246b2fd6b [Object] Temporarily disable these tests. 
They are failing because archives create unaligned ELF files. The recent
Endian change added a __builtin_unreachable() when this happens. I will be
committing a fix for this soon.

llvm-svn: 171438
 2013-01-03 01:24:32 +00:00