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23360 Commits

Author SHA1 Message Date
Evan Cheng
b2031145e3 Really silence compiler warnings. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51123 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-14 20:26:35 +00:00
Dale Johannesen
40e829fadb CommonLinkage (missed a file) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51120 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-14 20:14:09 +00:00
Dale Johannesen
c7071cc57b Generated files for CommonLinkage. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51119 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-14 20:13:36 +00:00
Dale Johannesen
aafce77b17 Add CommonLinkage; currently tentative definitions 
are represented as "weak", but there are subtle differences
in some cases on Darwin, so we need both.  The intent
is that "common" will behave identically to "weak" unless
somebody changes their target to do something else.
No functional change as yet.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51118 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-14 20:12:51 +00:00
Evan Cheng
5087124721 Silence some compiler warnings. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51115 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-14 20:07:51 +00:00
Devang Patel
ef3682a4fb Simplify internalize pass. Add test case. 
Patch by Matthijs Kooijman!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51114 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-14 20:01:01 +00:00
Dan Gohman
d64a78c9ed When bit-twiddling CondCode values for integer comparisons produces 
SETOEQ, is it does with (SETEQ & SETULE), map it to SETEQ.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51112 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-14 18:17:09 +00:00
Sanjiv Gupta
2010b3eea6 Detabification. Fixed indentation and spacing. 
Changed cout to DOUT, and TODOs to FIXMEs.
Other changes as per coding conventions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51105 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-14 11:31:39 +00:00
Nicolas Geoffray
9474ede38b Fix typo in ParameterAttribute fields usage. Add an include 
to make the Cpp backend output compilable.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51095 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-14 07:52:03 +00:00
Sanjiv Gupta
2d4e7f732a Fixed the file description header at the top to remove the developer name. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51094 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-14 06:50:01 +00:00
Evan Cheng
6bf877035e Doh. Alignment is in bytes, not in bits. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51092 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-14 02:49:43 +00:00
Dan Gohman
c9f5f3f64f Change target-specific classes to use more precise static types. 
This eliminates the need for several awkward casts, including
the last dynamic_cast under lib/Target.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51091 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-14 01:58:56 +00:00
Dan Gohman
9c78a39907 Whitespace cleanups. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51089 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-14 00:43:10 +00:00
Dan Gohman
4d9dd6beae Make PreVerifyID, IntSigsEnd, and KillSigsEnd const. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51088 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-14 00:42:30 +00:00
Dan Gohman
45b3197090 Split the loop unroll mechanism logic out into a utility function. 
Patch by Matthijs Kooijman!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51083 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-14 00:24:14 +00:00
Owen Anderson
c4f406e736 Fix Analysis/BasicAA/pure-const-dce.ll. This turned out to be a correctness 
bug as well as a missed optimization.  We weren't properly checking for local
dependencies before moving on to non-local ones when doing non-local read-only 
call CSE.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51082 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-13 23:18:30 +00:00
Gabor Greif
94fb68ba21 Merge of r51073-51074 from use-diet branch. 
Do not rely on std::swap<Use>, provide a (faster) member function instead.
This change is primarily necessitated by MSVC++'s incompatibility with
declaring std::swap<Use> to be a friend of Use.

Also contains some minor tweaks to Use inline functions,
to undo pointless changes that sneaked in with the last merge.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51078 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-13 22:51:52 +00:00
Devang Patel
2527e88416 Dominance Frontier is cfg only pass. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51075 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-13 22:43:21 +00:00
Owen Anderson
ff5a535378 Fix memdep's handling of invokes when finding the dependency of another call 
instruction.  This fixes some Ada miscompiles reported in PR2324.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51069 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-13 21:25:37 +00:00
Dale Johannesen
72997fedab Fix for PR 2323, infinite loop in tail dup. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51063 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-13 20:06:43 +00:00
Chris Lattner
3b34e1e9e8 add a note 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51062 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-13 19:56:20 +00:00
Evan Cheng
b656443366 - Fix the pasto in the fix for a previous pasto. 
- Incorporate Chris' comment suggestion.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51061 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-13 18:59:59 +00:00
Chris Lattner
7171c836a9 add a note 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51060 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-13 18:48:54 +00:00
Nate Begeman
32097bdbf6 Fix one more encoding bug. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51057 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-13 17:52:09 +00:00
Evan Cheng
11b6793ede - Don't treat anyext 16-bit load as a 32-bit load if it's volatile. 
- Correct a pasto.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51054 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-13 16:45:56 +00:00
Owen Anderson
16db1f70b7 Make the non-local CSE safety checks slightly more thorough. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51035 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-13 13:41:23 +00:00
Sanjiv Gupta
0e68771536 Adding files for Microchip's PIC16 target. 
A brief description about PIC16:
===============================
PIC16 is an 8-bit microcontroller with only one 8-bit register which is the 
accumulator. All arithmetic/load/store operations are 8-bit only.
The architecture has two address spaces: program and data. The program memory 
is divided into 2K pages and the data memory is divided into banks of 128 byte, with only 80 usable bytes, resulting in an non-contiguous data memory. 

It supports direct data memory access (by specifying the address as part of the instruction) and indirect data and program memory access (in an unorthodox fashion which utilize a 16 bit pointer register). 

Two classes of registers exist: (8-bit class which is only one
accumulator) (16-bit class, which contains one or more 16 bit
pointer(s))



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51027 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-13 09:02:57 +00:00
Evan Cheng
77f0b7a50a Instead of a vector load, shuffle and then extract an element. Load the element from address with an offset. 
pshufd $1, (%rdi), %xmm0
        movd %xmm0, %eax
=>
        movl 4(%rdi), %eax


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51026 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-13 08:35:03 +00:00
Owen Anderson
3b3f58cb77 Add support for non-local CSE of read-only calls. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51024 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-13 08:17:22 +00:00
Gabor Greif
d6a2218586 Derive GetResultInst from UnaryInstruction, this simplifies code and removes a FIXME. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51023 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-13 07:09:08 +00:00
Dan Gohman
6ddba2b933 Change class' public PassInfo variables to by initialized with the 
address of the PassInfo directly instead of calling getPassInfo.
This eliminates a bunch of dynamic initializations of static data.

Also, fold RegisterPassBase into PassInfo, make a bunch of its
data members const, and rearrange some code to initialize data
members in constructors instead of using setter member functions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51022 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-13 02:05:11 +00:00
Nate Begeman
a72acf9389 80 col / tabs fixes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51021 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-13 01:48:26 +00:00
Nate Begeman
c9bdb00683 Fix and encoding error in the psrad xmm, imm8 instruction. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51020 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-13 01:47:52 +00:00
Evan Cheng
fa7fd33a26 On x86, it's safe to treat i32 load anyext as a normal i32 load. Ditto for i8 anyext load to i16. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51019 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-13 00:54:02 +00:00
Dan Gohman
844731a7f1 Clean up the use of static and anonymous namespaces. This turned up 
several things that were neither in an anonymous namespace nor static
but not intended to be global.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51017 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-13 00:00:25 +00:00
Nate Begeman
0d1704b955 Teach Legalize how to scalarize VSETCC 
Teach X86 a few more vsetcc patterns.  Custom lowering for unsupported ones is next.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51009 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 23:09:43 +00:00
Evan Cheng
9bfa03c6fd Xform bitconvert(build_pair(load a, load b)) to a single load if the load locations are at the right offset from each other. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51008 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 23:04:07 +00:00
Dale Johannesen
30562b7d44 Be more aggressive about tail-merging small blocks 
if those blocks consist entirely of common instructions;
merging will not add an extra branch in this case.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51006 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 22:53:12 +00:00
Bill Wendling
ae94dda61a Constify isSourceDefinedByImplicitDef function. Otherwise, just formatting 
changes that don't change functionality.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51004 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 22:15:05 +00:00
Bill Wendling
9f8fea3531 Constify the machine instruction passed into the 
"is{Trivially,Really}ReMaterializable" methods.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51001 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 20:54:26 +00:00
Nate Begeman
c2616e43fd Initial X86 codegen support for VSETCC. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51000 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 20:34:32 +00:00
Dale Johannesen
51b2b9e29e Further rework of tail merge algorithm. Not quite 
semantically identical, but little difference in
either results or execution speed; but it's much
easier to read, at least IMO.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50999 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 20:33:57 +00:00
Nate Begeman
baa64ebd26 Simplify some checks 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50998 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 20:33:52 +00:00
Dan Gohman
9499b7186b Fix a copy+paste bug; pseudo-instructions shouldn't have 
encoding information.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50997 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 20:22:45 +00:00
Nate Begeman
51d2ed179b Pointer comparisons should use icmp, not vicmp 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50996 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 20:16:55 +00:00
Owen Anderson
a472c4a280 Go back to passing the analyses around as parameters. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50995 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 20:15:55 +00:00
Nate Begeman
c83ad0d8e7 Pointer comparisons should be handled by icmp, not vicmp :) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50994 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 20:11:05 +00:00
Nate Begeman
18e4e8500f Hard code CmpInst back to i1 for now while I go track down what in the bitcode reader/writer is assuming i1 
This was breaking a bunch of tests


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50992 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 20:01:56 +00:00
Evan Cheng
ad4196b44a Refactor isConsecutiveLoad from X86 to TargetLowering so DAG combiner can make use of it. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50991 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 19:56:52 +00:00
Bill Wendling
c1b7f52fbe Revert the previous commit. Go ahead and hoist rematerializable instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50990 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 19:47:18 +00:00
Nate Begeman
b43e9c1965 Add support for vicmp/vfcmp codegen, more legalize support coming. 
This is necessary to unbreak the build.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50988 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 19:40:03 +00:00
Bill Wendling
e4fc1ccd4d One real change - don't hoist something that's trivially rematerializable. It's 
possible for it to produce worse code than before.

The rest of this patch is code cleanup.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50987 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 19:38:32 +00:00
Nate Begeman
6fd90ce2ee Fix build breakage 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50986 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 19:23:22 +00:00
Nate Begeman
ac80ade158 Add two new instructions to the llvm IR, vicmp and vfcmp. see updated LangRef 
for details.  CodeGen support coming in a follow up patch


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50985 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 19:01:56 +00:00
Dan Gohman
7c2e4f2fc5 Make firstEightPowers const. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50975 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 16:38:14 +00:00
Dan Gohman
9b38d7db6d Update comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50974 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 16:34:30 +00:00
Dan Gohman
2ce3898e41 Fix a compile error on compilers that still want a return value 
in a non-void function that calls abort.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50969 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 16:17:19 +00:00
Dan Gohman
9ab9ee8209 Fix a missing break in the ISD::FLT_ROUNDS_ handling. Patch by giuma! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50967 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 16:07:15 +00:00
Owen Anderson
7b45e33107 Move the various analyses used by GVN into static variables so we don't have to keep passing them around or refetching them. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50963 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 08:15:27 +00:00
Chris Lattner
4651f3de34 prune #includes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50962 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 01:13:53 +00:00
Chris Lattner
ab7d9ccf18 Add a new SparsePropagation analysis utility, which allows you to do 
SCCP like sparse lattice analysis with relative ease.  Just pick your
lattice function and implement the transfer function and you're good.
Just make sure you don't break monotonicity ;-)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50961 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 01:12:24 +00:00
Nick Lewycky
fff116fd58 Make constructors target-specific. This fixes problems where the path would 
include backslashes on Windows. This should fix llvm-ld problems on win32.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50960 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-11 17:37:40 +00:00
Anton Korobeynikov
64d69102a1 Add note 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50959 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-11 14:33:15 +00:00
Chris Lattner
5c8e8d7fc5 Fix various DOUTs to not call the extremely expensive Value::getName() 
method.  DOUT statements are disabled when assertions are off, but the
side effects of getName() are still evaluated.  Just call getNameSTart,
which is close enough and doesn't cause heap traffic.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50958 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-11 01:55:59 +00:00
Chris Lattner
3a73c9e5f9 Simplify code by using SwitchInst::findCaseValue instead of reimplementing it. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50957 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-10 23:56:54 +00:00
Anton Korobeynikov
caa8ae8125 Fix linking of internal aliases 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50950 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-10 14:41:43 +00:00
Gabor Greif
efe65369a7 merge of use-diet branch to trunk 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50943 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-10 08:32:32 +00:00
Evan Cheng
50d9e7289b When transforming a vector_shuffle to a load, the base address must not be an undef. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50940 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-10 06:46:49 +00:00
Dan Gohman
9018e836fe For now, abort when an ISD::VAARG is encountered on x86-64, rather 
than silently generate invalid code.

llvm-gcc does not currently use VAArgInst; it lowers va_arg in the
front-end.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50930 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-10 01:26:14 +00:00
Evan Cheng
b70ea0bd03 Some clean up. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50929 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-10 00:59:18 +00:00
Evan Cheng
25210da757 If movl top bits are undef, let it be selected to movlps, etc. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50928 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-10 00:58:41 +00:00
Evan Cheng
b3e0a6d75c If all sources of a PHI node are defined by an implicit_def, just emit an implicit_def instead of a copy. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50927 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-10 00:17:50 +00:00
Bill Wendling
637980edce Cosmetic changes: 
- Comment fixes.
 - Moar whitespace.
 - Made ivars "private" by default.
No functionality change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50926 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-10 00:12:52 +00:00
Evan Cheng
23573e5be6 Add a pattern to do move the low element of a v4f32 and zero extend the rest. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50922 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-09 23:37:55 +00:00
Dale Johannesen
6b8583cbf1 Remove an evil vector bool. Cosmetic refactoring, 
no functional change.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50921 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-09 23:28:24 +00:00
Evan Cheng
d880b97257 Handle a few more cases of folding load i64 into xmm and zero top bits. 
Note, some of the code will be moved into target independent part of DAG combiner in a subsequent patch.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50918 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-09 21:53:03 +00:00
Dale Johannesen
6ae83faadf Rewrite tail merging algorithm to handle the 
case where there are multiple blocks with a large
number of common tail instructions more efficiently
(compile time optimization).



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50916 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-09 21:24:35 +00:00
Torok Edwin
f03893acf0 put LibCallAliasAnalysis into anonymous namespace to avoid 
clashes on ::X


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50912 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-09 20:35:45 +00:00
Chris Lattner
bfc538c09e don't sink invokes, even if they are readonly. This fixes a 
crash on kimwitu++.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50901 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-09 15:07:33 +00:00
Duncan Sands
33af59d0f0 Fix a type and formatting. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50900 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-09 12:20:10 +00:00
Chris Lattner
7d2cbd2d43 Implement PR2298. This transforms: 
~x < ~y --> y < x
   -x == -y --> x == y



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50882 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-09 05:19:28 +00:00
Chris Lattner
94019f8e06 restore doxygen comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50881 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-09 04:43:13 +00:00
Anton Korobeynikov
018f771398 Check for validity of aliasee pointer before dereference. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50878 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-08 23:11:06 +00:00
Evan Cheng
fd17f42bab Use movq to move low half of XMM register and zero-extend the rest. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50874 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-08 22:35:02 +00:00
Chris Lattner
748118d8aa conservatively say that volatile stores read memory. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50872 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-08 21:58:49 +00:00
Chris Lattner
38818b072f store can't read from memory. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50869 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-08 21:47:43 +00:00
Chris Lattner
76e2e4a2bc Remove dead return. Thanks to Bill for the review! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50863 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-08 18:26:56 +00:00
Gordon Henriksen
a8a118b68f Improve pass documentation and comments. 
Patch by Matthijs Kooijman!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50861 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-08 17:46:35 +00:00
Chris Lattner
2539e33893 More than just loads can read from memory: readonly calls like strlen 
also need to be checked for memory modifying instructions before we
can sink them.  THis fixes the second half of PR2297.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50860 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-08 17:37:37 +00:00
Chris Lattner
0ef546e639 Make instcombine's DSE respect loads as well as stores. It is not safe to 
delete the first store in:

store x -> p
load p
store y -> p

This is for PR2297.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50859 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-08 17:20:30 +00:00
Chris Lattner
d96288a2ff add a new Instruction::mayReadFromMemory predicate, make 
Instruction::mayWriteToMemory stronger for invokes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50858 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-08 17:16:51 +00:00
Devang Patel
d7266d484a Check linkage. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50851 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-08 15:08:39 +00:00
Duncan Sands
43b30a8287 Get exception handling working again on 64 bit 
Darwin.  This is a hack of course, but it does
at least look at the right thing: gotpcrel means
that this is already an offset, so an explicit
offset is not needed (and wrong).  I think this
is good enough for the moment: Anton is working
on something better.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50850 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-08 12:33:11 +00:00
Chris Lattner
268e7d7a94 Add support for constant folding the 'offsetof' pattern even if the 
base is not zero.  This fixes test/C++Frontend/2008-05-07-CrazyOffsetOf.cpp


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50840 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-08 04:54:43 +00:00
Evan Cheng
7e2ff77ef0 Handle vector move / load which zero the destination register top bits (i.e. movd, movq, movss (addr), movsd (addr)) with X86 specific dag combine. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50838 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-08 00:57:18 +00:00
Anton Korobeynikov
0b12ecf6ff Turn StripPointerCast() into a method 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50836 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-07 22:54:15 +00:00
Chris Lattner
029840c935 Add a new LibCallAliasAnalysis pass, which is parameterized 
by an instance of LibCallInfo to provide mod/ref info of
standard library functions.  This is powerful enough to
say that 'sqrt' is readonly except that it modifies errno,
or that "printf doesn't store to memory unless the %n
constraint is present" etc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50827 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-07 19:53:05 +00:00
Duncan Sands
671fa97a4b Output correct exception handling and frame info 
on x86-64 linux.  This causes no regressions on
32 bit linux and 32 bit ppc.  More tests pass
on 64 bit ppc with no regressions.  I didn't
turn on eh on 64 bit linux because the intrinsics
needed to compile the eh runtime aren't done
yet.  But if you turn it on and link with the
mainline runtime then eh seems to work fine
on x86-64 linux with this patch.  Thanks to
Dale for testing.  The main point of the patch
is that if you output that some object is
encoded using 4 bytes you had better not output
8 bytes for it: the patch makes everything
consistent.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50825 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-07 19:11:09 +00:00
Chris Lattner
14852f27e7 Add a new interface for describing the behavior of library calls. This 
Currently is sufficient to describe mod/ref behavior but will hopefully
eventually be extended for other purposes.

This isn't used by anything yet.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50820 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-07 18:21:13 +00:00
Evan Cheng
7ebc06bfd8 Yet another nasty spiller bug. 
%ecx = op
store %cl<kill>, (addr)
(addr) = op %al

It's not safe to unfold the last operand and eliminate store even though %cl is marked kill. It's a sub-register use which means one of its super-register(s) may be used below.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50794 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-07 00:49:28 +00:00
Dan Gohman
42ac929ed9 Fix a bug in the ComputeMaskedBits logic for multiply. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50793 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-07 00:35:55 +00:00
Anton Korobeynikov
149a315369 If weak GlobalVariable was bitcast'ed to different type during linking 
we will need to strip all casts for intializer lookup.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50776 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-06 22:52:54 +00:00
Anton Korobeynikov
b04adddd50 Make StripPointerCast a common function (should we mak it method of Value instead?) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50775 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-06 22:52:30 +00:00
Owen Anderson
8b23bb792e We need to update PHIs containing the exiting block, not the exit block. We really should come up with better names for these. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50770 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-06 20:55:16 +00:00
Devang Patel
d1e50edf5a Fix typo. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50713 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-06 05:40:11 +00:00
Nick Lewycky
08de613d2d Fix typo and indentation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50706 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-06 04:03:18 +00:00
Nick Lewycky
5c632e904c Fix renamePathOnDisk on Win32, patch from David Leon. This fixes problems with 
llvm-ar being unable to rename files.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50702 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-06 03:42:21 +00:00
Chris Lattner
9b34849a6b fix typo Duncan noticed 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50699 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-06 02:31:18 +00:00
Chris Lattner
3bf6accfea Match things like 'armv5tejl-unknown-linux-gnu' for PR2290 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50698 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-06 02:29:28 +00:00
Dan Gohman
4a3f6c8882 Make several variable declarations static. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50696 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-06 01:53:16 +00:00
Dan Gohman
84b7df43fb Remove uses of llvm/System/IncludeFile.h that are no longer needed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50695 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-06 01:32:53 +00:00
Dan Gohman
54eed37131 Instead of enumerating each opcode that isn't handled that 
ComputeMaskedBits handles, just use a 'default:'. This avoids
TargetLowering's list getting out of date with SelectionDAG's.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50693 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-06 00:53:29 +00:00
Dan Gohman
23e1df8b8d Correct the value of LowBits in srem and urem handling in 
ComputeMaskedBits.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50692 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-06 00:51:48 +00:00
Dan Gohman
703bfe6909 Fix a broken doxygen comment, and reword it for clarity. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50687 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-06 00:20:10 +00:00
Chris Lattner
88c1baa50c add a micro optzn. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50681 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-05 23:19:45 +00:00
Mon P Wang
ab3e747c64 Improved generated code for atomic operators 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50677 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-05 22:56:23 +00:00
Evan Cheng
71f489d728 Code clean up. No functionality change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50675 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-05 22:12:23 +00:00
Bill Wendling
ac17822206 Fix: Some classes were derived from a class in an anonymous namespace, but they 
themselves weren't in the anonymous namespace.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50673 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-05 21:37:59 +00:00
Chris Lattner
8554cc2ea7 Fix a crash when threading a block that includes a MRV call result. 
DemoteRegToStack doesn't work with MRVs yet, because it relies on the
ability to load/store things.

This fixes PR2285.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50667 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-05 20:21:22 +00:00
Mon P Wang
63307c335a Added addition atomic instrinsics and, or, xor, min, and max. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50663 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-05 19:05:59 +00:00
Dan Gohman
94bbdc8c25 Fix IsLinux being uninitialized on non-Linux targets. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50660 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-05 18:43:07 +00:00
Evan Cheng
34cd4a484e Fix more -Wshorten-64-to-32 warnings. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50659 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-05 18:30:58 +00:00
Anton Korobeynikov
aa57a7f7a1 Fix 80col violation 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50654 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-05 17:08:59 +00:00
Dan Gohman
87c3d4173e Fix a bug in the ELF writer that caused it to produce malformed 
ELF headers. The ELF writer still isn't generally usable though.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50652 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-05 16:48:32 +00:00
Dan Gohman
600bf16cf7 Use a dedicated IsLinux flag instead of an ELFLinux TargetType. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50649 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-05 16:11:31 +00:00
Dan Gohman
a779a9899a Add AsmPrinter support for emitting a directive to declare that 
the code being generated does not require an executable stack.

Also, add target-specific code to make use of this on Linux
on x86. 


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50634 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-05 00:28:39 +00:00
Anton Korobeynikov
6625eff8ec Add General Dynamic TLS model for X86-64. Some parts looks really ugly (look for tlsaddr pattern), 
but should work. Work is in progress, more models will follow


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50630 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-04 21:36:32 +00:00
Chris Lattner
cc81d15605 regenerate 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50621 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-04 17:18:47 +00:00
Gordon Henriksen
16c1f44d91 Use (void) instead of () in C code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50620 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-04 12:55:34 +00:00
Evan Cheng
5759f97f50 Select vector shift with non-immediate i32 shift amount operand by first moving the operand into the right register. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50619 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-04 09:15:50 +00:00
Torok Edwin
529bd53411 processStore may delete the instruction, avoid 
using dyn_cast<> on already freed memory.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50618 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-04 08:51:25 +00:00
Torok Edwin
f6055806d4 Implement destructor for PostDominatorTree to eliminate a memory leak. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50607 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-03 20:25:26 +00:00
Devang Patel
7b39969528 Handle multiple return values. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50604 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-03 01:12:15 +00:00
Evan Cheng
22b942aa4d Add separate intrinsics for MMX / SSE shifts with i32 integer operands. This allow us to simplify the horribly complicated matching code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50601 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-03 00:52:09 +00:00
Devang Patel
f944c9a19e Do not sink getresult. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50600 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-03 00:36:30 +00:00
Devang Patel
201ebe3899 Add assert. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50596 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-02 22:13:33 +00:00
Dan Gohman
1d9cd50677 Fix a mistake in the computation of leading zeros for udiv. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50591 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-02 21:30:02 +00:00
Evan Cheng
48e8c80e17 Suppress -Wshorten-64-to-32 warnings for 64-bit hosts. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50590 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-02 21:15:08 +00:00
Chris Lattner
e818f770bb strength reduce exp2 into ldexp, rdar://5852514 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50586 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-02 18:43:35 +00:00
Chris Lattner
4446997e0a add a FIXME so we remember to eventually remove this code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50582 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-02 17:18:31 +00:00
Evan Cheng
082f1161b1 Undo r50574. We are already ensuring the folded load address is 16-byte aligned. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50578 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-02 17:01:01 +00:00
Evan Cheng
b609339a5c 80 column violation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50575 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-02 07:53:32 +00:00
Evan Cheng
ef6a512489 Not safe folding a load + FsXORPSrr into FsXORPSrm. It's loading a FR64 value but the load folding variant expects a 16-byte aligned address. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50574 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-02 07:50:58 +00:00
Bill Wendling
643310da6d Porting r50563 from Tak to mainline. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50564 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-02 00:43:20 +00:00
Dan Gohman
7ceda160b3 Fix a typo in a comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50562 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-02 00:05:03 +00:00
Dan Gohman
1fa850bdd2 Use push_back(...) instead of resize(1, ...), per review feedback. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50561 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-02 00:03:54 +00:00
Dan Gohman
cba3b44d25 Fix uninitialized uses of the FPC variable. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50558 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-01 23:40:44 +00:00
Dale Johannesen
796026711d Don't try to create PHIs of struct types. Fallout 
from x86-64 calling convention work.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50545 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-01 22:27:44 +00:00
Dan Gohman
e85b7585e9 Fix an overaggressive SimplifyDemandedBits optimization on urem. This 
fixes the 254.gap regression on x86 and the 403.gcc regression on x86-64.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50537 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-01 19:13:24 +00:00
Chris Lattner
6bf30ab347 don't randomly miscompile seto/setuo just because we are in 
ffastmath mode.  This fixes rdar://5902801, a miscompilation
of gcc.dg/builtins-8.c.

Bill, please pull this into Tak.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50523 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-01 07:26:11 +00:00
Chris Lattner
56b4f2bdf6 1) add '-debug' output 
2) Return NULL instead of false in several places for tidiness.
3) fix a bug optimizing  sprintf(p, "%c", x)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50521 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-01 06:39:12 +00:00
Chris Lattner
fd1cbbe9cf Delete the IPO simplify-libcalls and completely reimplement it as 
a FunctionPass.  This makes it simpler, fixes dozens of bugs, adds
a couple of minor features, and shrinks is considerably: from
2214 to 1437 lines.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50520 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-01 06:25:24 +00:00
Chris Lattner
5c5f1095ec fix a bug in my previous patch, a classic =/== bug. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50483 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-30 15:27:09 +00:00
Arnold Schwaighofer
30e62c098b Tail call optimization improvements: 
Move platform independent code (lowering of possibly overwritten
arguments, check for tail call optimization eligibility) from
target X86ISelectionLowering.cpp to TargetLowering.h and
SelectionDAGISel.cpp.

Initial PowerPC tail call implementation:

Support ppc32 implemented and tested (passes my tests and
test-suite llvm-test).  
Support ppc64 implemented and half tested (passes my tests).
On ppc tail call optimization is performed if 
  caller and callee are fastcc
  call is a tail call (in tail call position, call followed by ret)
  no variable argument lists or byval arguments
  option -tailcallopt is enabled
Supported:
 * non pic tail calls on linux/darwin
 * module-local tail calls on linux(PIC/GOT)/darwin(PIC)
 * inter-module tail calls on darwin(PIC)
If constraints are not met a normal call will be emitted.

A test checking the argument lowering behaviour on x86-64 was added.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50477 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-30 09:16:33 +00:00
Gabor Greif
8811080a65 fcntl.h is pretty standard on unix (without the sys/) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50475 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-30 08:53:22 +00:00
Owen Anderson
5023aa58ca This condition got inverted accidentally. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50473 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-30 07:16:33 +00:00
Chris Lattner
69ea9d2308 move lowering of llvm.memset -> store from simplify libcalls 
to instcombine.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50472 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-30 06:39:11 +00:00
Chris Lattner
12e6d20059 add a method for comparing to see if a value has a specified name. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50465 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-30 03:55:40 +00:00
Chris Lattner
ea8650cddf use string length computation to generalize several xforms. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50464 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-30 03:07:53 +00:00
Dale Johannesen
21d972ad04 Add comments for previous patch as requested. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50463 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-30 00:43:29 +00:00
Scott Michel
203b2d6eed Bug fixes and updates for CellSPU, syncing up with trunk. Most notable 
fixes are target-specific lowering of frame indices, fix constants generated
for the FSMBI instruction, and fixing SPUTargetLowering::computeMaskedBitsFor-
TargetNode().


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50462 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-30 00:30:08 +00:00
Scott Michel
82747a5484 Fix custom target lowering for zero/any/sign_extend: make sure that 
DAG.UpdateNodeOperands() is called before (not after) the call to
TLI.LowerOperation().


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50461 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-30 00:26:38 +00:00
Dale Johannesen
7b251e0474 Make eh_frame objects by 8-byte aligned on 64-bit 
targets.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50451 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-29 22:58:20 +00:00
Owen Anderson
02e9988020 Revert r50441. The original code was correct. Add some more comments so that I don't make the same mistake in the future. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50446 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-29 21:51:00 +00:00
Owen Anderson
9dcace3caf Fix a bug in memcpyopt where the memcpy-memcpy transform was never being applied because 
we were checking for it in the wrong order.  This caused a miscompilation because the
return slot optimization assumes that the call it is dealing with is NOT a memcpy.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50444 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-29 21:26:06 +00:00
Owen Anderson
7b6fafaa8d We should be returning true here since we've changed the function. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50442 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-29 21:02:46 +00:00
Owen Anderson
9862f31533 A lot of cleanups and documentation improvements, as well as a few corner case fixes. Most 
of this was suggested by Chris.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50441 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-29 20:59:33 +00:00
Owen Anderson
0396cd33ca Rename DeadLoopElimination to LoopDeletion, part 2. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50437 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-29 20:06:54 +00:00
Owen Anderson
d6864fee97 Rename DeadLoopElimination to LoopDeletion, part one. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50436 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-29 19:58:07 +00:00
Anton Korobeynikov
966e7997b5 Don't do stupid things: doInitialization(Module&) is not applicable to ModulePass :) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50433 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-29 18:16:22 +00:00
Chris Lattner
40700fe683 don't eliminate load from volatile value on paths where the load is dead. 
This fixes the second half of PR2262


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50430 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-29 17:28:22 +00:00
Chris Lattner
54545ac023 fix a subtle volatile handling bug. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50428 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-29 17:13:43 +00:00
Roman Levenstein
a0201d5204 Use std::set instead of std::priority_queue for the RegReductionPriorityQueue. 
This removes the existing bottleneck related to the removal of elements from 
the middle of the queue.

Also fixes a subtle bug in ScheduleDAGRRList::CapturePred:
It was updating the state of the SUnit before removing it. As a result, the
comparison operators were working incorrectly and this SUnit could not be removed 
from the queue properly.

Reviewed by Evan and Dan. Approved by Dan.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50412 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-29 09:07:59 +00:00
Chris Lattner
5b222d748a Implement more aggressive support for analyzing string length. This 
generalizes the previous code to handle the case when the string is not
an immediate to the strlen call (for example, crazy stuff like 
strlen(c ? "foo" : "bart"+1) -> 3).  This implements 
gcc.c-torture/execute/builtins/strlen-2.c.  I will generalize other
cases in simplifylibcalls to use the same routine later.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50408 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-29 06:56:02 +00:00
Owen Anderson
5f8b344255 Clarify what we mean by a dead loop. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50406 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-29 06:34:55 +00:00
Chris Lattner
cea1fdd174 don't delete the last store to an alloca if the store is volatile. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50390 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-29 04:58:38 +00:00
Chris Lattner
3fb2968f2f make the vector conversion magic handle multiple results. 
We now compile test2/test3 to:

_test2:
	## InlineAsm Start
	set %xmm0, %xmm1
	## InlineAsm End
	addps	%xmm1, %xmm0
	ret
_test3:
	## InlineAsm Start
	set %xmm0, %xmm1
	## InlineAsm End
	paddd	%xmm1, %xmm0
	ret

as expected.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50389 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-29 04:48:56 +00:00
Chris Lattner
41f6259a4b add support for multiple return values in inline asm. This is a step 
towards PR2094.  It now compiles the attached .ll file to:

_sad16_sse2:
	movslq	%ecx, %rax
	## InlineAsm Start
	%ecx %rdx %rax %rax %r8d %rdx %rsi
	## InlineAsm End
	## InlineAsm Start
	set %eax
	## InlineAsm End
	ret

which is pretty decent for a 3 output, 4 input asm.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50386 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-29 04:29:54 +00:00
Evan Cheng
8509fcf8eb Another extract_subreg coalescing bug. 
e.g.
vr1024<2> extract_subreg vr1025, 2
If vr1024 do not have the same register class as vr1025, it's not safe to coalesce this away. For example, vr1024 might be a GPR32 while vr1025 might be a GPR64.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50385 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-29 01:41:44 +00:00
Owen Anderson
e54cfdb32a Add some more comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50384 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-29 00:45:15 +00:00
Owen Anderson
d3d5b888d9 Remove debugging code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50383 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-29 00:39:24 +00:00
Owen Anderson
0ff7708a5b Add dead loop elimination, which removes dead loops for which we can compute 
the trip count.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50382 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-29 00:38:34 +00:00
Evan Cheng
33bf38ad88 Fix a bug in RegsForValue::getCopyToRegs() that causes cyclical scheduling units. If it's creating multiple CopyToReg nodes that are "flagged" together, it should not create a TokenFactor for it's chain outputs: 
c1, f1 = CopyToReg                                                                                                                                                                                             
c2, f2 = CopyToReg                                                                                                                                                                                             
c3     = TokenFactor c1, c2                                                                                                                                                                                    
 ...                                                                                                                                                                                                                      
       = user c3, ..., f2

Now that the two CopyToReg's and the user are "flagged" together. They effectively forms a single scheduling unit. The TokenFactor is now both an operand and a successor of the Flagged nodes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50376 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-28 22:07:13 +00:00
Dan Gohman
3e2dda63d0 Fix a pointer-arithmetic bug that caused 64-bit host pointer values to 
be truncated to 32 bits. This fixes the recent Benchmarks/McCat/09-vor
regression on x86-64, among other things.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50372 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-28 20:25:15 +00:00
Dan Gohman
00acf97feb Fix DSE to not eliminate volatile loads with no uses. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50370 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-28 19:51:27 +00:00
Dan Gohman
187db7b950 Evan pointed out that folding sext to zext may not be correct 
if the zext is not legal.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50368 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-28 18:47:17 +00:00
Dan Gohman
ebc3a3a3b2 Delete an unused constructor. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50367 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-28 18:28:49 +00:00
Dan Gohman
10a6b7ab65 Add a comment to CreateRegForValue that clarifies the handling of 
aggregate types.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50366 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-28 18:19:43 +00:00
Dan Gohman
0fe00906c8 Rewrite the comments for RegsForValue and its members, and 
reorder some of the members for clarity.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50365 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-28 18:10:39 +00:00
Ted Kremenek
c9715624fa Bug fix in BumpPtrAllocator: don't assume that all objects have the same alignment. "Bump" of the pointer for the next allocated object to be of the specified alignment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50362 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-28 17:58:07 +00:00
Dan Gohman
b20d4f8d49 Don't call size() on each iteration of the loop. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50361 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-28 17:42:03 +00:00
Gordon Henriksen
e2435da8ab Expose parameter attributes via C bindings. 
Patch by Anders Johnsen!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50360 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-28 17:37:06 +00:00
Dan Gohman
1f13c686df Fix the SVOffset values for loads and stores produced by 
memcpy/memset expansion. It was a bug for the SVOffset value
to be used in the actual address calculations.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50359 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-28 17:15:20 +00:00
Dan Gohman
23e8b71526 Teach InstCombine's ComputeMaskedBits what SelectionDAG's 
ComputeMaskedBits knows about cttz, ctlz, and ctpop. Teach
SelectionDAG's ComputeMaskedBits what InstCombine's knows
about SRem. And teach them both some things about high bits
in Mul, UDiv, URem, and Sub. This allows instcombine and
dagcombine to eliminate sign-extension operations in
several new cases.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50358 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-28 17:02:21 +00:00
Dan Gohman
8f0ad582e8 Teach DAGCombine to convert (sext x) to (zext x) when the 
sign-bit of x is known to be zero.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50357 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-28 16:58:24 +00:00
Mikhail Glushenkov
beb4d8293d Add support for response files to the CommandLine library. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50355 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-28 16:44:25 +00:00
Anton Korobeynikov
2810d675f8 Fix FP return for Win64 ABI 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50342 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-28 07:40:07 +00:00
Chris Lattner
6833b0601b Another collection of random cleanups. No functionality change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50341 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-28 07:16:35 +00:00
Chris Lattner
b606dba13b Remove the SmallVector ctor that converts from a SmallVectorImpl. This 
conversion open the door for many nasty implicit conversion issues, and
can be easily solved by initializing with (V.begin(), V.end()) when 
needed.

This patch includes many small cleanups for sdisel also.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50340 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-28 06:44:42 +00:00
Chris Lattner
8eaff0449c switch RegsForValue::Regs to be a SmallVector to avoid 
heap thrash on tiny (usually single-element) vectors.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50335 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-28 06:02:19 +00:00
Chris Lattner
ffba5821ee Fix PR2256, yet another miscompilation in simplifycfg of i 
multiple return values.

Bill, please pull this into Tak.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50332 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-28 00:19:07 +00:00
Chris Lattner
f899fce0c0 move static function out of anon namespace, no functionality change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50330 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-27 23:48:12 +00:00
Chris Lattner
acf8b01fd6 Another step to getting multiple result inline asm to work. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50329 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-27 23:44:28 +00:00
Chris Lattner
96bb622646 Allow asms to return multiple results by value. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50328 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-27 23:33:55 +00:00
Anton Korobeynikov
998a5bcc80 Properly lower vararg's FORMAL_ARGUMENTS node on win64 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50325 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-27 23:15:03 +00:00
Anton Korobeynikov
7255193b4f Handle fp80 for win64 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50324 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-27 22:54:09 +00:00
Chris Lattner
24e1a9d311 typo 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50316 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-27 01:49:46 +00:00
Chris Lattner
5a09690446 Implement a signficant optimization for inline asm: 
When choosing between constraints with multiple options,
like "ir", test to see if we can use the 'i' constraint and
go with that if possible.  This produces more optimal ASM in
all cases (sparing a register and an instruction to load it),
and fixes inline asm like this:

void test () {
  asm volatile (" %c0 %1 " : : "imr" (42), "imr"(14));
}

Previously we would dump "42" into a memory location (which
is ok for the 'm' constraint) which would cause a problem
because the 'c' modifier is not valid on memory operands.

Isn't it great how inline asm turns 'missed optimization'
into 'compile failed'??

Incidentally, this was the todo in 
PowerPC/2007-04-24-InlineAsm-I-Modifier.ll

Please do NOT pull this into Tak.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50315 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-27 00:37:18 +00:00
Chris Lattner
507ffd2423 isa+cast -> dyn_cast 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50314 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-27 00:16:18 +00:00
Chris Lattner
4376fea663 Move a bunch of inline asm code out of line. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50313 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-27 00:09:47 +00:00
Chris Lattner
5e764233f3 A few inline asm cleanups: 
- Make targetlowering.h fit in 80 cols.
  - Make LowerAsmOperandForConstraint const.
  - Make lowerXConstraint -> LowerXConstraint
  - Make LowerXConstraint return a const char* instead of taking a string byref.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50312 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-26 23:02:14 +00:00
Chris Lattner
2ba1c06d48 no need to implement this method and just have it call 
the default impl.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50311 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-26 22:59:59 +00:00
Chris Lattner
998182b380 When SRoA'ing a global variable, make sure the new globals get the 
appropriate alignment.  This fixes a miscompilation of 252.eon on
x86-64 (rdar://5891920).

Bill, please pull this into Tak.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50308 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-26 07:40:11 +00:00
Dale Johannesen
da30ccbe9a change comments per review 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50300 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-25 21:16:07 +00:00
Evan Cheng
44c0fd17e1 Extract the lower 64-bit if a MMX value is passed in a XMM register. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50292 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-25 20:13:28 +00:00
Evan Cheng
082948df9b Fix illegal MMX_MOVDQ2Qrr pattern. vector_extract result must be a scalar value. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50291 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-25 20:12:46 +00:00
Evan Cheng
10e864276b Special handling for MMX values being passed in either GPR64 or lower 64-bits of XMM registers. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50289 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-25 19:11:04 +00:00
Dan Gohman
23ce502cb7 Remove the code from CodeGenPrepare that moved getresult instructions 
to the block that defines their operands. This doesn't work in the
case that the operand is an invoke, because invoke is a terminator
and must be the last instruction in a block.

Replace it with support in SelectionDAGISel for copying struct values
into sequences of virtual registers.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50279 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-25 18:27:55 +00:00
Evan Cheng
80f5404e18 Fix MMX_MOVQ2DQrr pattern. It's illegal to do a bitconvert from a smaller type to a larger one. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50278 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-25 18:19:54 +00:00
Nate Begeman
6867991d54 Pull the code to perform an INSERT_VECTOR_ELT in memory out into its own 
function, and then use it to fix a bug in SplitVectorOp that expected inserts
to always have constant insertion indices.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50273 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-25 18:07:40 +00:00
Nate Begeman
4182db4327 Feedback from chris 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50271 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-25 17:45:52 +00:00
Chris Lattner
7c400dcb03 add a note 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50267 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-25 17:25:00 +00:00
Evan Cheng
682f81032f 80 col violation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50266 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-25 17:21:40 +00:00
Nick Lewycky
280a6e607d Remove 'unwinds to' support from mainline. This patch undoes r47802 r47989 
r48047 r48084 r48085 r48086 r48088 r48096 r48099 r48109 and r48123.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50265 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-25 16:53:59 +00:00
Evan Cheng
419ace9bda Not checking for intrinsics which do not have a chain operand. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50260 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-25 08:55:28 +00:00
Evan Cheng
cdda25d22b - Switch from std::set to SmallPtrSet. 
- Add comments.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50259 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-25 08:22:20 +00:00
Evan Cheng
ee472b1081 MMX argument passing fixes: 
On Darwin / Linux x86-32, v8i8, v4i16, v2i32 values are passed in MM[0-2].                                                                                                                                      
On Darwin / Linux x86-32, v1i64 values are passed in memory.                                                                                                                                                    
On Darwin x86-64, v8i8, v4i16, v2i32 values are passed in XMM[0-7].                                                                                                                                     
On Darwin x86-64, v1i64 values are passed in 64-bit GPRs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50257 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-25 07:56:45 +00:00
Nate Begeman
4be30ac0e2 Teach the PruningFunctionCloner how to look through loads with 
ConstantExpression GEPs pointing into constant globals.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50256 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-25 06:37:06 +00:00
Chris Lattner
25453ea49e Loosen up an assertion to allow intrinsics. I really have no 
idea what this code (findNonImmUse) does, so I'm only guessing 
that this is the right thing.  It would be really really nice
if this had comments and perhaps switched to SmallPtrSet
(hint hint) :)

This fixes rdar://5886601, a crash on gcc.target/i386/sse4_1-pblendw.c


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50252 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-25 05:13:01 +00:00
Chris Lattner
eede65ce6c Don't infininitely thread branches when a threaded edge 
goes back to the block, e.g.:

  Threading edge through bool from 'bb37.us.thread3829' to 'bb37.us' with cost: 1, across block:

bb37.us:		; preds = %bb37.us.thread3829, %bb37.us, %bb33
	%D1361.1.us = phi i32 [ %tmp36, %bb33 ], [ %D1361.1.us, %bb37.us ], [ 0, %bb37.us.thread3829 ]		; <i32> [#uses=2]
	%tmp39.us = icmp eq i32 %D1361.1.us, 0		; <i1> [#uses=1]
	br i1 %tmp39.us, label %bb37.us, label %bb42.us



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50251 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-25 04:12:29 +00:00
Gordon Henriksen
2566388bc4 PR2202: LLVMCreateInterpreter creates a JIT 
Applying fix by Frits van Bommel.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50249 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-25 02:52:30 +00:00
Evan Cheng
2749c72f30 Fix bug in x86 memcpy / memset lowering. If there are trailing bytes not handled by rep instructions, a new memcpy / memset is introduced for them. However, since source / destination addresses are already adjusted, their offsets should be zero. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50239 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-25 00:26:43 +00:00
Evan Cheng
79328661fa Adjust inline cost computation to be less aggressive. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50222 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-24 18:42:47 +00:00
Evan Cheng
a971dbdde2 - Check if a register is livein before removing it. It may have already been removed. 
- Do not iterate over SmallPtrSet, the order of iteration is not deterministic.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50209 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-24 09:06:33 +00:00
Chris Lattner
eb5f4092d9 code restructuring, not functionality change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50203 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-24 00:21:50 +00:00
Chris Lattner
7cb22ecf22 Don't replace multiple result of calls with undef, 
sccp tracks getresult values, not call values in this
case.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50202 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-24 00:19:54 +00:00
Chris Lattner
f4023a1ef6 code cleanup, no functionality change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50201 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-24 00:16:28 +00:00
Chris Lattner
c9e495c534 Split some code out of the main SimplifyCFG loop into its own function. 
Fix said code to handle merging return instructions together correctly
when handling multiple return values.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50199 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-24 00:01:19 +00:00
Dan Gohman
3c02aca238 Make these variables static. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50196 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-23 23:15:23 +00:00
Anton Korobeynikov
0d9e02cfd6 Drop dead includes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50192 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-23 22:44:03 +00:00
Anton Korobeynikov
8d3e74ed49 Adjust option names for C++ backend 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50190 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-23 22:37:03 +00:00
Anton Korobeynikov
5027652b8a First step of implementing PR1538: move llvm2cpp logic to new 'target' 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50189 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-23 22:29:24 +00:00
Dan Gohman
7661279ae0 Initial CBE support for multiple return values. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50187 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-23 21:49:29 +00:00
Chris Lattner
80b8f5dd6b tighten up verifier checks which missed cases where 
return instrs operands didn't match up with function results.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50182 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-23 20:33:41 +00:00
Dan Gohman
67780f108c Use isa instead of dyn_cast. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50181 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-23 20:25:16 +00:00
Dan Gohman
3dc34f682d Add support to codegen for getresult instructions with undef operands. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50180 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-23 20:21:29 +00:00
Devang Patel
6829157f49 Check type instead of no. of operands. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50179 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-23 20:18:29 +00:00
Dan Gohman
9ac0ac5675 Allow llvm-as to parse a getresult with an undef operand. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50175 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-23 20:11:27 +00:00
Dale Johannesen
1f530a59f7 Rewrite previous patch to suit Chris's preference. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50174 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-23 18:34:37 +00:00
Anton Korobeynikov
b013f5094c Unbreak JIT 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50173 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-23 18:26:03 +00:00
Anton Korobeynikov
941ff5818b Fix typo 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50169 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-23 18:24:25 +00:00
Anton Korobeynikov
dc28bd43d3 Only allow increase of max alignment value 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50168 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-23 18:23:50 +00:00
Anton Korobeynikov
d52bdaff0c Be over-conservative: scan for all used virtual registers and calculate maximal stack alignment in assumption, that there will be spill of vector register. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50167 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-23 18:23:30 +00:00
Anton Korobeynikov
856914fe00 Add X86 Maximal Stack Alignment Calculator Pass before RA 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50166 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-23 18:23:05 +00:00
Anton Korobeynikov
769b481e9f Add facility for pre-RA passes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50165 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-23 18:22:28 +00:00
Anton Korobeynikov
aadc780a56 Use precomputed value, if any 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50164 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-23 18:21:50 +00:00
Anton Korobeynikov
2c430cbf03 Do proper book-keeping of offsets and prologue/epilogue code for stack realignment 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50163 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-23 18:21:27 +00:00
Anton Korobeynikov
8e91ec5e29 If stack realignment is used - incoming args will use EBP as base register and locals - ESP 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50162 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-23 18:21:02 +00:00
Anton Korobeynikov
b51dce3013 Eastimate required stack alignment early, so we can decide, whether we will need frame pointer or not 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50161 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-23 18:20:17 +00:00
Anton Korobeynikov
874384e20f Cleanup 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50160 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-23 18:19:47 +00:00
Anton Korobeynikov
d1c133a051 Cleanup 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50159 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-23 18:19:23 +00:00
Anton Korobeynikov
82751e3eda Simplify 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50158 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-23 18:18:36 +00:00
Anton Korobeynikov
45709ae09b Make stack alignment options global for all targets 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50157 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-23 18:18:10 +00:00
Anton Korobeynikov
cfcd20e7be Provide option for enabling-disabling stack realignment 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50156 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-23 18:17:11 +00:00
Anton Korobeynikov
35410a493b Disable stack realignment for functions with dynamic-sized alloca's 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50155 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-23 18:16:43 +00:00
Anton Korobeynikov
890fe888be Provide ABI-correct stack alignment 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50154 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-23 18:16:16 +00:00
Anton Korobeynikov
9bbbea568c Provide convenient helpers for some operations 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50153 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-23 18:15:48 +00:00
Anton Korobeynikov
e201190eb7 Whitespace cleanup 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50152 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-23 18:15:11 +00:00
Chris Lattner
4af6ad3789 simplify code for propagation of constant arguments into 
callees.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50142 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-23 06:16:27 +00:00
Chris Lattner
e9625c6c88 Fix a number of bugs in ipconstantprop, simplify the code, fit in 80 cols, 
fix read after free bug (PR2238).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50141 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-23 05:59:23 +00:00
Chris Lattner
c6ee00b8ee Rewrite multiple return value handling in SCCP. Before, the -sccp pass 
would turn every getresult instruction into undef.  This helps with
rdar://5778210


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50140 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-23 05:38:20 +00:00
Chris Lattner
a925a14698 regenerate 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50139 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-23 05:37:08 +00:00
Chris Lattner
f7dedf2d85 Validate that the result of a function type is valid using shared 
logic with vmcore.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50138 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-23 05:36:58 +00:00
Chris Lattner
d52b62ae05 Enforce that multiple return values have to have at least one result. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50137 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-23 05:36:34 +00:00
Chris Lattner
42369b7e4b Verify that the operand of a getresult instruction is a 
call/invoke or undef.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50129 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-23 04:06:15 +00:00
Dale Johannesen
63e7eb4e12 Do not change the type of a ByVal argument to a 
type of a different size.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50121 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-23 01:03:05 +00:00
Evan Cheng
f30752cbcc Don't do: "(X & 4) >> 1 == 2 --> (X & 4) == 4" if there are more than one uses of the shift result. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50118 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-23 00:38:06 +00:00
Chris Lattner
a5ddb59a13 Start doing the significantly useful part of jump threading: handle cases 
where a comparison has a phi input and that phi is a constant.  For example,
stuff like:

  Threading edge through bool from 'bb2149' to 'bb2231' with cost: 1, across block:
bb2237:		; preds = %bb2231, %bb2149
	%tmp2328.rle = phi i32 [ %tmp2232, %bb2231 ], [ %tmp2232439, %bb2149 ]		; <i32> [#uses=2]
	%done.0 = phi i32 [ %done.2, %bb2231 ], [ 0, %bb2149 ]		; <i32> [#uses=1]
	%tmp2239 = icmp eq i32 %done.0, 0		; <i1> [#uses=1]
	br i1 %tmp2239, label %bb2231, label %bb2327

or

bb38.i298:		; preds = %bb33.i295, %bb1693
	%tmp39.i296.rle = phi %struct.ibox* [ null, %bb1693 ], [ %tmp39.i296.rle1109, %bb33.i295 ]		; <%struct.ibox*> [#uses=2]
	%minspan.1.i291.reg2mem.1 = phi i32 [ 32000, %bb1693 ], [ %minspan.0.i288, %bb33.i295 ]		; <i32> [#uses=1]
	%tmp40.i297 = icmp eq %struct.ibox* %tmp39.i296.rle, null		; <i1> [#uses=1]
	br i1 %tmp40.i297, label %implfeeds.exit311, label %bb43.i301

This triggers thousands of times in spec.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50110 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-22 21:40:39 +00:00
Chris Lattner
ae65b3c791 Dig through multiple levels of AND to thread jumps if needed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50106 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-22 20:46:09 +00:00
Chris Lattner
6bf77500c6 Teach jump threading to thread through blocks like: 
br (and X, phi(Y, Z, false)), label L1, label L2

This triggers once on 252.eon and 6 times on 176.gcc.  Blocks 
in question often look like this:

bb262:		; preds = %bb261, %bb248
	%iftmp.251.0 = phi i1 [ true, %bb261 ], [ false, %bb248 ]		; <i1> [#uses=4]
	%tmp270 = icmp eq %struct.rtx_def* %tmp.0.i, null		; <i1> [#uses=1]
	%bothcond = or i1 %iftmp.251.0, %tmp270		; <i1> [#uses=1]
	br i1 %bothcond, label %bb288, label %bb273

In this case, it is clear that it doesn't matter if tmp.0.i is null when coming from bb261.  When coming from bb248, it is all that matters.


Another random example:

check_asm_operands.exit:		; preds = %check_asm_operands.exit.thr_comm, %bb30.i, %bb12.i, %bb6.i413
	%tmp.0.i420 = phi i1 [ true, %bb6.i413 ], [ true, %bb12.i ], [ true, %bb30.i ], [ false, %check_asm_operands.exit.thr_comm ; <i1> [#uses=1]
	call void @llvm.stackrestore( i8* %savedstack ) nounwind 
	%tmp4389 = icmp eq i32 %added_sets_1.0, 0		; <i1> [#uses=1]
	%tmp4394 = icmp eq i32 %added_sets_2.0, 0		; <i1> [#uses=1]
	%bothcond80 = and i1 %tmp4389, %tmp4394		; <i1> [#uses=1]
	%bothcond81 = and i1 %bothcond80, %tmp.0.i420		; <i1> [#uses=1]
	br i1 %bothcond81, label %bb4398, label %bb4397

Here is the case from 252.eon:

bb290.i.i:		; preds = %bb23.i57.i.i, %bb8.i39.i.i, %bb100.i.i, %bb100.i.i, %bb85.i.i110
	%myEOF.1.i.i = phi i1 [ true, %bb100.i.i ], [ true, %bb100.i.i ], [ true, %bb85.i.i110 ], [ true, %bb8.i39.i.i ], [ false, %bb23.i57.i.i ]		; <i1> [#uses=2]
	%i.4.i.i = phi i32 [ %i.1.i.i, %bb85.i.i110 ], [ %i.0.i.i, %bb100.i.i ], [ %i.0.i.i, %bb100.i.i ], [ %i.3.i.i, %bb8.i39.i.i ], [ %i.3.i.i, %bb23.i57.i.i ]		; <i32> [#uses=3]
	%tmp292.i.i = load i8* %tmp16.i.i100, align 1		; <i8> [#uses=1]
	%tmp293.not.i.i = icmp ne i8 %tmp292.i.i, 0		; <i1> [#uses=1]
	%bothcond.i.i = and i1 %tmp293.not.i.i, %myEOF.1.i.i		; <i1> [#uses=1]
	br i1 %bothcond.i.i, label %bb202.i.i, label %bb301.i.i
  Factoring out 3 common predecessors.

On the path from any blocks other than bb23.i57.i.i, the load and compare 
are dead.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50096 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-22 07:05:46 +00:00
Chris Lattner
d38c14e6ed refactor some code, no functionality change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50094 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-22 06:36:15 +00:00
Chris Lattner
9d4b94d3e1 remove dead code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50080 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-22 03:21:48 +00:00
Chris Lattner
10c0d9179e optimize "p != gep p, ..." better. This allows us to compile 
getelementptr-seteq.ll into:

define i1 @test(i64 %X, %S* %P) {
	%C = icmp eq i64 %X, -1		; <i1> [#uses=1]
	ret i1 %C
}

instead of:

define i1 @test(i64 %X, %S* %P) {
	%A.idx.mask = and i64 %X, 4611686018427387903		; <i64> [#uses=1]
	%C = icmp eq i64 %A.idx.mask, 4611686018427387903		; <i1> [#uses=1]
	ret i1 %C
}

And fixes the second half of PR2235.  This speeds up the insertion sort
case by 45%, from 1.12s to 0.77s.  In practice, this will significantly
speed up for loops structured like:

for (double *P = Base + N; P != Base; --P)
  ...

Which happens frequently for C++ iterators.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50079 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-22 02:53:33 +00:00
Chris Lattner
eb411291fa more fallout from Nicholas' asmprinter patch. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50078 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-22 02:45:44 +00:00
Dan Gohman
61a9213440 Implement an x86-64 ABI detail of passing structs by hidden first 
argument. The x86-64 ABI requires the incoming value of %rdi to
be copied to %rax on exit from a function that is returning a
large C struct.

Also, add a README-X86-64 entry detailing the missed optimization
opportunity and proposing an alternative approach.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50075 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-21 23:59:07 +00:00
Dan Gohman
639cdc210b Fix an out-of-bounds access in -view-sunit-dags in the case of an 
empty ScheduleDAG.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50054 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-21 20:07:30 +00:00
Dan Gohman
0416b0a26d Fix the encoding of the MMX movd that moves from MMX to 64-bit GPR. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50053 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-21 19:52:29 +00:00
Dan Gohman
92c7b65c91 Fix the way AliasSet::print prints "may alias". 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50051 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-21 19:48:48 +00:00
Chris Lattner
037c781de7 fix grammar-o, thanks to Duncan for noticing. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50047 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-21 18:25:01 +00:00
Owen Anderson
4bda6e47e9 Remove unneeded #include's. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50035 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-21 07:47:38 +00:00
Owen Anderson
a8bd65835b Refactor memcpyopt based on Chris' suggestions. Consolidate several functions 
and simplify code that was fallout from the separation of memcpyopt and gvn.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50034 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-21 07:45:10 +00:00
Duncan Sands
e47d98200e Fix a "large integer implicitly truncated to unsigned type" 
warning.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50033 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-21 07:35:28 +00:00
Chris Lattner
ea705199af don't print dominators every time it is computed with -debug. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50032 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-21 06:19:02 +00:00
Chris Lattner
a1b5858fda another bug introduced in r47802 by nicholas, for no apparent reason. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50031 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-21 06:12:55 +00:00
Chris Lattner
7d717a0b70 Add an ugly note. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50029 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-21 04:46:30 +00:00
Chris Lattner
96c5b2f8c7 fix a bug introduced by Nicholas' "unwinds to" stuff: we 
lost newlines between blocks.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50024 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-21 04:20:33 +00:00
Chris Lattner
281def9456 don't assume that the argument passed to fprintf("%s" is a string. This 
fixes a crash in opt on 433.milc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50023 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-21 03:18:33 +00:00
Chris Lattner
2cc675180b Use the new SplitBlockPredecessors to implement a todo. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50022 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-21 02:57:57 +00:00
Chris Lattner
54b9c3ba2a Move SplitBlockPredecessors out of loopsimplify into BasicBlockUtils.h 
as a global helper function.  At the same type, switch it from taking
a vector of predecessors to an arbitrary sequential input.  This allows
us to switch LoopSimplify to use a SmallVector for various temporary
vectors that it passed into SplitBlockPredecessors.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50020 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-21 01:28:02 +00:00
Chris Lattner
1b58678d54 Move domtree/frontier updating earlier, allowing us to use it to update phi 
nodes, removing a hack.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50019 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-21 01:05:08 +00:00
Chris Lattner
b85979434d Factor dominator tree and frontier updating into SplitBlockPredecessors 
instead of doing it after every call.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50018 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-21 00:54:38 +00:00
Chris Lattner
48a80b07bd fit some more code in 80 cols. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50016 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-21 00:25:49 +00:00
Chris Lattner
34093a634a simplify code, fit in 80 cols. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50015 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-21 00:23:14 +00:00
Chris Lattner
862f27ebab fit in 80 cols 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50014 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-21 00:19:16 +00:00
Nicolas Geoffray
580631a73a Be pessimistic in computing the buffer size when aligning. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50008 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-20 23:39:44 +00:00
Nicolas Geoffray
546e36a2c1 Don't forget to update the current operand when getting the size of an instruction. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50007 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-20 23:36:47 +00:00
Chris Lattner
bd3401fa98 finish the first cut of a jump threading pass implementation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50006 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-20 22:39:42 +00:00
Chris Lattner
0cfe85be0b replace a slow and verbose version of Instruction::isUsedOutsideOfBlock with 
a call to Instruction::isUsedOutsideOfBlock.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50005 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-20 22:18:22 +00:00
Chris Lattner
7ae40e7d8a add a handy helper method to instruction, useful for determining 
whether it is used outside of some block.  This can be used to see
if there are any non-local references, for example.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50004 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-20 22:11:30 +00:00
Chris Lattner
f9065a904f we can only thread blocks when there is a pred we can determine the succ of. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50003 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-20 21:18:09 +00:00
Chris Lattner
177480b7ed improve comments, infrastructure, and add some validity checks for threading. 
Add a cost function.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50002 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-20 21:13:06 +00:00
Chris Lattner
8383a7b7a6 Add a new Jump Threading pass, which will handle cases 
such as those in PR2235.  Right now the pass is not very
effective. :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50000 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-20 20:35:01 +00:00
Chris Lattner
3e5d1d8d08 hopefully resolve PR2240 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49999 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-20 19:59:12 +00:00
Chris Lattner
0e4b6c7551 rearrange some code, simplify handling of shifts. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49995 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-20 18:24:14 +00:00
Dale Johannesen
9dd2ce46c5 Check we aren't trying to convert PPC long double. 
This fixes the testsuite failure on ppcf128-4.ll.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49994 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-20 18:23:46 +00:00
Nicolas Geoffray
5913e6c5db Cosmetic changes, as suggested by Evan. No functionality changes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49993 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-20 17:44:19 +00:00
Dale Johannesen
a0c8fc6f28 (re)fix handling of UGT. Pointed out by Nick Lewycky. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49991 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-20 16:58:57 +00:00
Torok Edwin
3eaee31393 g++-4.3 build-fix: CHAR_BIT requires <climits>. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49989 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-20 08:33:11 +00:00
Nicolas Geoffray
fd7d99120b Do not hold the JIT lock when materializing a function and verify if the 
function has already been codegen'd. This is required by the Java class loading
mechanism which executes Java code when materializing a function.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49988 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-20 08:33:02 +00:00
Chris Lattner
bd381a777b A better fix for my previous patch, MOVZQI2PQIrr just requires SSE2. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49986 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-20 05:52:46 +00:00
Dale Johannesen
79f82f9fd5 Check that APFloat::convert is not trying to target 
ppc long double, which doesn't work.

This may break some stuff temporarily, but I want to
avoid the propagation of code that assumes this works.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49983 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-20 01:34:03 +00:00
Chris Lattner
d8eb63fc72 regenerate 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49978 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-20 00:41:19 +00:00
Chris Lattner
02a260aa11 Switch to using Simplified ConstantFP::get API. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49977 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-20 00:41:09 +00:00
Chris Lattner
eb9c8e1e3f Use simplified ConstantFP::get method, fix a bug handling frem x, 0 with long doubles. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49976 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-20 00:26:06 +00:00
Chris Lattner
d881ad2c57 Implement PR2206. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49967 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-19 22:17:26 +00:00
Chris Lattner
1c14c29746 refactor handling of symbolic constant folding, picking up 
a few new cases( see Integer/a1.ll), but not anything that
would happen in practice.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49965 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-19 21:58:19 +00:00
Chris Lattner
61783d7322 indentation fix. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49964 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-19 21:13:00 +00:00
Chris Lattner
bcd203cf86 Allow argpromote to promote struct arguments with a specified number 
of elements.  Patch by Matthijs Kooijman!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49962 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-19 19:50:01 +00:00
Evan Cheng
8608f2eff2 64-bit atomic operations. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49949 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-19 02:30:38 +00:00
Evan Cheng
94d7b02c5a Also LXCHG64 -> XCHG64rm. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49948 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-19 02:05:42 +00:00
Evan Cheng
54fc97dcdc PPC32 atomic operations. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49947 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-19 01:30:48 +00:00
Evan Cheng
bb6939dcff xchg which references a memory operand does not need to lock prefix. Atomicity is guaranteed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49946 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-19 01:20:30 +00:00
Dan Gohman
f4423b1e45 Teach llvm-as to accept function types with multiple return types. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49945 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-19 00:24:39 +00:00
Dale Johannesen
cf363181c1 Fix a scalar evolution bug. Reversing everything 
does not work because of 0; 2>0 but -2U is also >0.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49928 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-18 21:38:31 +00:00
Nicolas Geoffray
dc17ab2bf0 Enable jitting with a known memory size. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49924 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-18 20:59:31 +00:00
Duncan Sands
37bcda3de9 Implement a bit more softfloat support in 
LegalizeTypes.  Correct the load logic so
that it actually works, and also teach it
to handle floating point extending loads.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49923 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-18 20:56:03 +00:00
Dan Gohman
28269139ee Fix the handling of va_copy on x86-64. As of llvm-gcc r49920 
llvm-gcc is now lowering va_copy on x86-64, so this completes
the fix for PR2230.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49922 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-18 20:55:41 +00:00
Evan Cheng
7e03280b53 - Fix atomic operation JIT encoding. 
- Remove unused instructions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49921 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-18 20:55:36 +00:00
Duncan Sands
4cc0456456 Add some more FIXME's for indexed loads and stores. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49916 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-18 20:27:12 +00:00
Duncan Sands
41edfb8ae1 Provide an explicit list of operands to MakeLibcall, 
rather than having it suck them out of a node.  Add
a bunch of new libcalls, and remove dead softfloat
code (dead, because FloatToInt is used not Expand
in this case).  Note that indexed stores probably
aren't handled properly, likewise for loads.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49915 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-18 20:25:14 +00:00
Evan Cheng
a8f720d695 Correct comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49913 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-18 19:25:26 +00:00
Evan Cheng
883d260045 Not safe to "kill" a register if its live range extends pass the end of block branch. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49911 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-18 19:22:23 +00:00
Evan Cheng
3f73beaeb2 Also support Intel asm syntax. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49878 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-17 23:35:10 +00:00
Dan Gohman
35b31bea0d Remove the implicit conversion from SDOperandPtr to SDOperand*; this 
may fix a build error on Visual Studio.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49876 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-17 23:02:12 +00:00
Evan Cheng
9d1a81a23c Fix assembly code for atomic operations. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49869 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-17 21:26:35 +00:00
Evan Cheng
639f493ebf Be more careful with insert_subreg and extract_subreg where either source or destination operand has already been coalesced with another register that's defined by a insert_subreg or extract_subreg. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49843 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-17 07:58:04 +00:00
Owen Anderson
241f65321e Make GVN able to remove unnecessary calls to read-only functions again. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49842 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-17 05:36:50 +00:00
Bill Wendling
f231778269 Use correct name for method in comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49841 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-17 05:20:39 +00:00
Dan Gohman
499c1bd358 Correct the SrcValue information in the Expand code for va_copy. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49839 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-17 02:09:26 +00:00
Scott Michel
5788bca1c2 Remove unused variable 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49838 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-17 01:30:44 +00:00