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768b6f281e
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22970 Commits

Author SHA1 Message Date
Dale Johannesen
768b6f281e 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.

llvm-svn: 51118
 2008-05-14 20:12:51 +00:00
Evan Cheng
e7684b9e91 Silence some compiler warnings. 
llvm-svn: 51115
 2008-05-14 20:07:51 +00:00
Devang Patel
047ba6df54 Simplify internalize pass. Add test case. 
Patch by Matthijs Kooijman!

llvm-svn: 51114
 2008-05-14 20:01:01 +00:00
Dan Gohman
cd29e1fa60 When bit-twiddling CondCode values for integer comparisons produces 
SETOEQ, is it does with (SETEQ & SETULE), map it to SETEQ.

llvm-svn: 51112
 2008-05-14 18:17:09 +00:00
Sanjiv Gupta
7cc26f0421 Detabification. Fixed indentation and spacing. 
Changed cout to DOUT, and TODOs to FIXMEs.
Other changes as per coding conventions.

llvm-svn: 51105
 2008-05-14 11:31:39 +00:00
Nicolas Geoffray
9f633abc38 Fix typo in ParameterAttribute fields usage. Add an include 
to make the Cpp backend output compilable.

llvm-svn: 51095
 2008-05-14 07:52:03 +00:00
Sanjiv Gupta
3563f7bc68 Fixed the file description header at the top to remove the developer name. 
llvm-svn: 51094
 2008-05-14 06:50:01 +00:00
Evan Cheng
95987c2586 Doh. Alignment is in bytes, not in bits. 
llvm-svn: 51092
 2008-05-14 02:49:43 +00:00
Dan Gohman
f9d5689496 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.

llvm-svn: 51091
 2008-05-14 01:58:56 +00:00
Dan Gohman
ffe0b1f40e Whitespace cleanups. 
llvm-svn: 51089
 2008-05-14 00:43:10 +00:00
Dan Gohman
fe628b229c Make PreVerifyID, IntSigsEnd, and KillSigsEnd const. 
llvm-svn: 51088
 2008-05-14 00:42:30 +00:00
Dan Gohman
4dc39991f8 Split the loop unroll mechanism logic out into a utility function. 
Patch by Matthijs Kooijman!

llvm-svn: 51083
 2008-05-14 00:24:14 +00:00
Owen Anderson
6a2ee9af7a 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.

llvm-svn: 51082
 2008-05-13 23:18:30 +00:00
Gabor Greif
dd2f5c797d 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.

llvm-svn: 51078
 2008-05-13 22:51:52 +00:00
Devang Patel
bae88af8c1 Dominance Frontier is cfg only pass. 
llvm-svn: 51075
 2008-05-13 22:43:21 +00:00
Owen Anderson
5e6431c140 Fix memdep's handling of invokes when finding the dependency of another call 
instruction.  This fixes some Ada miscompiles reported in PR2324.

llvm-svn: 51069
 2008-05-13 21:25:37 +00:00
Dale Johannesen
676a1d026b Fix for PR 2323, infinite loop in tail dup. 
llvm-svn: 51063
 2008-05-13 20:06:43 +00:00
Chris Lattner
a11adf725d add a note 
llvm-svn: 51062
 2008-05-13 19:56:20 +00:00
Evan Cheng
cb56638548 - Fix the pasto in the fix for a previous pasto. 
- Incorporate Chris' comment suggestion.

llvm-svn: 51061
 2008-05-13 18:59:59 +00:00
Chris Lattner
c9eb6a7d64 add a note 
llvm-svn: 51060
 2008-05-13 18:48:54 +00:00
Nate Begeman
c290daf581 Fix one more encoding bug. 
llvm-svn: 51057
 2008-05-13 17:52:09 +00:00
Evan Cheng
cf6928983b - Don't treat anyext 16-bit load as a 32-bit load if it's volatile. 
- Correct a pasto.

llvm-svn: 51054
 2008-05-13 16:45:56 +00:00
Owen Anderson
7f6db08b5f Make the non-local CSE safety checks slightly more thorough. 
llvm-svn: 51035
 2008-05-13 13:41:23 +00:00
Sanjiv Gupta
fa065a1455 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))

llvm-svn: 51027
 2008-05-13 09:02:57 +00:00
Evan Cheng
9e15622879 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

llvm-svn: 51026
 2008-05-13 08:35:03 +00:00
Owen Anderson
c54c61634c Add support for non-local CSE of read-only calls. 
llvm-svn: 51024
 2008-05-13 08:17:22 +00:00
Gabor Greif
22afb1f8f0 Derive GetResultInst from UnaryInstruction, this simplifies code and removes a FIXME. 
llvm-svn: 51023
 2008-05-13 07:09:08 +00:00
Dan Gohman
138a53b303 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.

llvm-svn: 51022
 2008-05-13 02:05:11 +00:00
Nate Begeman
b4412e7652 80 col / tabs fixes 
llvm-svn: 51021
 2008-05-13 01:48:26 +00:00
Nate Begeman
b9a3d141aa Fix and encoding error in the psrad xmm, imm8 instruction. 
llvm-svn: 51020
 2008-05-13 01:47:52 +00:00
Evan Cheng
e4ee4c2870 On x86, it's safe to treat i32 load anyext as a normal i32 load. Ditto for i8 anyext load to i16. 
llvm-svn: 51019
 2008-05-13 00:54:02 +00:00
Dan Gohman
bab18cae46 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.

llvm-svn: 51017
 2008-05-13 00:00:25 +00:00
Nate Begeman
5d939498c3 Teach Legalize how to scalarize VSETCC 
Teach X86 a few more vsetcc patterns.  Custom lowering for unsupported ones is next.

llvm-svn: 51009
 2008-05-12 23:09:43 +00:00
Evan Cheng
fcbdc8bd6e Xform bitconvert(build_pair(load a, load b)) to a single load if the load locations are at the right offset from each other. 
llvm-svn: 51008
 2008-05-12 23:04:07 +00:00
Dale Johannesen
b4da55c4a3 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.

llvm-svn: 51006
 2008-05-12 22:53:12 +00:00
Bill Wendling
2f2610cf51 Constify isSourceDefinedByImplicitDef function. Otherwise, just formatting 
changes that don't change functionality.

llvm-svn: 51004
 2008-05-12 22:15:05 +00:00
Bill Wendling
646f3458c4 Constify the machine instruction passed into the 
"is{Trivially,Really}ReMaterializable" methods.

llvm-svn: 51001
 2008-05-12 20:54:26 +00:00
Nate Begeman
2ae55cecc6 Initial X86 codegen support for VSETCC. 
llvm-svn: 51000
 2008-05-12 20:34:32 +00:00
Dale Johannesen
25896f8e93 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.

llvm-svn: 50999
 2008-05-12 20:33:57 +00:00
Nate Begeman
a3a9e89b61 Simplify some checks 
llvm-svn: 50998
 2008-05-12 20:33:52 +00:00
Dan Gohman
efa0925915 Fix a copy+paste bug; pseudo-instructions shouldn't have 
encoding information.

llvm-svn: 50997
 2008-05-12 20:22:45 +00:00
Nate Begeman
e9476924d9 Pointer comparisons should use icmp, not vicmp 
llvm-svn: 50996
 2008-05-12 20:16:55 +00:00
Owen Anderson
0256b368f8 Go back to passing the analyses around as parameters. 
llvm-svn: 50995
 2008-05-12 20:15:55 +00:00
Nate Begeman
b72a398339 Pointer comparisons should be handled by icmp, not vicmp :) 
llvm-svn: 50994
 2008-05-12 20:11:05 +00:00
Nate Begeman
6258a36fe3 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

llvm-svn: 50992
 2008-05-12 20:01:56 +00:00
Evan Cheng
c7e9acfed7 Refactor isConsecutiveLoad from X86 to TargetLowering so DAG combiner can make use of it. 
llvm-svn: 50991
 2008-05-12 19:56:52 +00:00
Bill Wendling
f3c4b7fbb5 Revert the previous commit. Go ahead and hoist rematerializable instructions. 
llvm-svn: 50990
 2008-05-12 19:47:18 +00:00
Nate Begeman
11c0772a30 Add support for vicmp/vfcmp codegen, more legalize support coming. 
This is necessary to unbreak the build.

llvm-svn: 50988
 2008-05-12 19:40:03 +00:00
Bill Wendling
74cabebb44 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.

llvm-svn: 50987
 2008-05-12 19:38:32 +00:00
Nate Begeman
e2b25610bb Fix build breakage 
llvm-svn: 50986
 2008-05-12 19:23:22 +00:00