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Author SHA1 Message Date
Bill Wendling
c0062fb755 Hacker's Delight says, "Signed integer overflow of addition occurs if and only 
if the operands have the same sign and the sum has sign opposite to that of the
operands."


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60014 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-25 08:12:19 +00:00
Chris Lattner
3b48501adc Teach MatchScaledValue to handle Scales by 1 with MatchAddr (which 
can recursively match things) and scales by 0 by ignoring them.
This triggers once in 403.gcc, saving 1 (!!!!) instruction in the 
whole huge app.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60013 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-25 07:25:26 +00:00
Chris Lattner
88a5c832ac significantly refactor all the addressing mode matching logic 
into a new AddressingModeMatcher class.  This makes it easier
to reason about and reduces passing around of stuff, but has
no functionality change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60012 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-25 07:09:13 +00:00
Chris Lattner
bb3204a440 refactor all the constantexpr/instruction handling code out into a 
new FindMaximalLegalAddressingModeForOperation helper method.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60011 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-25 05:15:49 +00:00
Chris Lattner
7ad1c7342b another minor tweak 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60010 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-25 04:47:41 +00:00
Chris Lattner
088a1e84ea minor cleanups no functionality change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60009 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-25 04:42:10 +00:00
Oscar Fuentes
b6c2202786 CMake: Documented two cmake variables. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60008 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-25 04:23:36 +00:00
Scott Michel
50843c0741 CellSPU: Relax constraints on when to generate a X-form address, evidently 
they were too tight according to bug 3126.

Fix bug 3126.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60006 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-25 04:03:47 +00:00
Scott Michel
97d0a603e6 CellSPU: test should use shlqby, not shlqbyi 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60001 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-25 01:30:37 +00:00
Bill Wendling
39ccca3260 XFAIL this test. A recent CellSPU check-in broke it. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60000 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-25 00:56:34 +00:00
Dan Gohman
21d9003087 Initial support for anti-dependence breaking. Currently this code does not 
introduce any new spilling; it just uses unused registers.

Refactor the SUnit topological sort code out of the RRList scheduler and
make use of it to help with the post-pass scheduler.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59999 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-25 00:52:40 +00:00
Scott Michel
662165d224 CellSPU: Fix mnemonic typo in pattern; "shlqbyi" -> "shlqby". 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59998 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-25 00:23:16 +00:00
Bill Wendling
9822296b18 Testcase for constant CFStrings. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59992 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-24 23:28:09 +00:00
Chris Lattner
85fa13c02d rearrange and tidy some code, no functionality change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59990 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-24 22:44:16 +00:00
Chris Lattner
4744d85c50 minor cleanups to debug code, no functionality change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59989 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-24 22:40:05 +00:00
Chris Lattner
8d0d603a0b reenable test 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59986 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-24 21:27:20 +00:00
Chris Lattner
ae297f8da5 reenable the right part of the code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59985 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-24 21:26:21 +00:00
Bill Wendling
612e0b701f Temporarily XFAIL this test. r59976 and r59972 broke it. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59981 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-24 20:43:33 +00:00
Dan Gohman
ad38b6e4e5 Move the scheduler constructor functions to SchedulerRegistry.h, to 
simplify header dependencies for front-ends that just want to choose
a scheduler and don't need all the scheduling machinery declarations.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59978 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-24 19:53:21 +00:00
Dan Gohman
d59b083d22 Fix an unused-parameter warning. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59977 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-24 19:51:59 +00:00
Chris Lattner
7f2d6efbaa revert an accidental commit, this fixes the regression on test/CodeGen/X86/isel-sink.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59976 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-24 19:40:34 +00:00
Chris Lattner
47f5751c80 Fix 3113: If we have a dead cyclic PHI, replace the whole thing 
with an undef.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59972 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-24 19:25:36 +00:00
Bill Wendling
41ea7e7eb3 - Make lowering of "add with overflow" customizable by back-ends. 
- Mark "add with overflow" as having a custom lowering for X86. Give it a null
  lowering representation for now.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59971 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-24 19:21:46 +00:00
Scott Michel
045a14503f CellSPU: 
(a) Slight rethink on i64 zero/sign/any extend code - use a shuffle to
    directly zero-extend i32 to i64, but use rotates and shifts for
    sign extension. Also ensure unified register consistency.
(b) Add new test harness for i64 operations: i64ops.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59970 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-24 18:20:46 +00:00
Dan Gohman
942b8c8533 Check in the rest of this change. The isAntiDep flag needs to be passed 
to removePred because an SUnit can both data-depend and anti-depend
on the same SUnit.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59969 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-24 17:33:52 +00:00
Dan Gohman
974b5f53f7 Pass the isAntiDep argument. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59968 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-24 17:24:27 +00:00
Dan Gohman
cb72dd6776 Run post-RA scheduling after branch folding, as it tends to 
obscure tail-merging opportunities.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59967 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-24 17:22:52 +00:00
Dan Gohman
f003276ee6 Fix a few HTML tidiness issues. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59966 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-24 17:18:39 +00:00
Scott Michel
104de4390b CellSPU: 
(a) Improve the extract element code: there's no need to do gymnastics with
    rotates into the preferred slot if a shuffle will do the same thing.
(b) Rename a couple of SPUISD pseudo-instructions for readability and better
    semantic correspondence.
(c) Fix i64 sign/any/zero extension lowering.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59965 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-24 17:11:17 +00:00
Dan Gohman
fd9ddc066e Delete some spurious characters. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59964 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-24 16:45:15 +00:00
Dan Gohman
a7ab2bffae Fix some "</p>"s. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59963 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-24 16:35:31 +00:00
Dan Gohman
641b279710 Some documentation for LegalizeTypes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59962 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-24 16:27:17 +00:00
Matthijs Kooijman
faa3d82a31 Minor fix debug for register allocation debug output. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59961 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-24 16:01:21 +00:00
Duncan Sands
25cf2275ff If the type legalizer actually legalized anything 
(this doesn't happen that often, since most code
does not use illegal types) then follow it by a
DAG combiner run that is allowed to generate
illegal operations but not illegal types.  I didn't
modify the target combiner code to distinguish like
this between illegal operations and illegal types,
so it will not produce illegal operations as well
as not producing illegal types.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59960 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-24 14:53:14 +00:00
Matthijs Kooijman
19ea77f09d Fix comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59958 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-24 11:44:00 +00:00
Torok Edwin
9682607ad6 NULL, unique pointers from malloc(0), and freed pointers are legal values for 
noalias attribute parameters/return values.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59955 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-24 08:02:24 +00:00
Evan Cheng
027fdbe3ba Move target independent td files from lib/Target/ to include/llvm/Target so they can be distributed along with the header files. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59953 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-24 07:34:46 +00:00
Evan Cheng
24ac408ce8 Eliminate some unused variable compile time warnings. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59952 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-24 07:09:49 +00:00
Bill Wendling
d21c6ef9d0 Test add-with-overflow with fast ISel. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59945 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-24 05:23:38 +00:00
Nick Lewycky
b2b32fd3fe Seriously strengthen the guarantee offered by noalias on a function's return 
value. It must now be as if the pointer were allocated and has not escaped to
the caller. Thanks to Dan Gohman for pointing out the error in the original
and helping devise this definition.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59940 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-24 05:00:44 +00:00
Nick Lewycky
02ff308aa1 Extend the 'noalias' attribute to function return values. This is intended to 
indicate functions that allocate, such as operator new, or list::insert. The
actual definition is slightly less strict (for now).

No changes to the bitcode reader/writer, asm printer or verifier were needed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59934 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-24 03:41:24 +00:00
Mon P Wang
9f22a4aaaf Added missing description for -disable-mmx option. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59929 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-24 02:10:43 +00:00
Bill Wendling
def27392c1 Add support for llvm.uadd.with.overflow. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59926 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-24 01:38:29 +00:00
Scott Michel
2cd91804ec Roll back rev 59890, since Chris says this can never happen. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59914 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-23 19:22:48 +00:00
Duncan Sands
03228089d5 Rename SetCCResultContents to BooleanContents. In 
practice these booleans are mostly produced by SetCC,
however the concept is more general.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59911 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-23 15:47:28 +00:00
Chris Lattner
cdfc51ffe3 Make JIT::runFunction handle functions with non-C calling conventions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59904 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-23 08:00:11 +00:00
Mon P Wang
3c81d35e7d Added -disable-mmx using a patch from Preston Gurd. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59901 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-23 04:37:22 +00:00
Mon P Wang
6cce3dae90 Added check to avoid generating extract subvector beyond the end of the vector when normalizing vector shuffles. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59900 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-23 04:35:05 +00:00
Misha Brukman
dccb025768 Fixed named anchor for llvm.stackprotector intrinsic. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59893 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-22 23:55:29 +00:00
Scott Michel
7a1c9e9cb7 CellSPU: Fix bug 3056. Varadic extract_element was not implemented (nor was it 
ever conceived to occur).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59891 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-22 23:50:42 +00:00