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c573f70ae4
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25722 Commits

Author SHA1 Message Date
Nick Lewycky
c573f70ae4 Add a utility function that detects whether a loop is guaranteed to be finite. 
Use it to safely handle less-than-or-equals-to exit conditions in loops. These
also occur when the loop exit branch is exit on true because SCEV inverses the
icmp predicate.

Use it again to handle non-zero strides, but only with an unsigned comparison
in the exit condition.

llvm-svn: 59528
 2008-11-18 15:10:54 +00:00
Bill Wendling
3460a79979 Rename stackprotector_create intrinsic to stackprotector. 
llvm-svn: 59519
 2008-11-18 11:01:33 +00:00
Bill Wendling
5ba12c88c1 Cast to remove warning about comparing signed and unsigned. 
llvm-svn: 59518
 2008-11-18 10:57:27 +00:00
Nicolas Geoffray
3cd13e7e65 Implement support for JIT exceptions on X86_64. Relative offsets are 
encoded on 32 bytes, and the personality function is not encoded as
relative.

llvm-svn: 59516
 2008-11-18 10:44:46 +00:00
Duncan Sands
8f98029149 Remove unused variable. 
llvm-svn: 59515
 2008-11-18 10:39:04 +00:00
Duncan Sands
3f0dbb4ead Reapply r59464, this time using the correct type 
when softening FNEG.

llvm-svn: 59513
 2008-11-18 09:15:03 +00:00
Bill Wendling
485d094231 Remove the stackprotector_check intrinsic. Use a volatile load instead. 
llvm-svn: 59504
 2008-11-18 07:30:57 +00:00
Bill Wendling
3a50ecd70f - Use "moveAfter" instead of "remove/insert" of a basic block. 
- Use less indentation in coding.
- Shorten description.
- Update comments.
- Move code around

llvm-svn: 59496
 2008-11-18 05:32:11 +00:00
Dan Gohman
8e3759ee45 Fix a typo in a comment. 
llvm-svn: 59489
 2008-11-18 02:50:01 +00:00
Dan Gohman
bc8cfae5c3 Change SUnit's dump method to take a ScheduleDAG* instead of 
a SelectionDAG*.

llvm-svn: 59488
 2008-11-18 02:06:40 +00:00
Bill Wendling
33cf8ff597 Revert r59464. It was causing this failure: 
Running /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.src/test/CodeGen/XCore/dg.exp ...
FAIL: /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.src/test/CodeGen/XCore/fneg.ll
Failed with signal(SIGABRT) at line 1
while running:  llvm-as < /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.src/test/CodeGen/XCore/fneg.ll |  llc -march=xcore > fneg.ll.tmp1.s
Assertion failed: (VT.isFloatingPoint() && "Cannot create integer FP constant!"), function getConstantFP, file /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.src/lib/CodeGen/SelectionDAG/SelectionDAG.cpp, line 913.
0   llc                                 0x0092115c _ZN4llvm3sys18RemoveFileOnSignalERKNS0_4PathEPSs + 844
1   libSystem.B.dylib                   0x9217809b _sigtramp + 43
2   ???                                 0xffffffff 0x0 + 4294967295
3   libSystem.B.dylib                   0x921f0ec2 raise + 26
4   libSystem.B.dylib                   0x9220047f abort + 73
5   libSystem.B.dylib                   0x921f2063 __assert_rtn + 101
6   llc                                 0x005a5b0a _ZN4llvm12SelectionDAG13getConmake[1]: *** [check-local] Error 1
make: *** [check] Error 2

llvm-svn: 59487
 2008-11-18 01:49:24 +00:00
Devang Patel
2a0aa9fa51 Give SIToFPInst preference over UIToFPInst because it is faster on platforms that are widely used. 
llvm-svn: 59476
 2008-11-18 00:40:02 +00:00
Dan Gohman
60cb69a7b5 Avoid using a loop in ReleasePred and ReleaseSucc methods to compute the 
new CycleBound value. Instead, just update CycleBound on each call.
Also, make ReleasePred and ReleaseSucc methods more consistent accross
the various schedulers.

This also happens to make ScheduleDAGRRList's CycleBound computation
somewhat more interesting, though it still doesn't have any noticeable
effect, because no current targets that use the register-pressure
reduction scheduler provide pipeline models.

llvm-svn: 59475
 2008-11-18 00:38:59 +00:00
Devang Patel
705f88d5b5 While handling floating point IVs lift restrictions on initial value and increment value. 
llvm-svn: 59471
 2008-11-17 23:27:13 +00:00
Devang Patel
2d0c234523 Handle floating point ivs during doInitialization(). 
llvm-svn: 59466
 2008-11-17 21:32:02 +00:00
Dan Gohman
60b429ea32 Eliminate some trivial differences between the ScheduleNodeTopDown 
functions in these two schedulers.

llvm-svn: 59465
 2008-11-17 21:31:02 +00:00
Duncan Sands
b13af5a714 Add soft float support for a bunch more operations. Original 
patch by Richard Osborne, tweaked and extended by your humble
servant.

llvm-svn: 59464
 2008-11-17 20:52:38 +00:00
Dan Gohman
a8de4a5f1d Don't bother doing latency calculations in the "fast" scheduler. 
llvm-svn: 59461
 2008-11-17 19:52:36 +00:00
Dan Gohman
0791f039c6 Use SUnit's CycleBound field instead of duplicating it in 
a side-car datastructure

llvm-svn: 59458
 2008-11-17 19:45:19 +00:00
Dale Johannesen
f56b6d64f9 Move some former testcases (low-probability codegen 
optimizations) into this wishlist.

llvm-svn: 59455
 2008-11-17 18:56:34 +00:00
Devang Patel
6c2dd85bf3 Let AnalyzeAlloca() remove debug intrinsics. 
llvm-svn: 59454
 2008-11-17 18:37:53 +00:00
Richard Osborne
2eb278eb4d Don't produce ADDC/ADDE when expanding SHL unless they are legal 
for the target. This fixes PR3080.

llvm-svn: 59450
 2008-11-17 17:34:31 +00:00
Dan Gohman
7bc152c693 Don't use the isPending flag to mean what the isAvailable flag means. 
llvm-svn: 59445
 2008-11-17 16:37:30 +00:00
Mon P Wang
c317d44842 Fixed legalization of CONVERT_RNDSAT for integers. 
llvm-svn: 59432
 2008-11-17 00:41:12 +00:00
Torok Edwin
f67e9bb406 If SI->size() is 0, we are not allowed to dereference ->begin(). 
This fixed PR3078.

llvm-svn: 59416
 2008-11-16 17:21:25 +00:00
Lang Hames
d4b67e92df Big PBQP allocator update. Adds coalescing support, stack slot coloring, several bug-fixes. 
llvm-svn: 59414
 2008-11-16 12:12:54 +00:00
Chris Lattner
ba8e67c635 eliminate some std::set's. 
llvm-svn: 59409
 2008-11-16 07:17:51 +00:00
Chris Lattner
d85de82f04 simplify loop 
llvm-svn: 59406
 2008-11-16 06:35:18 +00:00
Chris Lattner
652917424d simplify a bunch more instcombines to use m_Specific etc. 
llvm-svn: 59403
 2008-11-16 05:38:51 +00:00
Chris Lattner
c487057a1e factor the code for simplifying (icmp)|(icmp) into its own function. 
llvm-svn: 59402
 2008-11-16 05:20:07 +00:00
Chris Lattner
6b5b2c3606 do some computation with apints instead of ConstantInts. 
llvm-svn: 59401
 2008-11-16 05:14:43 +00:00
Chris Lattner
f47d16afe3 merge a check into a place where it is simpler. 
llvm-svn: 59400
 2008-11-16 05:10:52 +00:00
Mon P Wang
b6661b480b Improved shuffle normalization to avoid using extract/build when we 
can extract using different indexes for two vectors. Added a few tests
for vector shuffles.

llvm-svn: 59399
 2008-11-16 05:06:27 +00:00
Chris Lattner
3b058783bc factor a whole bunch of code out into a helper function. 
llvm-svn: 59398
 2008-11-16 05:06:21 +00:00
Chris Lattner
f9dd858359 simplify the conditions on two gigantic if's, decreasing indentation 
a bit.  Next step is to factor out into their own helper functions.

llvm-svn: 59397
 2008-11-16 04:55:20 +00:00
Chris Lattner
762c52d684 simplify some instcombine matches by using m_Specific 
llvm-svn: 59395
 2008-11-16 04:46:19 +00:00
Chris Lattner
a5aee38775 Use new m_SelectCst template to eliminate macros. 
llvm-svn: 59392
 2008-11-16 04:33:38 +00:00
Chris Lattner
cba75c1b7b simplify code. 
llvm-svn: 59390
 2008-11-16 04:26:55 +00:00
Chris Lattner
21f18c9760 Handle the case where there is no "not". It is possible it got 
folded into the select.

llvm-svn: 59389
 2008-11-16 04:25:26 +00:00
Chris Lattner
6afddeeed1 factor a bunch of copy/paste code out into a helper function. 
Eliminate the cases checking for cond?0:-1, since that is already
handled by commutative checking.

llvm-svn: 59388
 2008-11-16 04:24:12 +00:00
Nick Lewycky
1cddd8346f Don't brute-force analyze cubic or higher polynomials. 
If this patch causes a performance regression for anyone, please let me know,
and it can be fixed in a different way with much more effort.

llvm-svn: 59384
 2008-11-16 04:14:25 +00:00
Chris Lattner
9dd963a73a rearrange some code, no functionality change. 
llvm-svn: 59381
 2008-11-16 03:56:24 +00:00
Chris Lattner
0c0c68bab4 if we're going to use a macro, use it maximally. no functionality change. 
llvm-svn: 59380
 2008-11-16 03:54:57 +00:00
Oscar Fuentes
42942c0bc5 Adds extern "C" ints to the .cpp files that use RegisterTarget, as 
well as 2 files that use "Registrator"s. These are to be used by the
MSVC builds, as the Win32 linker does not include libs that are
otherwise unreferenced, even if global constructors in the lib have
side-effects.

Patch by Scott Graham!

llvm-svn: 59378
 2008-11-15 21:36:30 +00:00
Nick Lewycky
75d57a3bc3 Correct this error message. 
llvm-svn: 59370
 2008-11-15 17:50:47 +00:00
Duncan Sands
52ce276405 When splitting a SHUFFLE_VECTOR, try to have the result 
use SHUFFLE_VECTOR instead.  If not practical, fall back
to the old scheme of building the split result by hand
using a BUILD_VECTOR.

llvm-svn: 59361
 2008-11-15 09:25:38 +00:00
Mon P Wang
4421962b9b Add missing widen operations, fixed widening for extracting a subvector, 
and when loading/storing a widen vector, make sure that they are loaded
and stored in consecutive order.

llvm-svn: 59357
 2008-11-15 06:05:52 +00:00
Evan Cheng
7ac8120105 Fix fuitos encoding. 
llvm-svn: 59344
 2008-11-15 00:40:57 +00:00
Dan Gohman
95967fc7b7 Correct a comment. 
llvm-svn: 59341
 2008-11-15 00:24:23 +00:00
Dan Gohman
b4151fd731 Move ScheduleDAGList's LatencyPriorityQueue class out to a separate file. 
llvm-svn: 59340
 2008-11-15 00:23:40 +00:00