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Author SHA1 Message Date
Wojciech Matyjewicz
2874a19254 If the LHS of the comparison is a loop-invariant we also want to move it 
to the RHS. This simple change allows to compute loop iteration count 
for loops with condition similar to the one in the testcase (which seems 
to be quite common).

llvm-svn: 46959
 2008-02-11 18:37:34 +00:00
Ted Kremenek
f06b7ac532 Added "Profile" method to APFloat for use with FoldingSet. 
Added member template "Add" to FoldingSetNodeID that allows "adding" arbitrary
objects to a profile via dispatch to FoldingSetTrait<T>::Profile().

Removed FoldingSetNodeID::AddAPFloat and FoldingSetNodeID::APInt, as their
functionality is now replaced using the above mentioned member template.

llvm-svn: 46957
 2008-02-11 17:24:50 +00:00
Duncan Sands
b9bf0dcb7c Add arbitrary integer support to getRegisterType and 
getNumRegisters.  This is needed for calling functions
with apint parameters or return values.

llvm-svn: 46956
 2008-02-11 11:09:23 +00:00
Wojciech Matyjewicz
76c2b22ee4 Fix PR1798 - an error in the evaluation of SCEVAddRecExpr at an 
arbitrary iteration.

The patch:
1) changes SCEVSDivExpr into SCEVUDivExpr,
2) replaces PartialFact() function with BinomialCoefficient(); the 
computations (essentially, the division) in BinomialCoefficient() are 
performed with the apprioprate bitwidth necessary to avoid overflow; 
unsigned division is used instead of the signed one.

Computations in BinomialCoefficient() require support from the code 
generator for APInts. Currently, we use a hack rounding up the 
neccessary bitwidth to the nearest power of 2. The hack is easy to turn 
off in future.

One remaining issue: we assume the divisor of the binomial coefficient 
formula can be computed accurately using 16 bits. It means we can handle 
AddRecs of length up to 9. In future, we should use APInts to evaluate 
the divisor.

Thanks to Nicholas for cooperation!

llvm-svn: 46955
 2008-02-11 11:03:14 +00:00
Duncan Sands
204c89cafa Add a isBigEndian method to complement isLittleEndian. 
llvm-svn: 46954
 2008-02-11 10:37:04 +00:00
Evan Cheng
19f684ed72 Determine whether a spill kills the register it's spilling before insertion rather than trying to undo the kill marker afterwards. 
llvm-svn: 46953
 2008-02-11 08:30:52 +00:00
Chris Lattner
3db3d4a614 tweaks from dale. 
llvm-svn: 46952
 2008-02-11 07:27:21 +00:00
Chris Lattner
d2465e32c8 updates from Evan 
llvm-svn: 46951
 2008-02-11 07:21:08 +00:00
Nate Begeman
5a4e290b70 Enable SSE4 codegen and pattern matching. 
Add some notes to the README.

llvm-svn: 46949
 2008-02-11 04:19:36 +00:00
Nate Begeman
9e8b2ffd52 additional missing feature 
llvm-svn: 46948
 2008-02-11 04:16:09 +00:00
Gabor Greif
8165a93e7a corrected some spellings 
maybe c380004 can be hyperlinked too?

llvm-svn: 46934
 2008-02-10 20:08:16 +00:00
Chris Lattner
85c2d36cfe Various updates from Sam Bishop: 
"I have been working my way through the JIT and Kaleidoscope tutorials in my
(minuscule) spare time.  Thanks again for writing them!  I have attached a
patch containing some minor changes, ranging from spelling and grammar fixes
to adding a "Next: <next tutorial section>" hyperlink to the bottom of each
page.

Every page has been given the "next link" treatment, but otherwise I'm only
half way through the Kaleidoscope tutorial.  I will send a follow-on patch
if time permits."

llvm-svn: 46933
 2008-02-10 19:11:04 +00:00
Chris Lattner
068321707d Fix scalarrepl to not 'miscompile' undefined code, part #2. 
This fixes the store case, my previous patch just fixed the load
case.  rdar://5707076.

llvm-svn: 46932
 2008-02-10 19:05:37 +00:00
Nate Begeman
297d683980 xmm0 variable blends 
llvm-svn: 46931
 2008-02-10 18:47:57 +00:00
Dan Gohman
cabaec582f Rename MRegisterInfo to TargetRegisterInfo. 
llvm-svn: 46930
 2008-02-10 18:45:23 +00:00
Chris Lattner
40b5c6c1bc close an li tag 
llvm-svn: 46929
 2008-02-10 17:52:05 +00:00
Duncan Sands
022743c2af Add some Ada info and correct a few buglets. 
llvm-svn: 46928
 2008-02-10 13:40:55 +00:00
Duncan Sands
2c2b2822d3 Add truncate and AssertZext result expansion. 
llvm-svn: 46926
 2008-02-10 10:08:52 +00:00
Chris Lattner
051f089b21 remove the in progress marker. 
llvm-svn: 46925
 2008-02-10 08:19:35 +00:00
Chris Lattner
5afdb9598d validation fixes 
llvm-svn: 46924
 2008-02-10 08:18:42 +00:00
Chris Lattner
1eefe978e3 final set of major updates 
llvm-svn: 46923
 2008-02-10 08:17:19 +00:00
Bill Wendling
20621788d4 Return "(c1 + c2)" instead of yet another ADD node (which made this a 
no-op).

llvm-svn: 46922
 2008-02-10 08:10:24 +00:00
Chris Lattner
81b4bcbd89 more prose, some organization improvements. 
llvm-svn: 46921
 2008-02-10 07:46:44 +00:00
Chris Lattner
f11f7981bc random notes 
llvm-svn: 46920
 2008-02-10 07:04:35 +00:00
Chris Lattner
bc59a2704b add anote 
llvm-svn: 46918
 2008-02-10 01:01:35 +00:00
Nick Lewycky
b072c0b3ed Match GCC's behaviour for these sections. 
llvm-svn: 46916
 2008-02-10 00:03:54 +00:00
Nate Begeman
2627ffd14b memopv16i8 had wrong alignment requirement, would have broken pabsb 
pabs{b,w,d} are not two address
fix extract-to-mem sse4 ops
add sse4 vector sign extend nodes

llvm-svn: 46915
 2008-02-09 23:46:37 +00:00
Chris Lattner
c58cabb0bd add some more notes, still not ready for review :) 
llvm-svn: 46914
 2008-02-09 22:58:07 +00:00
Chris Lattner
b9f862e239 scoped_ptr.h was removed. 
llvm-svn: 46913
 2008-02-09 22:50:06 +00:00
Gabor Greif
3453f29f65 explain that NumElements in alloca and malloc defaults to one 
llvm-svn: 46912
 2008-02-09 22:24:34 +00:00
Dale Johannesen
304406f01c Alignment of struct containing vectors depends on 
whether SSE is present, on Darwin anyway.  Make it
explicit.

llvm-svn: 46909
 2008-02-09 19:04:25 +00:00
Wojciech Matyjewicz
8095000596 We should check that existing cast operation has the appropriate opcode before we reuse it. 
llvm-svn: 46908
 2008-02-09 18:30:13 +00:00
Wojciech Matyjewicz
2e45476439 Add a check if the initial value of the induction variable is 0 (the method comment says it should be). 
llvm-svn: 46907
 2008-02-09 18:06:58 +00:00
Evan Cheng
869b54e60c Remove unused hidden option. 
llvm-svn: 46903
 2008-02-09 08:36:28 +00:00
Nate Begeman
a78c35a368 Skeleton of insert and extract matching, more to come 
llvm-svn: 46902
 2008-02-09 01:38:08 +00:00
Nate Begeman
336fba2146 Tablegen support for insert & extract element matching 
llvm-svn: 46901
 2008-02-09 01:37:05 +00:00
Chris Lattner
22696c10f0 check that terminators only occur at the end of a block. This catches the 
common problem of putting two terminators in the same block.  I can't write
a testcase for this because the .ll parser rejects this before the verifier
can, but this can occur when generating IR.

llvm-svn: 46900
 2008-02-09 01:06:01 +00:00
Dan Gohman
672d341167 Change ConstantSDNode to store an APInt instead of a uint64_t, and 
begin adding some methods to use it this way.

llvm-svn: 46899
 2008-02-08 22:59:30 +00:00
Devang Patel
9aba178666 Fix PR 1995. 
llvm-svn: 46898
 2008-02-08 22:49:13 +00:00
Evan Cheng
83066786b0 Forgot these files. 
llvm-svn: 46896
 2008-02-08 22:05:27 +00:00
Evan Cheng
2d3d000878 Also print alignment. 
llvm-svn: 46895
 2008-02-08 22:05:07 +00:00
Dan Gohman
3d296e049c Add an isSignedIntN, like isIntN but for signed integer values instead of 
unsigned.

llvm-svn: 46894
 2008-02-08 21:58:15 +00:00
Evan Cheng
90f03a0b88 It's not always safe to fold movsd into xorpd, etc. Check the alignment of the load address first to make sure it's 16 byte aligned. 
llvm-svn: 46893
 2008-02-08 21:20:40 +00:00
Dale Johannesen
9bbfeaea4d 64-bit (MMX) vectors do not need restrictive alignment. 
128-bit vectors need it only when SSE is on.

llvm-svn: 46890
 2008-02-08 19:48:20 +00:00
Ted Kremenek
557bbab669 Constified operator<< in APSInt. 
llvm-svn: 46882
 2008-02-08 07:14:19 +00:00
Dan Gohman
d1cc100aef Avoid needlessly casting away const qualifiers. 
llvm-svn: 46877
 2008-02-08 03:29:40 +00:00
Dan Gohman
1f255f2db7 Avoid needlessly casting away const qualifiers. 
llvm-svn: 46876
 2008-02-08 03:26:46 +00:00
Evan Cheng
b2bc19ee5b Added missing entries in X86 load / store folding tables. 
llvm-svn: 46866
 2008-02-08 00:12:56 +00:00
Devang Patel
1e5c60dee9 Begin setting features for target based on target triple string. 
llvm-svn: 46863
 2008-02-07 22:32:50 +00:00
Evan Cheng
0c6aedd740 Remove remnant of load folding in local register allocator. Patch by Holger Schurig. 
llvm-svn: 46861
 2008-02-07 19:46:55 +00:00