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09023887f8
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21617 Commits

Author SHA1 Message Date
Dan Gohman
09023887f8 Convert SelectionDAG::ComputeMaskedBits to use APInt instead of uint64_t. 
Add an overload that supports the uint64_t interface for use by clients
that haven't been updated yet.

llvm-svn: 47039
 2008-02-13 00:35:47 +00:00
Dale Johannesen
4621e574c9 __DATA not __DATA__ is the right segment name on darwin. 
Spotted by Nick Kledzik.

llvm-svn: 47037
 2008-02-12 23:35:09 +00:00
Nate Begeman
589ecad41d Remove some dead code 
llvm-svn: 47036
 2008-02-12 22:54:40 +00:00
Nate Begeman
810b85bde8 SSE4.1 64b integer insert/extract pattern support 
Move formats into the formats file

llvm-svn: 47035
 2008-02-12 22:51:28 +00:00
Owen Anderson
274aa2846e Re-apply the patch to improve the optimizations of memcpy's, with several 
bugs fixed.  This now passes PPC bootstrap.

llvm-svn: 47026
 2008-02-12 21:15:18 +00:00
Duncan Sands
1122ee4ded Generalize getCopyFromParts and getCopyToParts to 
handle arbitrary precision integers and any number
of parts.  For example, on a 32 bit machine an i50
corresponds to two i32 parts.  getCopyToParts will
extend the i50 to an i64 then write half of the i64
to each part; getCopyFromParts will combine the two
i32 parts into an i64 then truncate the result to
i50.

llvm-svn: 47024
 2008-02-12 20:46:31 +00:00
Evan Cheng
b05b05aba5 Revert r46916 PPCTargetAsmInfo.cpp. 
llvm-svn: 47020
 2008-02-12 19:25:12 +00:00
Evan Cheng
e3ddcfa588 Only using x86-64 rip relative addressing in non-staic mode? 
llvm-svn: 47019
 2008-02-12 19:20:46 +00:00
Wojciech Matyjewicz
b6e6dacc60 Fix PR2002. Suppose n is the initial value for the induction 
variable (with step 1) and m is its final value. Then, the correct trip 
count is SMAX(m,n)-n. Previously, we used SMAX(0,m-n), but m-n may 
overflow and can't in general be interpreted as signed.

Patch by Nick Lewycky.

llvm-svn: 47007
 2008-02-12 15:09:36 +00:00
Eli Friedman
69268a529e Fix for bug 1996: optimize out loads of undef. This code basically just 
checks for a malloc/alloca immediately followed by a load.

llvm-svn: 47006
 2008-02-12 12:08:14 +00:00
Evan Cheng
c3875c88a7 Update comment. 
llvm-svn: 47002
 2008-02-12 07:59:55 +00:00
Evan Cheng
075ce702eb Unbreak various insert_vector_elt and extract_vector_elt tests in presence of SSE4. 
llvm-svn: 47001
 2008-02-12 07:59:45 +00:00
Nate Begeman
5c59b16468 Stuff noticed while grepping code 
llvm-svn: 46979
 2008-02-11 23:47:56 +00:00
Duncan Sands
7916fcbe27 Generalize the handling of call and return arguments, 
in preparation for apint support.  These changes are
intended to have no functional effect.

llvm-svn: 46967
 2008-02-11 20:58:28 +00:00
Dan Gohman
243661fb31 From Chris' review: use isa instead of explicitly using classof. 
llvm-svn: 46964
 2008-02-11 19:00:34 +00:00
Dan Gohman
48e7261cca From Chris' review: minor corrections in comments. 
llvm-svn: 46963
 2008-02-11 19:00:03 +00:00
Dan Gohman
d8e6231471 From Chris' review: use cast instead of dyn_cast with an assert. 
llvm-svn: 46962
 2008-02-11 18:58:42 +00:00
Dan Gohman
945903a002 From Chris' review: fix 80 column violations 
llvm-svn: 46961
 2008-02-11 18:57:43 +00:00
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
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
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
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
Duncan Sands
2c2b2822d3 Add truncate and AssertZext result expansion. 
llvm-svn: 46926
 2008-02-10 10:08:52 +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
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
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
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
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
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
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
Dan Gohman
eb7c8e4f6b Follow Chris' suggestion; change the PseudoSourceValue accessors 
to return pointers instead of references, since this is always what
is needed.

llvm-svn: 46857
 2008-02-07 18:41:25 +00:00
Dan Gohman
3af6eba3dd Add SourceValue information for outgoing argument stores on x86. 
llvm-svn: 46854
 2008-02-07 16:28:05 +00:00