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Author SHA1 Message Date
Chris Lattner
ea1cddf546 the mid-level optimizer removes this stuff. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47108 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-14 05:43:18 +00:00
Chris Lattner
48b4d96949 this one is easy. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47107 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-14 05:41:38 +00:00
Chris Lattner
8b0cb7bcc6 This readme entry is done, testcase here: CodeGen/X86/zero-remat.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47106 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-14 05:39:46 +00:00
Dan Gohman
d9fe41c0c8 Allow the APInt form of ComputeMaskedBits to operate on i128 types. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47101 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-13 23:13:32 +00:00
Dan Gohman
f4f92f5ebe Assigning an APInt to 0 with plain assignment gives it a one-bit 
size. Initialize these APInts to properly-sized zero values.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47099 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-13 23:07:24 +00:00
Dan Gohman
72d2fd57b6 Avoid setting bits that aren't demanded. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47098 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-13 22:43:25 +00:00
Dan Gohman
977a76fbb6 Simplify some logic in ComputeMaskedBits. And change ComputeMaskedBits 
to pass the mask APInt by value, not by reference. 


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47096 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-13 22:28:48 +00:00
Devang Patel
ea06906559 A loop latch phi node may have uses inside loop, not just in loop header. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47093 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-13 22:23:07 +00:00
Dan Gohman
7649127ec1 Rename APInt's isPositive to isNonNegative, to reflect what it 
actually does.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47090 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-13 22:09:18 +00:00
Devang Patel
23067dfeac While moving exit condition, do not drop loop latch on the floor. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47089 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-13 22:06:36 +00:00
Dan Gohman
42dd77f207 Add countTrailingOnes member functions to APInt. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47086 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-13 21:11:05 +00:00
Devang Patel
02c4836f3d Keep track of exit value operand number when operands are swapped. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47082 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-13 19:48:48 +00:00
Nicolas Geoffray
afe6c2b001 Enable exception handling int JIT 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47079 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-13 18:39:37 +00:00
Duncan Sands
d462ba8539 Teach LegalizeTypes how to expand and promote CTLZ, 
CTTZ and CTPOP.  The expansion code differs from
that in LegalizeDAG in that it chooses to take the
CTLZ/CTTZ count from the Hi/Lo part depending on
whether the Hi/Lo value is zero, not on whether
CTLZ/CTTZ of Hi/Lo returned 32 (or whatever the
width of the type is) for it.  I made this change
because the optimizers may well know that Hi/Lo
is zero and exploit it.  The promotion code for
CTTZ also differs from that in LegalizeDAG: it
uses an "or" to get the right result when the
original value is zero, rather than using a compare
and select.  This also means the value doesn't
need to be zero extended.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47075 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-13 18:01:53 +00:00
Chris Lattner
a1998d1cba Fix the PPC JIT regressions by encoding zeroreg as 0 for BLR. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47067 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-13 17:24:14 +00:00
Chris Lattner
eedcf3fc46 remove some dead code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47066 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-13 17:18:26 +00:00
Devang Patel
e45252efee Remove use of ltdl 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47065 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-13 17:11:39 +00:00
Wojciech Matyjewicz
a65ee03bb2 Fix typo. Thanks to Duncan for noticing. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47062 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-13 12:21:32 +00:00
Wojciech Matyjewicz
3a4cbe2a41 Add comments as per review feedback. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47061 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-13 11:51:34 +00:00
Evan Cheng
cdbcfccece Some code clean up. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47060 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-13 09:56:03 +00:00
Evan Cheng
9cec00e7f1 Simplify. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47058 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-13 09:13:21 +00:00
Evan Cheng
e984e504b5 Fix a potential serious problem where kills belonging to the val# defined by a two-address instruction is also on the val# that defines the input. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47057 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-13 09:06:18 +00:00
Evan Cheng
e35a6d1dfb * Cannot safely commute an instruction there are other defs which can reach its uses. 
* Ignore copy instructions which have already been coalesced.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47056 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-13 08:41:08 +00:00
Chris Lattner
86ca3cacc5 In SDISel, for targets that support FORMAL_ARGUMENTS nodes, lower this 
node as soon as we create it in SDISel.  Previously we would lower it in
legalize.  The problem with this is that it only exposes the argument
loads implied by FORMAL_ARGUMENTs after legalize, so that only dag combine 2
can hack on them.  This causes us to miss some optimizations because 
datatype expansion also happens here.

Exposing the loads early allows us to do optimizations on them.  For example
we now compile arg-cast.ll to:

_foo:
	movl	$2147483647, %eax
	andl	8(%esp), %eax
	ret

where we previously produced:

_foo:
	subl	$12, %esp
	movsd	16(%esp), %xmm0
	movsd	%xmm0, (%esp)
	movl	$2147483647, %eax
	andl	4(%esp), %eax
	addl	$12, %esp
	ret

It might also make sense to do this for ISD::CALL nodes, which have implicit
stores on many targets.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47054 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-13 07:39:09 +00:00
Chris Lattner
9f72d1a730 don't try to avoid inserting loads when lowering FORMAL_ARGUMENTS. 
DAGCombine is now quite good at zapifying them.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47053 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-13 07:35:30 +00:00
Chris Lattner
fec42eb6da teach dag combiner how to eliminate MERGE_VALUES nodes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47052 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-13 07:25:05 +00:00
Nate Begeman
b5041b3085 readme updates 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47051 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-13 07:06:12 +00:00
Nate Begeman
0325d90348 Support legalizing insert_vector_elt on targets where the element 
type is not legal.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47048 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-13 06:43:04 +00:00
Evan Cheng
70071434ae Initial support for copy elimination by commuting its definition MI. 
PR1877.
A3 = op A2 B0<kill>                                                                                                                                                                            
...                                                                                                                                                                                     
B1 = A3      <- this copy                                                                                                                                                                      
...                                                                                                                                                                                          
   = op A3   <- more uses                                                                                                                                                                      
                                                                                                                                                                                                 
==>                                                                                                                                                                                             
                                                                                                                                                                                            
B2 = op B0 A2<kill>                                                                                                                                                                            
...                                                                                                                                                                                          
B1 = B2      <- now an identify copy                                                                                                                                                           
...                                                                                                                                                                                          
   = op B2   <- more uses

This speeds up FreeBench/neural by 29%, Olden/bh by 12%, oopack_v1p8 by 53%.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47046 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-13 03:01:43 +00:00
Nate Begeman
ba8d51c1d7 Make register scavenging happy by not using a reg (CR0) that isn't defined 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47045 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-13 02:58:33 +00:00
Evan Cheng
d2b8d7bc51 - Added removeValNo() to remove all live ranges of a particular value#. 
- removeRange() can now update value# information.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47044 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-13 02:48:26 +00:00
Evan Cheng
a4d16a1f0d commuteInstr() can now commute non-ssa machine instrs. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47043 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-13 02:46:49 +00:00
Evan Cheng
1eb5cf9c7d Added debugging routine dumpUses. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47042 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-13 02:45:38 +00:00
Dan Gohman
fd29e0eb06 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47039 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-13 00:35:47 +00:00
Dale Johannesen
3006c39e3a __DATA not __DATA__ is the right segment name on darwin. 
Spotted by Nick Kledzik.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47037 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-12 23:35:09 +00:00
Nate Begeman
bf1caa9854 Remove some dead code 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47036 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-12 22:54:40 +00:00
Nate Begeman
cdd1eeca2c SSE4.1 64b integer insert/extract pattern support 
Move formats into the formats file


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47035 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-12 22:51:28 +00:00
Owen Anderson
30b4bd4d10 Re-apply the patch to improve the optimizations of memcpy's, with several 
bugs fixed.  This now passes PPC bootstrap.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47026 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-12 21:15:18 +00:00
Duncan Sands
014e04a5da 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47024 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-12 20:46:31 +00:00
Evan Cheng
394d28048c Revert r46916 PPCTargetAsmInfo.cpp. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47020 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-12 19:25:12 +00:00
Evan Cheng
9f143ce989 Only using x86-64 rip relative addressing in non-staic mode? 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47019 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-12 19:20:46 +00:00
Wojciech Matyjewicz
7b5b76835a 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47007 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-12 15:09:36 +00:00
Eli Friedman
b6c36e4058 Fix for bug 1996: optimize out loads of undef. This code basically just 
checks for a malloc/alloca immediately followed by a load.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47006 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-12 12:08:14 +00:00
Evan Cheng
add251754c Update comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47002 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-12 07:59:55 +00:00
Evan Cheng
5ae45caf79 Unbreak various insert_vector_elt and extract_vector_elt tests in presence of SSE4. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47001 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-12 07:59:45 +00:00
Nate Begeman
5bb013c34a Stuff noticed while grepping code 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46979 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-11 23:47:56 +00:00
Duncan Sands
b988baccc2 Generalize the handling of call and return arguments, 
in preparation for apint support.  These changes are
intended to have no functional effect.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46967 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-11 20:58:28 +00:00
Dan Gohman
cc20cd59e6 From Chris' review: use isa instead of explicitly using classof. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46964 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-11 19:00:34 +00:00
Dan Gohman
027ee7e3ca From Chris' review: minor corrections in comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46963 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-11 19:00:03 +00:00
Dan Gohman
bbbbb9c3dd From Chris' review: use cast instead of dyn_cast with an assert. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46962 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-11 18:58:42 +00:00
Dan Gohman
debeeba6ec From Chris' review: fix 80 column violations 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46961 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-11 18:57:43 +00:00
Wojciech Matyjewicz
a089b10421 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).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46959 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-11 18:37:34 +00:00
Ted Kremenek
1f801fa5ad 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46957 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-11 17:24:50 +00:00
Wojciech Matyjewicz
e3320a1bcc 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!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46955 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-11 11:03:14 +00:00
Duncan Sands
0753fc1850 Add a isBigEndian method to complement isLittleEndian. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46954 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-11 10:37:04 +00:00
Evan Cheng
431bfcbe37 Determine whether a spill kills the register it's spilling before insertion rather than trying to undo the kill marker afterwards. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46953 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-11 08:30:52 +00:00
Nate Begeman
14d12caf1d Enable SSE4 codegen and pattern matching. 
Add some notes to the README.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46949 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-11 04:19:36 +00:00
Nate Begeman
a6ed0aa8ec additional missing feature 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46948 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-11 04:16:09 +00:00
Chris Lattner
916c954bf2 Fix scalarrepl to not 'miscompile' undefined code, part #2. 
This fixes the store case, my previous patch just fixed the load
case.  rdar://5707076.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46932 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-10 19:05:37 +00:00
Nate Begeman
ab5d56c6b9 xmm0 variable blends 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46931 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-10 18:47:57 +00:00
Dan Gohman
6f0d024a53 Rename MRegisterInfo to TargetRegisterInfo. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46930 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-10 18:45:23 +00:00
Duncan Sands
d885dbdf9e Add truncate and AssertZext result expansion. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46926 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-10 10:08:52 +00:00
Bill Wendling
91b9ad1824 Return "(c1 + c2)" instead of yet another ADD node (which made this a 
no-op).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46922 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-10 08:10:24 +00:00
Chris Lattner
be036a94c3 add anote 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46918 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-10 01:01:35 +00:00
Nick Lewycky
16b0bd6c83 Match GCC's behaviour for these sections. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46916 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-10 00:03:54 +00:00
Nate Begeman
fea2be50b9 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


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46915 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-09 23:46:37 +00:00
Wojciech Matyjewicz
3913187bf6 We should check that existing cast operation has the appropriate opcode before we reuse it. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46908 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-09 18:30:13 +00:00
Evan Cheng
63a18c491a Remove unused hidden option. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46903 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-09 08:36:28 +00:00
Nate Begeman
1426d52cab Skeleton of insert and extract matching, more to come 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46902 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-09 01:38:08 +00:00
Nate Begeman
b5af3344c1 Tablegen support for insert & extract element matching 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46901 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-09 01:37:05 +00:00
Chris Lattner
9071dd3a57 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46900 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-09 01:06:01 +00:00
Dan Gohman
6394b099e8 Change ConstantSDNode to store an APInt instead of a uint64_t, and 
begin adding some methods to use it this way.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46899 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-08 22:59:30 +00:00
Devang Patel
82ada54da0 Fix PR 1995. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46898 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-08 22:49:13 +00:00
Evan Cheng
f2f8c2ae07 Forgot these files. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46896 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-08 22:05:27 +00:00
Evan Cheng
bbd8322daa Also print alignment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46895 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-08 22:05:07 +00:00
Evan Cheng
5fd79d0560 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. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46893 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-08 21:20:40 +00:00
Dale Johannesen
0c191872ab 64-bit (MMX) vectors do not need restrictive alignment. 
128-bit vectors need it only when SSE is on.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46890 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-08 19:48:20 +00:00
Dan Gohman
60783304f6 Avoid needlessly casting away const qualifiers. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46877 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-08 03:29:40 +00:00
Dan Gohman
547ca537b6 Avoid needlessly casting away const qualifiers. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46876 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-08 03:26:46 +00:00
Evan Cheng
33663fc104 Added missing entries in X86 load / store folding tables. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46866 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-08 00:12:56 +00:00
Evan Cheng
27240c7d50 Remove remnant of load folding in local register allocator. Patch by Holger Schurig. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46861 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-07 19:46:55 +00:00
Dan Gohman
3069b87437 Follow Chris' suggestion; change the PseudoSourceValue accessors 
to return pointers instead of references, since this is always what
is needed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46857 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-07 18:41:25 +00:00
Dan Gohman
4fdad172de Add SourceValue information for outgoing argument stores on x86. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46854 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-07 16:28:05 +00:00
Dan Gohman
2bfe6ff605 Don't abort if a MemOperand is missing a SourceValue; just print it 
as <unknown>. And make some minor adjustments to the MemOperand
dump format.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46853 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-07 16:18:00 +00:00
Evan Cheng
be3bf42331 Fix a x86-64 codegen deficiency. Allow gv + offset when using rip addressing mode. 
Before:
_main:
        subq    $8, %rsp
        leaq    _X(%rip), %rax
        movsd   8(%rax), %xmm1
        movss   _X(%rip), %xmm0
        call    _t
        xorl    %ecx, %ecx
        movl    %ecx, %eax
        addq    $8, %rsp
        ret
Now:
_main:
        subq    $8, %rsp
        movsd   _X+8(%rip), %xmm1
        movss   _X(%rip), %xmm0
        call    _t
        xorl    %ecx, %ecx
        movl    %ecx, %eax
        addq    $8, %rsp
        ret

Notice there is another idiotic codegen issue that needs to be fixed asap:
xorl    %ecx, %ecx
movl    %ecx, %eax


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46850 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-07 08:53:49 +00:00
Evan Cheng
15246738f2 In some cases, e.g. ADD32ri, no transformation is made. Guide against it. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46849 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-07 08:29:53 +00:00
Nick Lewycky
33d4f7792f Don't make up new directives. (".set_foobar") 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46848 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-07 06:36:26 +00:00
Dan Gohman
b3f5cfc670 Fix a typo in a comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46836 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-07 02:30:40 +00:00
Dan Gohman
167b8bc24d Add support to FoldingSet for hashing APInt objects. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46833 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-06 23:09:15 +00:00
Dan Gohman
69de1932b3 Re-apply the memory operand changes, with a fix for the static 
initializer problem, a minor tweak to the way the
DAGISelEmitter finds load/store nodes, and a renaming of the
new PseudoSourceValue objects.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46827 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-06 22:27:42 +00:00
Bill Wendling
e00fec554b Temporarily reverting: 
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20080128/057882.html

This is causing a miscompilation on PPC G5 and just now seeing it on iMac x86-64.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46822 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-06 20:03:07 +00:00
Evan Cheng
2fc628d662 Fix a number of local register allocator issues: PR1609. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46821 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-06 19:16:53 +00:00
Evan Cheng
22ff3eeebe RegAllocaLocal still *requires* LiveVariables since it runs PHIElimination, followed by TwoAddress which requires LiveVariables. We cannot run LiveVariables on non-SSA code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46813 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-06 08:00:32 +00:00
Tanya Lattner
63aa160b27 Throttle the non-local dependence analysis for basic blocks with more than 50 predecessors. Added command line option to play with this threshold. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46790 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-06 00:54:55 +00:00
Evan Cheng
a58891ff1e Fix PR1975: dag isel emitter produces patterns that isel wrong flag result. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46776 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-05 22:50:29 +00:00
Evan Cheng
ebaaa91094 Move to getCALLSEQ_END to ensure CALLSEQ_END node produces a flag. This is consistent with the definition in td file. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46775 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-05 22:44:06 +00:00
Chris Lattner
2663ffe751 Make RenamePass faster by making the 'is this a new phi node' 
check more intelligent.  This speeds up mem2reg from 5.29s to 
0.79s on a synthetic testcase with tons of predecessors and
phi nodes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46767 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-05 21:26:23 +00:00
Dale Johannesen
e672af15d6 Implement sseregparm. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46764 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-05 20:46:33 +00:00
Evan Cheng
bb4151bd1f If a vr is already marked alive in a bb, then it has PHI uses that are visited earlier, then it is not killed in the def block (i.e. not dead). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46763 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-05 20:04:18 +00:00
Nate Begeman
5a804e3e21 Ident mnemonics appropriately 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46746 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-05 08:49:09 +00:00