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a089b10421
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21686 Commits

Author SHA1 Message Date
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
Chris Lattner
7c95debb49 Fix a bug compiling PR1978 (perhaps not the only one though) which 
was incorrectly simplifying "x == (gep x, 1, i)" into false, even 
though i could be negative.  As it turns out, all the code to 
handle this already existed, we just need to disable the incorrect
optimization case and let the general case handle it.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46739 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-05 04:45:32 +00:00