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21571 Commits

Author SHA1 Message Date
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
Dan Gohman
ebca101f50 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.

llvm-svn: 46853
 2008-02-07 16:18:00 +00:00
Evan Cheng
a377b2bbd1 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

llvm-svn: 46850
 2008-02-07 08:53:49 +00:00
Evan Cheng
92635b3d94 In some cases, e.g. ADD32ri, no transformation is made. Guide against it. 
llvm-svn: 46849
 2008-02-07 08:29:53 +00:00
Nick Lewycky
b0f0e69df2 Don't make up new directives. (".set_foobar") 
llvm-svn: 46848
 2008-02-07 06:36:26 +00:00
Dan Gohman
b4aa0b2a15 Fix a typo in a comment. 
llvm-svn: 46836
 2008-02-07 02:30:40 +00:00
Dan Gohman
011075cfdb Add support to FoldingSet for hashing APInt objects. 
llvm-svn: 46833
 2008-02-06 23:09:15 +00:00
Dan Gohman
f00842e086 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.

llvm-svn: 46827
 2008-02-06 22:27:42 +00:00
Bill Wendling
8a28ab4b1f 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.

llvm-svn: 46822
 2008-02-06 20:03:07 +00:00
Evan Cheng
2091d9a2e8 Fix a number of local register allocator issues: PR1609. 
llvm-svn: 46821
 2008-02-06 19:16:53 +00:00
Evan Cheng
34815d69b2 RegAllocaLocal still *requires* LiveVariables since it runs PHIElimination, followed by TwoAddress which requires LiveVariables. We cannot run LiveVariables on non-SSA code. 
llvm-svn: 46813
 2008-02-06 08:00:32 +00:00
Tanya Lattner
1234229bc7 Throttle the non-local dependence analysis for basic blocks with more than 50 predecessors. Added command line option to play with this threshold. 
llvm-svn: 46790
 2008-02-06 00:54:55 +00:00
Evan Cheng
851d353eb8 Fix PR1975: dag isel emitter produces patterns that isel wrong flag result. 
llvm-svn: 46776
 2008-02-05 22:50:29 +00:00
Evan Cheng
e509232483 Move to getCALLSEQ_END to ensure CALLSEQ_END node produces a flag. This is consistent with the definition in td file. 
llvm-svn: 46775
 2008-02-05 22:44:06 +00:00
Chris Lattner
5c9fc804d7 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.

llvm-svn: 46767
 2008-02-05 21:26:23 +00:00
Dale Johannesen
e8fa3130f8 Implement sseregparm. 
llvm-svn: 46764
 2008-02-05 20:46:33 +00:00
Evan Cheng
69d5e0fc0f 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). 
llvm-svn: 46763
 2008-02-05 20:04:18 +00:00
Nate Begeman
9f4245c16a Ident mnemonics appropriately 
llvm-svn: 46746
 2008-02-05 08:49:09 +00:00
Chris Lattner
96deed5d4d 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.

llvm-svn: 46739
 2008-02-05 04:45:32 +00:00
Owen Anderson
28d90a4a6a Fix an obscure read-after-free bug that Duncan found. 
llvm-svn: 46738
 2008-02-05 04:34:03 +00:00
Evan Cheng
352062f5f7 Typo. 
llvm-svn: 46725
 2008-02-04 23:10:38 +00:00
Evan Cheng
1c67dcaae7 Dwarf requires variable entries to be in the source order. Right now, since we are recording variable information at isel time this means parameters would appear in the reverse order. The short term fix is to issue recordVariable() at asm printing time instead. 
llvm-svn: 46724
 2008-02-04 23:06:48 +00:00
Nate Begeman
2b00217d58 This method should be virtual 
llvm-svn: 46723
 2008-02-04 23:04:24 +00:00
Nate Begeman
8285430ed7 Eliminate some redundant code. 
llvm-svn: 46720
 2008-02-04 21:44:06 +00:00
Ted Kremenek
6dab41ed32 Added "bucket_iterators" to FoldingSet. Bucket iterators allow iteration 
over all the nodes in a particular bucket.

llvm-svn: 46716
 2008-02-04 21:11:17 +00:00
Devang Patel
ab8c21f3a1 Set error message. 
Patch by Shantonu Sen.

llvm-svn: 46715
 2008-02-04 20:57:54 +00:00
Ted Kremenek
c84b3400b2 Fixed 80 col. violation. 
llvm-svn: 46709
 2008-02-04 17:14:20 +00:00
Duncan Sands
2ba7682d9e I don't see how NodeUpdated can be called with a 
ReadyToProcess node - add an assertion to check
this.  Add an assertion to NodeDeleted that checks
that processed/ready nodes are indeed not deleted.
It is because they are never deleted that none of
the maps can have a deleted node as the source of
a mapping.  It does however seem to be possible in
theory to have a deleted value as the target of a
mapping, however this has not yet been spotted in
the wild.  Still mulling on what to do about this.
[The theoretical situation is this: a node A is
expanded/promoted/whatever to a newly created node
B.  Thus A->B is added to a map.  When the subtree
rooted at B is legalized it is conceivable that B
is deleted due to RAUW on a node somewhere above
it].

llvm-svn: 46705
 2008-02-04 09:29:17 +00:00
Nate Begeman
16830a34c4 The rest of the SSE4.1 intrinsic patterns that are obvious to me. Getting 
Evan's help with the rest.

llvm-svn: 46697
 2008-02-04 06:00:24 +00:00
Nate Begeman
ee7503810f Some more SSE 4.1 intrinsic patterns. 
llvm-svn: 46696
 2008-02-04 05:34:34 +00:00
Owen Anderson
af0449f9e0 Be more precise when eliminating pointers bue to memcpy's. This allows more 
stores to be deleted in some cases.

llvm-svn: 46694
 2008-02-04 04:53:00 +00:00
Owen Anderson
aaba6f96da Allow GVN to hack on memcpy's, making them open to further optimization. 
llvm-svn: 46693
 2008-02-04 02:59:58 +00:00
Nick Lewycky
febd3642ce There are some cases where icmp(add) can be folded into a new icmp. Handle them. 
llvm-svn: 46687
 2008-02-03 16:33:09 +00:00
Nick Lewycky
29cd604126 Hack on vectors too. 
llvm-svn: 46684
 2008-02-03 08:19:11 +00:00
Nick Lewycky
ce4c4698d7 Fold away one multiply in instcombine. This would normally be caught in 
reassociate anyways, but they could be generated during instcombine's run.

llvm-svn: 46683
 2008-02-03 07:42:09 +00:00
Chris Lattner
391e0937e7 Fix typo 
llvm-svn: 46682
 2008-02-03 07:30:27 +00:00
Nate Begeman
ead8dfeef2 SSE 4.1 Intrinsics and detection 
llvm-svn: 46681
 2008-02-03 07:18:54 +00:00
Chris Lattner
57478e6318 handle the case where a node can become ready to process 
multiple times due to a RAUW.

llvm-svn: 46680
 2008-02-03 07:13:32 +00:00
Chris Lattner
6c9f8f2d91 Use the new infrastructure for listening to node updates to 
keep the LegalizeTypes node flags up to date when doing a RAUW.
This fixes a nasty bug that Duncan ran into and makes the 
previous (nonbuggy case) more efficent.

llvm-svn: 46679
 2008-02-03 07:08:51 +00:00
Chris Lattner
ce1bde2760 the world doesn't need my debugging code. 
llvm-svn: 46678
 2008-02-03 07:01:05 +00:00
Chris Lattner
6ea106139d Change the 'global modification' APIs in SelectionDAG to take a new 
DAGUpdateListener object pointer instead of just returning a vector 
of deleted nodes.  This makes the interfaces more efficient (no more
allocating a vector [at least a malloc], filling it in, then walking
it) and more clean.  This also allows the client to be notified of
nodes that are *changed* but not deleted.

llvm-svn: 46677
 2008-02-03 06:49:24 +00:00
Chris Lattner
e926ece00b explicitly include Compiler.h instead of getting it from tblgen in the middle of a class. 
llvm-svn: 46676
 2008-02-03 05:43:57 +00:00
Chris Lattner
096fa73683 Generalize the SDOperand->SDOperand form of 
SelectionDAG::ReplaceAllUsesWith to handle replacement of
an SDOperand with *any* sdoperand, not just one for a node with
a single result.  Note that this has a horrible FIXME'd hack in it
to work around PR1975.  This should be removed when PR1975 is fixed.

llvm-svn: 46674
 2008-02-03 03:35:22 +00:00
Chris Lattner
df36b95e00 don't do ReplaceUses on a result that doesn't exist. 
llvm-svn: 46673
 2008-02-03 03:20:59 +00:00
Chris Lattner
b936d07617 add a -view-legalize-types-dags option, for viewing the dags going into legalize types. 
llvm-svn: 46672
 2008-02-03 02:05:04 +00:00
Evan Cheng
f61d1115af Get rid of the annoying blank lines before labels. 
llvm-svn: 46667
 2008-02-02 08:39:46 +00:00
Nick Lewycky
78e2e2cd07 Don't use uninitialized values. Fixes vec_align.ll on X86 Linux. 
llvm-svn: 46666
 2008-02-02 08:29:58 +00:00