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9333 Commits

Author SHA1 Message Date
Chris Lattner
ed7d10e100 SIGN_EXTEND from the same type as the dest is valid. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98548 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-15 16:15:56 +00:00
Chris Lattner
7fb5c2dbec sink the call to VT.getSizeInBits() down into its uses, 
not all unary nodes necessarily have a simple result type.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98547 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-15 16:05:15 +00:00
Chris Lattner
1f8008cf21 fix MCSectionELF to not leak memory, just like I did for MCSymbol. 
MCSectionMachO is already fine (yay for fixed size arrays?),
MCSectionCOFF still leaks.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98537 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-15 06:23:52 +00:00
Chris Lattner
a833f6b061 remove dead method. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98526 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-15 00:00:42 +00:00
Benjamin Kramer
1610d430be Remove pointless forward declaration, MSVC got confused by this. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98519 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-14 22:00:28 +00:00
Duncan Sands
d2c817eff1 Turn calls to copysignl into an FCOPYSIGN node. Handle FCOPYSIGN nodes 
with ppc_f128 type by having the type legalizer turn these back into a
call to copysignl.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98514 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-14 21:08:40 +00:00
Evan Cheng
a8efe28a44 Rename SDDbgValue.h to SDNodeDbgValue.h for consistency. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98513 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-14 19:56:39 +00:00
Chris Lattner
c4a3f23b92 fix ShrinkDemandedOps to not leave dead nodes around, 
fixing PR6607


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98512 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-14 19:46:02 +00:00
Chris Lattner
25e0ab9ae5 rewrite ShrinkDemandedOps to be faster and indent less, 
no functionality change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98511 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-14 19:43:04 +00:00
Chris Lattner
552186dfd3 make -view-isel-dags print after the 'ShrinkDemandedOps' pass. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98509 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-14 19:27:55 +00:00
Anton Korobeynikov
927411b7ce Make default expansion for FP16 <-> FP32 nodes into libcalls 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98501 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-14 18:42:24 +00:00
Anton Korobeynikov
be5b032e4b Add DAG nodes to represent FP16 <-> FP32 intrinsics 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98500 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-14 18:42:15 +00:00
Chris Lattner
3b9d6216a4 fix AsmPrinter::GetBlockAddressSymbol to always return a unique 
label instead of trying to form one based on the BB name (which
causes collisions if the name is empty).  This fixes PR6608


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98495 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-14 17:53:23 +00:00
Chris Lattner
63d7836267 get MMI out of the label uniquing business, just go to MCContext 
to get unique assembler temporary labels.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98489 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-14 08:36:50 +00:00
Chris Lattner
8d9aaba84e don't use getDWLabel("label" anymore, always go through MMI. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98485 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-14 08:18:13 +00:00
Chris Lattner
0397ada8ae remove now-dead code, all labels use MCSymbols. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98484 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-14 08:17:53 +00:00
Chris Lattner
25b68c6770 change SrcLineInfo to contain a label instead of a label ID. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98483 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-14 08:15:55 +00:00
Chris Lattner
2e9919a5e5 Now that DBG_LABEL is updated, we can finally make MachineMove 
contain an MCSymbol instead of a label index.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98482 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-14 08:12:40 +00:00
Chris Lattner
6ffcccab51 change the DBG_LABEL MachineInstr to always be created 
with an MCSymbol instead of an immediate.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98481 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-14 07:56:48 +00:00
Chris Lattner
9a38e67590 unbreak the build, grr symlinks. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98477 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-14 07:36:49 +00:00
Chris Lattner
90f172aa80 Change this code to allocate temporary labels from mccontext, 
not from MMI.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98475 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-14 07:29:45 +00:00
Chris Lattner
aba9bcb9b6 switch GC_LABEL to use an MCSymbol operand instead of a label ID operand. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98474 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-14 07:27:07 +00:00
Chris Lattner
f14645cc64 Fix some EH failures on NNT I introduced in r98461 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98471 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-14 07:02:50 +00:00
Chris Lattner
21f9c8de53 fix a bug I introduced in r98459, causing some NNT failures. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98470 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-14 06:50:56 +00:00
Chris Lattner
7561d48095 change the LabelSDNode to be EHLabelSDNode and make it hold 
an MCSymbol.  Make the EH_LABEL MachineInstr hold its label
with an MCSymbol instead of ID.  Fix a bug in MMI.cpp which
would return labels named "Label4" instead of "label4".


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98463 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-14 02:33:54 +00:00
Chris Lattner
18589de9b1 eliminate InvalidateLabel and LabelIDList from MMI and replace 
them with a counter.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98462 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-14 02:24:55 +00:00
Chris Lattner
b91306053d use Label->isDefined() instead of isLabelDeleted() now that we 
consistently use MCSymbol and only call this predicate after
they should have been emitted.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98461 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-14 02:20:58 +00:00
Chris Lattner
1611273351 change EH related stuff (other than EH_LABEL) to use MCSymbol 
instead of label ID's.  This cleans up and regularizes a bunch 
of code and makes way for future progress.

Unfortunately, this pointed out to me that JITDwarfEmitter.cpp
is largely copy and paste from DwarfException/MachineModuleInfo
and other places.  This is very sad and disturbing. :(

One major change here is that TidyLandingPads moved from being
called in DwarfException::BeginFunction to being called in
DwarfException::EndFunction.  There should not be any 
functionality change from doing this, but I'm not an EH expert.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98459 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-14 01:41:15 +00:00
Chris Lattner
1b2eb0e8a6 eliminate the now-unneeded context argument of MBB::getSymbol() 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98451 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-13 21:04:28 +00:00
Chris Lattner
11d53c129f rearrange MCContext ownership. Before LLVMTargetMachine created it 
and passing off ownership to AsmPrinter.  Now MachineModuleInfo
creates it and owns it by value.  This allows us to use MCSymbols
more consistently throughout the rest of the code generator, and
simplifies a bit of code.  This also allows MachineFunction to 
keep an MCContext reference handy, and cleans up the TargetRegistry
interfaces for AsmPrinters.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98450 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-13 20:55:24 +00:00
Chris Lattner
72aaa3c798 add support for MCSymbols as operands to MachineInstrs. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98433 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-13 08:14:18 +00:00
Chris Lattner
5e6cbe0eff simplify EmitFrameMoves to take BaseLabel in as a symbol 
instead of as a stem+idx pair, simplify the "is a new 
location" check to use symbol comparison.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98432 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-13 08:05:25 +00:00
Chris Lattner
fb65807c34 factor some labels, simplify some code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98429 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-13 07:40:56 +00:00
Chris Lattner
206d61e62f various cleanups. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98426 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-13 07:26:18 +00:00
Chris Lattner
bc733f54c0 reimplement the string pool used for inlined function 
entries to not thrash std::strings and MCSymbols.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98415 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-13 02:17:42 +00:00
Chris Lattner
528a126d32 remove gone method, grr symlinks. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98392 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-12 21:30:49 +00:00
Chris Lattner
deb0cba1ba inline the now-trivial implementation of GetGlobalValueSymbol into 
some of its callers.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98388 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-12 21:09:07 +00:00
Chris Lattner
b87c305fa7 give Mangler access to TargetData. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98378 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-12 20:47:28 +00:00
Chris Lattner
73ff564d65 finally give Mangler a getSymbol method, which returns an MCSymbol 
for a global instead of messing around with string buffers.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98366 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-12 18:55:20 +00:00
Chris Lattner
0d941c15c0 remove dead code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98365 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-12 18:49:32 +00:00
Chris Lattner
5ef31a039d make the mangler take an MCContext instead of an MAI. 
No functionality change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98363 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-12 18:44:54 +00:00
Chris Lattner
fdab14b105 remove MAI argument from createAsmStreamer since it 
can get it from the context now.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98361 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-12 18:28:53 +00:00
Chris Lattner
20e3280f3f fix a bug emitting .secrel32 that I introduced, PR6587, patch 
by A.Mazur!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98360 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-12 18:10:35 +00:00
Jeffrey Yasskin
5c213dc78c Free DbgScopes in DwarfDebug::endFunction(). Also increased the const-ness of 
several fields to make it easier to figure out where bugs might be creeping in.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98358 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-12 17:45:06 +00:00
Duncan Sands
0ac5d2d7ff Revert turning copysignl into a COPYSIGN node for the moment: 
ppc calls copysignl with a 128 bit ppc long double, resulting
in a node that the type legalizer doesn't know how to expand.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98357 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-12 17:41:34 +00:00
Duncan Sands
bb2f0c541c Now that it's supported, turn copysignl into a COPYSIGN node. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98348 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-12 12:13:59 +00:00
Duncan Sands
5d54b4112d Fix PR6522: implement copysign expansion for x86 long double 
(it seems that FreeBSD doesn't have copysignl).  Done by
removing a bunch of assumptions from the code.  This may also
help with sparc 128 bit floats.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98346 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-12 11:45:06 +00:00
Chris Lattner
b3e87b2262 fix PR6577, a bug in sdbuilder lowering select instructions 
whose true value was not Val#0.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98336 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-12 07:15:36 +00:00
Devang Patel
1b596e399b There is no need to create specification DIE for definitions at DIFile level. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98302 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-11 23:44:52 +00:00
Jakob Stoklund Olesen
56698803d9 Extract methods from LocalRewriter::RewriteMBB bringing it down to 666 lines. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98295 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-11 23:04:34 +00:00
Chris Lattner
c18409aed8 change MCContext to always have an MCAsmInfo. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98293 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-11 22:53:35 +00:00
Chris Lattner
42263e2e40 fix a fixme in TargetLoweringObjectFile::getExprForDwarfReference 
where we used ot create an MCSymbol for ".".  Now emit an assembler
temporary label and reference it instead of "." textually.

rdar://7739457


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98292 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-11 21:55:20 +00:00
Dan Gohman
a257095ebb Remove getWidenVectorType, which is no longer used. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98289 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-11 21:39:57 +00:00
Chris Lattner
3192d14076 rename getSymbolForDwarf* to getExprForDwarf* since it returns 
an MCExpr and not an MCSymbol.  Change it to take an MCStreamer,
which is currently unused.

No functionality change.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98278 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-11 19:41:58 +00:00
Evan Cheng
af1871fa6d In case of tail call size of Ins and InVals may not match. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98277 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-11 19:38:18 +00:00
Jeffrey Yasskin
d0f393d46f Avoid leaking CompileUnits in DwarfDebug.cpp. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98268 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-11 18:29:55 +00:00
Richard Osborne
95da605e15 Add a new jump table encoding to indicate jump tables entries 
are inside the function by the target at the point of use.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98255 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-11 14:58:16 +00:00
Evan Cheng
826cbac2a0 The check for coalescing a virtual register to a physical register, e.g. 
cl = EXTRACT_SUBREG reg1024, 1, is overly conservative. It should check
for overlaps of vr's live interval with the super registers of the
physical register (ECX in this case) and let JoinIntervals() handle checking
the coalescing feasibility against the physical register (cl in this case).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98251 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-11 08:20:21 +00:00
Daniel Dunbar
0193c0994b Remove dead include. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98225 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-11 02:28:48 +00:00
Dale Johannesen
e68ea060c7 Fix debug_value handling. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98224 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-11 02:10:24 +00:00
Daniel Dunbar
1f3e445184 MC: Provide MCAssembler with a TargetAsmBackend. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98222 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-11 01:34:27 +00:00
Jakob Stoklund Olesen
2cb4202f07 VirtRegRewriter spring cleaning. No functional change. 
Move methods out of line and M-x whitespace-cleanup.
Promote common method arguments to member variables.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98207 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-11 00:11:33 +00:00
Chris Lattner
f2f64e9063 fix PR6533 by updating the br(xor) code to remember the case 
when it looked past a trunc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98203 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-10 23:46:44 +00:00
Dale Johannesen
e3b8533e71 Cosmetic: lengthen names and improve comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98202 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-10 23:37:24 +00:00
Bill Wendling
cebae36f57 Add a bit along with the MCSymbols stored in the MachineModuleInfo maps that 
indicates that an MCSymbol is external or not. (It's true if it's external.)
This will be used to specify the correct information to add to non-lazy
pointers. That will be explained further when this bit is used.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98199 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-10 22:34:10 +00:00
Dale Johannesen
bfdf7f3852 Progress towards shepherding debug info through SelectionDAG. 
No functional effect yet.  This is still evolving and should
not be viewed as final.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98195 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-10 22:13:47 +00:00
Dan Gohman
8f78e3c87d Fix another bitwidth calculation to handle vector types; based on a 
patch by Micah Villmow for PR6572.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98188 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-10 21:04:53 +00:00
Dale Johannesen
2cd9ffef6e Fix another place where DEBUG_VALUE affected codegen. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98181 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-10 19:57:56 +00:00
Dale Johannesen
a2f767b1a7 Fix a bug in DEBUG_VALUE handling Devang ran into. 
I'll get this loop right yet.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98155 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-10 15:06:26 +00:00
Chris Lattner
09d53fecfc move three lowering hooks from MAI to TLOF and make one of them 
semantic instead of syntactic.  This completes MCization of
darwin/x86[-64]!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98145 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-10 07:20:42 +00:00
Dale Johannesen
c5cf227f3d This survived a bootstrap, so let's try 98104 again. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98137 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-10 05:45:47 +00:00
Evan Cheng
fac4f1f181 Enable machine cse pass. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98132 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-10 03:07:41 +00:00
Chris Lattner
974c0fb404 mcize the rest of EH emission, only one more directive missing 
for darwin/x86 to be completely mcized.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98130 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-10 02:48:06 +00:00
Chris Lattner
49f618a1e4 add missing filename! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98125 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-10 02:29:31 +00:00
Chris Lattner
98cdab53c3 set the temporary bit on MCSymbols correctly. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98124 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-10 02:25:11 +00:00
Evan Cheng
2938a00f29 Add a couple more heuristics to neuter machine cse some more. 
1. Be careful with cse "cheap" expressions. e.g. constant materialization. Only cse them when the common expression is local or in a direct predecessor. We don't want cse of cheap instruction causing other expressions to be spilled.
2. Watch out for the case where the expression doesn't itself uses a virtual register. e.g. lea of frame object. If the common expression itself is used by copies (common for passing addresses to function calls), don't perform the cse. Since these expressions do not use a register, it creates a live range but doesn't close any, we want to be very careful with increasing register pressure.

Note these are heuristics so machine cse doesn't make register allocator unhappy. Once we have proper live range splitting and re-materialization support in place, these should be evaluated again.

Now machine cse is almost always a win on llvm nightly tests on x86 and x86_64.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98121 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-10 02:12:03 +00:00
Chris Lattner
d85fc6e0b1 inline away a form of IsPCRelative, eliminating the 
dead IsPCRel argument.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98117 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-10 01:17:49 +00:00
Chris Lattner
188a87da79 add some fixme's for MCizing. EH still has a few things that 
need to be MCized, but the last debug info thing are LEB and
cygwin specific (which the MC api doesn't support yet) and
one specific form of EmitReference which I'll tackle next.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98116 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-10 01:04:13 +00:00
Jim Grosbach
7c617b5e53 Clear up the last (famous last words) frame index value reuse issues for Thumb1. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98109 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-10 00:13:42 +00:00
Dale Johannesen
7dda453410 Speculatively revert 98104; could be what's causing crashes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98108 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-10 00:11:34 +00:00
Chris Lattner
90e4af7b9d mcize uses of PrintRelDirective and eliminate it. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98107 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-10 00:09:21 +00:00
Chris Lattner
4aeaca4053 inline the bool form of PrintRelDirective away, leaving just the unsigned form. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98106 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 23:54:52 +00:00
Chris Lattner
233f52be36 eliminate EOL, adding all comments with the OutStreamer.AddComment 
method.  With this, comments should end up on the same lines as the .byte
directives (for example) and we now get no output with:

$ llc CodeGen/X86/2009-02-12-DebugInfoVLA.ll -o - -filetype=null -asm-verbose

woot.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98105 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 23:52:58 +00:00
Dale Johannesen
7f876967c0 Ever more complicated DEBUG_VALUE fixes for branch folding. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98104 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 23:52:37 +00:00
Chris Lattner
0d9d70f013 eliminate a bunch of \n's that are being printed to O. Next up is to kill 
off "EOL".


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98102 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 23:38:23 +00:00
Chris Lattner
fcdae492ea convert the non-"ispcrel" case of EmitReference to MC, 
significant debug info testcases are now all going through
MCStreamer, though they print a lot of extraneous newlines to "O".


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98101 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 23:19:15 +00:00
Jim Grosbach
dff4b4c5a7 Change the Value argument to eliminateFrameIndex to a type-tagged value. This 
is preparatory to having PEI's scavenged frame index value reuse logic
properly distinguish types of frame values (e.g., whether the value is
stack-pointer relative or frame-pointer relative).

No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98086 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 21:45:49 +00:00
Evan Cheng
bfc9999563 Allow more cross-rc coalescing. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98048 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 06:38:17 +00:00
Chris Lattner
c608784dc8 reapply r98035: 
Now that setStartLabel takes an MCSymbol, we can de-ID'ize
beginScope and RecordSourceLine.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98047 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 04:54:43 +00:00
Chris Lattner
6c7dfc0463 add some extra checks. I'm not sure why, but this does unbreak a 
failure remaining on mainline.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98046 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 04:48:35 +00:00
Evan Cheng
7ef1840d9e Revert accidental commit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98045 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 04:04:38 +00:00
Jakob Stoklund Olesen
1552cccc76 Don't do illegal cross-class coalescing. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98044 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 03:56:06 +00:00
Evan Cheng
31f94c7c22 - Make the machine cse dumb coalescer (as opposed to the more awesome simple 
coalescer) handle sub-register classes.
- Add heuristics to avoid non-profitable cse. Given the current lack of live
  range splitting, avoid cse when an expression has PHI use and the would be
  new use is in a BB where the expression wasn't already being used.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98043 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 03:21:12 +00:00
Eric Christopher
ee6414cf04 Speculatively revert r98035. It appears to have caused a set of buildbot 
failures.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98039 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 02:36:31 +00:00
Dan Gohman
19b3826d0f Attempt to make this debug output meaningful, both in the case of 
multibyte opcodes and in the case of multiple scopes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98036 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 02:15:05 +00:00
Chris Lattner
1e233f510c Now that setStartLabel takes an MCSymbol, we can de-ID'ize 
beginScope and RecordSourceLine.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98035 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 02:08:02 +00:00
Chris Lattner
b7db733482 change DbgScope to keep track of the start/end label as MCSymbol* 
now that the dependence on ID is removed from MMI.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98034 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 01:58:53 +00:00
Chris Lattner
5b9062cb3a remove a useless optimization: now that label replacement never 
happens, the start/end of a scope can never be the same.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98032 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 01:52:43 +00:00
Chris Lattner
a34ec2290f strength reduce MMI::MappedLabel to MMI::isLabelDeleted, 
and add a FIXME about how we are eventually going to zap this
lookup table once mc world domination is complete.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98031 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 01:51:43 +00:00
Chris Lattner
b2cc1a39f7 mcstreamerize AsmPrinter::printLabel. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98025 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 01:02:30 +00:00
Jakob Stoklund Olesen
35071a0847 Disable physical register coalescing when the number of live ranges for the 
physreg becomes ridiculously high.

std::upper_bound may be log(N), but for sufficiently large live intervals, it
becomes log(N)*cachemiss = a long long time.

This patch improves coalescer time by 4500x for a function with 20000
function calls. The generated code is different, but not significantly worse -
the allocator hints are almost as good as physreg coalescing anyway.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98023 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 00:59:48 +00:00
Chris Lattner
6cde3e6e99 add a EmitSymbolValue convenience method to MCStreamer. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98017 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 00:39:24 +00:00
Chris Lattner
6ed0f90dac make InlineInfoLabels hold MCSymbol*'s, avoiding 
recomputation of the labels.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98016 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 00:31:02 +00:00
Chris Lattner
b9dc5f7b58 mc'ize the last use of PrintLabelName and eliminate PrintLabelName. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98015 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 00:26:09 +00:00
Chris Lattner
ef6b14f51c eliminate an argument from PrintRelDirective, sinking 
the one special case into EmitSectionOffset.  MCize
the non-special case in EmitSectionOffset.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98014 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 00:17:58 +00:00
Dan Gohman
8f03d75161 Print the correct index in the "match failed at index" message. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98013 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 00:07:36 +00:00
Chris Lattner
b67d69df65 remove the suffix form of PrintLabelName, which was only 
used for 'flavor'.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98012 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 00:00:57 +00:00
Chris Lattner
c3421bb805 now that the debug and eh emitters use a common .set counter, 
we can eliminate "flavor".


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98011 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 00:00:15 +00:00
Chris Lattner
0d50c7620d move .set generation out of DwarfPrinter into AsmPrinter and 
MCize it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98010 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 23:58:37 +00:00
Evan Cheng
5196018d9c Don't waste time trying to CSE labels, phis, inline asm. Definitely avoid cse implicit-def for obvious performance reason. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98009 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 23:49:12 +00:00
Evan Cheng
6c3b8ac6c9 Restrict machine cse to really trivial coalescing. Leave the heavy lifting to a real coalescer. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98007 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 23:28:08 +00:00
Chris Lattner
57578766aa simplify EmitSectionOffset to always use .set if it is 
available, the only thing this affects is that we produce
.set in one case we didn't before, which shouldn't harm
anything.  Make EmitSectionOffset call EmitDifference
instead of duplicating it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98005 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 23:23:25 +00:00
Chris Lattner
effa868d38 Remove a version of EmitDifference. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98002 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 23:02:59 +00:00
Chris Lattner
dd8187a3e9 eliminate a form of PrintLabelName. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97999 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 22:52:49 +00:00
Chris Lattner
326861c4c8 remove another form of EmitReference. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97998 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 22:50:36 +00:00
Chris Lattner
c7249da2e9 eliminate the non-MCSymbol versions of EmitReference. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97997 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 22:47:57 +00:00
Chris Lattner
f829eef8fa mc'ize EmitLabel. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97996 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 22:44:40 +00:00
Chris Lattner
4faf59af82 merge DIEObjectLabel and DIEDwarfLabel into DIELabel. 
Yes, DIE you fiendish labels, die all of you.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97995 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 22:31:46 +00:00
Chris Lattner
b98b1bf432 elimiante the DWLabel class, using MCSymbol instead. Start 
switching some stuff over to passing around MCSymbol* instead
of stem+ID.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97993 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 22:23:36 +00:00
Devang Patel
77bf295dbb Derive DIType from DIScope. This simplifies getContext() where for members the context is a type. This also eliminates need of CompileUnitMaps maintained by dwarf writer. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97990 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 22:02:50 +00:00
Devang Patel
3c91b05d2b Avoid using DIDescriptor.isNull(). 
This is a first step towards eliminating checks in Descriptor constructors.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97975 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 20:52:55 +00:00
Devang Patel
0ef3fa6aab Revert r97947. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97963 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 19:20:38 +00:00
Devang Patel
d8cc5d5256 Avoid using DIDescriptor.isNull(). 
This is a first step towards eliminating unncessary constructor checks in light weight DIDescriptor wrappers.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97947 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 18:25:48 +00:00
Dale Johannesen
fab4a25d46 Add Order to SDDbgValue 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97939 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 05:39:50 +00:00
Dale Johannesen
84839daa59 Fix dbg value handling in tail merging. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97938 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 05:38:13 +00:00
Douglas Gregor
1ddcf35b68 Revert r97917, which was causing Clang Debug self-host failures. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97932 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 02:58:37 +00:00
Jeffrey Yasskin
9467f0e3bd Roll r97906 forward again, without double-deleting CompileUnit::IndexTyDie. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97917 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-07 17:10:13 +00:00
Chris Lattner
acee647b13 Use Other as a sentinel instead of iAny. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97914 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-07 07:45:08 +00:00
Jeffrey Yasskin
8c42ca9374 _2_ gcc crashes, ah, ah, ah... 
(Rolling back r97906.)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97909 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-07 07:16:49 +00:00
Jeffrey Yasskin
f7399bf929 Avoid leaking CompileUnits and DbgScopes from DwarfDebug. Leaks found by Valgrind! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97906 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-07 06:55:35 +00:00
Chris Lattner
98f15d27cd tidy up 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97895 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-07 04:28:09 +00:00
Evan Cheng
6cc1aeaad2 Don't update physical register def. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97861 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-06 01:14:19 +00:00
Dale Johannesen
06a26637da Add some new bits of debug info handling. No 
functional change yet.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97855 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-06 00:03:23 +00:00
Dan Gohman
0fa9d1d901 Reapply r97778 and r97779, enabled only for unsigned i64 to f64 
conversions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97854 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-06 00:00:55 +00:00
Charles Davis
314fef6127 Don't emit global symbols into the (__TEXT,__ustring) section on Darwin. This 
is a workaround for <rdar://problem/7672401/> (which I filed).

This let's us build Wine on Darwin, and it gets the Qt build there a little bit
further (so Doug says).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97845 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 22:28:45 +00:00
Jakob Stoklund Olesen
53e000bac3 Better handling of dead super registers in LiveVariables. We used to do this: 
CALL ... %RAX<imp-def>
   ... [not using %RAX]
   %EAX = ..., %RAX<imp-use, kill>
   RET %EAX<imp-use,kill>

Now we do this:

   CALL ... %RAX<imp-def, dead>
   ... [not using %RAX]
   %EAX = ...
   RET %EAX<imp-use,kill>

By not artificially keeping %RAX alive, we lower register pressure a bit.

The correct number of instructions for 2008-08-05-SpillerBug.ll is obviously
55, anybody can see that. Sheesh.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97838 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 21:49:17 +00:00
Jakob Stoklund Olesen
a76e816844 We don't really care about correct register liveness information after the 
post-ra scheduler has run. Disable the verifier checks that late in the game.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97837 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 21:49:13 +00:00
Jakob Stoklund Olesen
580bba2b0d Avoid creating bad PHI instructions when BR is being const-folded. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97836 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 21:49:10 +00:00
Chris Lattner
18fdabadca Fix PR6497, a bug where we'd fold a load into an addc 
node which has a flag.  That flag in turn was used by an
already-selected adde which turned into an ADC32ri8 which
used a selected load which was chained to the load we
folded.  This flag use caused us to form a cycle.  Fix
this by not ignoring chains in IsLegalToFold even in
cases where the isel thinks it can.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97791 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 06:19:13 +00:00
Chris Lattner
9bbcd5ee5b inline a small function with one call site. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97789 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 05:49:45 +00:00
Dan Gohman
b6b343d77a Revert r97778 and r97779. They're somehow breaking llvm-gcc builds. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97781 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 02:40:23 +00:00
Dan Gohman
808ab341b4 Fix these constants to be more portable. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97779 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 02:13:10 +00:00
Dan Gohman
cfa7ca1997 Rewrite i64-to-f64 conversion using an algorithm which handles 
rounding correctly. This implementation is a generalization of
the x86_64 code in compiler-rt.

This fixes rdar://7683708.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97778 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 02:00:46 +00:00
Dale Johannesen
b0812f114b Fix some more places where dbg_value affected codegen. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97765 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 00:02:59 +00:00
Jeffrey Yasskin
e8cfa63e4e Fix memcheck-found leaks: one false positive from using new[], and one true 
positive where pointers would be leaked on llvm_shutdown.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97759 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-04 22:15:01 +00:00
Jim Grosbach
b58a59b3c1 For SJLJ exception handling, make sure that all calls that are not marked 
as nounwind are marked with a -1 call-site value. This is necessary to, for
example, correctly process exceptions thrown from within an "unexpected"
execption handler (see SingleSource/Regression/C++/EH/expection_spec_test.cpp).



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97757 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-04 22:07:46 +00:00
Evan Cheng
c46e293e94 Run machine licm before machine cse to avoid messing up licm opportunities. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97752 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-04 21:28:09 +00:00
Evan Cheng
a5f32cb3d3 Avoid cse load instructions unless they are known to be invariant loads. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97747 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-04 21:18:08 +00:00
Chris Lattner
c19ae9d91d add a statistic for # times fastisel fails. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97738 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-04 19:46:56 +00:00
Dan Gohman
ba72b0c4e1 Fix a typo Duncan noticed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97735 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-04 19:11:28 +00:00