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8689 Commits

Author SHA1 Message Date
Evan Cheng
72dbbce547 Teach pre-regalloc scheduler to schedule loads from nearby addresses. It may improve cache locality. This is controlled by -cluster-loads for now. 
llvm-svn: 94148
 2010-01-22 03:36:51 +00:00
Evan Cheng
c3ad04c825 Trim unneeded includes. 
llvm-svn: 94105
 2010-01-21 21:44:43 +00:00
Jim Grosbach
57ca094a52 back this out for now. Growing Function is not good. 
llvm-svn: 94097
 2010-01-21 20:10:22 +00:00
Dan Gohman
45406404b1 Run the verifier after LSR, to help catch use-before-def errors before 
they reach codegen.

llvm-svn: 94066
 2010-01-21 03:51:36 +00:00
Jim Grosbach
cf6e6e1c79 Make sure that landing pad entries in the EH call site table are in the proper 
order for SjLj style exception handling.

llvm-svn: 94055
 2010-01-21 00:43:30 +00:00
Jim Grosbach
98eae84f2e SjLj EH introduces can introduce an additional edge to a landing pad and pad 
normalization needs to take this into account.

llvm-svn: 94046
 2010-01-20 23:03:55 +00:00
Dale Johannesen
e6672a5bda make findDebugLoc a class method 
llvm-svn: 94032
 2010-01-20 21:36:02 +00:00
David Greene
80fdc554d0 When XDEBUG is enabled, check for SelectionDAG cycles at some key 
points.  This will help us find future problems like the one
described in PR6019.

llvm-svn: 94019
 2010-01-20 20:13:31 +00:00
Chris Lattner
abaff06105 don't send null pointers through the constantexpr codepath unneededly. 
llvm-svn: 94010
 2010-01-20 17:57:50 +00:00
Chris Lattner
abdec9bcc3 eliminate some uses of AsmPrinter::EmitIntXXX 
llvm-svn: 93996
 2010-01-20 07:41:15 +00:00
Chris Lattner
b619c47740 inline and radically simplify printDataDirective. It will eventually 
go completely away.

llvm-svn: 93994
 2010-01-20 07:33:29 +00:00
Chris Lattner
e4ac42e11e emit basic block labels with mcstreamer. 
llvm-svn: 93993
 2010-01-20 07:24:05 +00:00
Chris Lattner
d69a9cc334 emit integer and fp zeros as (e.g.) .byte 0 instead of .space 1, 
for tidiness.

llvm-svn: 93992
 2010-01-20 07:19:19 +00:00
Chris Lattner
3104fa4a71 signficant cleanups to EmitGlobalConstant (including streamerization 
of int initializers), change some methods to be static functions,
use raw_ostream::write_hex instead of a smallstring dance with 
APValue::toStringUnsigned(S, 16).

llvm-svn: 93991
 2010-01-20 07:11:32 +00:00
Chris Lattner
57908ea7db switch ConstantFP emission to use MCStreamer, significantly 
simplifying the code.

llvm-svn: 93988
 2010-01-20 06:53:37 +00:00
Chris Lattner
1d3b05933f make mcasmstreamer handle expanding 8 byte integer constants to 
4-byte constants if .quad isn't supported.  Switch a bunch of
methods used by the dwarf writer to use OutStreamer.EmitIntValue.

llvm-svn: 93987
 2010-01-20 06:45:39 +00:00
Chris Lattner
6ea74a85bb give createAsmStreamer an 'isLittleEndian' argument. 
llvm-svn: 93986
 2010-01-20 06:39:07 +00:00
Devang Patel
56de8ddd56 If a instruction belongs to another function (and not current function) as per debug info attached with the instruction then ignore the dangling lexical scope of this instruction. Such scopes are unreachable. 
llvm-svn: 93967
 2010-01-20 02:05:23 +00:00
David Greene
1908ff46da Add some asserts to check SelectionDAG problems earlier. 
llvm-svn: 93960
 2010-01-20 00:59:23 +00:00
Dale Johannesen
ac7865b75b Move findDebugLoc somewhere more central. Fix 
more cases where debug declarations affect
debug line info.

llvm-svn: 93953
 2010-01-20 00:19:24 +00:00
Dan Gohman
34b548b94a Fold (add x, shl(0 - y, n)) -> sub(x, shl(y, n)), to simplify some code 
that SCEVExpander can produce when running on behalf of LSR.

llvm-svn: 93949
 2010-01-19 23:30:49 +00:00
Chris Lattner
1b0d0247b2 simplify the rest of fp constant printing. 
llvm-svn: 93929
 2010-01-19 22:16:33 +00:00
Chris Lattner
53a988c8f1 simplify the code for printing x86 long double, don't do work 
for -fverbose-asm unless it's on.

llvm-svn: 93926
 2010-01-19 22:11:05 +00:00
Jakob Stoklund Olesen
b93c3b9624 Identify predicate and optional-def operands when printing machine 
instructions.

llvm-svn: 93925
 2010-01-19 22:08:34 +00:00
Chris Lattner
2842ccd76f eliminate AsmPrinter::EmitZeros: just use MCStreamer directly. 
llvm-svn: 93918
 2010-01-19 21:51:22 +00:00
Benjamin Kramer
5ad576dacf Update CMake list. 
llvm-svn: 93905
 2010-01-19 20:59:04 +00:00
David Greene
fde2825063 Add some new debugging APIs to print out "raw" SelectionDAGs to make 
understanding CannotYTetSelect and other errors easier.

llvm-svn: 93901
 2010-01-19 20:37:34 +00:00
Chris Lattner
336c2b0d47 Generalize mcasmstreamer data emission APIs to take an address space 
identifier.  There is no way to work around it.

llvm-svn: 93896
 2010-01-19 19:46:13 +00:00
Evan Cheng
4b916556a5 Do not extend extension results beyond the use of a PHI instruction at the start of a use block. A PHI use is expected to kill its source values. 
llvm-svn: 93895
 2010-01-19 19:45:51 +00:00
Chris Lattner
a5895e4127 refactor code to be static functions instead of methods on AsmPrinter. 
This fixes some bugs handling address spaces.

llvm-svn: 93891
 2010-01-19 19:10:44 +00:00
Chris Lattner
b98efb6e76 mcstreamerize AsmPrinter::EmitZeros, at least when emitting to the 
default address space.

llvm-svn: 93890
 2010-01-19 18:58:52 +00:00
Chris Lattner
50636e0db8 remove MAI::ZeroDirectiveSuffix, which is only used by MASM, 
which we don't support anymore.

llvm-svn: 93886
 2010-01-19 18:37:01 +00:00
Jim Grosbach
034f69e0aa For aligned load/store instructions, it's only required to know whether a 
function can support dynamic stack realignment. That's a much easier question
to answer at instruction selection stage than whether the function actually
will have dynamic alignment prologue. This allows the removal of the
stack alignment heuristic pass, and improves code quality for cases where
the heuristic would result in dynamic alignment code being generated when
it was not strictly necessary.

llvm-svn: 93885
 2010-01-19 18:31:11 +00:00
Chris Lattner
405ac51ba0 mcstreamer'ize the rest of EmitGlobalVariable that is used on 
darwin.  The next big piece to get global variables streamerized
is EmitGlobalConstant.

llvm-svn: 93870
 2010-01-19 06:41:24 +00:00
Chris Lattner
15e2a64ec2 stop using the .lcomm pseudoop on darwin, instead, directly use the 
.zerofill directive.  Streamerize its generation.

llvm-svn: 93868
 2010-01-19 06:25:51 +00:00
Devang Patel
a230047a58 MDNodes are not expected to disappear or replaced by another MDNode, so there is no need to pay the cost of WeakVH and ValueMaps. 
llvm-svn: 93865
 2010-01-19 06:19:05 +00:00
Devang Patel
bb63f9dd91 Avoid including DebugInfo.h in AsmPrinter.h 
llvm-svn: 93864
 2010-01-19 06:09:04 +00:00
Chris Lattner
e339d60351 mc'ize some stuff, don't comment out .lcomm directive in -fverbose-asm mode. 
llvm-svn: 93860
 2010-01-19 06:01:04 +00:00
Chris Lattner
ebe63b403e factor this code better. 
llvm-svn: 93859
 2010-01-19 05:51:42 +00:00
Chris Lattner
377bd87849 Now that we have everything nicely factored (e.g. asmprinter is not 
doing global variable classification anymore) and hookized, sink almost
all target targets global variable emission code into AsmPrinter and out
of each target.

Some notes:

1. PIC16 does completely custom and crazy stuff, so it is not changed.
2. XCore has some custom handling for extra directives.  I'll look at it next.
3. This switches linux/ppc to use .globl instead of .global.  If .globl is
   actually wrong, let me know and I'll fix it.
4. This makes linux/ppc get a lot of random cases right which were obviously
   wrong before, it is probably now a bit healthier.
5. Blackfin will probably start getting .comm and other things that it didn't
   before.  If this is undesirable, it should explicitly opt out of these
   things by clearing the relevant fields of MCAsmInfo.

This leads to a nice diffstat:
 14 files changed, 127 insertions(+), 830 deletions(-)

llvm-svn: 93858
 2010-01-19 05:38:33 +00:00
Chris Lattner
f904832189 hoist handling of external globals and special globals up to common code. 
This makes a similar code dead in all the other targets, I'll clean it up
in a bit.

This also moves handling of lcomm up before acquisition of a section,
since lcomm never needs a section.

llvm-svn: 93851
 2010-01-19 04:39:15 +00:00
Chris Lattner
3821a5f168 move production of .reference directives for static ctor/dtor list on 
darwin into common code.

llvm-svn: 93849
 2010-01-19 04:34:02 +00:00
Devang Patel
885bd38bfc Revert accident check-in from r93165. 
llvm-svn: 93832
 2010-01-19 01:26:02 +00:00
Dale Johannesen
e1ba7ecf45 Revert 93811 per request. 
llvm-svn: 93818
 2010-01-19 00:10:52 +00:00
Dale Johannesen
0b8b2713d3 Enable code to emit dbg.declare as DEBUG_VALUE 
comments (fast isel, X86).  This doesn't seem
to break any functionality, but will introduce
cases where -g affects the generated code.  I'll
be fixing that.

llvm-svn: 93811
 2010-01-18 23:34:55 +00:00
Evan Cheng
5cf9d23e4e Canonicalize -1 - x to ~x. 
Instcombine does this but apparently there are situations where this pattern will escape the optimizer and / or created by isel. Here is a case that's seen in JavaScriptCore:
  %t1 = sub i32 0, %a
  %t2 = add i32 %t1, -1
The dag combiner pattern: ((c1-A)+c2) -> (c1+c2)-A
will fold it to -1 - %a.

llvm-svn: 93773
 2010-01-18 21:38:44 +00:00
Bill Wendling
5678a9711b - Add a comment to the callback indicating that it's *extremely* not a good 
idea, but unfortunately necessary.
- Default to using 4-bytes for the LSDA pointer encoding to agree with the
  encoded value in the CIE.

llvm-svn: 93753
 2010-01-18 19:36:27 +00:00
Chris Lattner
86287085ba remove the MAI argument to MCExpr::print and switch overthing to use << when printing them. 
llvm-svn: 93699
 2010-01-18 00:37:40 +00:00
Chris Lattner
6f360c3c91 now that MCSymbol::print doesn't use it's MAI argument, we can 
remove it and change all the code that prints MCSymbols to use 
<< instead, which is much simpler and cleaner.

llvm-svn: 93695
 2010-01-17 21:43:43 +00:00
Chris Lattner
57ac0be2b5 now that mangler is in libtarget, it can use MCAsmInfo instead of clients 
having to pass various fields from it in.  Simplify.

llvm-svn: 93686
 2010-01-17 18:22:35 +00:00