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Author SHA1 Message Date
Duncan Sands
392dc77fc6 Cleanup whitespace and comments, and tweak some 
prototypes, in operand type legalization.  No
functionality change.

llvm-svn: 62680
 2009-01-21 09:00:29 +00:00
Owen Anderson
d1a2413f88 I accidentally removed this check in an earlier commit, which cause breakage in the pre alloc splitter. 
llvm-svn: 62678
 2009-01-21 08:18:03 +00:00
Sanjiv Gupta
37fdb5ca11 Implement LowerOperationWrapper for legalizer. 
Also a few signed comparison fixes.

llvm-svn: 62665
 2009-01-21 05:44:05 +00:00
Scott Michel
c80e71ac35 CellSPU: 
- Ensure that (operation) legalization emits proper FDIV libcall when needed.
- Fix various bugs encountered during llvm-spu-gcc build, along with various
  cleanups.
- Start supporting double precision comparisons for remaining libgcc2 build.
  Discovered interesting DAGCombiner feature, which is currently solved via
  custom lowering (64-bit constants are not legal on CellSPU, but DAGCombiner
  insists on inserting one anyway.)
- Update README.

llvm-svn: 62664
 2009-01-21 04:58:48 +00:00
Sanjiv Gupta
074553c4fb Allow targets to legalize operations (with illegal operands) that produces multiple values. For example, a load with an illegal operand (a load produces two values, a value and chain). 
llvm-svn: 62663
 2009-01-21 04:48:39 +00:00
Evan Cheng
0ed6a9d7e0 Favors generating "not" over "xor -1". For example. 
unsigned test(unsigned a) {
  return ~a;
}
llvm used to generate:
movl    $4294967295, %eax
xorl    4(%esp), %eax

Now it generates:
movl      4(%esp), %eax
notl      %eax

It's 3 bytes shorter.

llvm-svn: 62661
 2009-01-21 02:09:05 +00:00
Dale Johannesen
6854f86296 Make special cases (0 inf nan) work for frem. 
Besides APFloat, this involved removing code
from two places that thought they knew the
result of frem(0., x) but were wrong.

llvm-svn: 62645
 2009-01-21 00:35:19 +00:00
Owen Anderson
10ad717dc8 Be more aggressive about renumbering vregs after splitting them. 
llvm-svn: 62639
 2009-01-21 00:13:28 +00:00
Devang Patel
c129e798c7 Encode member accessibility. 
llvm-svn: 62638
 2009-01-21 00:08:04 +00:00
Devang Patel
bb4362571a Appropriately mark fowrad decls. 
llvm-svn: 62625
 2009-01-20 22:27:02 +00:00
Evan Cheng
5bea79c062 Fix PR3243: a LiveVariables bug. When HandlePhysRegKill is checking whether the last reference is also the last def (i.e. dead def), it should also check if last reference is the current machine instruction being processed. This can happen when it is processing a physical register use and setting the current machine instruction as sub-register's last ref. 
llvm-svn: 62617
 2009-01-20 21:25:12 +00:00
Duncan Sands
eb7ffc9654 Fix typo. Patch by Alexei Svitkine. 
llvm-svn: 62616
 2009-01-20 21:20:23 +00:00
Bill Wendling
cf901346da Use "SINT_TO_FP" instead of "UINT_TO_FP" when getting the exponent. This was 
causing the limited precision stuff to produce the wrong result for values in
the range [0, 1).

llvm-svn: 62615
 2009-01-20 21:17:57 +00:00
Devang Patel
4c79c8be26 Fix struct member's debug info. 
llvm-svn: 62610
 2009-01-20 21:02:02 +00:00
Devang Patel
ccc3162f69 Need only one set of debug info versions enum. 
llvm-svn: 62602
 2009-01-20 19:22:03 +00:00
Evan Cheng
b3c82db63d Change TargetInstrInfo::isMoveInstr to return source and destination sub-register indices as well. 
llvm-svn: 62600
 2009-01-20 19:12:24 +00:00
Devang Patel
10f2f03c68 Fix global variable's address in a DIE. 
llvm-svn: 62596
 2009-01-20 18:55:39 +00:00
Devang Patel
7f6ef3bdd6 Enable debug info for enums. 
llvm-svn: 62594
 2009-01-20 18:35:14 +00:00
Dale Johannesen
c9e6e85a38 Add an IEEE remainder function, which is not 
fully implemented yet and not used.  This is
mainly to clarify that APFloat::mod implements
C fmod, not remainder.

llvm-svn: 62593
 2009-01-20 18:35:05 +00:00
Chris Lattner
8ab719c566 improve compatibility with various versions of graphviz, patch by 
Patrick Boettcher!

llvm-svn: 62592
 2009-01-20 18:25:03 +00:00
Chris Lattner
391f04d56e Eliminate use of uint32_t to improve compatibility with cygwin 
llvm-svn: 62590
 2009-01-20 18:22:57 +00:00
Devang Patel
6bd9ebdef8 Enable debug info for composite types. 
llvm-svn: 62589
 2009-01-20 18:13:03 +00:00
Evan Cheng
58488a481f Refactor code. No functionality change. 
llvm-svn: 62573
 2009-01-20 06:44:16 +00:00
Bill Wendling
5685c90e04 Shift types need to match. 
llvm-svn: 62571
 2009-01-20 06:10:42 +00:00
Chris Lattner
6ade48fcaa another fix for PR3354 
llvm-svn: 62561
 2009-01-20 01:15:41 +00:00
Dan Gohman
7663e08915 Add a README entry noticed while investigating PR3216. 
llvm-svn: 62558
 2009-01-20 01:07:33 +00:00
Dan Gohman
ff4c4ab39f Fix a dagcombine to not generate loads of non-round integer types, 
as its comment says, even in the case where it will be generating
extending loads. This fixes PR3216.

llvm-svn: 62557
 2009-01-20 01:06:45 +00:00
Devang Patel
6a88f8849b Do not use DenseMap because the iterator is invalidated while constructing types. After all there was a reason why std::map was used initially! 
llvm-svn: 62555
 2009-01-20 00:58:55 +00:00
Nick Lewycky
6ef90b1a25 Make the Interpreter use libffi if it's available. Patch from Alexei Svitkine! 
This requires a rebuild of 'configure' itself. I will be committing that next, but
built with the wrong version of autoconf. Somebody who has the right one, please update
it.

As a side-note, because of the way autoconf works, all built tools will link against
libffi, not just lli. If you know how to fix this, please let me know ...

llvm-svn: 62553
 2009-01-20 00:51:40 +00:00
Evan Cheng
5ee5ba12be Make linear scan's trivial coalescer slightly more aggressive. 
llvm-svn: 62547
 2009-01-20 00:16:18 +00:00
Bill Wendling
5281f4fb64 Doxygen-ify comments. 
llvm-svn: 62546
 2009-01-19 23:43:56 +00:00
Devang Patel
7c2157602d Verify debug info. 
llvm-svn: 62545
 2009-01-19 23:21:49 +00:00
Chris Lattner
e8fa6f2468 Fix a problem exposed by PR3354: simplifycfg was making a potentially 
trapping instruction be executed unconditionally.

llvm-svn: 62541
 2009-01-19 23:03:13 +00:00
Dan Gohman
02b5657666 Remove SDNode's virtual destructor. This makes it impossible for 
SDNode subclasses to keep state that requires non-trivial
destructors, however it was already effectively impossible,
since the destructor isn't actually ever called. There currently
aren't any SDNode subclasses affected by this, and in general
it's desireable to keep SDNode objects light-weight.

This eliminates the last virtual member function in the SDNode
class, so it eliminates the need for a vtable pointer, making
SDNode smaller.

llvm-svn: 62539
 2009-01-19 22:39:36 +00:00
Chris Lattner
45a7b5ce57 improve compatibility with cygwin, patch by Jay Foad! 
llvm-svn: 62535
 2009-01-19 22:00:18 +00:00
Chris Lattner
8c8234435a div/rem by zero and div/rem overflow are both undefined according to 
langref.  Constant fold them to undef instead of trying to preserve
the trap.  This fixes PR3354.

llvm-svn: 62534
 2009-01-19 21:55:26 +00:00
Dan Gohman
af4e583c93 Fix SelectionDAG::ReplaceAllUsesWith to behave correctly when 
uses are added to the From node while it is processing From's
use list, because of automatic local CSE. The fix is to avoid
visiting any new uses.

Fix a few places in the DAGCombiner that assumed that after
a RAUW call, the From node has no users and may be deleted.

This fixes PR3018.

llvm-svn: 62533
 2009-01-19 21:44:21 +00:00
Chris Lattner
b88febb5cd Fix PR3353, infinitely jump threading an infinite loop make from switches. 
llvm-svn: 62529
 2009-01-19 21:20:34 +00:00
Dale Johannesen
31f3cac06b compile-time fmod was done incorrectly. PR 3316. 
llvm-svn: 62528
 2009-01-19 21:17:05 +00:00
Devang Patel
50ac518b6c Verify Intrinsic::dbg_declare. 
llvm-svn: 62526
 2009-01-19 21:00:48 +00:00
Evan Cheng
06cfade044 DIVREM isel deficiency: If sign bit is known zero, zero out DX/EDX/RDX instead of sign extending the low part (in AX/EAX/RAX) into it. 
llvm-svn: 62519
 2009-01-19 19:06:11 +00:00
Evan Cheng
3c00875658 Fix 80 col violations. 
llvm-svn: 62518
 2009-01-19 18:57:29 +00:00
Evan Cheng
2f50b49f22 Handle ISD::DECLARE with PIC relocation model. 
llvm-svn: 62516
 2009-01-19 18:31:51 +00:00
Nick Lewycky
b98042a414 Fix typo, sentence fragment. 
llvm-svn: 62512
 2009-01-19 17:42:33 +00:00
Bill Wendling
bf83203ae6 Temporarily revert r62487. It's causing this error during a release bootstrap of 
llvm-gcc. Most likely, it's miscompiling one of the "gen*" programs:

/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.obj/./prev-gcc/xgcc -B/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.obj/./prev-gcc/ -B/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.install/i386-apple-darwin9.6.0/bin/ -c -g -O2 -mdynamic-no-pic -DIN_GCC -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -mdynamic-no-pic -DHAVE_CONFIG_H -DGENERATOR_FILE -I. -Ibuild -I../../llvm-gcc.src/gcc -I../../llvm-gcc.src/gcc/build -I../../llvm-gcc.src/gcc/../include -I./../intl -I../../llvm-gcc.src/gcc/../libcpp/include  -I../../llvm-gcc.src/gcc/../libdecnumber -I../libdecnumber -I/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.obj/include -I/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.src/include -DENABLE_LLVM -I/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.obj/../llvm.src/include  -D_DEBUG  -D_GNU_SOURCE -D__STDC_LIMIT_MACROS -D__STDC_CONSTANT_MACROS   -o build/gencondmd.o build/gencondmd.c
../../llvm-gcc.src/gcc/config/i386/mmx.md:926: error: expected '}' before ')' token
../../llvm-gcc.src/gcc/config/i386/mmx.md:926: warning: excess elements in struct initializer
../../llvm-gcc.src/gcc/config/i386/mmx.md:926: warning: (near initialization for 'insn_conditions[4]')
../../llvm-gcc.src/gcc/config/i386/mmx.md:926: error: expected '}' before ')' token
../../llvm-gcc.src/gcc/config/i386/mmx.md:926: error: expected ',' or ';' before ')' token
../../llvm-gcc.src/gcc/config/i386/mmx.md:927: error: expected identifier or '(' before ',' token
../../llvm-gcc.src/gcc/config/i386/sse.md:3458: error: expected identifier or '(' before ',' token
...

llvm-svn: 62506
 2009-01-19 08:46:20 +00:00
Evan Cheng
a14fd26a8b Minor tweak to LowerUINT_TO_FP_i32. Bias (after scalar_to_vector) has two uses so we should make it the second source operand of ISD::OR so 2-address pass won't have to be smart about commuting. 
%reg1024<def> = MOVSDrm %reg0, 1, %reg0, <cp#0>, Mem:LD(8,8) [ConstantPool + 0]
%reg1025<def> = MOVSD2PDrr %reg1024
%reg1026<def> = MOVDI2PDIrm <fi#-1>, 1, %reg0, 0, Mem:LD(4,16) [FixedStack-1 + 0]
%reg1027<def> = ORPSrr %reg1025<kill>, %reg1026<kill>
%reg1028<def> = MOVPD2SDrr %reg1027<kill>
%reg1029<def> = SUBSDrr %reg1028<kill>, %reg1024<kill>
%reg1030<def> = CVTSD2SSrr %reg1029<kill>
MOVSSmr <fi#0>, 1, %reg0, 0, %reg1030<kill>, Mem:ST(4,4) [FixedStack0 + 0]
%reg1031<def> = LD_Fp32m80 <fi#0>, 1, %reg0, 0, Mem:LD(4,16) [FixedStack0 + 0]
RET %reg1031<kill>, %ST0<imp-use,kill>

The reason 2-addr pass isn't smart enough to commute the ORPSrr is because it can't look pass the MOVSD2PDrr instruction.

llvm-svn: 62505
 2009-01-19 08:19:57 +00:00
Evan Cheng
53e83a2eb9 Now not UINT_TO_FP is legal (it's marked custom), dag combiner won't 
optimize it to a SINT_TO_FP when the sign bit is known zero. X86 isel should perform the optimization itself.

llvm-svn: 62504
 2009-01-19 08:08:22 +00:00
Chris Lattner
bb76cc9447 Fix PR3016, a bug which can occur do to an invalid assumption: 
we assumed a CFG structure that would be valid when all code in 
the function is reachable, but not all code is necessarily 
reachable.  Do a simple, but horrible, CFG walk to check for this
case.

llvm-svn: 62487
 2009-01-19 02:46:28 +00:00
Chris Lattner
af6f58bbf4 reduce indentation by using 'continue', no functionality change. 
llvm-svn: 62477
 2009-01-19 02:07:32 +00:00
Chris Lattner
c03b442e54 Fix some problems in SpeculativelyExecuteBB. Basically, 
because of dead code, a phi could use the speculated instruction
that was not in "BB2".  Make this check explicit and tighten up 
some other corners.  This fixes PR3292.  No testcase becauase this
depends entirely on visitation order of blocks and requires a 
sequence of 8 passes to repro.

llvm-svn: 62476
 2009-01-19 00:36:37 +00:00
Chris Lattner
ead19aaccb Make this a bit more explicit about which cases need the 
check.  No functionality change.

llvm-svn: 62474
 2009-01-18 23:22:07 +00:00
Chris Lattner
6f03811071 Fix rdar://6505632, an llc crash on 483.xalancbmk 
llvm-svn: 62470
 2009-01-18 20:35:00 +00:00
Sanjiv Gupta
5a5af71ca2 Few targets like PIC16 wants libcall generation for illegal type i16. 
llvm-svn: 62467
 2009-01-18 18:25:27 +00:00
Oscar Fuentes
fae323d3f2 CMake: Add lib/Analysis/CaptureTracking.cpp 
llvm-svn: 62462
 2009-01-18 13:14:11 +00:00
Duncan Sands
ddfeabbab7 BasicAliasAnalysis and FunctionAttrs were both 
doing very similar pointer capture analysis.
Factor out the common logic.  The new version
is from FunctionAttrs since it does a better
job than the version in BasicAliasAnalysis

llvm-svn: 62461
 2009-01-18 12:19:30 +00:00
Mon P Wang
27ea1af89f Simplify extract element based on comments from Duncan Sands. 
llvm-svn: 62459
 2009-01-18 06:43:40 +00:00
Nick Lewycky
39fcb513ca Fix copy and pasted typos that prevented strtok_r, realloc, getenv, ungetc, 
putc, puts, perror, vscanf and vsscanf from getting annotations.

Add annotations for eight printf functions, memalign, pread and pwrite.

On Linux, llvm-gcc sometimes renames strdup, getc, putc, strtok_r, scanf and
sscanf. Match the alternate function names.

Fix a crash annotating opendir.

Don't mark fsetpos's second parameter as nocapture. It's supposed to be
captured.

Do mark fopen's path and mode strings as nocapture. Mark ferror as readonly,
but not fileno which may set errno.

llvm-svn: 62456
 2009-01-18 04:34:36 +00:00
Gabor Greif
6a02ecbd29 add a comment 
llvm-svn: 62436
 2009-01-18 00:27:21 +00:00
Gabor Greif
5608ce587b switch over some other methods from indices to iterators 
llvm-svn: 62430
 2009-01-17 19:46:01 +00:00
Devang Patel
4a7a53217b Remove tabs. 
llvm-svn: 62423
 2009-01-17 08:05:14 +00:00
Devang Patel
97cd6a4a7c Refactor code 
llvm-svn: 62421
 2009-01-17 08:01:33 +00:00
Bill Wendling
ce30a8cab9 Extend thi 
llvm-svn: 62415
 2009-01-17 07:40:19 +00:00
Evan Cheng
182d9c4c9f Fix MatchAddress bug that's preventing negative displacement from being folded in 64-bit mode. 
llvm-svn: 62413
 2009-01-17 07:09:27 +00:00
Devang Patel
2fc394ddfd Assign argument type to appropriate DIE. 
llvm-svn: 62412
 2009-01-17 06:57:25 +00:00
Devang Patel
24e250ee74 Remove dead code. 
llvm-svn: 62410
 2009-01-17 06:51:37 +00:00
Devang Patel
732220a09f Disable composite type debug info for now. 
llvm-svn: 62406
 2009-01-17 05:05:12 +00:00
Bill Wendling
ddd55bdfec Temporarily revert my last change. It is causing a bootstrap failure. 
llvm-svn: 62405
 2009-01-17 04:23:51 +00:00
Bill Wendling
d18c38c0f2 Implement a special algorithm for converting uint_to_fp for i32 values on 
X86. This code:

void f() {
  uint32_t x;
  float y = (float)x;
}

used to be:

     movl     %eax, -8(%ebp)
     movl     [2^52 double], -4(%ebp)
     movsd    -8(%ebp), %xmm0
     subsd    [2^52 double], %xmm0
     cvtsd2ss %xmm0, %xmm0

Is now:

   movsd        [2^52 double], %xmm0
   movsd        %xmm0, %xmm1
   movd         %ecx, %xmm2
   orps         %xmm2, %xmm1
   subsd        %xmm0, %xmm1
   cvtsd2ss     %xmm1, %xmm0

This is faster on X86. Note that there's an extra load of %xmm0 into %xmm1. That
will be fixed in a later coalescer fix.

llvm-svn: 62404
 2009-01-17 03:56:04 +00:00
Oscar Fuentes
ee36d9ce83 CMake: Add lib/Target/IA64/IA64Subtarget.cpp 
llvm-svn: 62394
 2009-01-17 01:50:32 +00:00
Gabor Greif
c379e7909b speed up iterative loop by using iterators. changes direction, but functionally equivalent 
if this works out, I'll change the others next.

llvm-svn: 62385
 2009-01-17 00:14:25 +00:00
Gabor Greif
20f36c51bd introduce typedef for complicated vector, and use it too 
llvm-svn: 62384
 2009-01-17 00:09:08 +00:00
Mon P Wang
563134282c Simplify extract element of a scalar to vector. 
llvm-svn: 62383
 2009-01-17 00:07:25 +00:00
Gabor Greif
0d0908d06a typo 
llvm-svn: 62377
 2009-01-16 23:08:50 +00:00
Evan Cheng
d7cc550900 Fix PPC ISD::Declare isel and eliminate the need for PPCTargetLowering::LowerGlobalAddress to check if isVerifiedDebugInfoDesc() is true. Given the recent changes, it would falsely return true for a lot of GlobalAddressSDNode's. 
llvm-svn: 62373
 2009-01-16 22:57:32 +00:00
Mikhail Glushenkov
b0aa02acee Support for multi-valued options in CommandLine 
Makes possible to specify options that take multiple arguments (a-la
-sectalign on Darwin). See documentation for details.

llvm-svn: 62372
 2009-01-16 22:54:19 +00:00
Dan Gohman
cb207179b1 Give IA64 a TargetSubtarget subclass, so that it can 
implement getSubtargetImpl.

llvm-svn: 62369
 2009-01-16 22:49:36 +00:00
Dan Gohman
3d0633627d Instead of adding dependence edges between terminator instructions 
and every other instruction in their blocks to keep the terminator
instructions at the end, teach the post-RA scheduler how to operate
on ranges of instructions, and exclude terminators from the range
of instructions that get scheduled.

Also, exclude mid-block labels, such as EH_LABEL instructions, and
schedule code before them separately from code after them. This
fixes problems with the post-RA scheduler moving code past
EH_LABELs.

llvm-svn: 62366
 2009-01-16 22:10:20 +00:00
Dan Gohman
9636e74701 If an anti-dependence uses a non-allocatable register, set AntiDepReg 
to 0, to ensure that the subsequent code doesn't try to break the
dependence.

llvm-svn: 62365
 2009-01-16 21:57:43 +00:00
Dan Gohman
4dc9f47c97 Use the getNode() accessor instead of accessing the Node 
member directly, which is private as of r55504.

llvm-svn: 62364
 2009-01-16 21:47:21 +00:00
Dan Gohman
733d817b4d Fix the check for an empty basic block to check for an empty SUnits 
array instead, since this is what the scheduler actually cares about.
And remove a check that is unnecessary, since it can assume that
SUnits isn't empty.

llvm-svn: 62362
 2009-01-16 21:37:14 +00:00
Chris Lattner
cfaf556999 new nodes should be added to the worklist, not old nodes. 
llvm-svn: 62359
 2009-01-16 21:15:56 +00:00
Devang Patel
9ecd23c14d Fix comments. 
llvm-svn: 62358
 2009-01-16 21:07:53 +00:00
Evan Cheng
c4d19d6e8c CreateVirtualRegisters does trivial copy coalescing. If a node def is used by a single CopyToReg, it reuses the virtual register assigned to the CopyToReg. This won't work for SDNode that is a clone or is itself cloned. Disable this optimization for those nodes or it can end up with non-SSA machine instructions. 
llvm-svn: 62356
 2009-01-16 20:57:18 +00:00
Chris Lattner
0354d30311 don't assert and die on out of range (undefined) shifts. This fixes 
PR3334.

llvm-svn: 62352
 2009-01-16 20:17:02 +00:00
Chris Lattner
5d1ed9ed1f Fix PR3335 by not turning a store to one address space into a store to another. 
llvm-svn: 62351
 2009-01-16 20:12:52 +00:00
Chris Lattner
59dfd7d4af reduce indentation by using early exits, no functionality change. 
llvm-svn: 62350
 2009-01-16 20:08:59 +00:00
Devang Patel
6f83d4b68f Use lightweight DebugInfo objects directly. 
llvm-svn: 62341
 2009-01-16 19:28:14 +00:00
Bill Wendling
c9e856fbfd Add support for non-zero __builtin_return_address values on X86. 
llvm-svn: 62338
 2009-01-16 19:25:27 +00:00
Evan Cheng
2932869ed4 Change isGVCompilationDisabled() semantics again. It should abort on any GV that's not constant whether it's "internal" or not. In a server / client environment, GV is returned in the same block of memory as code. However, the memory might not be writable. 
llvm-svn: 62336
 2009-01-16 19:14:49 +00:00
Gabor Greif
34a28dbecf use specialized accessor instead of plain getOperand(0) 
llvm-svn: 62330
 2009-01-16 18:40:27 +00:00
Devang Patel
627bb2afb9 Align source code. 
llvm-svn: 62328
 2009-01-16 18:01:58 +00:00
Dan Gohman
e4265cdbb9 Fix a "comparison between signed and unsigned integer expressions" 
warning.

llvm-svn: 62327
 2009-01-16 17:55:08 +00:00
Nick Lewycky
3f81059a01 Reinstate r60509 from Dale: 
Make the debugging dump be a full line.

llvm-svn: 62325
 2009-01-16 17:07:22 +00:00
Mikhail Glushenkov
49be18cfc6 Registry.h should not depend on CommandLine.h. 
Split Support/Registry.h into two files so that we have less to
recompile every time CommandLine.h is changed.

llvm-svn: 62312
 2009-01-16 07:02:28 +00:00
Mikhail Glushenkov
5000223556 Delete trailing whitespace. 
llvm-svn: 62307
 2009-01-16 06:53:46 +00:00
Evan Cheng
c58653bd6e ARMCompilationCallback should not save / restore vfp registers if vfp is not available. 
llvm-svn: 62299
 2009-01-16 02:16:37 +00:00
Devang Patel
434239cc4f Validate debug info values only if DwarfDebug is initialized. 
llvm-svn: 62298
 2009-01-16 02:15:14 +00:00
Evan Cheng
e7c9310d1b Clean up previous cast optimization a bit. Also make zext elimination a bit more aggressive: if it's not necessary to emit an AND (i.e. high bits are already zero), it's profitable to evaluate the operand at a different type. 
llvm-svn: 62297
 2009-01-16 02:11:43 +00:00
Devang Patel
befef54e67 Any debug info symbol is only valid if atleast one compile unit is seen. 
llvm-svn: 62294
 2009-01-16 01:49:46 +00:00
Dan Gohman
c5b1dbdb4e Initial hazard recognizer support in post-pass scheduling. This includes 
a new toy hazard recognizier heuristic which attempts to direct the
scheduler to avoid clumping large groups of loads or stores too densely.

llvm-svn: 62291
 2009-01-16 01:33:36 +00:00