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Author SHA1 Message Date
Bill Wendling
4a86875529 Generate these labels when we're in "fast" mode, not simply when we're no in 
"optimize-for-size" mode.

llvm-svn: 65064
 2009-02-19 21:12:54 +00:00
Dan Gohman
eb7aa11e26 Use DEBUG() instead of passing *DOUT to WriteAsOperand, 
since the latter just passes a null reference when
debugging is not enabled.

llvm-svn: 65060
 2009-02-19 19:32:06 +00:00
Dan Gohman
9c41f5e046 Make the debug output of LSR less cryptic and more informative. 
llvm-svn: 65057
 2009-02-19 19:23:27 +00:00
Chris Lattner
2683c5bc9a If an executable is run through a symlink, dladdr will return the 
symlink.  We really want the ultimate executable being run, not
the symlink.  This lets clang find its headers when invoked through
a symlink. rdar://6602012

llvm-svn: 65017
 2009-02-19 05:34:35 +00:00
Dan Gohman
e7a4098f7a Fix the logic in this assertion to properly validate the number 
of arguments.

llvm-svn: 64999
 2009-02-19 02:55:18 +00:00
Dan Gohman
d4a9fb3478 Reapply r57340. VMKit does not presently rely on materializeFunction 
being called with the lock released, and this fixes a race condition
in the JIT as used by lli.

llvm-svn: 64997
 2009-02-19 02:40:15 +00:00
Bill Wendling
306b992133 Put code that generates debug labels into TableGen so that it can be used by 
everyone.

llvm-svn: 64978
 2009-02-18 23:12:06 +00:00
Chris Lattner
fc11ee35c5 add proper asmwriter and asmparser support for anonymous functions. 
llvm-svn: 64953
 2009-02-18 21:48:13 +00:00
Duncan Sands
d1fef83598 In theory the aliasee may have dead constant users 
here.  Since we only do the transform if there is
one use, strip off any such users in the hope of
making the transform fire more often.

llvm-svn: 64926
 2009-02-18 17:55:38 +00:00
Devang Patel
bf7153b721 The subprogram die may not exist while creating "default" scope. 
llvm-svn: 64920
 2009-02-18 17:29:38 +00:00
Dan Gohman
451474da4a Use a sign-extend instead of a zero-extend when promoting a 
trip count value when the original loop iteration condition is
signed and the canonical induction variable won't undergo signed
overflow. This isn't required for correctness; it just preserves
more information about original loop iteration values.

Add a getTruncateOrSignExtend method to ScalarEvolution,
following getTruncateOrZeroExtend.

llvm-svn: 64918
 2009-02-18 17:22:41 +00:00
Dan Gohman
5530918aff Simplify by using dyn_cast instead of isa and cast. 
llvm-svn: 64917
 2009-02-18 16:54:33 +00:00
Dan Gohman
30770ee7b3 Add explicit keywords. 
llvm-svn: 64915
 2009-02-18 16:37:45 +00:00
Nate Begeman
5e78e558ff Add support to the JIT for true non-lazy operation. When a call to a function 
that has not been JIT'd yet, the callee is put on a list of pending functions
to JIT.  The call is directed through a stub, which is updated with the address
of the function after it has been JIT'd.  A new interface for allocating and
updating empty stubs is provided.

Add support for removing the ModuleProvider the JIT was created with, which
would otherwise invalidate the JIT's PassManager, which is initialized with the
ModuleProvider's Module.

Add support under a new ExecutionEngine flag for emitting the infomration 
necessary to update Function and GlobalVariable stubs after JITing them, by
recording the address of the stub and the name of the GlobalValue.  This allows
code to be copied from one address space to another, where libraries may live
at different virtual addresses, and have the stubs updated with their new
correct target addresses.

llvm-svn: 64906
 2009-02-18 08:31:02 +00:00
Dan Gohman
9c258bd2ec Factor out the code to add a MachineOperand to a MachineInstrBuilder. 
llvm-svn: 64891
 2009-02-18 05:45:50 +00:00
Dan Gohman
0e73582689 Eliminate several more unnecessary intptr_t casts. 
llvm-svn: 64888
 2009-02-18 05:09:16 +00:00
Evan Cheng
bd63a1f40d GV with null value initializer shouldn't go to BSS if it's meant for a mergeable strings section. Currently it only checks for Darwin. Someone else please check if it should apply to other targets as well. 
llvm-svn: 64877
 2009-02-18 02:19:52 +00:00
Dan Gohman
3fc2e67140 Fix a corner case in the new indvars promotion logic: if there 
are multiple IV's in a loop, some of them may under go signed
or unsigned wrapping even if the IV that's used in the loop
exit condition doesn't. Restrict sign-extension-elimination
and zero-extension-elimination to only those that operate on
the original loop-controlling IV.

llvm-svn: 64866
 2009-02-18 00:52:00 +00:00
Dan Gohman
4f0fccdf9b Fix a typo in a comment. 
llvm-svn: 64859
 2009-02-18 00:08:39 +00:00
Duncan Sands
e605b83258 If an alias is dead and so is its aliasee, then globaldce would 
crash because the alias would still be using the aliasee when the
aliasee was deleted.

llvm-svn: 64844
 2009-02-17 23:05:26 +00:00
Devang Patel
25f2741ae9 The debugger sometimes lookup dynamically in the runtime to find ivar info of any Objective-C classes. It would be very helpful to debugger if the compiler encodes runtime version number in DWARF. 
Add support for two additional DWARF attributes to encode Objective-C runtime version number.

llvm-svn: 64834
 2009-02-17 22:43:44 +00:00
Scott Michel
4c5fa6c982 Remove trailing whitespace to reduce later commit patch noise. 
(Note: Eventually, commits like this will be handled via a pre-commit hook that
 does this automagically, as well as expand tabs to spaces and look for 80-col
 violations.)

llvm-svn: 64827
 2009-02-17 22:15:04 +00:00
Devang Patel
1d4e0292fb Emit debug info for bitfields. 
llvm-svn: 64815
 2009-02-17 21:23:59 +00:00
Dan Gohman
ced54f0173 LoopIndexSplit doesn't actually use ScalarEvolution. 
llvm-svn: 64811
 2009-02-17 20:50:11 +00:00
Dan Gohman
59b08852dc Add a method to ScalarEvolution for telling it when a loop has been 
modified in a way that may effect the trip count calculation. Change
IndVars to use this method when it rewrites pointer or floating-point
induction variables instead of using a doInitialization method to
sneak these changes in before ScalarEvolution has a chance to see
the loop. This eliminates the need for LoopPass to depend on
ScalarEvolution.

llvm-svn: 64810
 2009-02-17 20:49:49 +00:00
Chris Lattner
0837686a2a commit a tweaked version of Daniel's patch for PR3599. We now 
eliminate all the extensions and all but the one required truncate
from the testcase, but the or/and/shift stuff still isn't zapped.

llvm-svn: 64809
 2009-02-17 20:47:23 +00:00
Dan Gohman
c99426d513 Move dumpPassStructure out of line. 
llvm-svn: 64796
 2009-02-17 19:41:26 +00:00
Dan Gohman
72f656f2ef Delete trailing whitespace. 
llvm-svn: 64784
 2009-02-17 19:13:57 +00:00
Duncan Sands
c0436287c2 This transform also applies to private linkage. 
llvm-svn: 64773
 2009-02-17 17:50:04 +00:00
Dan Gohman
07418e014e Fix 80-column violation. 
llvm-svn: 64766
 2009-02-17 15:57:39 +00:00
Evan Cheng
2e0cf05ad2 A couple of places where reused use operands should be marked kill. This is exposed by recent availability fallthrough changes. 
llvm-svn: 64745
 2009-02-17 06:41:03 +00:00
Chris Lattner
3b67310686 add a horrible note 
llvm-svn: 64719
 2009-02-17 01:16:14 +00:00
Bill Wendling
266c8bc98f --- Merging (from foreign repository) r64714 into '.': 
U    include/llvm/CodeGen/DebugLoc.h
U    lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
U    lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp
U    lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.cpp

Enable debug location generation at -Os. This goes with the reapplication of the
r63639 patch.

llvm-svn: 64715
 2009-02-17 01:04:54 +00:00
Evan Cheng
9a8e419015 Strengthen the "non-constant stride must dominate loop preheader" check. 
llvm-svn: 64703
 2009-02-17 00:13:06 +00:00
Dan Gohman
36c8002915 Simplify; fix some 80-column violations. 
llvm-svn: 64702
 2009-02-17 00:10:53 +00:00
Dan Gohman
f23a24ce3d Delete trailing whitespace. 
llvm-svn: 64694
 2009-02-16 23:14:14 +00:00
Dan Gohman
e06ea828a2 Fix EnforceKnownAlignment so that it doesn't ever reduce the alignment 
of an alloca or global variable.

llvm-svn: 64693
 2009-02-16 23:02:21 +00:00
Nick Lewycky
6feb7523b8 Fix typo caused by too much surfing, dudes... 
llvm-svn: 64626
 2009-02-16 04:26:53 +00:00
Dan Gohman
47a6dc9ad1 Delete this long-commented-out code. The situation it seems to have 
been written for is no longer relevant with the elimination of
signed and unsigned types.

llvm-svn: 64625
 2009-02-16 02:57:42 +00:00
Dan Gohman
3d93bc5654 Change these tests to use regular loads instead of llvm.x86.sse2.loadu.dq. 
Enhance instcombine to use the preferred field of
GetOrEnforceKnownAlignment in more cases, so that regular IR operations are
optimized in the same way that the intrinsics currently are.

llvm-svn: 64623
 2009-02-16 00:44:23 +00:00
Dan Gohman
c47d143107 Don't assume that a left-shift of a value with one bit set will have 
one bit set, because the bit may be shifted off the end. Instead,
just check for a constant 1 being shifted. This is still sufficient
to handle all the cases in test/CodeGen/X86/bt.ll. This fixes PR3583.

llvm-svn: 64622
 2009-02-15 23:59:32 +00:00
Dan Gohman
856736a187 MachineLICM now handles these cases. 
llvm-svn: 64620
 2009-02-15 23:24:52 +00:00
Nick Lewycky
9178be6059 Update the list of function annotations for nocapture. All of these came up 
when I was looking at functions used by python.

Highlights include, better largefile support (64-bit file sizes on 32-bit
systems), fputs string is nocapture, popen/pclose added (popen being noalias
return), modf and frexp and friends. Also added some missing 'break' statements
and combined identical sections.

llvm-svn: 64615
 2009-02-15 22:47:25 +00:00
Nicolas Geoffray
93eebdfcc7 On 64bit we may have a personality function which requires 64 bits to 
be encoded.

llvm-svn: 64600
 2009-02-15 20:49:23 +00:00
Duncan Sands
6c1ce1dbd5 Make this more useful for cleaning up after the 
one-definition-rule llvm-gcc changes (coming soon
to a tree near you!).

llvm-svn: 64588
 2009-02-15 11:54:49 +00:00
Duncan Sands
0e6fcb078c If the target of an alias has internal linkage, then the 
alias can be morphed into the target.  Implement this
transform, and fix a crash in the existing transform at
the same time.

llvm-svn: 64583
 2009-02-15 09:56:08 +00:00
Evan Cheng
9428fd271c Fix PR3522. It's not safe to sink into landing pad BB's. 
llvm-svn: 64582
 2009-02-15 08:36:12 +00:00
Evan Cheng
02d9156a8d Fix pr3571: If stride is a value defined by an instruction, make sure it dominates the loop preheader. When IV users are strength reduced, the stride is inserted into the preheader. It could create a use before def situation. 
llvm-svn: 64579
 2009-02-15 06:06:15 +00:00
Evan Cheng
e0558412a4 ifdef out unneeded if statement. 
llvm-svn: 64575
 2009-02-15 03:20:37 +00:00
Mikhail Glushenkov
5310c3cd6e Fix warning on gcc 4.3. 
"system() declared with attribute warn_unused_result."

llvm-svn: 64574
 2009-02-15 03:20:32 +00:00
Mikhail Glushenkov
95811401b0 Whitespace fixes. 
llvm-svn: 64573
 2009-02-15 03:20:03 +00:00
Cedric Venet
48be6b5e15 Unbreak the build on win32. 
Cleanup some warning.

Remark: when struct/class are declared differently than they are defined, this make problem for VC++ since it seems to mangle class differently that struct. These error are very hard to understand and find. So please, try to keep your definition/declaration in sync.

Only tested with VS2008. hope it does not break anything. feel free to revert.

llvm-svn: 64554
 2009-02-14 16:06:42 +00:00
Duncan Sands
5aeb9b727a Generalize some alias analysis logic from atomic 
intrinsics to any IntrWriteArgMem intrinsics.

llvm-svn: 64551
 2009-02-14 10:56:35 +00:00
Dan Gohman
684359ea96 The x86-64 red zone is now being used. 
llvm-svn: 64535
 2009-02-14 03:30:05 +00:00
Dan Gohman
3695fd42a9 Extend the IndVarSimplify support for promoting induction variables: 
- Test for signed and unsigned wrapping conditions, instead of just
   testing for non-negative induction ranges. 
 - Handle loops with GT comparisons, in addition to LT comparisons.
 - Support more cases of induction variables that don't start at 0.

llvm-svn: 64532
 2009-02-14 02:31:09 +00:00
Dan Gohman
928d619b5e Clarify debug output. 
llvm-svn: 64531
 2009-02-14 02:26:50 +00:00
Dan Gohman
bd231d2e7b Simplify some code. hasComputableLoopEvolution is overkill in this case. 
No functionality change.

llvm-svn: 64530
 2009-02-14 02:25:19 +00:00
Evan Cheng
9041a71923 Teach x86 target -soft-float. 
llvm-svn: 64496
 2009-02-13 22:36:38 +00:00
Dan Gohman
f01c6af944 In CodeGenPrepare's debug output, use WriteAsOperand instead of 
printing getName(), so that unnamed values are printed correctly.

llvm-svn: 64468
 2009-02-13 17:45:12 +00:00
Dan Gohman
484ce19297 Complete the sentance in this comment. I have reservations 
about the code it describes, but at least now the comment
is right.

llvm-svn: 64465
 2009-02-13 17:36:42 +00:00
Duncan Sands
5ce9ceee04 If a function only reads memory, then we know that... 
it only reads memory!  The other change has no
functional effect, it just seems more logical to
go in order of decreasing knowledge.

llvm-svn: 64463
 2009-02-13 17:32:26 +00:00
Nick Lewycky
0a8e13fd8b Mark strto* as readonly when the endptr is null. 
llvm-svn: 64460
 2009-02-13 17:08:33 +00:00
Nick Lewycky
7ec551cfad On strtod and friends, mark 'endptr' nocapture in the function prototype, and 
mark the first argument nocapture if endptr=NULL for each particular call.

llvm-svn: 64453
 2009-02-13 15:31:46 +00:00
Duncan Sands
ed1ea7cfe8 Reapply r64301. These uses of "inline" can cause strange 
link-time failures when building with optimization.  Just
get rid of them.

llvm-svn: 64449
 2009-02-13 09:42:34 +00:00
Evan Cheng
ec9d3c889f Switch from new[] + delete[] to malloc + free since llvm does not catch C++ exceptions. 
llvm-svn: 64448
 2009-02-13 08:24:55 +00:00
Evan Cheng
643730a194 If new[] fails, return 0 rather then trying to dereference a null pointer. 
llvm-svn: 64444
 2009-02-13 07:54:34 +00:00
Nick Lewycky
260e80bd90 Reapply r64300: 
Make sure the SCC pass manager initializes any contained
function pass managers.  Without this, simplify-libcalls
would add nocapture attributes when run on its own, but
not when run as part of -std-compile-opts or similar.

llvm-svn: 64443
 2009-02-13 07:15:53 +00:00
Nick Lewycky
f6c8dc0825 BasicAA was making the assumption that a local allocation which hadn't escaped 
couldn't ever be the return of call instruction. However, it's quite possible
that said local allocation is itself the return of a function call. That's
what malloc and calloc are for, actually.

llvm-svn: 64442
 2009-02-13 07:06:27 +00:00
Dan Gohman
aec5be6b01 Fix the code that checked if a SCEVAddRecExpr Start contains an 
addrec in a different loop to check the value being added to
the accumulated Start value, not the Start value before it has
the new value added to it. This prevents LSR from going crazy
on the included testcase. Dale, please review.

llvm-svn: 64440
 2009-02-13 03:58:31 +00:00
Dale Johannesen
329e01b91b Remove non-DebugLoc versions of BuildMI from IA64, Mips. 
llvm-svn: 64438
 2009-02-13 02:34:39 +00:00
Dale Johannesen
560b03bbcd Remove non-DebugLoc versions of BuildMI from X86. 
There were some that might even matter in X86FastISel.

llvm-svn: 64437
 2009-02-13 02:33:27 +00:00
Dale Johannesen
0336a2cfd0 missed file 
llvm-svn: 64436
 2009-02-13 02:32:04 +00:00
Dale Johannesen
bf9e91b0b9 Remove non-DebugLoc versions of buildMI from Sparc. 
llvm-svn: 64435
 2009-02-13 02:31:35 +00:00
Dale Johannesen
a0069695df Remove non-DebugLoc versions of BuildMI from Alpha and Cell. 
llvm-svn: 64433
 2009-02-13 02:30:42 +00:00
Dale Johannesen
9c596981ed Remove refs to non-DebugLoc version of BuildMI from XCore, PIC16. 
llvm-svn: 64432
 2009-02-13 02:29:03 +00:00
Dale Johannesen
428a8fcc3d Remove refs to non-DebugLoc version of BuildMI from PowerPC. 
llvm-svn: 64431
 2009-02-13 02:27:39 +00:00
Dale Johannesen
986cfc3338 and one more file 
llvm-svn: 64430
 2009-02-13 02:26:21 +00:00
Dale Johannesen
a91dca7b45 Remove refs to non-DebugLoc versions of BuildMI from ARM. 
llvm-svn: 64429
 2009-02-13 02:25:56 +00:00
Bill Wendling
40e4b271af Revert this. It was breaking stuff. 
llvm-svn: 64428
 2009-02-13 02:16:35 +00:00
Bill Wendling
83b6edd760 Turn off the old way of handling debug information in the code generator. Use 
the new way, where all of the information is passed on SDNodes and machine
instructions.

llvm-svn: 64427
 2009-02-13 02:01:04 +00:00
Dan Gohman
3ade7d2346 Fix LSR's IV sorting function to explicitly sort by bitwidth 
after sorting by stride value. This prevents it from missing
IV reuse opportunities in a host-sensitive manner.

llvm-svn: 64415
 2009-02-13 00:26:43 +00:00
Dale Johannesen
df5d8dfbcb Check in missing file. 
llvm-svn: 64410
 2009-02-12 23:24:44 +00:00
Dale Johannesen
5a21722625 Eliminate a couple of non-DebugLoc BuildMI variants. 
Modify callers.

llvm-svn: 64409
 2009-02-12 23:08:38 +00:00
Dan Gohman
02d4601fcf Teach IndVarSimplify to optimize code using the C "int" type for 
loop induction on LP64 targets. When the induction variable is
used in addressing, IndVars now is usually able to inserst a
64-bit induction variable and eliminates the sign-extending cast.
This is also useful for code using C "short" types for
induction variables on targets with 32-bit addressing.

Inserting a wider induction variable is easy; the tricky part is
determining when trunc(sext(i)) expressions are no-ops. This
requires range analysis of the loop trip count. A common case is
when the original loop iteration starts at 0 and exits when the
induction variable is signed-less-than a fixed value; this case
is now handled.

This replaces IndVarSimplify's OptimizeCanonicalIVType. It was
doing the same optimization, but it was limited to loops with
constant trip counts, because it was running after the loop
rewrite, and the information about the original induction
variable is lost by that point.

Rename ScalarEvolution's executesAtLeastOnce to
isLoopGuardedByCond, generalize it to be able to test for
ICMP_NE conditions, and move it to be a public function so that
IndVars can use it.

llvm-svn: 64407
 2009-02-12 22:19:27 +00:00
Nate Begeman
8b548c0a9e Add suppport for ConstantExprs of shufflevectors whose result type is not equal to the 
type of the vectors being shuffled.

llvm-svn: 64401
 2009-02-12 21:28:33 +00:00
Dale Johannesen
47321cf01f Arrange to print constants that match "n" and "i" constraints 
in inline asm as signed (what gcc does).  Add partial support
for x86-specific "e" and "Z" constraints, with appropriate
signedness for printing.

llvm-svn: 64400
 2009-02-12 20:58:09 +00:00
Dan Gohman
f74d17b36a Add a utility function to LoopInfo to return the exit block 
when the loop has exactly one exit, and make use of it in
LoopIndexSplit.

llvm-svn: 64388
 2009-02-12 18:08:24 +00:00
Chris Lattner
c1488eea4b fix PR3538 for ARM. 
llvm-svn: 64384
 2009-02-12 17:38:23 +00:00
Chris Lattner
aeec838015 fix PR3538 for PPC 
llvm-svn: 64383
 2009-02-12 17:37:15 +00:00
Chris Lattner
1174b80823 fix the X86 backend to just drop llvm.declare nodes for VLAs instead of 
leaving them in the DAG and then getting selection errors.  This is a 
fix for PR3538.

llvm-svn: 64382
 2009-02-12 17:33:11 +00:00
Dan Gohman
3c296f6bd0 Adjust the sizes for a few SmallVectors to reflect their usage. 
llvm-svn: 64381
 2009-02-12 17:29:01 +00:00
Chris Lattner
4e2ed3e5e7 make fast isel fall back to selectiondags for VLA llvm.declare intrinsics. 
llvm-svn: 64379
 2009-02-12 17:23:20 +00:00
Dan Gohman
faf109b851 This code doesn't actually use the ExitingBlocks list. 
llvm-svn: 64376
 2009-02-12 16:36:26 +00:00
Evan Cheng
91c27ec711 It's (currently) not safe to keep certain physical registers live across basic blocks, e.g. x86 fp stack registers. 
llvm-svn: 64374
 2009-02-12 10:32:17 +00:00
Evan Cheng
521b8b5ef3 Oops. Last second clean up messed things up. 
llvm-svn: 64373
 2009-02-12 09:52:13 +00:00
Evan Cheng
04558ecc90 If availability info is kept when fallthrough into a bb, add the available registers to live-in set. 
llvm-svn: 64372
 2009-02-12 09:43:23 +00:00
Evan Cheng
19a1ba3680 Replace one of burr scheduling heuristic with something more sensible. Now calcMaxScratches simply compute the number of true data dependencies. This actually improve a couple of tests in dejagnu suite as many tests in llvm nightly test suite. 
llvm-svn: 64369
 2009-02-12 08:59:45 +00:00
Julien Lerouge
37d198e8f9 Fix MingW build, patch by Kenneth Boyd! 
llvm-svn: 64366
 2009-02-12 07:39:10 +00:00
Chris Lattner
5babade39e Fix a nasty bug (PR3550) where the inline pass could incorrectly mark 
calls with the tail marker when inlining them through an invoke.  Patch,
testcase, and perfect analysis by Jay Foad!

llvm-svn: 64364
 2009-02-12 07:06:42 +00:00
Chris Lattner
d093b49b81 improve naming of values in GVN, patch by Jay Foad! 
llvm-svn: 64363
 2009-02-12 07:00:35 +00:00
Chris Lattner
e5ec807aaf fix PR3537: if resetting bbi back to the start of a block, we need to 
forget about already inserted expressions.

llvm-svn: 64362
 2009-02-12 06:56:08 +00:00
Nick Lewycky
1a40fb2473 Don't mark all args to strtod and friends as nocapture. 
llvm-svn: 64352
 2009-02-12 03:18:34 +00:00
Bill Wendling
d31cb3d5aa Move debug loc info along when the spiller creates new instructions. 
llvm-svn: 64342
 2009-02-12 00:02:55 +00:00
Evan Cheng
66989a9108 Apparently some MachineBasicBlock's don't have corresponding llvm basic blocks. 
llvm-svn: 64340
 2009-02-11 23:42:39 +00:00
Evan Cheng
a34255f910 Remove a bogus assertion. It's possible a live-in available value is used by a previous instruction. 
llvm-svn: 64339
 2009-02-11 23:41:57 +00:00
Nate Begeman
9b68eff12e the two non-mask arguments to a shufflevector must be the same width, but they do not have to be the same 
width as the result value.

llvm-svn: 64335
 2009-02-11 22:36:25 +00:00
Bill Wendling
49baa5465c Propagate DebugLoc info for spiller call-backs. 
llvm-svn: 64329
 2009-02-11 21:51:19 +00:00
Dan Gohman
c4f5d4d35d Fix a comment. 
llvm-svn: 64328
 2009-02-11 21:32:08 +00:00
Dan Gohman
d252329703 Don't use special heuristics for nodes with no data predecessors 
unless they actually have data successors, and likewise for nodes
with no data successors unless they actually have data precessors.

llvm-svn: 64327
 2009-02-11 21:29:39 +00:00
Dan Gohman
35db81715f Delete the heuristic for non-livein CopyFromReg nodes. Non-liveinness 
is determined by whether the node has a Flag operand. However, if the
node does have a Flag operand, it will be glued to its register's
def, so the heuristic would end up spuriously applying to whatever
node is the def.

llvm-svn: 64319
 2009-02-11 20:25:59 +00:00
Dan Gohman
2decb4495d Don't try to set an EFLAGS operand to dead if no instruction was created. 
This fixes a bug introduced by r61215.

llvm-svn: 64316
 2009-02-11 19:50:24 +00:00
Dale Johannesen
f367ef04af Make a transformation added in 63266 a bit less aggressive. 
It was transforming (x&y)==y to (x&y)!=0 in the case where
y is variable and known to have at most one bit set (e.g. z&1).
This is not correct; the expressions are not equivalent when y==0.
I believe this patch salvages what can be salvaged, including
all the cases in bt.ll.  Dan, please review.
Fixes gcc.c-torture/execute/20040709-[12].c

llvm-svn: 64314
 2009-02-11 19:19:41 +00:00
Bill Wendling
dfb5880317 Revert r64300 and r64301. These were causing the following errors respectively: 
During llvm-gcc bootstrap:

Undefined symbols:
  "llvm::FPPassManager::doFinalization(llvm::Module&)", referenced from:
      (anonymous namespace)::CGPassManager::doFinalization(llvm::CallGraph&, llvm::Module&)
        in libLLVMipa.a(CallGraphSCCPass.o)
  "llvm::FPPassManager::doInitialization(llvm::Module&)", referenced from:
      (anonymous namespace)::CGPassManager::doInitialization(llvm::CallGraph&, llvm::Module&)
        in libLLVMipa.a(CallGraphSCCPass.o)
ld: symbol(s) not found
collect2: ld returned 1 exit status
make[3]: *** [/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore.roots/llvmCore~obj/obj-llvm/Release/bin/opt] Error 1

During an LLVM release build:

/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.sh.build/Release/bin/tblgen -I  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/lib/Target/X86 -I  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/include -I  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/include -I  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/lib/Target -gen-register-desc -o  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.sh.build/lib/Target/X86/Release/X86GenRegisterInfo.inc.tmp /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/lib/Target/X86/X86.td
llvm[3]: Building X86.td instruction names with tblgen
/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.sh.build/Release/bin/tblgen -I  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/lib/Target/X86 -I  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/include -I  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/include -I  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/lib/Target -gen-instr-enums -o  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.sh.build/lib/Target/X86/Release/X86GenInstrNames.inc.tmp /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/lib/Target/X86/X86.td
llvm[3]: Building X86.td instruction information with tblgen
/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.sh.build/Release/bin/tblgen -I  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/lib/Target/X86 -I  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/include -I  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/include -I  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/lib/Target -gen-instr-desc -o  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.sh.build/lib/Target/X86/Release/X86GenInstrInfo.inc.tmp /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/lib/Target/X86/X86.td
llvm[3]: Building X86.td assembly writer with tblgen
/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.sh.build/Release/bin/tblgen -I  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/lib/Target/X86 -I  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/include -I  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/include -I  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/lib/Target -gen-asm-writer -o  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.sh.build/lib/Target/X86/Release/X86GenAsmWriter.inc.tmp /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/lib/Target/X86/X86.td
llvm[3]: Compiling InstructionCombining.cpp for Release build 
if /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmgcc42.roots/llvmgcc42~dst/Developer/usr/bin/llvm-g++-4.2 -I/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.sh.build/include -I/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.sh.build/lib/Transforms/Scalar -I/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/include -I/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/lib/Transforms/Scalar  -D_DEBUG  -D_GNU_SOURCE -D__STDC_LIMIT_MACROS -D__STDC_CONSTANT_MACROS -O3  -fno-exceptions  -Woverloaded-virtual -pedantic -Wall -W -Wwrite-strings -Wno-long-long -Wunused -Wno-unused-parameter  -fstrict-aliasing -Wstrict-aliasing -c -MMD -MP -MF "/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.sh.build/lib/Transforms/Scalar/Release/InstructionCombining.d.tmp" -MT "/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.sh.build/lib/Transforms/Scalar/Release/InstructionCombining.lo" -MT "/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.sh.build/lib/Transforms/Scalar/Release/InstructionCombining.o" -MT "/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.sh.build/lib/Transforms/Scalar/Release/InstructionCombining.d" /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/lib/Transforms/Scalar/InstructionCombining.cpp -o /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.sh.build/lib/Transforms/Scalar/Release/InstructionCombining.o ; \
           then /bin/mv -f "/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.sh.build/lib/Transforms/Scalar/Release/InstructionCombining.d.tmp" "/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.sh.build/lib/Trans

llvm-svn: 64311
 2009-02-11 18:19:24 +00:00
Duncan Sands
4f3619a28a These uses of "inline" can cause strange link-time 
failures when building with optimization.  Just get
rid of them.

llvm-svn: 64301
 2009-02-11 12:25:15 +00:00
Duncan Sands
e71d1394f6 Make sure the SCC pass manager initializes any contained 
function pass managers.  Without this, simplify-libcalls
would add nocapture attributes when run on its own, but
not when run as part of -std-compile-opts or similar.

llvm-svn: 64300
 2009-02-11 09:58:43 +00:00
Evan Cheng
cfa084930b Implement PR3495: local spiller optimization. The local spiller can now keep availability information over BB boundaries. It visits BB's in depth first order. After visiting a BB if it find a successor which has a single predecessor it visits the successor next without clearing the availability information. This allows the successor to omit reloads or change them into copies. 
llvm-svn: 64298
 2009-02-11 08:24:21 +00:00
Dan Gohman
7e48e82adb When scheduling a block in parts, keep track of the overall 
instruction index across each part. Instruction indices are used
to make live range queries, and live ranges can extend beyond
scheduling region boundaries.

Refactor the ScheduleDAGSDNodes class some more so that it
doesn't have to worry about this additional information.

llvm-svn: 64288
 2009-02-11 04:27:20 +00:00
Devang Patel
dd611eac76 If llvm.dbg.region.end is disappearing then remove corresponding llvm.dbg.func.start also. 
llvm-svn: 64278
 2009-02-11 01:29:06 +00:00
Dan Gohman
8adedd1086 Don't print extra spaces in vector and array constants. This makes 
them visually more consistent with vector and array types.

llvm-svn: 64267
 2009-02-11 00:25:25 +00:00
Dan Gohman
d5561e2f28 Use iterators to iterate through the Preds array instead of 
an index. This code is on the hot-path because the current
way SDep edges are uniqued has quadratic complexity.

llvm-svn: 64262
 2009-02-11 00:12:28 +00:00
Dan Gohman
0da8292c67 Consider any instruction that modifies the stack pointer to be 
a scheduling region boundary.  This isn't necessary for
correctness; it helps with compile time, as it avoids the need
for data- and anti-dependencies from all spills and reloads on
the stack-pointer modification.

llvm-svn: 64255
 2009-02-10 23:29:38 +00:00
Dan Gohman
f2b9543ee5 Factor out more code for computing register live-range informationfor 
scheduling, and generalize is so that preserves state across
scheduling regions. This fixes incorrect live-range information around
terminators and labels, which are effective region boundaries.

In place of looking for terminators to anchor inter-block dependencies,
introduce special entry and exit scheduling units for this purpose.

llvm-svn: 64254
 2009-02-10 23:27:53 +00:00
Devang Patel
60571be0de Ignore dbg intrinsic while folding unconditional branch. 
llvm-svn: 64242
 2009-02-10 22:14:17 +00:00
Evan Cheng
cdb35e3f0f Handle llvm.x86.sse2.maskmov.dqu in 64-bit. 
llvm-svn: 64240
 2009-02-10 22:06:28 +00:00
Evan Cheng
a1b9cf3143 80 col violations. 
llvm-svn: 64237
 2009-02-10 21:39:44 +00:00
Devang Patel
db7596dbee Use early exits. Reduce indentation. 
llvm-svn: 64226
 2009-02-10 19:28:07 +00:00
Dan Gohman
6a9be2e4ea Use const, to support platforms where strrchr returns a const char *. 
This fixes PR3535.

llvm-svn: 64224
 2009-02-10 17:56:28 +00:00
Duncan Sands
e0f1fe111b Pacify gcc-4.3 (thinks IsConstant may be used 
uninitialized).

llvm-svn: 64220
 2009-02-10 16:24:55 +00:00
Evan Cheng
5be1afd928 Fix PR3457: Ignore control successors when looking for closest scheduled successor. A control successor doesn't read result(s) produced by the scheduling unit being evaluated. 
llvm-svn: 64210
 2009-02-10 08:30:11 +00:00
Devang Patel
6c041de2ff Do not clone llvm.dbg.func.start and corresponding llvm.dbg.region.end during inlining. 
llvm-svn: 64209
 2009-02-10 07:48:18 +00:00
Devang Patel
7377e7aa89 Enable scalar replacement of AllocaInst whose one of the user is dbg info. 
llvm-svn: 64207
 2009-02-10 07:00:59 +00:00
Devang Patel
0cb3e1c047 Validate file id. 
llvm-svn: 64204
 2009-02-10 06:04:08 +00:00
Sanjiv Gupta
abf1d4e9db Function temporaries can not overlap with retval or args.See the comment in source code to know the reason. Anything having .auto. in its name is local to a function in nature irrespective of the linkage specified. print static local variables in module level IDATA section. 
llvm-svn: 64199
 2009-02-10 04:20:26 +00:00
Evan Cheng
3b84024598 Implement FpSET_ST1_*. 
llvm-svn: 64186
 2009-02-09 23:32:07 +00:00
Evan Cheng
acd0fd545d If the target cannot issue a copy for the given source and dest registers, abort instead of silently continue. 
llvm-svn: 64184
 2009-02-09 22:47:36 +00:00
Dale Johannesen
ef9b8f0d4c Fix PR 3471, and some cleanups. 
llvm-svn: 64177
 2009-02-09 22:14:15 +00:00
Evan Cheng
773303a763 Simplify code. 
llvm-svn: 64164
 2009-02-09 21:01:06 +00:00
Evan Cheng
44e58653af Make sure constant subscript is truncated to ptr size if it may not fit. 
llvm-svn: 64163
 2009-02-09 20:54:38 +00:00
Dan Gohman
548d7c9145 Use doxygen comment syntax. 
llvm-svn: 64150
 2009-02-09 18:12:09 +00:00
Dan Gohman
b7e521e39d Use slightly more correct grammar in error messages. 
llvm-svn: 64148
 2009-02-09 17:41:21 +00:00
Gabor Greif
5de6cc843a make sure that BranchInst::getSuccessor() does not assert in cast<> 
even if the underlying operand is NULL. This may happen in debugging context
within opt with partial loop unrolling (see test/Transforms/LoopUnroll/partial.ll).
After this fix I can resubmit the (backed out) r63459:
* lib/VMCore/AsmWriter.cpp: use precise accessors.

llvm-svn: 64142
 2009-02-09 15:45:06 +00:00
Evan Cheng
3f98669da2 Re-enable machine sinking pass now that the coalescer bugs and the AnalyzeBrnach bug are fixed. 
llvm-svn: 64126
 2009-02-09 08:45:39 +00:00
Evan Cheng
2a6fc3cd40 Fix another case ShortenDeadCopySrcLiveRange is shortening too much. No test case possible since I don't know what to grep for. :-( 
llvm-svn: 64125
 2009-02-09 08:37:45 +00:00
Evan Cheng
9dc1507838 Turns out AnalyzeBranch can modify the mbb being analyzed. This is a nasty 
suprise to some callers, e.g. register coalescer. For now, add an parameter
that tells AnalyzeBranch whether it's safe to modify the mbb. A better
solution is out there, but I don't have time to deal with it right now.

llvm-svn: 64124
 2009-02-09 07:14:22 +00:00
Mikhail Glushenkov
d9f64e601f Add a Sleep() function. 
llvm-svn: 64101
 2009-02-08 22:47:39 +00:00
Mikhail Glushenkov
ef0291beda Add Emacs hints to Alarm.inc. 
Also removes some trailing whitespace and fixes one 80-column violation.

llvm-svn: 64094
 2009-02-08 21:10:57 +00:00
Chris Lattner
a50a554333 add a note. 
llvm-svn: 64093
 2009-02-08 20:44:19 +00:00
Chris Lattner
f6b4b170b6 fix typo 
llvm-svn: 64091
 2009-02-08 20:00:15 +00:00
Chris Lattner
803ee40d44 reject void pointers with a nice error: 
llvm-as: t.ll:2:15: pointers to void are invalid, use i8* instead
%X = type void*
              ^

instead of asserting and dying.

llvm-svn: 64089
 2009-02-08 19:56:22 +00:00
Evan Cheng
a7287a61fb Fix PR3486. Fix a bug in code that manually patch physical register live interval after its sub-register is coalesced with a virtual register. 
llvm-svn: 64082
 2009-02-08 11:04:35 +00:00
Evan Cheng
b5792305b3 Strengthen the previous check. 
llvm-svn: 64076
 2009-02-08 08:24:28 +00:00
Evan Cheng
d5f5c0660b r64073 commit message is lost. Here it is: 
Right now if the coalesced copy def is dead and its src is a kill, and that
there are now other uses within the live range, the coalescer would mark the
def of the source register as dead. But it should also check if there are
other kills which means the value has other uses not in the live range.

llvm-svn: 64075
 2009-02-08 08:00:36 +00:00
Evan Cheng
7d46312873 (no commit message) 
llvm-svn: 64073
 2009-02-08 07:48:37 +00:00
Bill Wendling
22173be9c5 Mistakenly turned this on. 
llvm-svn: 64065
 2009-02-08 01:32:00 +00:00
Bill Wendling
4ed0306d6f Revert r63999. It was breaking self-hosting builds. 
llvm-svn: 64062
 2009-02-08 00:58:05 +00:00
Chris Lattner
eb06f05949 Add missing break statements, fixing PR3503. 
llvm-svn: 64040
 2009-02-07 22:37:06 +00:00
Mon P Wang
028d995112 Instrcombine should not change load(cast p) to cast(load p) if the cast 
changes the address space of the pointer.

llvm-svn: 64035
 2009-02-07 22:19:29 +00:00
Dale Johannesen
b22cb23f6f Use getDebugLoc forwarder instead of getNode()->getDebugLoc. 
No functional change.

llvm-svn: 64026
 2009-02-07 19:59:05 +00:00
Dan Gohman
4105a38248 Constify TargetInstrInfo::EmitInstrWithCustomInserter, allowing 
ScheduleDAG's TLI member to use const.

llvm-svn: 64018
 2009-02-07 16:15:20 +00:00
Nick Lewycky
f273659759 Add an API for strings with possible NULLs in the middle. Refactor the other 
two AddString methods to use it.

llvm-svn: 64005
 2009-02-07 04:57:08 +00:00
Mike Stump
ea0132f5bc Insert space to avoid warning and make code more readable. 
llvm-svn: 64003
 2009-02-07 03:36:02 +00:00
Dale Johannesen
4fc8a5c0b5 Make SDNode constructors take a DebugLoc always. 
Adjust derived classes to pass UnknownLoc where
a DebugLoc does not make sense.  Pick one of
DebugLoc and non-DebugLoc variants to survive
for all such classes.

llvm-svn: 64000
 2009-02-07 02:15:05 +00:00
Evan Cheng
62694a52fe Enable machine sinking pass in non-fast mode. 
llvm-svn: 63999
 2009-02-07 01:57:46 +00:00
Dale Johannesen
71d758eead Remove now-unused constructors. 
llvm-svn: 63995
 2009-02-07 01:27:09 +00:00
Evan Cheng
cf71da05b0 Don't sink the instruction if TargetRegisterInfo::isSafeToMoveRegClassDefs doesn't think it's safe. This works around PR1911. 
llvm-svn: 63994
 2009-02-07 01:21:47 +00:00
Dale Johannesen
a068079e5f Needs this file too. 
llvm-svn: 63993
 2009-02-07 00:56:46 +00:00
Dale Johannesen
a259483aae Get rid of the last non-DebugLoc versions of getNode! 
Many targets build placeholder nodes for special operands, e.g.
GlobalBaseReg on X86 and PPC for the PIC base.  There's no
sensible way to associate debug info with these.  I've left
them built with getNode calls with explicit DebugLoc::getUnknownLoc operands. 
I'm not too happy about this but don't see a good improvement;
I considered adding a getPseudoOperand or something, but it
seems to me that'll just make it harder to read.

llvm-svn: 63992
 2009-02-07 00:55:49 +00:00
Dan Gohman
8437b9efa1 Refactor some repeated logic into a separate function. 
llvm-svn: 63989
 2009-02-07 00:43:41 +00:00
Dan Gohman
8aeae15ebd Make a comment a doxygen comment. 
llvm-svn: 63988
 2009-02-07 00:42:54 +00:00
Dale Johannesen
1580ab6b7f Remove more non-DebugLoc getNode variants. Use 
getCALLSEQ_{END,START} to permit passing no DebugLoc
there.  UNDEF doesn't logically have DebugLoc; add
getUNDEF to encapsulate this.

llvm-svn: 63978
 2009-02-06 23:05:02 +00:00
Dale Johannesen
f9268f8523 And one more file. 
llvm-svn: 63971
 2009-02-06 21:55:48 +00:00
Dale Johannesen
c405486235 Remove more non-DebugLoc versions of getNode. 
llvm-svn: 63969
 2009-02-06 21:50:26 +00:00
Bill Wendling
2c7f47d1d4 Record debug location information in the Dwarf writer. 
A simple test program shows that debugging works. :-)

llvm-svn: 63968
 2009-02-06 21:45:08 +00:00
Bill Wendling
cd6bb3e248 Clear out the CurDebugLoc info when doing a 'clear' on the SDL object. 
llvm-svn: 63967
 2009-02-06 21:36:23 +00:00
Dan Gohman
c264b63de6 Split the locking out of JIT::runJITOnFunction so that callers 
that already hold the lock can call an entry point that doesn't
re-acquire the lock.

llvm-svn: 63965
 2009-02-06 21:25:08 +00:00
Dan Gohman
a2f300f26d Use .size and .type on ELF systems; this helps tools that map 
addresses to symbols.

llvm-svn: 63962
 2009-02-06 21:15:52 +00:00
Dale Johannesen
7099fa18a4 Eliminate remaining non-DebugLoc version of getTargetNode. 
llvm-svn: 63951
 2009-02-06 19:16:40 +00:00
Dan Gohman
c097f9628e Rename SelectionDAGISel::Schedule to 
SelectionDAGISel::CreateScheduler, and make it just create the
scheduler. Leave running the scheduler to the higher-level code.
This makes the higher-level code a little more explicit and
easier to follow, and will help enable some future refactoring.

llvm-svn: 63944
 2009-02-06 18:26:51 +00:00
Sanjiv Gupta
90fd43f44d Print globl directive for variables with external linkage (global variables). 
llvm-svn: 63943
 2009-02-06 18:24:59 +00:00
Dan Gohman
2ae1006f93 Delete an unused member function. 
llvm-svn: 63941
 2009-02-06 18:19:52 +00:00
Evan Cheng
e00df1d39c Move getPointerRegClass from TargetInstrInfo to TargetRegisterInfo. 
llvm-svn: 63938
 2009-02-06 17:43:24 +00:00
Dan Gohman
5784cf7f6d Move ScheduleDAGSDNodes.h to be a private header. Front-ends 
that previously included this header should include
SchedulerRegistry.h instead.

llvm-svn: 63937
 2009-02-06 17:22:58 +00:00
Evan Cheng
381b2df5ff Add TargetInstrInfo::isSafeToMoveRegisterClassDefs. It returns true if it's safe to move an instruction which defines a value in the register class. Replace pre-splitting specific IgnoreRegisterClassBarriers with this new hook. 
llvm-svn: 63936
 2009-02-06 17:17:30 +00:00
Dan Gohman
2d402dd7cd Move ScheduleDAGInstrs.h to be a private header. Front-ends 
that used this header to select a scheduling policy should
use SchedulerRegistry.h instead (llvm-gcc and clang were
updated a while ago).

llvm-svn: 63934
 2009-02-06 17:12:10 +00:00
Devang Patel
85ae609834 Ignore DbgInfoIntrinsics. 
llvm-svn: 63923
 2009-02-06 06:19:06 +00:00
Chris Lattner
5118081112 fix PR3489, use bits instead of bytes. 
llvm-svn: 63916
 2009-02-06 04:34:07 +00:00
Dale Johannesen
cda84103ff get rid of some non-DebugLoc getTargetNode variants. 
llvm-svn: 63909
 2009-02-06 02:08:06 +00:00
Dale Johannesen
e95c76b65e Get rid of one more non-DebugLoc getNode and 
its corresponding getTargetNode.  Lots of
caller changes.

llvm-svn: 63904
 2009-02-06 01:31:28 +00:00
Owen Anderson
475c341202 Fix a crasher: we need to check that the function is non-null before using it! 
llvm-svn: 63902
 2009-02-06 00:13:43 +00:00
Owen Anderson
acbec98578 Refactor my previous change to maintain the distinction between AliasAnalysis and BasicAliasAnalysis. This involves some wider changes because it 
folds away some never-used methods.

llvm-svn: 63900
 2009-02-05 23:36:27 +00:00
Devang Patel
a6f77d01c7 Ignore dbg intrinsics while propagating conditional expression info. Take 2. 
llvm-svn: 63898
 2009-02-05 23:32:52 +00:00
Evan Cheng
6a938dd9e7 isAsCheapAsMove instructions can have register src operands. Check if they are really re-materializable. 
This fixes sse.expandfft and sse.stepfft.

llvm-svn: 63890
 2009-02-05 22:24:17 +00:00
Dale Johannesen
c96091a672 Remove a non-DebugLoc version of getNode. 
llvm-svn: 63889
 2009-02-05 22:07:54 +00:00
Devang Patel
72f5fba371 Revert rev. 63876. It is causing llvm-gcc bootstrap failure. 
llvm-svn: 63888
 2009-02-05 21:46:41 +00:00
Dale Johannesen
b218273a7a Remove 3 non-DebugLoc variants of getNode. 
llvm-svn: 63886
 2009-02-05 21:20:44 +00:00
Devang Patel
5b3fe253c5 Remove dead blocks in the end. 
llvm-svn: 63880
 2009-02-05 19:59:42 +00:00
Devang Patel
66eee02024 Ignore dbg intrinsics while propagating conditional expression info. 
llvm-svn: 63876
 2009-02-05 19:15:39 +00:00
Evan Cheng
078ac6071d Machine LICM increases register pressure and it almost always increase code size. For now, disable it for optimizing for size. 
llvm-svn: 63856
 2009-02-05 08:51:13 +00:00
Evan Cheng
b36e3e34e7 Turn on machine LICM in non-fast mode. 
llvm-svn: 63855
 2009-02-05 08:46:33 +00:00
Evan Cheng
5087dd8359 Teach machine licm to CSE hoisted instructions. 
llvm-svn: 63854
 2009-02-05 08:45:46 +00:00