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27220 Commits

Author SHA1 Message Date
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