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Author SHA1 Message Date
Nick Lewycky
8cd0f2058e Add another optimization from PR2330. Also catch some missing cases that are 
similar.

llvm-svn: 53451
 2008-07-11 07:20:53 +00:00
Bill Wendling
9f17caa9a9 The frame address on an x86-64 box needs to be offset by -8, not -4. 
llvm-svn: 53450
 2008-07-11 07:18:52 +00:00
Chris Lattner
07bfade2d4 a missed optimization that Eli spotted 
llvm-svn: 53449
 2008-07-11 06:40:29 +00:00
Chris Lattner
34b0895d4d another bug in the same line. 
llvm-svn: 53448
 2008-07-11 06:38:16 +00:00
Chris Lattner
3cdb6789b9 fix a bug spotted by Eli's eagle eyes 
llvm-svn: 53447
 2008-07-11 06:36:01 +00:00
Chris Lattner
3d40848bfd simplify and merge a bunch of code. Instead of comparing against 
the min/max values for an integer type, compare against the min/max
values we can prove contain the input.  This might be a tighter bound,
so this is general goodness.

llvm-svn: 53446
 2008-07-11 05:40:05 +00:00
Chris Lattner
d1198896ae fold away (x <= cst) earlier, allowing us to not have to 
handle them in some code.

llvm-svn: 53445
 2008-07-11 05:08:55 +00:00
Chris Lattner
16b8ae98c1 Fix folding of icmp's of i1 where the comparison is signed. The code 
was using the algorithm for folding unsigned comparisons which is
completely wrong.  This has been broken since the signless types change.

llvm-svn: 53444
 2008-07-11 04:20:58 +00:00
Chris Lattner
f3f6b6d7af Fix a bogus optimization: folding (slt (zext i1 A to i32), 1) -> (slt i1 A, true) 
This cause a regression in InstCombine/JavaCompare, which was doing the right
thing on accident.  To handle the missed case, generalize the comparisons based
on masked bits a little bit to handle comparisons against the max value. For 
example, we can now xform (slt i32 (and X, 4), 4) -> (setne i32 (and X, 4), 4)

llvm-svn: 53443
 2008-07-11 04:09:09 +00:00
Chris Lattner
43a2b1b16d make this condition more precise. 
llvm-svn: 53442
 2008-07-11 03:54:57 +00:00
Chris Lattner
20b1bde882 regenerate 
llvm-svn: 53440
 2008-07-11 00:30:39 +00:00
Chris Lattner
9dff6fbe58 Implement PR2538 
llvm-svn: 53438
 2008-07-11 00:30:06 +00:00
Chris Lattner
78d60a220b Fix a bug in the soft-float handling of FCOPYSIGN that Duncan noticed 
when working on legalizetypes.  Both legalizetypes and legalizeops now
produce hte same code for CodeGen/ARM/fcopysign.ll.

llvm-svn: 53435
 2008-07-10 23:46:13 +00:00
Chris Lattner
5e784a8ebd make legalize types be a command line option: -enable-legalize-types. 
llvm-svn: 53434
 2008-07-10 23:37:50 +00:00
Ted Kremenek
4e5efc791c Make typedef public to make MSVC++ happy. 
llvm-svn: 53433
 2008-07-10 23:24:20 +00:00
Ted Kremenek
d2eef72ae9 Make some typedefs public to make MSVC++ happy. 
llvm-svn: 53432
 2008-07-10 23:09:45 +00:00
Ted Kremenek
9bd15119cd Make typedefs in ilist public (Visual C++ errors out when they are private). 
llvm-svn: 53431
 2008-07-10 22:58:10 +00:00
Bill Wendling
7e2acf0dc9 Pull r53428 from Gaz into mainline: 
Remove warnings about unused/shadowed variables.

llvm-svn: 53430
 2008-07-10 22:57:49 +00:00
Ted Kremenek
91171c5406 Added ImmutableMap constructor that accepts a const TreeTy*. 
llvm-svn: 53429
 2008-07-10 22:57:10 +00:00
Bill Wendling
3be8dca83f Put CPPBackend tests into their own directory and run them only if they're 
supported.

llvm-svn: 53427
 2008-07-10 22:35:32 +00:00
Dan Gohman
c3f346dc55 Tidy up #includes. 
llvm-svn: 53426
 2008-07-10 22:26:19 +00:00
Dan Gohman
83d9009473 Add a SubclassData field to SDNode, similar to what's done 
in Value, to make use of some otherwise unused space. Use this
field to shrink LoadSDNode and StoreSDNode by moving the
addressing mode and ext/trunc fields there.

llvm-svn: 53422
 2008-07-10 21:44:59 +00:00
Dan Gohman
157e75d975 Fix a copy+pasto in an assertion string. 
llvm-svn: 53419
 2008-07-10 19:58:23 +00:00
Dan Gohman
b379840cf7 Stack objects have nonnegative indices, not just positive indices. 
llvm-svn: 53418
 2008-07-10 19:57:25 +00:00
Dan Gohman
bb0847c84c Escape the graph name. This unbreaks -view-cfg. 
llvm-svn: 53417
 2008-07-10 19:55:54 +00:00
Dan Gohman
2b9dccb286 Remove this file; the code that it went with is no longer 
in the repository.

llvm-svn: 53416
 2008-07-10 19:55:04 +00:00
Dan Gohman
1f42b96c7e Make stack slot coloring's debug output more consistent with 
other passes.

llvm-svn: 53415
 2008-07-10 19:49:32 +00:00
Evan Cheng
d7023b66ea Change StackSlotForVirtReg (which maps vregs to frame indices) from std::map to IndexedMap. 
llvm-svn: 53414
 2008-07-10 18:23:23 +00:00
Chris Lattner
b5d45a49ea Remove extraneous vertical whitespace before Eric gets the wrong idea ;-) 
llvm-svn: 53411
 2008-07-10 16:49:53 +00:00
Chris Lattner
5f3c587276 Fix an altivec constant miscompilation that Duncan found through 
his work on legalizetypes.

llvm-svn: 53410
 2008-07-10 16:33:38 +00:00
Duncan Sands
a6c09579f0 Add support for 128 bit multiplicative operations. 
Lack of these caused a bootstrap failure with Fortran
on x86-64 with LegalizeTypes turned on.  While there,
be nice to 16 bit machines and support expansion of
i32 too.

llvm-svn: 53408
 2008-07-10 15:35:05 +00:00
Duncan Sands
90a916539d Add a mysteriously missing libcall, FPTOSINT_F80_I32. 
Be nice to 16 bit machines by supporting FP_TO_XINT
expansion for these.

llvm-svn: 53407
 2008-07-10 15:33:02 +00:00
Duncan Sands
91912e046a Fix a FIXME: use an apint in CTTZ legalization. 
llvm-svn: 53406
 2008-07-10 15:30:54 +00:00
Duncan Sands
f2734eabf2 Remove PromoteIntRes_FP_ROUND - not sure what it 
was doing there: FP_ROUND returns a float, not an
integer.

llvm-svn: 53405
 2008-07-10 15:29:55 +00:00
Duncan Sands
16f5ab06b0 Make sure the alignment of the temporary created 
in CreateStackStoreLoad is good enough for both
the source and destination types.

llvm-svn: 53404
 2008-07-10 15:26:17 +00:00
Duncan Sands
a219bb03e1 Make the LegalizeType method naming scheme more regular. 
llvm-svn: 53403
 2008-07-10 15:25:04 +00:00
Duncan Sands
8afe39dc56 Don't barf when dumping a constant that contains 
a ginormous value (eg: i128 -1).

llvm-svn: 53402
 2008-07-10 11:23:14 +00:00
Duncan Sands
e667a05fcb Correct a comment. 
llvm-svn: 53401
 2008-07-10 11:21:59 +00:00
Matthijs Kooijman
ca5124a630 Restructure dead argument elimination, try #3 :-) 
Rewrite the DeadArgumentElimination pass, to use a more explicit tracking of
dependencies between return values and/or arguments. Also make the handling of
arguments and return values the same.

The pass now looks properly inside returned structs, but only at the first
level (ie, not inside nested structs).

This version fixed a few more bugs and was cleaned up a bit. It now passes all
of LLVM's testing, and should still pass SPEC2006. There is still a minor bug
with regard to returning nested structs. Since there is currently nothing that
emits such IR, I will fix that in a seperate commit (partly because it requires
a non-trivial fix).

llvm-svn: 53400
 2008-07-10 10:24:08 +00:00
Evan Cheng
3ec3113431 - Change the horrible N^2 isRegReDefinedByTwoAddr. Now callers must supply the operand index of def machineoperand and at most one full scan of non-implicit operands is needed. 
- Change local register allocator to use the new isRegReDefinedByTwoAddr instead of reinventing the wheel.

llvm-svn: 53394
 2008-07-10 07:35:43 +00:00
Nick Lewycky
26ccb8e9a8 Fix overzealous optimization. Thanks to Duncan Sands for pointing out my error! 
llvm-svn: 53393
 2008-07-10 05:51:40 +00:00
Owen Anderson
65e43ae1e8 Use DenseMap instead of std::map in local register allocation. This improves the time on instcombine from .31s to .22s 
llvm-svn: 53390
 2008-07-10 01:56:35 +00:00
Owen Anderson
189609bb36 Fix 403.gcc. Finally got the check for two-address-ness correct. 
llvm-svn: 53389
 2008-07-10 01:53:01 +00:00
Owen Anderson
bb9849b7b6 Fix the build by adding a #include. 
llvm-svn: 53388
 2008-07-10 01:44:27 +00:00
Chris Lattner
6d7c5fa8dc The source and dest of an alias are *not* required to have the same type, 
though that would be nice and make sense :).  Patch by Nathan Keynes!

llvm-svn: 53387
 2008-07-10 01:09:33 +00:00
Evan Cheng
02a618dc56 Fix for PR2472. Use movss to set lower 32-bits of a zero XMM vector. 
llvm-svn: 53386
 2008-07-10 01:08:23 +00:00
Chris Lattner
5e57a12a80 open plugins with RTLD_GLOBAL, pointed out by Bram Adams. 
llvm-svn: 53385
 2008-07-10 00:52:20 +00:00
Chris Lattner
7797bfa0fd SImplify ConstantVector::get a bit and make it turn a vector 
of all undefs into a single undef value.

llvm-svn: 53384
 2008-07-10 00:44:03 +00:00
Chris Lattner
563d2c9fac Fix a case where vector comparison constant folding would cause an 
infinite recursion.  part of PR2529

llvm-svn: 53383
 2008-07-10 00:29:28 +00:00
Chris Lattner
cd6afe938b add a helper method for code that wants to handle vector 
constants by element without caring how they are formed.

llvm-svn: 53382
 2008-07-10 00:28:34 +00:00