Commit Graph

139 Commits

Author SHA1 Message Date
Devang Patel 92b032f3e6 if loop induction variable is always sign or zero extended then
extend the type of induction variable.

llvm-svn: 56017
2008-09-09 21:41:07 +00:00
Devang Patel d94269f906 Remove unused map.
llvm-svn: 55861
2008-09-05 21:55:33 +00:00
Dan Gohman a79db30d28 Tidy up several unbeseeming casts from pointer to intptr_t.
llvm-svn: 55779
2008-09-04 17:05:41 +00:00
Dan Gohman 1fcc804cfd Pass the computed iteration count value to RewriteLoopExitValues
instead of having it call getIterationCount again.

llvm-svn: 54380
2008-08-05 22:34:21 +00:00
Dan Gohman 90071075e2 Use Loop::block_iterator.
llvm-svn: 52616
2008-06-22 20:18:58 +00:00
Wojciech Matyjewicz 25a7f5de92 Use recently added getTruncateOrZeroExtend method to make the code shorter.
llvm-svn: 52251
2008-06-13 17:02:03 +00:00
Dan Gohman f96e1371e8 Tidy up BasicBlock::getFirstNonPHI, and change a bunch of places to
use it instead of duplicating its functionality.

llvm-svn: 51499
2008-05-23 21:05:58 +00:00
Gabor Greif e1f6e4b21d API change for {BinaryOperator|CmpInst|CastInst}::create*() --> Create. Legacy interfaces will be in place for some time. (Merge from use-diet branch.)
llvm-svn: 51200
2008-05-16 19:29:10 +00:00
Dan Gohman d78c400b5b Clean up the use of static and anonymous namespaces. This turned up
several things that were neither in an anonymous namespace nor static
but not intended to be global.

llvm-svn: 51017
2008-05-13 00:00:25 +00:00
Gabor Greif e9ecc68d8f API changes for class Use size reduction, wave 1.
Specifically, introduction of XXX::Create methods
for Users that have a potentially variable number of
Uses.

llvm-svn: 49277
2008-04-06 20:25:17 +00:00
Chris Lattner f3ebc3f3d2 Remove attribution from file headers, per discussion on llvmdev.
llvm-svn: 45418
2007-12-29 20:36:04 +00:00
Dan Gohman a37eaf2bf9 Move the SCEV object factors from being static members of the individual
SCEV subclasses to being non-static member functions of the ScalarEvolution
class.

llvm-svn: 43224
2007-10-22 18:31:58 +00:00
Devang Patel d7409fdce5 Require SCEV before LCSSA.
llvm-svn: 41798
2007-09-10 18:08:23 +00:00
David Greene c656cbb8c2 Update GEP constructors to use an iterator interface to fix
GLIBCXX_DEBUG issues.

llvm-svn: 41697
2007-09-04 15:46:09 +00:00
Devang Patel b5933bbbd5 Use SmallVector instead of std::vector.
llvm-svn: 41207
2007-08-21 00:31:24 +00:00
Zhou Sheng 8d438858c8 Fix a bug.
llvm-svn: 37751
2007-06-27 09:50:26 +00:00
Dan Gohman 32f53bbd85 Rename ScalarEvolution::deleteInstructionFromRecords to
deleteValueFromRecords and loosen the types to all it to accept
Value* instead of just Instruction*, since this is what
ScalarEvolution uses internally anyway. This allows more flexibility
for future uses.

llvm-svn: 37657
2007-06-19 14:28:31 +00:00
Dan Gohman 203a035251 Use SCEVConstant::get instead of SCEVUnknown::get to create an
integer constant SCEV.

llvm-svn: 37596
2007-06-15 18:00:55 +00:00
Dan Gohman cb9e09ad57 Add a SCEV class and supporting code for sign-extend expressions.
This created an ambiguity for expandInTy to decide when to use
sign-extension or zero-extension, but it turns out that most of its callers
don't actually need a type conversion, now that LLVM types don't have
explicit signedness. Drop expandInTy in favor of plain expand, and change
the few places that actually need a type conversion to do it themselves.

llvm-svn: 37591
2007-06-15 14:38:12 +00:00
Nick Lewycky 91ed6efc24 Inform ScalarEvolutions that we're deleting Values.
This is the obviously correct part of the fix for PR1487.

llvm-svn: 37457
2007-06-06 03:51:56 +00:00
Nick Lewycky e7da2d6ac3 Fix typo in comment.
llvm-svn: 36873
2007-05-06 13:37:16 +00:00
Devang Patel 8c78a0bff0 Drop 'const'
llvm-svn: 36662
2007-05-03 01:11:54 +00:00
Devang Patel e95c6ad802 Use 'static const char' instead of 'static const int'.
Due to darwin gcc bug, one version of darwin linker coalesces
static const int, which defauts PassID based pass identification.

llvm-svn: 36652
2007-05-02 21:39:20 +00:00
Devang Patel 09f162ca6a Do not use typeinfo to identify pass in pass manager.
llvm-svn: 36632
2007-05-01 21:15:47 +00:00
Devang Patel 2ac57e1f02 Now IndVarSimplify is a LoopPass.
llvm-svn: 35003
2007-03-07 06:39:01 +00:00
Chris Lattner d7b4c92cd0 make better use of LCSSA information in RewriteLoopExitValues. Before, we
would scan the entire loop body, then scan all users of instructions in the
loop, looking for users outside the loop.  Now, since we know that the
loop is in LCSSA form, we know that any users outside the loop will be LCSSA
phi nodes.  Just scan them.

This speeds up indvars significantly.

llvm-svn: 34898
2007-03-04 03:43:23 +00:00
Chris Lattner 1f7648efba Implement PR1179/PR1232 and test/Transforms/IndVarsSimplify/loop_evaluate_[234].ll
This makes -indvars require and use LCSSA, updating it as appropriate.

llvm-svn: 34896
2007-03-04 01:00:28 +00:00
Chris Lattner ed30abf0cb Make RewriteLoopExitValues far less nested by using continue in the loop
llvm-svn: 34891
2007-03-03 22:48:48 +00:00
Reid Spencer 2e54a15943 Prefer non-virtual calls to ConstantInt::isZero over virtual calls to
Constant::isNullValue() in situations where it is possible.

llvm-svn: 34821
2007-03-02 00:28:52 +00:00
Chris Lattner 6e0123b17f Simplify code by using value::takename
llvm-svn: 34176
2007-02-11 01:23:03 +00:00
Reid Spencer 557ab15e71 Apply the VISIBILITY_HIDDEN field to the remaining anonymous classes in
the Transforms library. This reduces debug library size by 132 KB, debug
binary size by 376 KB, and reduces link time for llvm tools slightly.

llvm-svn: 33939
2007-02-05 23:32:05 +00:00
Chris Lattner 416a8939c3 remove temporary vectors.
llvm-svn: 33715
2007-01-31 20:08:52 +00:00
Chris Lattner f96f4a874c eliminate temporary vectors
llvm-svn: 33693
2007-01-31 04:40:53 +00:00
Chris Lattner 03c4953cdd rename Type::isIntegral to Type::isInteger, eliminating the old Type::isInteger.
rename Type::getIntegralTypeMask to Type::getIntegerTypeMask.

This makes naming much more consistent.  For example, there are now no longer any
instances of IntegerType that are not considered isInteger! :)

llvm-svn: 33225
2007-01-15 02:27:26 +00:00
Chris Lattner 1942249c5b Eliminate calls to isInteger, generalizing code and tightening checks as needed.
llvm-svn: 33218
2007-01-15 01:55:30 +00:00
Chris Lattner f5e5236b57 simplify some code
llvm-svn: 33150
2007-01-12 22:51:20 +00:00
Reid Spencer 7a9c62baa6 For PR1064:
Implement the arbitrary bit-width integer feature. The feature allows
integers of any bitwidth (up to 64) to be defined instead of just 1, 8,
16, 32, and 64 bit integers.

This change does several things:
1. Introduces a new Derived Type, IntegerType, to represent the number of
   bits in an integer. The Type classes SubclassData field is used to
   store the number of bits. This allows 2^23 bits in an integer type.
2. Removes the five integer Type::TypeID values for the 1, 8, 16, 32 and
   64-bit integers. These are replaced with just IntegerType which is not
   a primitive any more.
3. Adjust the rest of LLVM to account for this change.

Note that while this incremental change lays the foundation for arbitrary
bit-width integers, LLVM has not yet been converted to actually deal with
them in any significant way. Most optimization passes, for example, will
still only deal with the byte-width integer types.  Future increments
will rectify this situation.

llvm-svn: 33113
2007-01-12 07:05:14 +00:00
Reid Spencer 8f166b0ef3 Comparison of primitive type sizes should now be done in bits, not bytes.
This patch converts getPrimitiveSize to getPrimitiveSizeInBits where it is
appropriate to do so (comparison of integer primitive types).

llvm-svn: 33012
2007-01-08 16:32:00 +00:00
Chris Lattner 0816559b13 add -debug output for -indvars.
llvm-svn: 32971
2007-01-07 01:14:12 +00:00
Reid Spencer c635f47d9a For PR950:
This patch replaces signed integer types with signless ones:
1. [US]Byte -> Int8
2. [U]Short -> Int16
3. [U]Int   -> Int32
4. [U]Long  -> Int64.
5. Removal of isSigned, isUnsigned, getSignedVersion, getUnsignedVersion
   and other methods related to signedness. In a few places this warranted
   identifying the signedness information from other sources.

llvm-svn: 32785
2006-12-31 05:48:39 +00:00
Reid Spencer 266e42b312 For PR950:
This patch removes the SetCC instructions and replaces them with the ICmp
and FCmp instructions. The SetCondInst instruction has been removed and
been replaced with ICmpInst and FCmpInst.

llvm-svn: 32751
2006-12-23 06:05:41 +00:00
Chris Lattner 79a42ac941 Switch over Transforms/Scalar to use the STATISTIC macro. For each statistic
converted, we lose a static initializer.  This also allows GCC to emit warnings
about unused statistics.

llvm-svn: 32690
2006-12-19 21:40:18 +00:00
Chris Lattner 700b873130 Detemplatize the Statistic class. The only type it is instantiated with
is 'unsigned'.

llvm-svn: 32279
2006-12-06 17:46:33 +00:00
Reid Spencer 6c38f0bb07 For PR950:
The long awaited CAST patch. This introduces 12 new instructions into LLVM
to replace the cast instruction. Corresponding changes throughout LLVM are
provided. This passes llvm-test, llvm/test, and SPEC CPUINT2000 with the
exception of 175.vpr which fails only on a slight floating point output
difference.

llvm-svn: 31931
2006-11-27 01:05:10 +00:00
Chris Lattner 51c95cdd82 Fix Transforms/IndVarsSimplify/2006-09-20-LFTR-Crash.ll
llvm-svn: 30555
2006-09-21 05:12:20 +00:00
Chris Lattner c2d3d3112e eliminate RegisterOpt. It does the same thing as RegisterPass.
llvm-svn: 29925
2006-08-27 22:42:52 +00:00
Owen Anderson 8e4b029573 Add an assertion to check that we're really preserving LCSSA.
llvm-svn: 29886
2006-08-25 22:12:36 +00:00
Owen Anderson 8cca95cf5d Reapply the indvars patch, since nothing blew up last night.
llvm-svn: 29874
2006-08-25 17:41:25 +00:00
Owen Anderson 94446a4267 Revert my previous patch. Since there are some major changes that went in today,
I'm going to wait to put this in HEAD until tomorrow, so as not to clutter the nightly
tester.

llvm-svn: 29868
2006-08-25 03:45:57 +00:00
Owen Anderson 15a6423431 Specify that indvars actually preserve LCSSA. This has been done for a while, but I
forgot to put in the analysis usage.

llvm-svn: 29867
2006-08-25 03:32:13 +00:00