Commit Graph

748 Commits

Author SHA1 Message Date
Chris Lattner
a4beeef76c delete stores to allocas with one use. This is a trivial form of DSE which
often kicks in for ?: expressions.

llvm-svn: 33231
2007-01-15 06:51:56 +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
6ee923f3bb instcombine has always been miscompiling fcmp x, x, disregarding possible
NANs.  This fixes PR1111 and Transforms/InstCombine/2007-01-14-FcmpSelf.ll

llvm-svn: 33208
2007-01-14 19:42:17 +00:00
Chris Lattner
387bf3f700 Fix Transforms/InstCombine/2007-01-13-ExtCompareMiscompile.ll, which is part
of PR1107

llvm-svn: 33185
2007-01-13 23:11:38 +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
cddc9dfe97 Implement review feedback for the ConstantBool->ConstantInt merge. Chris
recommended that getBoolValue be replaced with getZExtValue and that
get(bool) be replaced by get(const Type*, uint64_t). This implements
those changes.

llvm-svn: 33110
2007-01-12 04:24:46 +00:00
Reid Spencer
542964f55b Rename BoolTy as Int1Ty. Patch by Sheng Zhou.
llvm-svn: 33076
2007-01-11 18:21:29 +00:00
Zhou Sheng
bd23db9968 Remove unnecessary boolean type check.
llvm-svn: 33075
2007-01-11 14:38:17 +00:00
Zhou Sheng
75b871fb1e For PR1043:
Merge ConstantIntegral and ConstantBool into ConstantInt.
Remove ConstantIntegral and ConstantBool from LLVM.

llvm-svn: 33073
2007-01-11 12:24:14 +00:00
Jeff Cohen
223004cd12 Unbreak VC++ build.
llvm-svn: 33021
2007-01-08 20:17:17 +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
fbc524fe87 relax some types
llvm-svn: 32980
2007-01-07 06:58:05 +00:00
Chris Lattner
7051d758de Fix regressions in InstCombine/call-cast-target.ll and InstCombine/2003-11-13-ConstExprCastCall.ll
llvm-svn: 32959
2007-01-06 19:53:32 +00:00
Chris Lattner
c343a99786 this final call to canLosslesslyBitCastTo is dead, because ValueRequiresCast
is only called on integers.

llvm-svn: 32949
2007-01-06 02:11:56 +00:00
Chris Lattner
400f959a0c simplify some more code now that there are not multiple different integer
types of the same size

llvm-svn: 32948
2007-01-06 02:09:32 +00:00
Chris Lattner
64d87b0215 eliminate some uses of canLosslesslyBitCastTo, this actually makes the code stronger, by nuking
relational pointer comparisons with casts.

llvm-svn: 32947
2007-01-06 01:45:59 +00:00
Chris Lattner
d7b6ea166d Implement InstCombine/vec_shuffle.ll:%test7, simplifying shuffles with
undef operands.

llvm-svn: 32899
2007-01-05 07:36:08 +00:00
Chris Lattner
17c7c030c2 fold things like a^b != c^a -> b != c. This implements InstCombine/xor.ll:test27
llvm-svn: 32893
2007-01-05 03:04:57 +00:00
Chris Lattner
23eb8ec78b Compile X + ~X to -1. This implements Instcombine/add.ll:test34
llvm-svn: 32890
2007-01-05 02:17:46 +00:00
Reid Spencer
6ff3e73db6 Death to useless bitcast instructions!
llvm-svn: 32866
2007-01-04 05:23:51 +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
193df25eb9 For PR1066:
Fix this by ensuring that a bitcast is inserted to do sign switching. This
is only temporarily needed as the merging of signed and unsigned is next
on the SignlessTypes plate.

llvm-svn: 32757
2006-12-24 00:40:59 +00:00
Reid Spencer
910f23f7d7 Shut up some compilers that can't accurately analyze variable usage
correctly and emit "may be used uninitialized" warnings.

llvm-svn: 32756
2006-12-23 19:17:57 +00:00
Reid Spencer
43c77d53ff For PR1065:
Don't allow CmpInst instances to be processed in FoldSelectOpOp because
you can't easily swap their operands.

llvm-svn: 32753
2006-12-23 18:58:04 +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
Reid Spencer
668d90f289 Convert the last uses of CastInst::createInferredCast to a normal cast
creation. These changes are still temporary but at least this pushes
knowledge of signedness out closer to where it can be determined properly
and allows signedness to be removed from VMCore.

llvm-svn: 32654
2006-12-18 08:47:13 +00:00
Reid Spencer
74a528b427 Fix a bug in EvaluateInDifferentType. The type of operand should not be
used to determine whether a ZExt or SExt cast is performed. Instead, pass
an "isSigned" bool to the function and determine its value from the opcode
of the cast involved.
Also, clean up some cruft from previous patches.

llvm-svn: 32548
2006-12-13 18:21:21 +00:00
Reid Spencer
2a499b0b6c Implement review feedback. Most of this has to do with removing unnecessary
cast instructions. A few are bug fixes.

llvm-svn: 32544
2006-12-13 17:19:09 +00:00
Reid Spencer
612683b0d7 For mul transforms, when checking for a cast from bool as either operand,
make sure to also check that it is a zext from bool, not any other cast
operation type.

llvm-svn: 32539
2006-12-13 08:33:33 +00:00
Reid Spencer
799b5bfc71 Fix and/or/xor (cast A), (cast B) --> cast (and/or/xor A, B)
The cast patch introduced the possibility that the wrong cast opcode
could be used and that this transform could trigger on different kinds
of cast operations. This patch rectifies that.

llvm-svn: 32538
2006-12-13 08:27:15 +00:00
Reid Spencer
bb65ebf9a1 Replace inferred getCast(V,Ty) calls with more strict variants.
Rename getZeroExtend and getSignExtend to getZExt and getSExt to match
the the casting mnemonics in the rest of LLVM.

llvm-svn: 32514
2006-12-12 23:36:14 +00:00
Chris Lattner
2dc148e89d this can be trunc or bitcast, per line 3092.
llvm-svn: 32487
2006-12-12 19:11:20 +00:00
Chris Lattner
ade1f6894d Fix regression on 400.perlbench last night.
llvm-svn: 32486
2006-12-12 18:41:03 +00:00
Reid Spencer
13bc5d7b57 Fix numerous inferred casts.
llvm-svn: 32479
2006-12-12 09:18:51 +00:00
Bill Wendling
f3baad3ee1 Changed llvm_ostream et all to OStream. llvm_cerr, llvm_cout, llvm_null, are
now cerr, cout, and NullStream resp.

llvm-svn: 32298
2006-12-07 01:30:32 +00:00
Reid Spencer
4ae56f3086 Update ConstantIntegral Max/Min tests for new interface.
llvm-svn: 32288
2006-12-06 20:39:57 +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
Chris Lattner
c209b584eb add an instcombine xform. This speeds up 462.libquantum from 9.78s to
7.48s.  This regression is due to unforseen consequences of the cast patch.

llvm-svn: 32209
2006-12-05 01:26:29 +00:00
Reid Spencer
14fbdd5523 Update call to CastInst::getCastOpcode for its new signature.
llvm-svn: 32166
2006-12-04 02:48:01 +00:00
Chris Lattner
7a002fec1f disable transformations that are invalid for fp vectors. This fixes
Transforms/InstCombine/2006-12-01-BadFPVectorXform.ll

llvm-svn: 32112
2006-12-02 00:13:08 +00:00
Reid Spencer
ad05ee9f39 Remove 4 FIXMEs to hack around cast-to-bool problems which no longer exist.
llvm-svn: 32051
2006-11-30 23:13:36 +00:00
Chris Lattner
960acb008b implement cast.ll:test35. With this, we recognize:
unsigned short swp(unsigned short a) {
       return ((a & 0xff00) >> 8 | (a & 0x00ff) << 8);
}

as an idiom for bswap.

llvm-svn: 32011
2006-11-29 07:18:39 +00:00
Chris Lattner
d747f015ff Teach instcombine to turn trunc(srl x, c) -> srl (trunc(x), c) when safe.
This implements InstCombine/cast.ll:test34.  It fires hundreds of times on
176.gcc.

llvm-svn: 32009
2006-11-29 07:04:07 +00:00
Chris Lattner
a7942b7bbd Implement Regression/Transforms/InstCombine/bswap-fold.ll,
folding   seteq (bswap(x)), c -> seteq(x,bswap(c))

llvm-svn: 32006
2006-11-29 05:02:16 +00:00
Reid Spencer
a736fdf216 Join a split line.
llvm-svn: 31996
2006-11-29 01:11:01 +00:00
Reid Spencer
116ad83aa0 Undo the last patch until 253.perlbmk passes with these changes.
llvm-svn: 31977
2006-11-28 20:23:51 +00:00
Reid Spencer
59fe2d89ae Remove 4 FIXME's from the CAST patch now that the back end is correctly
producing code for "trunc to bool". This passes all tests on Linux.

llvm-svn: 31963
2006-11-28 07:23:01 +00:00
Chris Lattner
8e9a7b73d9 Fix PR1014 and InstCombine/2006-11-27-XorBug.ll.
llvm-svn: 31941
2006-11-27 19:55:07 +00:00