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3104 Commits

Author SHA1 Message Date
Zhou Sheng
00f436c5bc Make some codes more efficient. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35297 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-24 15:34:37 +00:00
Reid Spencer
f244252740 For PR1205: 
Convert some calls to ConstantInt::getZExtValue() into getValue() and
use APInt facilities in the subsequent computations.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35294 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-24 00:42:08 +00:00
Reid Spencer
2ec619a29a For PR1205: 
* APIntify visitAdd and visitSelectInst
* Remove unused uint64_t versions of utility functions that have been
  replaced with APInt versions.
This completes most of the changes for APIntification of InstCombine. This
passes llvm-test and llvm/test/Transforms/InstCombine/APInt.

Patch by Zhou Sheng.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35287 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-23 21:24:59 +00:00
Reid Spencer
bca0e38baa For PR1205: 
APIntify visitDiv, visitMul and visitRem.

Patch by Zhou Sheng.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35283 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-23 20:05:17 +00:00
Chris Lattner
2c7718a539 switch AddReachableCodeToWorklist from being recursive to being iterative. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35282 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-23 19:17:18 +00:00
Reid Spencer
b35ae0371a For PR1205: 
APIntify several utility functions supporting logical operators and shift
operators.

Patch by Zhou Sheng.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35281 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-23 18:46:34 +00:00
Zhou Sheng
f62cc9f9e5 Make the "KnownZero ^ TypeMask" computation just once. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35276 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-23 03:13:21 +00:00
Zhou Sheng
9c636fe6f2 Simplify the code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35275 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-23 02:39:25 +00:00
Reid Spencer
a03d45fa88 For PR1205: 
APInt support for logical operators in visitAnd, visitOr, and visitXor.

Patch by Zhou Sheng.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35273 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-22 22:19:58 +00:00
Reid Spencer
ad6676e81b For PR1205: 
* APIntify commonIntCastTransforms
* APIntify visitTrunc
* APIntify visitZExt

Patch by Zhou Sheng.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35271 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-22 20:56:53 +00:00
Reid Spencer
0460fb3ea5 For PR1205: 
* Re-enable the APInt version of MaskedValueIsZero.
* APIntify the Comput{Un}SignedMinMaxValuesFromKnownBits functions
* APIntify visitICmpInst.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35270 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-22 20:36:03 +00:00
Dan Gohman
ecb7a77885 Change uses of Function::front to Function::getEntryBlock for readability. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35265 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-22 16:38:57 +00:00
Nick Lewycky
27e4da93b6 Fix broken optimization disabled by a logic bug. 
Analyze GEPs. If the indices are all zero, transfer whether the pointer is
known to be not null through the GEP.

Add a few more cases for xor and shift instructions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35257 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-22 02:02:51 +00:00
Reid Spencer
e4e4003032 For PR1248: 
* Fix some indentation and comments in InsertRangeTest
* Add an "IsSigned" parameter to AddWithOverflow and make it handle signed
  additions. Also, APIntify this function so it works with any bitwidth.
* For the icmp pred ([us]div %X, C1), C2 transforms, exit early if the
  div instruction's RHS is zero.
* Finally, for icmp pred (sdiv %X, C1), -C2, fix an off-by-one error. The
  HiBound needs to be incremented in order to get the range test correct.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35247 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-21 23:19:50 +00:00
Dale Johannesen
8e59e163db do not share old induction variables when this would result in invalid 
instructions (that would have to be split later)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35227 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-20 21:54:54 +00:00
Jeff Cohen
c01a53007a Fix some VC++ warnings. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35224 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-20 20:43:18 +00:00
Devang Patel
3b57b6f36e LoopSimplify::FindPHIToPartitionLoops() 
Use ETForest instead of DominatorSet.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35221 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-20 20:18:12 +00:00
Zhou Sheng
2cde46cb66 Simplify isHighOnes(). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35211 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-20 12:49:06 +00:00
Dale Johannesen
dc42f48ea9 use types of loads and stores, not address, in CheckForIVReuse 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35197 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-20 00:47:50 +00:00
Reid Spencer
5f6a89562d Make isOneBitSet faster by using APInt::isPowerOf2. Thanks Chris. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35194 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-20 00:16:52 +00:00
Reid Spencer
05227d88af APIntify the isHighOnes utility function. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35190 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-19 21:29:50 +00:00
Reid Spencer
3a2a9fbf99 Implement isMaxValueMinusOne in terms of APInt instead of uint64_t. 
Patch by Sheng Zhou.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35188 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-19 21:10:28 +00:00
Reid Spencer
727992c30a Implement isMinValuePlusOne using facilities of APInt instead of uint64_t 
Patch by Zhou Sheng.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35187 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-19 21:08:07 +00:00
Reid Spencer
44e33e674a Implement isOneBitSet in terms of APInt::countPopulation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35186 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-19 21:04:43 +00:00
Reid Spencer
5a1e3e1a7d 1. Use APInt::getSignBit to reduce clutter (patch by Sheng Zhou) 
2. Replace uses of the "isPositive" utility function with APInt::isPositive


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35185 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-19 20:58:18 +00:00
Reid Spencer
8439bc8d69 Remove a redundant clause in an if statement. 
Patch by Sheng Zhou.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35184 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-19 20:47:50 +00:00
Chris Lattner
a9d1a843fc fix ScalarRepl/2007-03-19-CanonicalizeMemcpy.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35169 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-19 18:25:57 +00:00
Chris Lattner
8bf9911932 implement the next chunk of SROA with memset/memcpy's of aggregates. This 
implements Transforms/ScalarRepl/memset-aggregate-byte-leader.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35150 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-19 00:16:43 +00:00
Nick Lewycky
3f64b1ab1d Clean up this code and fix subtract miscompile. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35146 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-18 22:58:46 +00:00
Chris Lattner
318bf7963a Implement InstCombine/and-xor-merge.ll:test[12]. 
Rearrange some code to simplify it now that shifts are binops


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35145 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-18 22:51:34 +00:00
Nick Lewycky
1eda0f60d7 Propagate ValueRanges across equality. 
Add some more micro-optimizations: x * 0 = 0, a - x = a --> x = 0.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35138 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-18 01:09:32 +00:00
Anton Korobeynikov
1cc6452181 Silence warning 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35137 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-17 14:48:06 +00:00
Nick Lewycky
4c70875774 Add more comments and update to new asm syntax. 
Add new micro-optimizations.

Add icmp predicate snuggling. Given %x ULT 4, "icmp ugt %x, 2" becomes
"icmp eq %x, 3". This doesn't apply in any non-trivial cases yet due to missing
support for NE values in ValueRanges.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35119 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-16 02:37:39 +00:00
Zhou Sheng
adc149549d ShiftAmt might equal to zero. Handle this situation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35094 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-14 09:07:33 +00:00
Zhou Sheng
9670445cd4 Enable KnownZero/One.clear(). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35093 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-14 03:21:24 +00:00
Evan Cheng
1d95816db5 Correct type info for isLegalAddressImmediate() check. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35086 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-13 20:34:37 +00:00
Chris Lattner
bc1dbfce62 ifdef out some dead code. 
Fix PR1244 and Transforms/InstCombine/2007-03-13-CompareMerge.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35082 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-13 14:27:42 +00:00
Zhou Sheng
b277b16593 For expression like 
"APInt::getAllOnesValue(ShiftAmt).zextOrCopy(BitWidth)",
to handle ShiftAmt == BitWidth situation, use zextOrCopy() instead of
zext().


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35080 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-13 06:40:59 +00:00
Zhou Sheng
771dbf7677 In APInt version ComputeMaskedBits(): 
1. Ensure VTy, KnownOne and KnownZero have same bitwidth.
  2. Make code more efficient.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35078 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-13 02:23:10 +00:00
Evan Cheng
5eef2d21a0 Use new TargetLowering addressing modes hooks. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35072 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-12 23:27:37 +00:00
Jeff Cohen
c4558fde76 Unbreak VC++ build. Do not use identifiers starting with _ as they are reserved and 
can collide with system defined names.  Windows defines _BB, for example.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35066 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-12 17:56:27 +00:00
Reid Spencer
8cb6834ccf Add an APInt version of SimplifyDemandedBits. 
Patch by Zhou Sheng.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35064 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-12 17:25:59 +00:00
Reid Spencer
6b79e2d202 Add an APInt version of ShrinkDemandedConstant. 
Patch by Zhou Sheng.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35063 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-12 17:15:10 +00:00
Zhou Sheng
edd089c86a Avoid to assert on "(KnownZero & KnownOne) == 0". 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35062 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-12 16:54:56 +00:00
Zhou Sheng
430f626937 In function ComputeMaskedBits(): 
1. Replace getSignedMinValue() with getSignBit() for better code readability.
  2. Replace APIntOps::shl() with operator<<= for convenience.
  3. Make APInt construction more effective.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35060 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-12 05:44:52 +00:00
Nick Lewycky
e677a0b099 Add value ranges. Currently inefficient in both execution time and 
optimization power.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35058 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-10 18:12:48 +00:00
Anton Korobeynikov
e2ff29c17c Use range tests in LowerSwitch, where possible 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35057 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-10 16:46:28 +00:00
Devang Patel
f7543fe35a Remove dead comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35053 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-09 23:41:03 +00:00
Devang Patel
a5b7dc5ef8 Avoid recursion. Use iterative algorithm for RenamePass(). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35052 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-09 23:39:14 +00:00
Devang Patel
4fe26582c0 Increment iterator now because IVUseShouldUsePostIncValue may remove 
User from the list of I users.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35051 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-09 21:19:53 +00:00
Zhou Sheng
a47f60bfaf Fix a bug in function ComputeMaskedBits(). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35027 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-08 15:15:18 +00:00
Chris Lattner
97f9df1cd1 This appears correct, enable it so we can see perf changes on testers 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35024 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-08 07:03:55 +00:00
Chris Lattner
c14d3cac4b Second half of PR1226. This is currently still disabled, until I have a chance to 
do the correctness/performance analysis testing.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35023 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-08 06:36:54 +00:00
Zhou Sheng
9a28daa864 Fix a bug in APIntified ComputeMaskedBits(). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35022 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-08 05:42:00 +00:00
Reid Spencer
e7816b5c9e For PR1205: 
Provide an APIntified version of MaskedValueIsZero. This will (temporarily)
cause a "defined but not used" message from the compiler. It will be used
in the next patch in this series.

Patch by Sheng Zhou.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35019 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-08 01:52:58 +00:00
Reid Spencer
3e7594f187 For PR1205: 
Add a new ComputeMaskedBits function that is APIntified. We'll slowly
convert things over to use this version. When its all done, we'll remove
the existing version.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35018 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-08 01:46:38 +00:00
Devang Patel
5ee9997906 Now IndVarSimplify is a LoopPass. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35003 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-07 06:39:01 +00:00
Devang Patel
54959d6cf6 Now LICM is a LoopPass. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35001 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-07 04:41:30 +00:00
Devang Patel
3f1a1e0366 Now LoopUnroll is a LoopPass. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34996 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-07 01:38:05 +00:00
Devang Patel
1bc89361c2 Now LoopUnswitch is a LoopPass. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34992 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-07 00:26:10 +00:00
Devang Patel
0f54dcbf07 Now LoopStrengthReduce is a LoopPass. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34984 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-06 21:14:09 +00:00
Reid Spencer
baf1e4b914 Remove an unnecessary if statement and adjust indentation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34939 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-05 23:36:13 +00:00
Chris Lattner
372dda8881 This is the first major step of implementing PR1226. We now successfully 
scalarrepl things down to elements, but mem2reg can't promote elements that
are memset/memcpy'd.  Until then, the code is disabled "0 &&".


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34924 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-05 07:52:57 +00:00
Chris Lattner
3c69849696 fix a subtle bug that caused an MSVC warning. Thanks to Jeffc for pointing this out. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34920 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-05 00:11:19 +00:00
Chris Lattner
783ccdb5c4 Add some simplifications for demanded bits, this allows instcombine to turn: 
define i64 @test(i64 %A, i32 %B) {
        %tmp12 = zext i32 %B to i64             ; <i64> [#uses=1]
        %tmp3 = shl i64 %tmp12, 32              ; <i64> [#uses=1]
        %tmp5 = add i64 %tmp3, %A               ; <i64> [#uses=1]
        %tmp6 = and i64 %tmp5, 123              ; <i64> [#uses=1]
        ret i64 %tmp6
}

into:

define i64 @test(i64 %A, i32 %B) {
        %tmp6 = and i64 %A, 123         ; <i64> [#uses=1]
        ret i64 %tmp6
}

This implements Transforms/InstCombine/add2.ll:test1


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34919 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-05 00:02:29 +00:00
Jeff Cohen
ca5183d445 Unbreak VC++ build. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34917 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-05 00:00:42 +00:00
Chris Lattner
d5fa214729 simplify some code 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34914 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-04 23:16:36 +00:00
Chris Lattner
57939df2eb minor cleanups 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34904 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-04 04:50:21 +00:00
Chris Lattner
f964f321eb Speed up -instcombine by 20% by avoiding a particularly expensive passmgr call. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34902 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-04 04:27:24 +00:00
Chris Lattner
55091782c1 switch MarkAliveBlocks over to using SmallPtrSet instead of std::set, speeding 
up simplifycfg by 20%


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34901 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-04 04:20:48 +00:00
Chris Lattner
9f3d738866 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34898 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-04 03:43:23 +00:00
Chris Lattner
9caed5440d Implement PR1179/PR1232 and test/Transforms/IndVarsSimplify/loop_evaluate_[234].ll 
This makes -indvars require and use LCSSA, updating it as appropriate.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34896 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-04 01:00:28 +00:00
Chris Lattner
c9838f25d5 Make RewriteLoopExitValues far less nested by using continue in the loop 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34891 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-03 22:48:48 +00:00
Chris Lattner
c739cd6d07 my recent change caused a failure in a bswap testcase, because it changed 
the order that instcombine processed instructions in the testcase.  The end
result is that instcombine finished with:

define i16 @test1(i16 %a) {
        %tmp = zext i16 %a to i32               ; <i32> [#uses=2]
        %tmp21 = lshr i32 %tmp, 8               ; <i32> [#uses=1]
        %tmp5 = shl i32 %tmp, 8         ; <i32> [#uses=1]
        %tmp.upgrd.32 = or i32 %tmp21, %tmp5            ; <i32> [#uses=1]
        %tmp.upgrd.3 = trunc i32 %tmp.upgrd.32 to i16           ; <i16> [#uses=1]
        ret i16 %tmp.upgrd.3
}

which can't get matched as a bswap.

This patch makes instcombine more sophisticated about removing truncating
casts, allowing it to turn this into:

define i16 @test2(i16 %a) {
        %tmp211 = lshr i16 %a, 8
        %tmp52 = shl i16 %a, 8
        %tmp.upgrd.323 = or i16 %tmp211, %tmp52
        ret i16 %tmp.upgrd.323
}

which then matches as bswap.  This fixes bswap.ll and implements
InstCombine/cast2.ll:test[12].  This also implements cast elimination of
add/sub.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34870 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-03 05:27:34 +00:00
Nick Lewycky
b6431da7be Translate bit operations to English. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34868 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-03 03:14:40 +00:00
Chris Lattner
ec9c35826d add a top-level iteration loop to instcombine. This means that it will never 
finish without combining something it is capable of.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34865 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-03 02:04:50 +00:00
Reid Spencer
af3e9468dc APIntify this pass. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34863 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-03 00:48:31 +00:00
Reid Spencer
bee0f663d8 Finally get this patch right :) 
Replace expensive getZExtValue() == 0 calls with isZero() calls.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34861 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-02 23:51:25 +00:00
Reid Spencer
502db93a8a Dang, I've done that twice now! Undo previous commit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34860 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-02 23:37:53 +00:00
Reid Spencer
a5dae0cac0 Use more efficient test for one value in a ConstantInt. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34859 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-02 23:35:28 +00:00
Reid Spencer
4e69f48a0a Guard against huge loop trip counts in an APInt safe way. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34858 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-02 23:31:34 +00:00
Reid Spencer
e8391e039e Make sure debug code is not evaluated in non-debug case. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34856 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-02 23:15:21 +00:00
Reid Spencer
f1bed4c720 1. Sort switch cases using APInt safe comparison. 
2. Make sure debug output of APInt values is safe for all bit widths.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34855 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-02 23:05:28 +00:00
Reid Spencer
4cf735b47e Use APInt safe isOne() method on ConstantInt instead of getZExtValue()==1 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34854 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-02 23:03:17 +00:00
Reid Spencer
e1c99d4c69 Make sorting of ConstantInt be APInt clean through use of ult function. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34853 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-02 23:01:14 +00:00
Chris Lattner
dbab386e23 Fix a significant algorithm problem with the instcombine worklist. removing 
a value from the worklist required scanning the entire worklist to remove all
entries.  We now use a combination map+vector to prevent duplicates from
happening and prevent the scan.  This speeds up instcombine on a large file
from the llvm-gcc bootstrap from 189.7s to 4.84s in a debug build and from
5.04s to 1.37s in a release build.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34848 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-02 21:28:56 +00:00
Chris Lattner
f22a5c6e9e minor cleanup 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34846 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-02 19:59:19 +00:00
Chris Lattner
67ef241f45 switch the inliner from being recursive to being iterative. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34832 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-02 03:11:20 +00:00
Reid Spencer
513d0f25ed Reverse a premature commital. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34822 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-02 00:31:39 +00:00
Reid Spencer
cae5754619 Prefer non-virtual calls to ConstantInt::isZero over virtual calls to 
Constant::isNullValue() in situations where it is possible.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34821 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-02 00:28:52 +00:00
Reid Spencer
a3507ebd33 Although probably not necessary, guard against a potential assertion by 
using isNullValue() instead of getZExtValue() == 0.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34815 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-01 21:54:37 +00:00
Reid Spencer
4da0451821 Use isUnitValue() instead of getZExtValue() == 1 which will prevent an 
assert if the ConstantInt's value is large.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34814 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-01 21:51:23 +00:00
Reid Spencer
a0e0129e3f Use APInt conversion to string so the result is correct regardless of the 
bit width of the ConstantInt being converted.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34810 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-01 21:00:32 +00:00
Reid Spencer
62aa905595 The 64-bit constructor for ConstantInt changes from int64_t to uint64_t. 
This caused a warning for construction with -1. Avoid the warning by using
-1ULL instead.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34796 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-01 19:33:52 +00:00
Reid Spencer
a6e8a955d6 Remove the "isSigned" parameters from ConstantRange. It turns out they 
are not needed as the results are the same with or without it.

Patch by Nicholas Lewycky.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34782 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-01 07:54:15 +00:00
Reid Spencer
c6aedf70b3 For PR1205: 
Adjust to changes in ConstantRange interface.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34762 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-28 22:03:51 +00:00
Reid Spencer
581b0d453a For PR1205: 
Remove ConstantInt from ConstantRange interface and adjust its users to
compensate.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34758 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-28 19:57:34 +00:00
Reid Spencer
dc5c159701 For PR1205: 
First round of ConstantRange changes. This makes all CR constructors use
only APInt and not use ConstantInt. Clients are adjusted accordingly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34756 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-28 18:57:32 +00:00
Devang Patel
fb688d4d1c Use efficient container SmallPtrSet 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34640 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-26 20:22:50 +00:00
Devang Patel
5295692061 Do not unswitch loop on same value again and again. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34638 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-26 19:31:58 +00:00
Chris Lattner
b3036683c1 Fix InstCombine/2007-02-23-PhiFoldInfLoop.ll and PR1217 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34546 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-24 01:03:45 +00:00
Chris Lattner
cae0a193e3 fix an obscure and tricky bug the inliner can hit sometimes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34531 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-23 19:54:30 +00:00
Jim Laskey
7d4853896c Revert changes for a simplier solution. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34495 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-22 16:21:18 +00:00
Jim Laskey
c518ccfeb5 Itanium ABI exception handing support. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34480 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-21 22:49:50 +00:00
Dan Gohman
e26bff22db Fix typos in comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34456 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-20 20:52:03 +00:00
Chris Lattner
bb9a041100 remove reoptimizer-specific passes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34439 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-20 05:31:49 +00:00
Chris Lattner
ec1f752ae4 eliminate use of deprecated apis 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34417 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-19 07:34:47 +00:00
Chris Lattner
4a6f363491 fix comment 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34395 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-18 22:10:58 +00:00
Chris Lattner
eb47391994 simplify pass, delete dead gvar protos as well. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34394 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-18 22:10:34 +00:00
Chris Lattner
535014f8ec convert more vectors to smallvectors, 2.8% speedup 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34333 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-15 22:52:10 +00:00
Chris Lattner
72588fc3f4 change some vectors to smallvectors. This speeds up instcombine on 447.dealII 
by 5%.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34332 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-15 22:48:32 +00:00
Chris Lattner
1f87a58ab2 switch an std::set to a SmallPtr set, this speeds up instcombine by 9.5% 
on 447.dealII


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34323 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-15 19:41:52 +00:00
Reid Spencer
ac9dcb94dd For PR1195: 
Change use of "packed" term to "vector" in comments, strings, variable
names, etc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34300 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-15 03:39:18 +00:00
Reid Spencer
d29b8b85ce Change an assert that mentions Packed Type -> Vector Type. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34298 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-15 03:11:20 +00:00
Reid Spencer
9d6565a5b1 For PR1195: 
Rename PackedType -> VectorType, ConstantPacked -> ConstantVector, and
PackedTyID -> VectorTyID. No functional changes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34293 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-15 02:26:10 +00:00
Chris Lattner
d2b7cec527 Generalize TargetData strings, to support more interesting forms of data. 
Patch by Scott Michel.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34266 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-14 05:52:17 +00:00
Chris Lattner
c18470cb00 eliminate a bunch of vector-related heap traffic 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34222 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-13 05:58:53 +00:00
Chris Lattner
93e985f1b1 Eliminate use of ctors that take vectors. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34219 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-13 02:10:56 +00:00
Chris Lattner
1ccd185cb4 stop using methods that take vectors. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34205 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-12 22:56:41 +00:00
Chris Lattner
dec628eead Switch ValueSymbolTable to use StringMap<Value*> instead of std::map<std::string, Value*> 
as its main datastructure.  There are many improvements yet to be made, but
this speeds up opt --std-compile-opts on 447.dealII by 7.3%.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34193 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-12 05:18:08 +00:00
Chris Lattner
86cc423555 simplify code by using Value::takeName 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34177 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-11 01:37:51 +00:00
Chris Lattner
6934a04a8c Simplify code by using value::takename 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34176 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-11 01:23:03 +00:00
Chris Lattner
046800a712 simplify name juggling through the use of Value::takeName. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34175 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-11 01:08:35 +00:00
Chris Lattner
b1919e2f08 Privatize StructLayout::MemberOffsets, adding an accessor 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34156 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-10 19:55:17 +00:00
Chris Lattner
3cfc1d22b2 Fix Transforms/DeadArgElim/2007-02-07-FuncRename.ll, fallout from PR411. 
This happened because deadargelim now causes VMCore to auto-rename every
function that it hacks arguments out of.  Because it hacks arguments out of
functions in a non-deterministic order, this caused the resultant numbering
to be nondet.  The fix is to just be careful to not rename functions!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34005 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-07 19:31:33 +00:00
Chris Lattner
7f1444bc0a shrink vmcore by moving symbol table stripping support out of VMCore into 
the one IPO pass that uses it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33990 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-07 06:22:45 +00:00
Chris Lattner
dfb22c3521 redesign the primary datastructure used by mem2reg to eliminate an 
std::map of std::vector's (ouch!).  This speeds up mem2reg by 10% on 176.gcc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33974 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-07 01:15:04 +00:00
Chris Lattner
d3874049a5 With the last change, we no longer need both directions of mapping from 
BBNumbers.  Instead of using a bi-directional mapping, just use a single
densemap.  This speeds up mem2reg on 176.gcc by 8%, from  1.3489 to
1.2485s.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33940 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-05 23:37:20 +00:00
Reid Spencer
9133fe2895 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33939 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-05 23:32:05 +00:00
Chris Lattner
a0d1548d0d Simplify use of DFBlocks, this makes no noticable performance difference, 
but paves the way to eliminate BBNumbers.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33938 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-05 23:31:26 +00:00
Reid Spencer
59d043bc8c This file should have been removed when -raise was removed. It isn't 
used any more.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33937 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-05 23:27:02 +00:00
Chris Lattner
6a1a28dedd Switch InsertedPHINodes back to SmallPtrSet now that the SmallPtrSet::erase 
bug is fixed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33932 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-05 23:11:37 +00:00
Chris Lattner
fc7d13d898 switch a SmallPtrSet back to an std::set for now, this caused problems. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33930 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-05 22:28:52 +00:00
Chris Lattner
c670f3da72 switch an std::set over to a SmallPtrSet, speeding up mem2reg 6% on 176.gcc. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33929 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-05 22:15:21 +00:00
Chris Lattner
c837615cf0 switch an std::set over to SmallPtrSet, speeding up mem2reg 3.4% on 176.gcc. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33928 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-05 22:13:11 +00:00
Chris Lattner
40b6555561 eliminate some malloc traffic, this speeds up mem2reg by 3.4%. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33927 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-05 21:58:48 +00:00
Reid Spencer
7ea07659a1 Add missing and needed #include. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33926 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-05 21:47:39 +00:00
Reid Spencer
9153a6729f Make the class VISIBILITY_HIDDEN. 
Reduce lexical size of the anonymous namespace.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33925 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-05 21:45:12 +00:00
Reid Spencer
688b0490e2 For PR411: 
Adjust to changes in Module interface:
getMainFunction() -> getFunction("main")
getNamedFunction(X) -> getFunction(X)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33922 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-05 21:19:13 +00:00
Reid Spencer
ef9b9a7939 For PR411: 
This patch replaces the SymbolTable class with ValueSymbolTable which does
not support types planes. This means that all symbol names in LLVM must now
be unique. The patch addresses the necessary changes to deal with this and
removes code no longer needed as a result. This completes the bulk of the
changes for this PR. Some cleanup patches will follow.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33918 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-05 20:47:22 +00:00
Reid Spencer
15468bfc22 For PR411: 
This pass is no longer needed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33917 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-05 20:41:05 +00:00
Reid Spencer
c19fbd6ec8 Create a pass to strip dead function declarations (prototypes). This is 
for use by llvm-extract and bugpoint.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33916 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-05 20:24:25 +00:00
Chris Lattner
b0b991a2c8 Fix miscompilations of consumer-typeset, telecomm-gsm, and 176.gcc. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33902 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-05 05:57:49 +00:00
Reid Spencer
0974ea0911 For PR1177: 
Revert last patch which caused iteration invalidation.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33901 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-05 05:23:32 +00:00
Chris Lattner
4f3ebab172 fix a miscompilation of 176.gcc 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33900 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-05 04:09:35 +00:00
Owen Anderson
93235181d6 Use DenseMap for pointer->pointer maps. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33897 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-05 02:39:47 +00:00
Chris Lattner
b87056f111 rewrite shift/shift folding, now that types are not signed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33892 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-05 00:57:54 +00:00
Nick Lewycky
4535175328 Fix indenting, remove tabs. 
Learn from sext and zext. The destination value falls within the range of the
source type.

Generalize properties regarding constant ints.

Get smarter about marking blocks as unreachable. If 1 >= 2 in order for this
block to execute, then it isn't reachable.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33889 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-04 23:43:05 +00:00
Reid Spencer
6734b57d1b For PR1163: 
Make the Module's dependent library use a std::vector instead of SetVector
adjust #includes in .cpp files because SetVector.h is no longer included.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33855 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-04 00:40:42 +00:00
Chris Lattner
7f3da2dd13 remove some dead code 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33845 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-03 23:28:07 +00:00
Reid Spencer
7ba98a9000 For PR1072: 
Removing -raise has neglible positive or negative side effects so we are
opting to remove it. See the PR for comparison details.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33844 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-03 23:15:56 +00:00
Chris Lattner
5e665f5594 Switch inliner over to use DenseMap instead of std::map for ValueMap. This 
speeds up the inliner 16%.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33801 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-03 00:08:31 +00:00
Chris Lattner
c1ec780d1e Switch this back to using an std::map. DenseMap entries are getting invalidated 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33799 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-02 22:36:16 +00:00
Chris Lattner
1c1f112f74 Remove more malloc thrashing, this speeds up IPSCCP on kimwitu another 6.7%. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33796 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-02 21:15:06 +00:00
Chris Lattner
cc56aad06d Convert an std::set to SmallSet, this speeds up IPSCCP 17% on kimwitu. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33794 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-02 20:57:39 +00:00
Chris Lattner
e777ff21b0 eliminate a malloc/free for (almost) every GEP processed. This speeds up 
IPSCCP 3.3% on kimwitu.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33793 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-02 20:51:48 +00:00
Chris Lattner
b59673e650 switch hash_map's over to DenseMap in SCCP. This speeds up SCCP by 30% in 
a release-assert build on kimwitu++.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33792 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-02 20:38:30 +00:00
Reid Spencer
a07cb7def5 Remove dead code and fix indentation per Chris' review comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33785 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-02 14:41:37 +00:00
Reid Spencer
cc46cdb47c Use short form of binary operator create functions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33783 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-02 14:08:20 +00:00
Chris Lattner
0737c24053 bugfix for reid's shift patch. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33779 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-02 05:29:55 +00:00
Reid Spencer
832254e1c2 Changes to support making the shift instructions be true BinaryOperators. 
This feature is needed in order to support shifts of more than 255 bits
on large integer types.  This changes the syntax for llvm assembly to
make shl, ashr and lshr instructions look like a binary operator:
   shl i32 %X, 1
instead of
   shl i32 %X, i8 1
Additionally, this should help a few passes perform additional optimizations.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33776 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-02 02:16:23 +00:00
Chris Lattner
fd905caa77 Fix Transforms/InstCombine/2007-02-01-LoadSinkAlloca.ll, a serious code 
pessimization where instcombine can sink a load (good for code size) that
prevents an alloca from being promoted by mem2reg (bad for everything).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33771 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-01 22:30:07 +00:00
Reid Spencer
8282e3f92b Ensure that ConvertOperandToType generates a result conversion by 
initializing the Res variable to 0 and asserting it is not zero after the
result should have been created.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33761 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-01 19:14:51 +00:00
Chris Lattner
8e8eda78cc Fix bugs in the inliner having to do with single-entry phi nodes and valuemap 
updating.  These were exposed by Devang's recent passmgr changes (with
non-default passorderings) because now the inliner can be interleved with
the LCSSA pass.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33760 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-01 18:48:38 +00:00
Chris Lattner
fbbe92f5fd remove temporary vectors. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33715 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-31 20:08:52 +00:00
Chris Lattner
20066f936c eliminate temporary vectors 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33713 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-31 20:07:32 +00:00
Chris Lattner
699d144a4b eliminate temporary vectors 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33712 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-31 19:59:55 +00:00
Chris Lattner
a88d6ca6f9 Revert another incorrectly applied chunk, which fixes InstCombine/vec_insert_to_shuffle.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33705 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-31 18:09:17 +00:00
Chris Lattner
55eb1c47de eliminate temporary vectors 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33693 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-31 04:40:53 +00:00
Chris Lattner
a4f4659865 Move symbolic constant folding code to libanalysis. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33688 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-31 00:53:10 +00:00
Chris Lattner
79066fa6ac Adjust #includes to match movement of constant folding code from transformutils to libanalysis. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33680 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-30 23:46:24 +00:00
Chris Lattner
5520732b24 move a bunch of constant folding code f rom Transforms/Utils/Local.cpp into 
libanalysis/ConstantFolding.cpp.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33679 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-30 23:45:45 +00:00
Chris Lattner
4973190b07 remove now-dead code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33678 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-30 23:29:47 +00:00
Chris Lattner
ff2dad3128 the inliner pass now passes targetdata down through the inliner api's 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33677 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-30 23:28:39 +00:00
Chris Lattner
1dfdf8255e The inliner/cloner can now optionally take TargetData info, which can be 
used by constant folding.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33676 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-30 23:22:39 +00:00
Chris Lattner
0a19ffaf58 pass TD to constant folding apis 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33674 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-30 23:16:15 +00:00
Chris Lattner
cd2492e6ff use smallvector instead of vector to make constant folding a bit more efficient 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33672 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-30 23:15:19 +00:00
Chris Lattner
6c1f56574c adjust to api change 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33671 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-30 23:14:52 +00:00
Chris Lattner
9fa038dc21 Change constant folding APIs to take an optional TargetData, and change 
ConstantFoldInstOperands/ConstantFoldCall to take a pointer to an array
of operands + size, instead of an std::vector.

In some cases, switch to using a SmallVector instead of a vector.
This allows us to get rid of some special case gross code that was there
to avoid the cost of constructing a vector.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33670 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-30 23:13:49 +00:00
Chris Lattner
db43c63389 remove some bits that are not yet meant to land. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33666 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-30 22:50:32 +00:00
Chris Lattner
c5eff4488b Symbolically evaluate constant expressions like &A[123] - &A[4].f. 
This occurs in C++ code like:

#include <iostream>
#include <iterator>
int a[] = { 1, 2, 3, 4, 5 };
int main() {
  using namespace std;
  copy(a, a + sizeof(a)/sizeof(a[0]), ostream_iterator<int>(cout, "\n"));
  return 0;
}

Before we would decide the loop trip count is:
sdiv (i32 sub (i32 ptrtoint (i32* getelementptr ([5 x i32]* @a, i32 0, i32 5) to i32), i32 ptrtoint ([5 x i32]* @a to i32)), i32 4)

Now we decide it is "5".  Amazing.

This code will need to be refactored, but I'm doing that as a separate
commit.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33665 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-30 22:32:46 +00:00
Reid Spencer
5cbf985dcb For PR1136: Rename GlobalVariable::isExternal as isDeclaration to avoid 
confusion with external linkage types.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33663 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-30 20:08:39 +00:00
Nick Lewycky
6a08f918b6 Simplify names of lattice values. SGTUNE becomes SGT, for example. 
Fix initializeConstant, now initializeInt. Fixes major performance
bottleneck.

X == Y || X->DominatedBy(Y) is redundant. Remove the X == Y part.

Fix crasher in makeEqual where getOrInsertNode would add a new constant,
producing an NE relationship between the two members we're trying to make
equal. This now allows us to mark more BBs as unreachable.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33612 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-29 02:56:54 +00:00
Anton Korobeynikov
b10308e440 Propagate changes from my local tree. This patch includes: 
1. New parameter attribute called 'inreg'. It has meaning "place this
parameter in registers, if possible". This is some generalization of
gcc's regparm(n) attribute. It's currently used only in X86-32 backend.
2. Completely rewritten CC handling/lowering code inside X86 backend.
Merged stdcall + c CCs and fastcall + fast CC.
3. Dropped CSRET CC. We cannot add struct return variant for each
target-specific CC (e.g. stdcall + csretcc and so on).
4. Instead of CSRET CC introduced 'sret' parameter attribute. Setting in
on first attribute has meaning 'This is hidden pointer to structure
return. Handle it gently'.
5. Fixed small bug in llvm-extract + add new feature to
FunctionExtraction pass, which relinks all internal-linkaged callees
from deleted function to external linkage. This will allow further
linking everything together.

NOTEs: 1. Documentation will be updated soon.
       2. llvm-upgrade should be improved to translate csret => sret.
          Before this, there will be some unexpected test fails.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33597 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-28 13:31:35 +00:00
Chris Lattner
424db0209c Fix test/Transforms/InstCombine/2007-01-27-AndICmp.ll, a miscompilation of 
Mozilla that Anton tracked down.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33591 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-27 23:08:34 +00:00
Jim Laskey
44c3b9fdd4 Change the MachineDebugInfo to MachineModuleInfo to better reflect usage 
for debugging and exception handling.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33550 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-26 21:22:28 +00:00
Reid Spencer
26f238589f For PR761: 
The Module::setEndianness and Module::setPointerSize methods have been
removed. Instead you can get/set the DataLayout. Adjust thise accordingly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33530 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-26 08:11:39 +00:00
Devang Patel
c71ca3cdd2 Inherit CallGraphSCCPass directly from Pass. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33514 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-26 00:47:38 +00:00
Devang Patel
4d447f5121 Inherit BasicBlockPass directly from Pass. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33511 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-25 23:23:25 +00:00
Chris Lattner
338305b0b6 Make llvm-extract preserve the callingconv of prototypes in the extracted 
code.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33500 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-25 17:38:26 +00:00
Reid Spencer
4223016d02 Cleanup checks in the load and store of casted pointer transforms. Two 
changes: (1) don't special case for i1 any more, (2) use the new
TargetData::getTypeSizeInBits method to ensure source and dest are the
same bit width.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33427 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-22 05:51:25 +00:00
Reid Spencer
24d6da5fed For PR970: 
Clean up handling of isFloatingPoint() and dealing with PackedType.
Patch by Gordon Henriksen!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33415 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-21 00:29:26 +00:00
Reid Spencer
67f827ce5b Revise the store V, (cast P) -> store (cast V) -> P transform. 
We only want to do this if the src and destination types have the same
bit width. This patch uses TargetData::getTypeSizeInBits() instead of
making a special case for integer types and avoiding the transform if
they don't match.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33414 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-20 23:35:48 +00:00
Chris Lattner
58092e35a3 Teach TargetData to handle 'preferred' alignment for each target, and use 
these alignment amounts to align scalars when we can.  Patch by Scott Michel!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33409 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-20 22:35:55 +00:00
Owen Anderson
f4d5de4080 Correct a comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33397 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-20 10:07:23 +00:00
Reid Spencer
55af2b59bb For this transform: store V, (cast P) -> store (cast V), P 
don't allow the transform if V and the pointer's element type are different
width integer types.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33371 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-19 21:20:31 +00:00
Reid Spencer
c10305743c For PR1043: 
This is the final patch for this PR. It implements some minor cleanup
in the use of IntegerType, to wit:
1. Type::getIntegerTypeMask -> IntegerType::getBitMask
2. Type::Int*Ty changed to IntegerType* from Type*
3. ConstantInt::getType() returns IntegerType* now, not Type*

This also fixes PR1120.

Patch by Sheng Zhou.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33370 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-19 21:13:56 +00:00
Chris Lattner
696ee0ab15 Fix InstCombine/2007-01-18-VectorInfLoop.ll, a case where instcombine 
infinitely loops.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33343 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-18 22:16:33 +00:00
Reid Spencer
7515396096 Clean up some code around the store V, (cast P) -> store (cast V), P 
transform. Change some variable names so it is clear what is source and
what is dest of the cast. Also, add an assert to ensure that the integer
to integer case is asserting if the bitwidths are different. This prevents
illegal casts from being formed and catches bitwidth bugs sooner.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33337 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-18 18:54:33 +00:00
Reid Spencer
7af9a13f3a For PR1094: 
Adjust the use of SetVector for changes in SetVector's interface.
Patch by Gordon Henriksen.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33280 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-17 02:23:37 +00:00