Dan Gohman
ecb7a77885
Change uses of Function::front to Function::getEntryBlock for readability.
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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
Reid Spencer
e4e4003032
For PR1248:
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* 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
Zhou Sheng
2cde46cb66
Simplify isHighOnes().
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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
Reid Spencer
5f6a89562d
Make isOneBitSet faster by using APInt::isPowerOf2. Thanks Chris.
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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.
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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.
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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
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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.
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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)
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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.
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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
318bf7963a
Implement InstCombine/and-xor-merge.ll:test[12].
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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
Zhou Sheng
adc149549d
ShiftAmt might equal to zero. Handle this situation.
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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().
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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
Chris Lattner
bc1dbfce62
ifdef out some dead code.
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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
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"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():
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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
Reid Spencer
8cb6834ccf
Add an APInt version of SimplifyDemandedBits.
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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.
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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".
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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():
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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
Zhou Sheng
a47f60bfaf
Fix a bug in function ComputeMaskedBits().
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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
Zhou Sheng
9a28daa864
Fix a bug in APIntified ComputeMaskedBits().
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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:
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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:
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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
Reid Spencer
baf1e4b914
Remove an unnecessary if statement and adjust indentation.
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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
3c69849696
fix a subtle bug that caused an MSVC warning. Thanks to Jeffc for pointing this out.
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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:
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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.
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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
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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
f964f321eb
Speed up -instcombine by 20% by avoiding a particularly expensive passmgr call.
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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
c739cd6d07
my recent change caused a failure in a bswap testcase, because it changed
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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
Chris Lattner
ec9c35826d
add a top-level iteration loop to instcombine. This means that it will never
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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
Chris Lattner
dbab386e23
Fix a significant algorithm problem with the instcombine worklist. removing
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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
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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
Reid Spencer
62aa905595
The 64-bit constructor for ConstantInt changes from int64_t to uint64_t.
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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
Chris Lattner
b3036683c1
Fix InstCombine/2007-02-23-PhiFoldInfLoop.ll and PR1217
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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
535014f8ec
convert more vectors to smallvectors, 2.8% speedup
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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
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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%
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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
9d6565a5b1
For PR1195:
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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.
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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
93e985f1b1
Eliminate use of ctors that take vectors.
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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.
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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
6934a04a8c
Simplify code by using value::takename
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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
b0b991a2c8
Fix miscompilations of consumer-typeset, telecomm-gsm, and 176.gcc.
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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
Chris Lattner
4f3ebab172
fix a miscompilation of 176.gcc
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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
Chris Lattner
b87056f111
rewrite shift/shift folding, now that types are not signed.
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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
Reid Spencer
6734b57d1b
For PR1163:
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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
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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
a07cb7def5
Remove dead code and fix indentation per Chris' review comments.
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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