fe2b44de9f
fix Transforms/InstCombine/2007-05-10-icmp-or.ll
...
llvm-svn: 36984
2007-05-11 05:55:56 +00:00
e7da2d6ac3
Fix typo in comment.
...
llvm-svn: 36873
2007-05-06 13:37:16 +00:00
9b35b3e863
Fix a bug in my previous patch
...
llvm-svn: 36857
2007-05-06 07:24:03 +00:00
5aa73fe34c
Implement Transforms/InstCombine/cast_ptr.ll
...
llvm-svn: 36809
2007-05-05 22:41:33 +00:00
361e981415
wrap long lines
...
llvm-svn: 36807
2007-05-05 22:32:24 +00:00
5c827bda0d
Fix InstCombine/2007-05-04-Crash.ll and PR1384
...
llvm-svn: 36775
2007-05-05 01:59:31 +00:00
8c78a0bff0
Drop 'const'
...
llvm-svn: 36662
2007-05-03 01:11:54 +00:00
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
09f162ca6a
Do not use typeinfo to identify pass in pass manager.
...
llvm-svn: 36632
2007-05-01 21:15:47 +00:00
089e35cc57
fix a bug triggered by 403.gcc
...
llvm-svn: 36527
2007-04-28 05:27:36 +00:00
6e880871e9
Fix several latent bugs in EmitGEPOffset that didn't manifest with its
...
previous clients. This fixes MallocBench/gs
llvm-svn: 36525
2007-04-28 04:52:43 +00:00
c753800800
uhn zap cvs
...
llvm-svn: 36523
2007-04-28 03:50:56 +00:00
acbf6a401d
Implement PR1345 and Transforms/InstCombine/bitcast-gep.ll
...
llvm-svn: 36521
2007-04-28 00:57:34 +00:00
1db224db92
refactor some code relating to pointer cast xforms, pulling it out of the codepath
...
for unrelated casts.
llvm-svn: 36511
2007-04-27 17:44:50 +00:00
aafe4e216e
Make use of ConstantInt::isZero instead of ConstantInt::isNullValue.
...
llvm-svn: 36261
2007-04-19 05:39:12 +00:00
4a6e0cbd41
Extend store merging to support the 'if/then' version in addition to if/then/else.
...
This sinks the two stores in this example into a single store in cond_next. In this
case, it allows elimination of the load as well:
store double 0.000000e+00, double* @s.3060
%tmp3 = fcmp ogt double %tmp1, 5.000000e-01 ; <i1> [#uses=1]
br i1 %tmp3, label %cond_true, label %cond_next
cond_true: ; preds = %entry
store double 1.000000e+00, double* @s.3060
br label %cond_next
cond_next: ; preds = %entry, %cond_true
%tmp6 = load double* @s.3060 ; <double> [#uses=1]
This implements Transforms/InstCombine/store-merge.ll:test2
llvm-svn: 36040
2007-04-15 01:02:18 +00:00
14a251b937
refactor some code, no functionality change.
...
llvm-svn: 36037
2007-04-15 00:07:55 +00:00
28d921d04f
fix long lines
...
llvm-svn: 36031
2007-04-14 23:32:02 +00:00
7bfdd0abe1
Implement Transforms/InstCombine/vec_extract_elt.ll, transforming:
...
define i32 @test(float %f) {
%tmp7 = insertelement <4 x float> undef, float %f, i32 0
%tmp17 = bitcast <4 x float> %tmp7 to <4 x i32>
%tmp19 = extractelement <4 x i32> %tmp17, i32 0
ret i32 %tmp19
}
into:
define i32 @test(float %f) {
%tmp19 = bitcast float %f to i32 ; <i32> [#uses=1]
ret i32 %tmp19
}
On PPC, this is the difference between:
_test:
mfspr r2, 256
oris r3, r2, 8192
mtspr 256, r3
stfs f1, -16(r1)
addi r3, r1, -16
addi r4, r1, -32
lvx v2, 0, r3
stvx v2, 0, r4
lwz r3, -32(r1)
mtspr 256, r2
blr
and:
_test:
stfs f1, -4(r1)
nop
nop
nop
lwz r3, -4(r1)
blr
llvm-svn: 36025
2007-04-14 23:02:14 +00:00
b37fb6a0da
Implement InstCombine/vec_demanded_elts.ll:test2. This allows us to turn
...
unsigned test(float f) {
return _mm_cvtsi128_si32( (__m128i) _mm_set_ss( f*f ));
}
into:
_test:
movss 4(%esp), %xmm0
mulss %xmm0, %xmm0
movd %xmm0, %eax
ret
instead of:
_test:
movss 4(%esp), %xmm0
mulss %xmm0, %xmm0
xorps %xmm1, %xmm1
movss %xmm0, %xmm1
movd %xmm1, %eax
ret
GCC gets:
_test:
subl $28, %esp
movss 32(%esp), %xmm0
mulss %xmm0, %xmm0
xorps %xmm1, %xmm1
movss %xmm0, %xmm1
movaps %xmm1, %xmm0
movd %xmm0, 12(%esp)
movl 12(%esp), %eax
addl $28, %esp
ret
llvm-svn: 36020
2007-04-14 22:29:23 +00:00
efb33d28c6
Implement PR1201 and test/Transforms/InstCombine/malloc-free-delete.ll
...
llvm-svn: 35981
2007-04-14 00:20:02 +00:00
74ff60ff84
Turn stuff like:
...
icmp slt i32 %X, 0 ; <i1>:0 [#uses=1]
sext i1 %0 to i32 ; <i32>:1 [#uses=1]
into:
%X.lobit = ashr i32 %X, 31 ; <i32> [#uses=1]
This implements InstCombine/icmp.ll:test[34]
llvm-svn: 35891
2007-04-11 06:57:46 +00:00
d0f7942e23
Simplify some comparisons to arithmetic, this implements:
...
Transforms/InstCombine/icmp.ll
llvm-svn: 35890
2007-04-11 06:53:04 +00:00
20f2372a7c
canonicalize (x <u 2147483648) -> (x >s -1) and (x >u 2147483647) -> (x <s 0)
...
llvm-svn: 35886
2007-04-11 06:12:58 +00:00
7ddbff090a
fix a miscompilation of:
...
define i32 @test(i32 %X) {
entry:
%Y = and i32 %X, 4 ; <i32> [#uses=1]
icmp eq i32 %Y, 0 ; <i1>:0 [#uses=1]
sext i1 %0 to i32 ; <i32>:1 [#uses=1]
ret i32 %1
}
by moving code out of commonIntCastTransforms into visitZExt. Simplify the
APInt gymnastics in it etc.
llvm-svn: 35885
2007-04-11 05:45:39 +00:00
467b69cabb
Strengthen the boundary conditions of this fold, implementing
...
InstCombine/set.ll:test25
llvm-svn: 35852
2007-04-09 23:52:13 +00:00
a87c9f6114
Fix PR1304 and Transforms/InstCombine/2007-04-08-SingleEltVectorCrash.ll
...
llvm-svn: 35792
2007-04-09 01:37:55 +00:00
4ca9cbb170
Eliminate useless insertelement instructions. This implements
...
Transforms/InstCombine/vec_insertelt.ll and fixes PR1286.
We now compile the code from that bug into:
_foo:
movl 4(%esp), %eax
movdqa (%eax), %xmm0
movl 8(%esp), %ecx
psllw (%ecx), %xmm0
movdqa %xmm0, (%eax)
ret
instead of:
_foo:
subl $4, %esp
movl %ebp, (%esp)
movl %esp, %ebp
movl 12(%ebp), %eax
movdqa (%eax), %xmm0
#IMPLICIT_DEF %eax
pinsrw $2, %eax, %xmm0
xorl %ecx, %ecx
pinsrw $3, %ecx, %xmm0
pinsrw $4, %eax, %xmm0
pinsrw $5, %ecx, %xmm0
pinsrw $6, %eax, %xmm0
pinsrw $7, %ecx, %xmm0
movl 8(%ebp), %eax
movdqa (%eax), %xmm1
psllw %xmm0, %xmm1
movdqa %xmm1, (%eax)
movl %ebp, %esp
popl %ebp
ret
woo :)
llvm-svn: 35788
2007-04-09 01:11:16 +00:00
c8d3788f71
reenable this xform, whoops :)
...
llvm-svn: 35765
2007-04-08 08:01:49 +00:00
7621a031d8
Fix regression on Instcombine/apint-or2.ll
...
llvm-svn: 35763
2007-04-08 07:55:22 +00:00
1150df9cc4
Generalize the code that handles (A&B)|(A&C) to work where B/C are not constants.
...
Add a new xform to simplify (A&B)|(~A&C). THis implements InstCombine/or2.ll:test1
llvm-svn: 35760
2007-04-08 07:47:01 +00:00
3dbe65f80a
implement Transforms/InstCombine/malloc2.ll and PR1313
...
llvm-svn: 35700
2007-04-06 18:57:34 +00:00
7c2001d014
Prevent transformConstExprCastCall from generating conversions that assert
...
elsewhere.
llvm-svn: 35668
2007-04-04 19:16:42 +00:00
5a1c750f31
Fix 2007-04-04-BadFoldBitcastIntoMalloc.ll
...
llvm-svn: 35665
2007-04-04 16:58:57 +00:00
f01a47c93c
Fix comment.
...
llvm-svn: 35655
2007-04-04 06:42:45 +00:00
e5bbb3cb1a
Fix a bug I introduced with my patch yesterday which broke Qt (I converted
...
some constant exprs to apints).
Thanks to Anton for tracking down a small testcase that triggered this!
llvm-svn: 35633
2007-04-03 23:29:39 +00:00
a74deafb13
reinstate the previous two patches, with a bugfix :)
...
ldecod now passes.
llvm-svn: 35626
2007-04-03 17:43:25 +00:00
7511fa280d
Reverting back to 1.723. The last two commits broke JM (and possibily others) on ARM.
...
llvm-svn: 35620
2007-04-03 08:11:50 +00:00
64c764cebc
Split a whole ton of code out of visitICmpInst into visitICmpInstWithInstAndIntCst.
...
llvm-svn: 35614
2007-04-03 04:46:52 +00:00
8b2ec5f506
Fix PR1253 and xor2.ll:test[01]
...
llvm-svn: 35612
2007-04-03 01:47:41 +00:00
9bc8ab100d
1. Make use of APInt operation instead of using ConstantExpr::getXXX.
...
2. Use cheaper APInt methods.
llvm-svn: 35594
2007-04-02 13:45:30 +00:00
56cda95658
Use uint32_t for bitwidth instead of unsigned.
...
llvm-svn: 35593
2007-04-02 08:20:41 +00:00
9d5aacee92
Wrap long line
...
llvm-svn: 35588
2007-04-02 05:48:58 +00:00
50490d54f2
use more obvious function name.
...
llvm-svn: 35587
2007-04-02 05:42:22 +00:00
b24acc7bee
simplify (x+c)^signbit as (x+c+signbit), pointed out by PR1288. This implements
...
test/Transforms/InstCombine/xor.ll:test28
llvm-svn: 35584
2007-04-02 05:36:22 +00:00
c3eeb42809
simplify this code, make it work for ap ints
...
llvm-svn: 35561
2007-04-01 20:57:36 +00:00
150f3bbab2
Avoid unnecessary APInt construction.
...
llvm-svn: 35555
2007-04-01 17:13:37 +00:00
6bba6c8143
For PR1297:
...
Support overloaded intrinsics bswap, ctpop, cttz, ctlz.
llvm-svn: 35547
2007-04-01 07:35:23 +00:00
0427799531
Fix InstCombine/2007-03-31-InfiniteLoop.ll
...
llvm-svn: 35536
2007-04-01 05:36:37 +00:00
82c42284f4
Delete dead code.
...
llvm-svn: 35525
2007-03-31 02:50:26 +00:00
4f16402e0d
Use APInt operators to calculate the carry bits, remove this loop.
...
llvm-svn: 35524
2007-03-31 02:38:39 +00:00
fd28a33031
Make sure the use of ConstantInt::getZExtValue() for shift amount safe.
...
llvm-svn: 35510
2007-03-30 17:20:39 +00:00
b25806fa5f
1. Make sure the use of ConstantInt::getZExtValue() for getting shift
...
amount is safe.
2. Use new method on ConstantInt instead of (? :) operator.
3. Use new method uge() on ConstantInt to simplify codes.
llvm-svn: 35505
2007-03-30 09:29:48 +00:00
5e60a4a6b0
Use APInt operation instead of ConstantExpr::getXX.
...
llvm-svn: 35503
2007-03-30 05:45:18 +00:00
b3a80b1d70
1. Make more use of APInt::getHighBitsSet/getLowBitsSet.
...
2. Let APInt variable do the binary operation stuff instead of using
ConstantExpr::getXXX.
llvm-svn: 35450
2007-03-29 08:15:12 +00:00
444af49cc0
Clean up some codes in InstCombiner::SimplifyDemandedBits().
...
llvm-svn: 35446
2007-03-29 04:45:55 +00:00
a4475575c0
Clean up codes in InstCombiner::SimplifyDemandedBits():
...
1. Line out nested call of APInt::zext/trunc.
2. Make more use of APInt::getHighBitsSet/getLowBitsSet.
3. Use APInt[] operator instead of expression like "APIntVal & SignBit".
llvm-svn: 35444
2007-03-29 02:26:30 +00:00
4961cf1c06
1. Make the APInt variable do the binary operation stuff if possible
...
instead of using ConstantExpr::getXX.
2. Use constant reference to APInt if possible instead of expensive
APInt copy.
llvm-svn: 35443
2007-03-29 01:57:21 +00:00
117477e28b
Avoid unnecessary APInt construction.
...
llvm-svn: 35431
2007-03-28 17:38:21 +00:00
23f7a1c947
1. Make more use of getLowBitsSet/getHighBitsSet.
...
2. Use APInt[] instead of "X & SignBit".
3. Clean up some codes.
4. Make the expression like "ShiftAmt = ShiftAmtC->getZExtValue()" safe.
llvm-svn: 35424
2007-03-28 15:02:20 +00:00
2777a31850
1. Make more use of getLowBitsSet/getHighBitsSet.
...
2. Make the APInt value do the zext/trunc stuff instead of using
ConstantExpr::getZExt().
llvm-svn: 35422
2007-03-28 09:19:01 +00:00
c2d3309b99
Use UnknownBIts[BitWidth-1] instead of UnknownBIts & SignBits.
...
llvm-svn: 35418
2007-03-28 05:15:57 +00:00
18570b1f14
Remove unused APInt variable.
...
llvm-svn: 35414
2007-03-28 03:02:21 +00:00
57e3f7324b
Clean up codes in ComputeMaskedBits():
...
1. Line out nested use of zext/trunc.
2. Make more use of getHighBitsSet/getLowBitsSet.
3. Use APInt[] != 0 instead of "(APInt & SignBit) != 0".
llvm-svn: 35408
2007-03-28 02:19:03 +00:00
a5c18bf798
For PR1280:
...
When converting an add/xor/and triplet into a trunc/sext, only do so if the
intermediate integer type is a bitwidth that the targets can handle.
llvm-svn: 35400
2007-03-28 01:36:16 +00:00
a4ed8a512a
Unbreaks non-debug builds.
...
llvm-svn: 35383
2007-03-27 16:44:48 +00:00
54d5b1b8f8
Implement some minor review feedback.
...
llvm-svn: 35373
2007-03-26 23:58:26 +00:00
441486c172
For PR1271:
...
Fix another incorrectly converted shift mask.
llvm-svn: 35371
2007-03-26 23:45:51 +00:00
d2602d5054
eliminate use of std::set
...
llvm-svn: 35361
2007-03-26 20:40:50 +00:00
755d0e7ffc
Get better debug output by having modified instructions print both the
...
original and new instruction. A slight performance hit with ostringstream
but it is only for debug.
Also, clean up an uninitialized variable warning noticed in a release build.
llvm-svn: 35358
2007-03-26 17:44:01 +00:00
769a5a8e0b
Get the number of bits to set in a mask correct for a shl/lshr transform.
...
llvm-svn: 35357
2007-03-26 17:18:58 +00:00
50898607a9
For PR1271:
...
Fix SingleSource/Regression/C/2003-05-21-UnionBitFields.c by changing a
getHighBitsSet call to getLowBitsSet call that was incorrectly converted
from the original lshr constant expression.
llvm-svn: 35348
2007-03-26 05:25:00 +00:00
52830327e9
For PR1271:
...
Remove a use of getLowBitsSet that caused the mask used for replacement of
shl/lshr pairs with an AND instruction to be computed incorrectly. Its not
clear exactly why this is the case. This solves the disappearing shifts
problem, but it doesn't fix Regression/C/2003-05-21-UnionBitFields. It
seems there is more going on.
llvm-svn: 35342
2007-03-25 21:11:44 +00:00
9bf53ffaa2
implement Transforms/InstCombine/cast2.ll:test3 and PR1263
...
llvm-svn: 35341
2007-03-25 20:43:09 +00:00
624766f8a2
Some cleanup from review:
...
* Don't assume shift amounts are <= 64 bits
* Avoid creating an extra APInt in SubOne and AddOne by using -- and ++
* Add another use of getLowBitsSet
* Convert a series of if statements to a switch
llvm-svn: 35339
2007-03-25 19:55:33 +00:00
80263aadf3
Refactor several ConstantExpr::getXXX calls with ConstantInt arguments
...
using the facilities of APInt. While this duplicates a tiny fraction of
the constant folding code, it also makes the code easier to read and
avoids large ConstantExpr overhead for simple, known computations.
llvm-svn: 35335
2007-03-25 05:33:51 +00:00
222d5ebfd2
1. Avoid unnecessary APInt construction if possible.
...
2. Use isStrictlyPositive() instead of isPositive() in two places where
they need APInt value > 0 not only >=0.
llvm-svn: 35333
2007-03-25 05:01:29 +00:00
cd99fbdf3b
Make more uses of getHighBitsSet and get rid of some pointless & of an
...
APInt with its type mask.
llvm-svn: 35325
2007-03-25 04:26:16 +00:00
d8aad61d4d
More APIntification:
...
* Convert the last use of a uint64_t that should have been an APInt.
* Change ComputeMaskedBits to have a const reference argument for the Mask
so that recursions don't cause unneeded temporaries. This causes temps
to be needed in other places (where the mask has to change) but this
change optimizes for the recursion which is more frequent.
* Remove two instances of &ing a Mask with getAllOnesValue. Its not
needed any more because APInt is accurate in its bit computations.
* Start using the getLowBitsSet and getHighBits set methods on APInt
instead of shifting. This makes it more clear in the code what is
going on.
llvm-svn: 35321
2007-03-25 02:03:12 +00:00
3a8248f79d
fix a regression on vector or instructions.
...
llvm-svn: 35314
2007-03-24 23:56:43 +00:00
e9ebd3f6ba
Make some codes more efficient.
...
llvm-svn: 35297
2007-03-24 15:34:37 +00:00
a962d18774
For PR1205:
...
Convert some calls to ConstantInt::getZExtValue() into getValue() and
use APInt facilities in the subsequent computations.
llvm-svn: 35294
2007-03-24 00:42:08 +00:00
959a21d3dc
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.
llvm-svn: 35287
2007-03-23 21:24:59 +00:00
6d39206bc2
For PR1205:
...
APIntify visitDiv, visitMul and visitRem.
Patch by Zhou Sheng.
llvm-svn: 35283
2007-03-23 20:05:17 +00:00
12b89cc148
switch AddReachableCodeToWorklist from being recursive to being iterative.
...
llvm-svn: 35282
2007-03-23 19:17:18 +00:00
6274c72ee1
For PR1205:
...
APIntify several utility functions supporting logical operators and shift
operators.
Patch by Zhou Sheng.
llvm-svn: 35281
2007-03-23 18:46:34 +00:00
0900993ebc
Make the "KnownZero ^ TypeMask" computation just once.
...
llvm-svn: 35276
2007-03-23 03:13:21 +00:00
755f04b5d7
Simplify the code.
...
llvm-svn: 35275
2007-03-23 02:39:25 +00:00
b722f2b110
For PR1205:
...
APInt support for logical operators in visitAnd, visitOr, and visitXor.
Patch by Zhou Sheng.
llvm-svn: 35273
2007-03-22 22:19:58 +00:00
4154e732e6
For PR1205:
...
* APIntify commonIntCastTransforms
* APIntify visitTrunc
* APIntify visitZExt
Patch by Zhou Sheng.
llvm-svn: 35271
2007-03-22 20:56:53 +00:00
c3e3b8a32f
For PR1205:
...
* Re-enable the APInt version of MaskedValueIsZero.
* APIntify the Comput{Un}SignedMinMaxValuesFromKnownBits functions
* APIntify visitICmpInst.
llvm-svn: 35270
2007-03-22 20:36:03 +00:00
dcb291faa4
Change uses of Function::front to Function::getEntryBlock for readability.
...
llvm-svn: 35265
2007-03-22 16:38:57 +00:00
f40711637f
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.
llvm-svn: 35247
2007-03-21 23:19:50 +00:00
b3949340c8
Simplify isHighOnes().
...
llvm-svn: 35211
2007-03-20 12:49:06 +00:00
6682721316
Make isOneBitSet faster by using APInt::isPowerOf2. Thanks Chris.
...
llvm-svn: 35194
2007-03-20 00:16:52 +00:00
cc031a43aa
APIntify the isHighOnes utility function.
...
llvm-svn: 35190
2007-03-19 21:29:50 +00:00
ef599b0786
Implement isMaxValueMinusOne in terms of APInt instead of uint64_t.
...
Patch by Sheng Zhou.
llvm-svn: 35188
2007-03-19 21:10:28 +00:00
3b93db72b4
Implement isMinValuePlusOne using facilities of APInt instead of uint64_t
...
Patch by Zhou Sheng.
llvm-svn: 35187
2007-03-19 21:08:07 +00:00
129a86792d
Implement isOneBitSet in terms of APInt::countPopulation.
...
llvm-svn: 35186
2007-03-19 21:04:43 +00:00
450434ed65
1. Use APInt::getSignBit to reduce clutter (patch by Sheng Zhou)
...
2. Replace uses of the "isPositive" utility function with APInt::isPositive
llvm-svn: 35185
2007-03-19 20:58:18 +00:00
03c31d5bb0
Remove a redundant clause in an if statement.
...
Patch by Sheng Zhou.
llvm-svn: 35184
2007-03-19 20:47:50 +00:00
0741842b3b
Implement InstCombine/and-xor-merge.ll:test[12].
...
Rearrange some code to simplify it now that shifts are binops
llvm-svn: 35145
2007-03-18 22:51:34 +00:00
d8c645b0ba
ShiftAmt might equal to zero. Handle this situation.
...
llvm-svn: 35094
2007-03-14 09:07:33 +00:00
b912844554
Enable KnownZero/One.clear().
...
llvm-svn: 35093
2007-03-14 03:21:24 +00:00
d1bce956b4
ifdef out some dead code.
...
Fix PR1244 and Transforms/InstCombine/2007-03-13-CompareMerge.ll
llvm-svn: 35082
2007-03-13 14:27:42 +00:00
ebe634e662
For expression like
...
"APInt::getAllOnesValue(ShiftAmt).zextOrCopy(BitWidth)",
to handle ShiftAmt == BitWidth situation, use zextOrCopy() instead of
zext().
llvm-svn: 35080
2007-03-13 06:40:59 +00:00
af4341d441
In APInt version ComputeMaskedBits():
...
1. Ensure VTy, KnownOne and KnownZero have same bitwidth.
2. Make code more efficient.
llvm-svn: 35078
2007-03-13 02:23:10 +00:00
1791f23803
Add an APInt version of SimplifyDemandedBits.
...
Patch by Zhou Sheng.
llvm-svn: 35064
2007-03-12 17:25:59 +00:00
d9281784be
Add an APInt version of ShrinkDemandedConstant.
...
Patch by Zhou Sheng.
llvm-svn: 35063
2007-03-12 17:15:10 +00:00
be171ee5cd
Avoid to assert on "(KnownZero & KnownOne) == 0".
...
llvm-svn: 35062
2007-03-12 16:54:56 +00:00
b3e00c4656
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.
llvm-svn: 35060
2007-03-12 05:44:52 +00:00
d1eb3d593e
Fix a bug in function ComputeMaskedBits().
...
llvm-svn: 35027
2007-03-08 15:15:18 +00:00
387d7b1a35
Fix a bug in APIntified ComputeMaskedBits().
...
llvm-svn: 35022
2007-03-08 05:42:00 +00:00
bb5741fb02
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.
llvm-svn: 35019
2007-03-08 01:52:58 +00:00
aa69640b10
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.
llvm-svn: 35018
2007-03-08 01:46:38 +00:00
3939b1a274
Remove an unnecessary if statement and adjust indentation.
...
llvm-svn: 34939
2007-03-05 23:36:13 +00:00
fe53cf2459
fix a subtle bug that caused an MSVC warning. Thanks to Jeffc for pointing this out.
...
llvm-svn: 34920
2007-03-05 00:11:19 +00:00
5fdded1d2f
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
llvm-svn: 34919
2007-03-05 00:02:29 +00:00
b622c11f77
Unbreak VC++ build.
...
llvm-svn: 34917
2007-03-05 00:00:42 +00:00
ab2f913b68
simplify some code
...
llvm-svn: 34914
2007-03-04 23:16:36 +00:00
8258b44b22
Speed up -instcombine by 20% by avoiding a particularly expensive passmgr call.
...
llvm-svn: 34902
2007-03-04 04:27:24 +00:00
da1d04a057
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.
llvm-svn: 34870
2007-03-03 05:27:34 +00:00
960a543037
add a top-level iteration loop to instcombine. This means that it will never
...
finish without combining something it is capable of.
llvm-svn: 34865
2007-03-03 02:04:50 +00:00
b15e2b182f
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.
llvm-svn: 34848
2007-03-02 21:28:56 +00:00
51f5457ad4
minor cleanup
...
llvm-svn: 34846
2007-03-02 19:59:19 +00:00
24f1a0e78f
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.
llvm-svn: 34796
2007-03-01 19:33:52 +00:00
c4d8e7e614
Fix InstCombine/2007-02-23-PhiFoldInfLoop.ll and PR1217
...
llvm-svn: 34546
2007-02-24 01:03:45 +00:00
99c6cf60f1
convert more vectors to smallvectors, 2.8% speedup
...
llvm-svn: 34333
2007-02-15 22:52:10 +00:00
af6094fe3f
change some vectors to smallvectors. This speeds up instcombine on 447.dealII
...
by 5%.
llvm-svn: 34332
2007-02-15 22:48:32 +00:00
7907e5fe07
switch an std::set to a SmallPtr set, this speeds up instcombine by 9.5%
...
on 447.dealII
llvm-svn: 34323
2007-02-15 19:41:52 +00:00
d84d35ba70
For PR1195:
...
Rename PackedType -> VectorType, ConstantPacked -> ConstantVector, and
PackedTyID -> VectorTyID. No functional changes.
llvm-svn: 34293
2007-02-15 02:26:10 +00:00
945e437c65
Generalize TargetData strings, to support more interesting forms of data.
...
Patch by Scott Michel.
llvm-svn: 34266
2007-02-14 05:52:17 +00:00
a06a8fd2d7
Eliminate use of ctors that take vectors.
...
llvm-svn: 34219
2007-02-13 02:10:56 +00:00
a731513406
stop using methods that take vectors.
...
llvm-svn: 34205
2007-02-12 22:56:41 +00:00
6e0123b17f
Simplify code by using value::takename
...
llvm-svn: 34176
2007-02-11 01:23:03 +00:00
83ac5ae9f3
Fix miscompilations of consumer-typeset, telecomm-gsm, and 176.gcc.
...
llvm-svn: 33902
2007-02-05 05:57:49 +00:00
0a28e90f2c
fix a miscompilation of 176.gcc
...
llvm-svn: 33900
2007-02-05 04:09:35 +00:00
3e009e8b8f
rewrite shift/shift folding, now that types are not signed.
...
llvm-svn: 33892
2007-02-05 00:57:54 +00:00
3f4e6e84dc
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.
llvm-svn: 33855
2007-02-04 00:40:42 +00:00
6c344e56b1
remove some dead code
...
llvm-svn: 33845
2007-02-03 23:28:07 +00:00
2f34b98cbf
Remove dead code and fix indentation per Chris' review comments.
...
llvm-svn: 33785
2007-02-02 14:41:37 +00:00
0d5f9237b6
Use short form of binary operator create functions.
...
llvm-svn: 33783
2007-02-02 14:08:20 +00:00
d5fea61d98
bugfix for reid's shift patch.
...
llvm-svn: 33779
2007-02-02 05:29:55 +00:00
2341c22ec7
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.
llvm-svn: 33776
2007-02-02 02:16:23 +00:00
c904205d28
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).
llvm-svn: 33771
2007-02-01 22:30:07 +00:00
416a8939c3
remove temporary vectors.
...
llvm-svn: 33715
2007-01-31 20:08:52 +00:00
4fc18a4cb8
Revert another incorrectly applied chunk, which fixes InstCombine/vec_insert_to_shuffle.ll
...
llvm-svn: 33705
2007-01-31 18:09:17 +00:00
f96f4a874c
eliminate temporary vectors
...
llvm-svn: 33693
2007-01-31 04:40:53 +00:00
aa17576933
Move symbolic constant folding code to libanalysis.
...
llvm-svn: 33688
2007-01-31 00:53:10 +00:00
024f4ab383
Adjust #includes to match movement of constant folding code from transformutils to libanalysis.
...
llvm-svn: 33680
2007-01-30 23:46:24 +00:00
Chris Lattner