035fe6f716
Peer through sext/zext when looking for not(cmp).
...
llvm-svn: 51819
2008-05-31 19:01:33 +00:00
26b8cd84b3
Add more i1 optimizations. add, sub, mul, s/udiv on i1 are now simplified away.
...
llvm-svn: 51817
2008-05-31 17:59:52 +00:00
df9242a833
Adding i1 is always Xor.
...
llvm-svn: 51816
2008-05-31 17:10:28 +00:00
ecdefb5df7
Implement PR2370: memmove(x,x,size) -> noop.
...
llvm-svn: 51636
2008-05-28 05:30:41 +00:00
f6ccd2580c
"ret (constexpr)" can't be folded into a Constant. Add a method to
...
Analysis/ConstantFolding to fold ConstantExpr's, then make instcombine use it
to try to use targetdata to fold constant expressions on void instructions.
Also extend the icmp(inttoptr, inttoptr) folding to handle the case where
int size != ptr size.
llvm-svn: 51559
2008-05-25 20:56:15 +00:00
87a099a057
Fix a serious brain-o. Obviously no-one reviewed my patch :(
...
This fixes PR2359
llvm-svn: 51536
2008-05-24 04:06:28 +00:00
3bf5512d87
Constant integer vectors may also be negated.
...
llvm-svn: 51476
2008-05-23 04:54:45 +00:00
4f3d878507
Revert X + X --> X * 2 optz'n which pessimizes heavily on x86.
...
llvm-svn: 51474
2008-05-23 04:34:58 +00:00
452fb32927
Implement X + X for vectors.
...
llvm-svn: 51472
2008-05-23 04:14:51 +00:00
2ec9a01173
Fix a recently added optimization to not crash on vectors.
...
llvm-svn: 51471
2008-05-23 03:26:47 +00:00
6d5f120c5c
Generalize the new code in instcombine's ComputeNumSignBits for handling
...
and/or to handle more cases (such as this add-sitofp.ll testcase), and
port it to selectiondag's ComputeNumSignBits.
llvm-svn: 51469
2008-05-23 02:28:01 +00:00
d01c562e48
Eliminate questionable syntax for stdin redirection. This probably also speeds things up a bit.
...
llvm-svn: 51357
2008-05-20 22:07:21 +00:00
0843435b36
Oops, commit the version of this test that actually works.
...
llvm-svn: 51351
2008-05-20 21:19:36 +00:00
81ab753b14
Port SelectionDAG's ComputeNumSignBits-using code to instcombine,
...
now that instcombine also has ComputeNumSignBits.
llvm-svn: 51350
2008-05-20 21:01:12 +00:00
1e427c3264
sabre brings to my attention that the 'tr' suffix is also obsolete
...
llvm-svn: 51349
2008-05-20 21:00:03 +00:00
f45ff35bfe
Rename the last test with .llx extension to .ll, resolve duplicate test by renaming to isnan2. Now that no test has llx ending there is no need to search for them from dg.exp too.
...
llvm-svn: 51328
2008-05-20 19:52:04 +00:00
7ac943fffd
Teach instcombine 4 new xforms:
...
(add (sext x), cst) --> (sext (add x, cst'))
(add (sext x), (sext y)) --> (sext (add int x, y))
(add double (sitofp x), fpcst) --> (sitofp (add int x, intcst))
(add double (sitofp x), (sitofp y)) --> (sitofp (add int x, y))
This generally reduces conversions. For example MiBench/telecomm-gsm
gets these simplifications:
HACK2: %tmp67.i142.i.i = sext i16 %tmp6.i141.i.i to i32 ; <i32> [#uses=1]
%tmp23.i139.i.i = sext i16 %tmp2.i138.i.i to i32 ; <i32> [#uses=1]
%tmp8.i143.i.i = add i32 %tmp67.i142.i.i, %tmp23.i139.i.i ; <i32> [#uses=3]
HACK2: %tmp67.i121.i.i = sext i16 %tmp6.i120.i.i to i32 ; <i32> [#uses=1]
%tmp23.i118.i.i = sext i16 %tmp2.i117.i.i to i32 ; <i32> [#uses=1]
%tmp8.i122.i.i = add i32 %tmp67.i121.i.i, %tmp23.i118.i.i ; <i32> [#uses=3]
HACK2: %tmp67.i.i190.i = sext i16 %tmp6.i.i189.i to i32 ; <i32> [#uses=1]
%tmp23.i.i187.i = sext i16 %tmp2.i.i186.i to i32 ; <i32> [#uses=1]
%tmp8.i.i191.i = add i32 %tmp67.i.i190.i, %tmp23.i.i187.i ; <i32> [#uses=3]
HACK2: %tmp67.i173.i.i.i = sext i16 %tmp6.i172.i.i.i to i32 ; <i32> [#uses=1]
%tmp23.i170.i.i.i = sext i16 %tmp2.i169.i.i.i to i32 ; <i32> [#uses=1]
%tmp8.i174.i.i.i = add i32 %tmp67.i173.i.i.i, %tmp23.i170.i.i.i ; <i32> [#uses=3]
HACK2: %tmp67.i152.i.i.i = sext i16 %tmp6.i151.i.i.i to i32 ; <i32> [#uses=1]
%tmp23.i149.i.i.i = sext i16 %tmp2.i148.i.i.i to i32 ; <i32> [#uses=1]
%tmp8.i153.i.i.i = add i32 %tmp67.i152.i.i.i, %tmp23.i149.i.i.i ; <i32> [#uses=3]
HACK2: %tmp67.i.i.i.i = sext i16 %tmp6.i.i.i.i to i32 ; <i32> [#uses=1]
%tmp23.i.i5.i.i = sext i16 %tmp2.i.i.i.i to i32 ; <i32> [#uses=1]
%tmp8.i.i7.i.i = add i32 %tmp67.i.i.i.i, %tmp23.i.i5.i.i ; <i32> [#uses=3]
This also fixes a bug in ComputeNumSignBits handling select and
makes it more aggressive with and/or.
llvm-svn: 51302
2008-05-20 05:46:13 +00:00
e35fe0f1c6
convert fptosi(sitofp x) -> x if the fp value has enough bits in its mantissa
...
to accurately represent the integer. This triggers 9 times in 471.omnetpp,
though 8 of those seem to be inlined from the same place.
llvm-svn: 51271
2008-05-19 20:25:04 +00:00
5920a78034
Fold FP comparisons where one operand is converted from an integer
...
type and the other operand is a constant into integer comparisons.
This happens surprisingly frequently (e.g. 10 times in 471.omnetpp),
which are things like this:
%tmp8283 = sitofp i32 %tmp82 to double
%tmp1013 = fcmp ult double %tmp8283, 0.0
Clearly comparing tmp82 against i32 0 is cheaper here.
this also triggers 8 times in gobmk, including this one:
%tmp375376 = sitofp i32 %tmp375 to double
%tmp377 = fcmp ogt double %tmp375376, 8.150000e+01
which is comparing an integer against 81.5 :).
llvm-svn: 51268
2008-05-19 20:18:56 +00:00
fc365b60dc
be more aggressive about transforming add -> or when the operands have no
...
intersecting bits. This triggers all over the place, for example in lencode,
with adds of stuff like:
%tmp580 = mul i32 %tmp579, 2
%tmp582 = and i32 %b8, 1
and
%tmp28 = shl i32 %abs.i, 1
%sign.0 = select i1 %tmp23, i32 1, i32 0
and
%tmp344 = shl i32 %tmp343, 2
%tmp346 = and i32 %tmp96, 3
etc.
llvm-svn: 51263
2008-05-19 20:01:56 +00:00
4b2a724fb8
Fix PR2339
...
llvm-svn: 51226
2008-05-18 04:11:26 +00:00
14b3604dcf
remove empty file?
...
llvm-svn: 51225
2008-05-18 04:10:18 +00:00
eb185ca5e9
Revert constant-folding change that will miscompile in some cases.
...
llvm-svn: 51223
2008-05-17 19:00:05 +00:00
1ba90bb69b
Constant fold inttoptr and ptrtoint.
...
llvm-svn: 51216
2008-05-17 09:03:26 +00:00
5c953b7d27
implement PR2328.
...
llvm-svn: 51176
2008-05-16 02:59:42 +00:00
3716952f10
Situations can arise when you have a function called that returns a 'void', but
...
is bitcast to return a floating point value. The result of the instruction may
not be used by the program afterwards, and LLVM will happily remove all
instructions except the call. But, on some platforms, if a value is returned as
a floating point, it may need to be removed from the stack (like x87). Thus, we
can't get rid of the bitcast even if there isn't a use of the value.
llvm-svn: 51134
2008-05-14 22:45:20 +00:00
8111b67ca8
Testcase for PR2303.
...
llvm-svn: 50951
2008-05-10 16:43:10 +00:00
aaba10e843
Implement PR2298. This transforms:
...
~x < ~y --> y < x
-x == -y --> x == y
llvm-svn: 50882
2008-05-09 05:19:28 +00:00
49a594e6ab
More than just loads can read from memory: readonly calls like strlen
...
also need to be checked for memory modifying instructions before we
can sink them. THis fixes the second half of PR2297.
llvm-svn: 50860
2008-05-08 17:37:37 +00:00
4fa09669d8
Make instcombine's DSE respect loads as well as stores. It is not safe to
...
delete the first store in:
store x -> p
load p
store y -> p
This is for PR2297.
llvm-svn: 50859
2008-05-08 17:20:30 +00:00
5a3eecdfd8
Fix a bug in the ComputeMaskedBits logic for multiply.
...
llvm-svn: 50793
2008-05-07 00:35:55 +00:00
cf0e3acf16
Correct the value of LowBits in srem and urem handling in
...
ComputeMaskedBits.
llvm-svn: 50692
2008-05-06 00:51:48 +00:00
1962c2be6a
Fix a mistake in the computation of leading zeros for udiv.
...
llvm-svn: 50591
2008-05-02 21:30:02 +00:00
2cdcf2bd5f
Update old-style syntax in some "not grep" tests.
...
llvm-svn: 50560
2008-05-01 23:50:07 +00:00
4be6ae4e6c
Fix an overaggressive SimplifyDemandedBits optimization on urem. This
...
fixes the 254.gap regression on x86 and the 403.gcc regression on x86-64.
llvm-svn: 50537
2008-05-01 19:13:24 +00:00
adf28cb71c
move some tests from libcall optimizer suite.
...
llvm-svn: 50516
2008-05-01 06:13:48 +00:00
2dc4426675
move lowering of llvm.memset -> store from simplify libcalls
...
to instcombine.
llvm-svn: 50472
2008-04-30 06:39:11 +00:00
d9e3b5c5bd
don't eliminate load from volatile value on paths where the load is dead.
...
This fixes the second half of PR2262
llvm-svn: 50430
2008-04-29 17:28:22 +00:00
53bcf3609a
make this test reduced and *valid*
...
llvm-svn: 50429
2008-04-29 17:25:32 +00:00
9233c124c9
fix a subtle volatile handling bug.
...
llvm-svn: 50428
2008-04-29 17:13:43 +00:00
e331a65c79
don't delete the last store to an alloca if the store is volatile.
...
llvm-svn: 50390
2008-04-29 04:58:38 +00:00
72ec3f4562
Teach InstCombine's ComputeMaskedBits what SelectionDAG's
...
ComputeMaskedBits knows about cttz, ctlz, and ctpop. Teach
SelectionDAG's ComputeMaskedBits what InstCombine's knows
about SRem. And teach them both some things about high bits
in Mul, UDiv, URem, and Sub. This allows instcombine and
dagcombine to eliminate sign-extension operations in
several new cases.
llvm-svn: 50358
2008-04-28 17:02:21 +00:00
2161d6c075
distill down the essense of this test.
...
llvm-svn: 50125
2008-04-23 03:03:42 +00:00
c4d3c1cbe0
new test
...
llvm-svn: 50123
2008-04-23 01:22:22 +00:00
1c89ca7295
Don't do: "(X & 4) >> 1 == 2 --> (X & 4) == 4" if there are more than one uses of the shift result.
...
llvm-svn: 50118
2008-04-23 00:38:06 +00:00
c3a439351c
optimize "p != gep p, ..." better. This allows us to compile
...
getelementptr-seteq.ll into:
define i1 @test(i64 %X, %S* %P) {
%C = icmp eq i64 %X, -1 ; <i1> [#uses=1]
ret i1 %C
}
instead of:
define i1 @test(i64 %X, %S* %P) {
%A.idx.mask = and i64 %X, 4611686018427387903 ; <i64> [#uses=1]
%C = icmp eq i64 %A.idx.mask, 4611686018427387903 ; <i1> [#uses=1]
ret i1 %C
}
And fixes the second half of PR2235. This speeds up the insertion sort
case by 45%, from 1.12s to 0.77s. In practice, this will significantly
speed up for loops structured like:
for (double *P = Base + N; P != Base; --P)
...
Which happens frequently for C++ iterators.
llvm-svn: 50079
2008-04-22 02:53:33 +00:00
b839c05a05
rename *.llx -> *.ll, last batch.
...
llvm-svn: 49971
2008-04-19 22:32:52 +00:00
99b7b3f03b
Teach InstCombine's ComputeMaskedBits to handle pointer expressions
...
in addition to integer expressions. Rewrite GetOrEnforceKnownAlignment
as a ComputeMaskedBits problem, moving all of its special alignment
knowledge to ComputeMaskedBits as low-zero-bits knowledge.
Also, teach ComputeMaskedBits a few basic things about Mul and PHI
instructions.
This improves ComputeMaskedBits-based simplifications in a few cases,
but more noticeably it significantly improves instcombine's alignment
detection for loads, stores, and memory intrinsics.
llvm-svn: 49492
2008-04-10 18:43:06 +00:00
2b72c05992
Handle a special case xor undef, undef -> 0. Technically this should be transformed to undef. But this is such a common idiom (misuse) we are going to handle it.
...
llvm-svn: 48791
2008-03-25 20:07:13 +00:00
8bf97c2324
Byebye llvm-upgrade!
...
llvm-svn: 48762
2008-03-25 04:26:08 +00:00
c3cf9f872a
Transform (zext (or (icmp), (icmp))) to (or (zext (cimp), (zext icmp))) if at least one of the (zext icmp) can be transformed to eliminate an icmp.
...
llvm-svn: 48715
2008-03-24 00:21:34 +00:00
c44160ce6e
Teach masked value is zero about add and sub, and use MVIZ to
...
simplify things like (X & 4) >> 1 == 2 --> (X & 4) == 4.
since it is obvious that the shift doesn't remove any bits.
llvm-svn: 48631
2008-03-21 05:19:58 +00:00
baa370b37a
Upgrade tests to not use llvm-upgrade.
...
llvm-svn: 48483
2008-03-18 03:45:45 +00:00
68a930b33e
The inst combining of inttoptr into GEP with one index was using the bit size of
...
the type instead of the byte size. This was causing troublesome mis-compilations.
True to form, this took 2 days to find and is a one-line fix. :-P
llvm-svn: 48354
2008-03-14 05:12:19 +00:00
aa6f5c9ddd
Remove llvm-upgrade and update tests.
...
llvm-svn: 48103
2008-03-09 08:16:40 +00:00
3e2d7c9f85
Commit the testcase too.
...
llvm-svn: 47988
2008-03-06 06:50:03 +00:00
d0b62a1552
Don't try to simplify urem and srem using arithmetic rules that don't work
...
under modulo (overflow). Fixes PR1933.
llvm-svn: 47987
2008-03-06 06:48:30 +00:00
5640bd186a
Remove llvm-upgrade and update test cases.
...
llvm-svn: 47793
2008-03-01 09:15:35 +00:00
c612571555
Folding or(fcmp,fcmp) only works if the operands of the fcmps are the same fp type.
...
llvm-svn: 47750
2008-02-29 06:09:11 +00:00
a39cff3aaa
fix this test so that the fn name doesn't match the regex
...
llvm-svn: 47608
2008-02-26 18:13:51 +00:00
3d9755f6ca
Really feed llvm-as with the testcase, do not let it read from stdin. This fixes the hangs seen on solaris10.
...
llvm-svn: 47604
2008-02-26 13:37:13 +00:00
aae582ba99
Testcase for Revision 47478.
...
llvm-svn: 47531
2008-02-23 10:59:51 +00:00
fefd0202c9
Correctly fold divide-by-constant, even when faced with overflow.
...
llvm-svn: 47287
2008-02-18 22:48:05 +00:00
024f8c8f09
optimize away stackrestore calls that have no intervening alloca or call.
...
llvm-svn: 47258
2008-02-18 06:12:38 +00:00
c8ec470b52
upgrade this test.
...
llvm-svn: 47257
2008-02-18 06:11:00 +00:00
cc22601bc3
Fold (-x + -y) -> -(x+y) which promotes better association, fixing
...
the second half of PR2047
llvm-svn: 47244
2008-02-17 21:03:36 +00:00
682a7dc653
Fix a bug compiling PR1978 (perhaps not the only one though) which
...
was incorrectly simplifying "x == (gep x, 1, i)" into false, even
though i could be negative. As it turns out, all the code to
handle this already existed, we just need to disable the incorrect
optimization case and let the general case handle it.
llvm-svn: 46739
2008-02-05 04:45:32 +00:00
56178bc6ad
Tag this test with the PR reference.
...
llvm-svn: 46688
2008-02-03 16:35:19 +00:00
3b59214320
There are some cases where icmp(add) can be folded into a new icmp. Handle them.
...
llvm-svn: 46687
2008-02-03 16:33:09 +00:00
17819d971e
eliminate additions of 0.0 when they are obviously dead. This has to be careful to
...
avoid turning -0.0 + 0.0 -> -0.0 which is incorrect.
llvm-svn: 46499
2008-01-29 06:52:45 +00:00
a116071547
this test is now compiled into the right thing.
...
llvm-svn: 46454
2008-01-28 17:38:46 +00:00
8ea81e8ba4
Handle some more combinations of extend and icmp. Fixes PR1940.
...
llvm-svn: 46431
2008-01-28 03:48:02 +00:00
710b441174
Fix PR1932 by disabling an xform invalid for fdiv.
...
llvm-svn: 46429
2008-01-28 00:58:18 +00:00
fa1e7eef30
Fold fptrunc(add (fpextend x), (fpextend y)) -> add(x,y), as GCC does.
...
llvm-svn: 46406
2008-01-27 05:29:54 +00:00
78712e5b59
Multiply can be evaluated in a different type, so long as the target type has
...
a smaller bitwidth.
llvm-svn: 46244
2008-01-22 05:08:48 +00:00
b5ca2e9fcb
I noticed that the trampoline straightening transformation could
...
drop attributes on varargs call arguments. Also, it could generate
invalid IR if the transformed call already had the 'nest' attribute
somewhere (this can never happen for code coming from llvm-gcc,
but it's a theoretical possibility). Fix both problems.
llvm-svn: 45973
2008-01-14 19:52:09 +00:00
92bd785323
Turn a memcpy from a double* into a load/store of double instead of
...
a load/store of i64. The later prevents promotion/scalarrepl of the
source and dest in many cases.
This fixes the 300% performance regression of the byval stuff on
stepanov_v1p2.
llvm-svn: 45945
2008-01-14 00:28:35 +00:00
5bc253c8f2
Fix PR1907, a nasty miscompilation because instcombine didn't
...
realize that ne & sgt was a signed comparison (it was only
looking at whether the left compare was signed).
llvm-svn: 45937
2008-01-13 20:59:02 +00:00
781f6549db
When turning a call to a bitcast function into a direct call,
...
if this becomes a varargs call then deal correctly with any
parameter attributes on the newly vararg call arguments.
llvm-svn: 45931
2008-01-13 08:02:44 +00:00
2940c5c56d
Implement PR1795, an instcombine hack for forming GEPs with integer pointer arithmetic.
...
llvm-svn: 45745
2008-01-08 07:23:51 +00:00
404eb05247
The transform that tries to turn calls to bitcast functions into
...
direct calls bails out unless caller and callee have essentially
equivalent parameter attributes. This is illogical - the callee's
attributes should be of no relevance here. Rework the logic, which
incidentally fixes a crash when removed arguments have attributes.
llvm-svn: 45658
2008-01-06 18:27:01 +00:00
55e5090fe8
When transforming a call to a bitcast function into
...
a direct call with cast parameters and cast return
value (if any), instcombine was prepared to cast any
non-void return value into any other, whether castable
or not. Add a new predicate for testing whether casting
is valid, and check it both for the return value and
(as a cleanup) for the parameters.
llvm-svn: 45657
2008-01-06 10:12:28 +00:00
e666bc272d
remove a couple more unsafe xforms in the face of overflow.
...
llvm-svn: 45613
2008-01-05 01:22:42 +00:00
e96658392d
dead calls to llvm.stacksave can be deleted, even though they
...
have potential side-effects.
llvm-svn: 45392
2007-12-29 00:59:12 +00:00
bc03f70a07
upgrade this test
...
llvm-svn: 45391
2007-12-29 00:57:06 +00:00
3de3f9981e
Add a testcase for my recent InstCombine fix, written by Nicholas.
...
llvm-svn: 45386
2007-12-28 21:08:43 +00:00
74b2ab59fd
implement InstCombine/shift-trunc-shift.ll. This allows
...
us to compile:
#include <math.h>
int t1(double d) { return signbit(d); }
into:
_t1:
movd %xmm0, %rax
shrq $63, %rax
ret
instead of:
_t1:
movd %xmm0, %rax
shrq $32, %rax
shrl $31, %eax
ret
on x86-64.
llvm-svn: 45311
2007-12-22 09:07:47 +00:00
7d82bc46b8
Implement review feedback, including additional transforms
...
(icmp slt (sub A B) 1) -> (icmp sle A B)
icmp sgt (sub A B) -1) -> (icmp sge A B)
and add testcase.
llvm-svn: 45256
2007-12-20 07:21:11 +00:00
74dbad9216
Remove an orthogonal transformation of the selection condition from my most recent submission.
...
llvm-svn: 45169
2007-12-18 20:30:28 +00:00
30291f4a30
Fix typos.
...
llvm-svn: 45159
2007-12-18 09:45:40 +00:00
8b09a464b4
Fold certain additions through selects (and their compares) so as to eliminate subtractions. This code is often produced by the SMAX expansion in SCEV.
...
This implements test/Transforms/InstCombine/2007-12-18-AddSelCmpSub.ll
llvm-svn: 45158
2007-12-18 09:34:41 +00:00
8e4847ee95
Make instcombine promote inline asm calls to 'nounwind'
...
calls. Remove special casing of inline asm from the
inliner. There is a potential problem: the verifier
rejects invokes of inline asm (not sure why). If an
asm call is not marked "nounwind" in some .ll, and
instcombine is not run, but the inliner is run, then
an illegal module will be created. This is bad but
I'm not sure what the best approach is. I'm tempted
to remove the check in the verifier...
llvm-svn: 45073
2007-12-16 15:51:49 +00:00
309e5a723b
1. "Upgrage" comments.
...
2. Using zero-extended value of Scale and unsigned division is safe provided
that Scale doesn't have the sign bit set.
Previously these 2 instructions:
%p = bitcast [100 x {i8,i8,i8}]* %x to i8*
%q = getelementptr i8* %p, i32 -4
were combined into:
%q = getelementptr [100 x { i8, i8, i8 }]* %x, i32 0,
i32 1431655764, i32 0
what was incorrect.
llvm-svn: 44936
2007-12-12 15:21:32 +00:00
6a6b3fb62b
Implement constant folding if vector<->vector bitcasts where the number
...
of source/dest elements changes. This implements
test/Transforms/InstCombine/bitcast-vector-fold.ll
llvm-svn: 44855
2007-12-11 07:29:44 +00:00
d2265b45ae
Fix PR1850 by removing an unsafe transformation from VMCore/ConstantFold.cpp.
...
Reimplement the xform in Analysis/ConstantFolding.cpp where we can use
targetdata to validate that it is safe. While I'm in there, fix some const
correctness issues and generalize the interface to the "operand folder".
llvm-svn: 44817
2007-12-10 22:53:04 +00:00
c00e8adfe0
Implement PR1822
...
llvm-svn: 44318
2007-11-25 21:27:53 +00:00
185eeac0f8
Fix PR1816. If a bitcast of a function only exists because of a
...
trivial difference in function attributes, allow calls to it to
be converted to direct calls. Based on a patch by Török Edwin.
While there, move the various lists of mutually incompatible
parameters etc out of the verifier and into ParameterAttributes.h.
llvm-svn: 44315
2007-11-25 14:10:56 +00:00
1985d96dc9
Fix PR1817.
...
llvm-svn: 44284
2007-11-22 23:47:13 +00:00
c53b18362a
Fix PR1800 by correcting mistaken logic.
...
llvm-svn: 44188
2007-11-16 06:04:17 +00:00
19ca5c7021
Better check
...
llvm-svn: 43897
2007-11-08 18:45:15 +00:00
8cf11aa330
Fix PR1780
...
llvm-svn: 43893
2007-11-08 17:39:28 +00:00
d8515f8e80
Implement PR1777 by detecting dependent phis that
...
all compute the same value.
llvm-svn: 43777
2007-11-06 21:52:06 +00:00
4decbc5002
Fix an abort in instcombine when folding creates a vector rem instruction.
...
llvm-svn: 43743
2007-11-05 23:16:33 +00:00
6ab19ed78d
Fix InstCombine/2007-10-31-StringCrash.ll by removing an obvious
...
(in hindsight) infinite recursion. Simplify the code.
llvm-svn: 43597
2007-11-01 02:30:35 +00:00
74709473ed
Fix InstCombine/2007-10-31-RangeCrash.ll
...
llvm-svn: 43596
2007-11-01 02:18:41 +00:00
9f39660c20
Add support for folding binary operators with vector zero operands.
...
llvm-svn: 43510
2007-10-30 19:00:49 +00:00
00860d7574
update testcase
...
llvm-svn: 43452
2007-10-29 17:06:35 +00:00
c541c3ee15
Model stacksave and stackrestore as both writing memory, since we
...
don't model their dependences on allocas correctly. This fixes
PR1745.
llvm-svn: 43442
2007-10-29 05:47:52 +00:00
9a641510bd
Fix PR1749 and InstCombine/2007-10-28-EmptyField.ll by handling
...
zero-length fields better.
llvm-svn: 43427
2007-10-29 02:40:02 +00:00
c62877e9da
Implement a couple of foldings for ordered and unordered comparisons,
...
implementing cases related to PR1738.
llvm-svn: 43289
2007-10-24 05:38:08 +00:00
c0ced49a14
This test now passes.
...
llvm-svn: 43183
2007-10-19 17:11:01 +00:00
9497767458
XFAIL for now.
...
llvm-svn: 43111
2007-10-18 00:48:43 +00:00
91ff13edcc
Apply "Instead of loading small c string constant, use integer constant directly" transformation while processing load instruction.
...
llvm-svn: 43070
2007-10-17 07:24:40 +00:00
ad618f66e6
Fix a bug in my patch last night that broke InstCombine/2007-10-12-Crash.ll
...
llvm-svn: 42920
2007-10-12 18:05:47 +00:00
3e99eb25ee
testcase for PR1728
...
llvm-svn: 42890
2007-10-12 05:29:53 +00:00
899cc56612
Lower memcpy if it makes sense.
...
llvm-svn: 42864
2007-10-11 17:21:57 +00:00
416b9f0410
Testcase for PR1678.
...
llvm-svn: 42171
2007-09-20 18:56:24 +00:00
2ac2652779
Instcombine x-((x/y)*y) into a remainder operator.
...
llvm-svn: 42035
2007-09-17 17:31:57 +00:00
94580c7522
Test that a call to a trampoline is turned into a call to
...
the underlying nested function.
llvm-svn: 41846
2007-09-11 15:07:50 +00:00
52fe869374
Fix a buggy constant folding transformation when handling aliases.
...
llvm-svn: 41818
2007-09-10 23:42:42 +00:00
85a51e0060
Don't zap back to back volatile load/stores
...
llvm-svn: 41759
2007-09-07 05:33:03 +00:00
b0b066eaaa
When the two operands of an icmp are equal, there are five possible predicates
...
that would make the icmp true. Fixes PR1637.
llvm-svn: 41740
2007-09-06 01:10:22 +00:00
6480cc6f8c
Change all floating constants that are not exactly
...
representable to use hex format.
llvm-svn: 41722
2007-09-05 17:50:36 +00:00
f9dd170e36
Convert tests using "| wc -l | grep ..." to use the count script.
...
llvm-svn: 41097
2007-08-15 13:36:28 +00:00
1399f64e3b
oops, forgot to commit this.
...
llvm-svn: 41034
2007-08-12 16:55:14 +00:00
99c8ee2977
Transform a load from an undef/zero global into an undef/global even if we
...
have complex pointer manipulation going on. This allows us to compile
stuff like this:
__m128i foo(__m128i x){
static const unsigned int c_0[4] = { 0, 0, 0, 0 };
__m128i v_Zero = _mm_loadu_si128((__m128i*)c_0);
x = _mm_unpacklo_epi8(x, v_Zero);
return x;
}
into:
_foo:
xorps %xmm1, %xmm1
punpcklbw %xmm1, %xmm0
ret
llvm-svn: 41022
2007-08-11 18:48:48 +00:00
a8e4b4bc7b
when we see a unaligned load from an insufficiently aligned global or
...
alloca, increase the alignment of the load, turning it into an aligned load.
This allows us to compile:
#include <xmmintrin.h>
__m128i foo(__m128i x){
static const unsigned int c_0[4] = { 0, 0, 0, 0 };
__m128i v_Zero = _mm_loadu_si128((__m128i*)c_0);
x = _mm_unpacklo_epi8(x, v_Zero);
return x;
}
into:
_foo:
punpcklbw _c_0.5944, %xmm0
ret
.data
.lcomm _c_0.5944,16,4 # c_0.5944
instead of:
_foo:
movdqu _c_0.5944, %xmm1
punpcklbw %xmm1, %xmm0
ret
.data
.lcomm _c_0.5944,16,2 # c_0.5944
llvm-svn: 40971
2007-08-09 19:05:49 +00:00
8052019a20
It's safe to fold not of fcmp.
...
llvm-svn: 40870
2007-08-06 20:04:16 +00:00
7132e00de7
This is the patch to provide clean intrinsic function overloading support in LLVM. It cleans up the intrinsic definitions and generally smooths the process for more complicated intrinsic writing. It will be used by the upcoming atomic intrinsics as well as vector and float intrinsics in the future.
...
This also changes the syntax for llvm.bswap, llvm.part.set, llvm.part.select, and llvm.ct* intrinsics. They are automatically upgraded by both the LLVM ASM reader and the bitcode reader. The test cases have been updated, with special tests added to ensure the automatic upgrading is supported.
llvm-svn: 40807
2007-08-04 01:51:18 +00:00
9ea0287e25
I don't have time to restore this functionality right now.
...
llvm-svn: 40743
2007-08-02 17:43:39 +00:00
498137dbfc
Reduced testcase for PR1594
...
llvm-svn: 40740
2007-08-02 17:11:24 +00:00
b0418fc607
Enhance instcombine to be more aggressive about folding casts of
...
operations of casts. This implements InstCombine/zext-fold.ll
llvm-svn: 40726
2007-08-02 06:11:14 +00:00
549e775e67
Fix a bug in GetKnownAlignment of packed structs.
...
llvm-svn: 40649
2007-07-31 20:13:21 +00:00
7649abce46
This xform isn't safe, removing it.
...
llvm-svn: 40378
2007-07-21 21:27:27 +00:00
e31a61eeca
Optimize alignment of loads and stores.
...
llvm-svn: 40102
2007-07-20 16:34:21 +00:00
d8bdf53335
rename function to avoid llvm-upgrade warning
...
llvm-svn: 39895
2007-07-16 04:09:00 +00:00
d4fef8dbca
Implement shift-simplify.ll:test[45].
...
First teach instcombine that sign bit checks only demand the
sign bit, this allows simplify demanded bits to hack on
expressions better.
Second, teach instcombine that ashr is useless if only the
sign bit is demanded.
llvm-svn: 39880
2007-07-15 20:54:51 +00:00
06205d5567
Implement shift-simplify.ll:test3, turning:
...
(X << 31) <s 0 --> (X&1) != 0
This happens dozens of times in the CFE.
llvm-svn: 39879
2007-07-15 20:42:37 +00:00
2660cef6d7
Convert .cvsignore files
...
llvm-svn: 37801
2007-06-29 16:35:07 +00:00
181ebd6f88
new testcase miscompiled by instcombine, reduced from perl
...
llvm-svn: 37691
2007-06-21 18:09:25 +00:00
9923af42cf
add vector versions of this test
...
llvm-svn: 37588
2007-06-15 06:22:32 +00:00
a8de4cccd9
testcase for PR1510
...
llvm-svn: 37583
2007-06-15 05:57:20 +00:00
be59acbfcc
Add a test for PR1499.
...
llvm-svn: 37473
2007-06-06 17:10:02 +00:00
faa31904e4
new testcase
...
llvm-svn: 37255
2007-05-19 06:50:37 +00:00
120548e508
New testcase that crashes instcombine
...
llvm-svn: 37056
2007-05-15 00:15:49 +00:00
b6d85ad1e1
new testcase that crashes instcombine
...
llvm-svn: 36983
2007-05-11 05:55:38 +00:00
2601579ec9
remove an old xfailed test
...
llvm-svn: 36810
2007-05-05 22:42:02 +00:00
3dde023021
un-xfail this.
...
llvm-svn: 36808
2007-05-05 22:41:13 +00:00
8b332d32be
new testacse for PR1384
...
llvm-svn: 36774
2007-05-05 01:59:05 +00:00
1df6c1c5b0
new testcase
...
llvm-svn: 36520
2007-04-28 00:54:45 +00:00
6e87ec4351
For PR1319:
...
Remove && from the end of the lines to prevent tests from throwing run
lines into the background. Also, clean up places where the same command
is run multiple times by using a temporary file.
llvm-svn: 36142
2007-04-16 17:36:08 +00:00
ede8c3b92c
For PR1319:
...
Make use of the END. facility on all files > 1K so that we aren't wasting CPU
cycles searching for RUN: lines that we'll never find.
llvm-svn: 36059
2007-04-15 07:38:21 +00:00
1114b48736
Fix this test in a slightly more obvious way.
...
llvm-svn: 36058
2007-04-15 07:37:04 +00:00
8e58ad31ae
This test case is incorrect. Remove it.
...
llvm-svn: 36048
2007-04-15 05:59:49 +00:00
d025c07cce
Keep lines a reasonable length.
...
llvm-svn: 36043
2007-04-15 04:54:53 +00:00
610e1240ed
Patch supplied by gabor.
...
llvm-svn: 36042
2007-04-15 03:09:23 +00:00
efcb4f6ed4
new testcase
...
llvm-svn: 36039
2007-04-15 01:00:37 +00:00
0f6ccef96c
XFAIL this for now.
...
llvm-svn: 36036
2007-04-14 23:57:41 +00:00
45ab14d084
new testcase
...
llvm-svn: 36024
2007-04-14 23:00:51 +00:00
3fc53d6c53
Changes to fix problems with "make check". Apparently you can redefine
...
functions and Tcl's just tickled with that. The fix is to give the "new"
test system a different interface function name.
llvm-svn: 36022
2007-04-14 22:51:29 +00:00
8a08819105
manually upgrade test. Add a new test2. I have no way to see if this works
...
because of the tclification. :(
llvm-svn: 36019
2007-04-14 22:27:33 +00:00
af1a99f3a7
This test should have been updated with llvm 1.7!
...
llvm-svn: 36014
2007-04-14 20:21:37 +00:00
91948d4cad
For PR1319:
...
Upgrade tests to work with new llvm.exp version of llvm_runtest.
llvm-svn: 36013
2007-04-14 20:13:02 +00:00
be88bc4cb4
This test needs to use egrep.
...
llvm-svn: 36012
2007-04-14 20:02:51 +00:00
2441c0ae3e
Fix a test test llvm.exp found.
...
llvm-svn: 36006
2007-04-14 18:33:31 +00:00
7e4bde71c5
bool -> i1 (found by llvm.exp)
...
llvm-svn: 36005
2007-04-14 18:30:06 +00:00
26f762270f
Fix a syntax error that llvm.exp found.
...
llvm-svn: 36004
2007-04-14 18:28:16 +00:00
0c0fe0afa7
Fix an "already-upgraded" test that llvm.exp found.
...
llvm-svn: 36003
2007-04-14 18:26:02 +00:00
a930c3d4e4
testcase for PR1201
...
llvm-svn: 35980
2007-04-14 00:19:36 +00:00
d029c7e666
Make the llvm-runtest function much more amenable by eliminating all the
...
global variables that needed to be passed in. This makes it possible to
add new global variables with only a couple changes (Makefile and llvm-dg.exp)
instead of touching every single dg.exp file.
llvm-svn: 35918
2007-04-11 19:56:59 +00:00
45ae13bb41
adjust test
...
llvm-svn: 35907
2007-04-11 16:04:04 +00:00
81f14c63da
sext of compares.
...
llvm-svn: 35892
2007-04-11 06:57:54 +00:00
764ec15b3f
new testcase
...
llvm-svn: 35889
2007-04-11 06:52:24 +00:00
ec0020433b
new testcase
...
llvm-svn: 35851
2007-04-09 23:51:49 +00:00
e04c652f5d
new testcase for PR1304
...
llvm-svn: 35791
2007-04-09 01:37:35 +00:00
418bf4eb1c
new testcase for PR1286
...
llvm-svn: 35787
2007-04-09 01:10:13 +00:00
659ff4ca8d
this xform is correct, not an xfail
...
llvm-svn: 35766
2007-04-08 08:02:39 +00:00
b79728b1ae
tweak this to test the right thing.
...
llvm-svn: 35762
2007-04-08 07:52:40 +00:00
8ca3d48984
new testcase, should simplify down to a xor/and/xor sequence.
...
llvm-svn: 35759
2007-04-08 07:45:36 +00:00
992b451e33
new testcase, update old one.
...
llvm-svn: 35699
2007-04-06 18:56:54 +00:00
9da1cde86c
Any add is wrong, regardless of type.
...
llvm-svn: 35671
2007-04-04 20:40:44 +00:00
62c300a415
Get it right...
...
llvm-svn: 35670
2007-04-04 20:35:31 +00:00
9234629e60
Test for transformConstExprCastCall fix.
...
llvm-svn: 35669
2007-04-04 19:18:16 +00:00
6f98cd3710
Add new test.
...
llvm-svn: 35664
2007-04-04 16:11:23 +00:00
d4594adf43
new testcase for PR1253
...
llvm-svn: 35611
2007-04-03 01:45:32 +00:00
a7152a90d1
fix this testcase so it passes
...
llvm-svn: 35604
2007-04-02 20:46:28 +00:00
2d81c6d706
creative way to add one.
...
llvm-svn: 35583
2007-04-02 05:35:08 +00:00
e51961b5ba
Fix illegal assembly syntax.
...
llvm-svn: 35581
2007-04-02 03:24:47 +00:00
a3bc850712
Add a test case to make sure that constant folding of the bit counting
...
intrinsics works.
llvm-svn: 35577
2007-04-02 01:45:31 +00:00
a5f996bd27
Revert the name changes for llvm.bswap to allow (and test) llvm-upgrade of
...
this intrinsic.
llvm-svn: 35566
2007-04-02 00:51:15 +00:00
c3d87685ad
For PR1297:
...
Update these test cases to use proper signatures for bswap which is now
and overloaded intrinsic. Its name must be of the form llvm.bswap.i32.i32
since both the parameter and the result or of type "iAny". Also, the
bit counting intrinsics changed to always return i32.
llvm-svn: 35548
2007-04-01 07:36:28 +00:00
9729bdd8e3
New testcase
...
llvm-svn: 35535
2007-04-01 05:34:53 +00:00
44259a29c0
Remove use of implementation keyword.
...
llvm-svn: 35412
2007-03-28 02:38:26 +00:00
4ba1036a34
don't use 'not' when we can use a positive test
...
llvm-svn: 35402
2007-03-28 01:43:43 +00:00
90bb12c2e7
new test case for PR1280
...
llvm-svn: 35401
2007-03-28 01:43:35 +00:00
94a8cb4b4e
For PR1280:
...
Remove test cases for and/xor/add -> trunc/sext that use bit widths that
the targets cannot code gen.
llvm-svn: 35399
2007-03-28 01:35:28 +00:00
e01d0e8c39
Another test case for PR1271 where bad shift masks were generated.
...
llvm-svn: 35372
2007-03-26 23:48:52 +00:00
d9fe01c7a4
Fix this test case to match output after a bug was fixed.
...
llvm-svn: 35359
2007-03-26 18:04:38 +00:00
820ae03fda
Fix testsuite hang.
...
llvm-svn: 35355
2007-03-26 10:59:13 +00:00
0bfa19eb13
Test case for PR1271 involving construction of a bad mask to replace a
...
shift instruction.
llvm-svn: 35349
2007-03-26 05:32:16 +00:00
726b0a7fa4
Add a test case for PR1271 (necessary, but not sufficient).
...
llvm-svn: 35343
2007-03-25 21:30:41 +00:00
f323838c4c
new testcase
...
llvm-svn: 35340
2007-03-25 20:42:40 +00:00
e3d00119e6
Remove the last vestiges of this directory.
...
llvm-svn: 35309
2007-03-24 23:07:49 +00:00
562b715dd1
Add more test cases for APIntified InstCombine.
...
llvm-svn: 35288
2007-03-23 21:57:47 +00:00
ea8b07ee6b
Add test case for testing InstCombine with arbitrary precision integer
...
types. These tests mimic the integer test cases in the normal InstCombine
test suite but use "strange" integer bit widths.
Most tests written by Zhou Sheng, a few by me.
llvm-svn: 35284
2007-03-23 20:48:34 +00:00
02b0b57101
Make this test actually match the generated code.
...
llvm-svn: 35263
2007-03-22 02:53:05 +00:00
fa9925e263
Test case for PR1248
...
llvm-svn: 35251
2007-03-22 00:49:40 +00:00
09f4eb1098
Make this test a little simpler/faster.
...
llvm-svn: 35193
2007-03-19 23:36:19 +00:00
eb0a221186
Add test case for PR1261, currently XFAILed.
...
llvm-svn: 35192
2007-03-19 23:28:16 +00:00
1ada0693ab
new testcase
...
llvm-svn: 35144
2007-03-18 22:50:57 +00:00
091e75bbde
testcase for PR1244
...
llvm-svn: 35081
2007-03-13 14:25:35 +00:00
509acc186e
Add a test case for a particular udiv/select transform.
...
llvm-svn: 34935
2007-03-05 22:51:08 +00:00
3a8b0c7607
new testcase
...
llvm-svn: 34918
2007-03-05 00:01:38 +00:00
05e93d7f05
new testcase: instcombine should remove all the casts.
...
llvm-svn: 34869
2007-03-03 05:24:06 +00:00
c1991789c5
instcombine doesn't do CSE, simplify unrelated detail
...
llvm-svn: 34867
2007-03-03 02:27:02 +00:00
3fec2056a4
testcase for pr1217
...
llvm-svn: 34545
2007-02-24 01:03:11 +00:00
83908e664f
fix this testcase
...
llvm-svn: 34530
2007-02-23 19:39:24 +00:00
f7a5332b53
missed cast elimination
...
llvm-svn: 34490
2007-02-22 15:17:45 +00:00
682918f99b
update to new t-d strings.
...
llvm-svn: 34290
2007-02-15 00:54:16 +00:00
15a3af28d7
This really only affects pointers in high memory, and only llvm 1.9, but make a regression for it anyway
...
llvm-svn: 34014
2007-02-07 22:23:47 +00:00
cb4d3f2902
Prepare for PR411
...
llvm-svn: 33865
2007-02-04 02:11:13 +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
9a677c585c
new testcase for serious code pessimization
...
llvm-svn: 33770
2007-02-01 22:29:26 +00:00
af6a408117
For PR411:
...
Update these tests to not use the same name even though the type of the
value differs. After PR411 hits, type planes will be gone and it will be
illegal for a name to be used twice, regardless of type.
llvm-svn: 33660
2007-01-30 16:16:01 +00:00
d50698107e
Testcase for an instcombine miscompilation reduced by Anton.
...
llvm-svn: 33590
2007-01-27 23:07:12 +00:00
ce380568b5
For PR761:
...
Remove "target endian/pointersize" or add "target datalayout" to make
the test parse properly or set the datalayout because defaults changes.
For PR645:
Make global names use the @ prefix.
For llvm-upgrade changes:
Fix test cases or completely remove use of llvm-upgrade for test cases
that cannot survive the new renaming or upgrade capabilities.
llvm-svn: 33533
2007-01-26 08:25:06 +00:00
bb4e2a547f
new testcase that causes instcombine to infinitely loop
...
llvm-svn: 33342
2007-01-18 22:16:03 +00:00
83b3d82672
Regression is gone, don't try to find it on clean target.
...
llvm-svn: 33296
2007-01-17 07:59:14 +00:00
Nick Lewycky