Commit Graph

69995 Commits

Author SHA1 Message Date
Chris Lattner
a18da59d40 missed a header
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125471 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-13 22:30:09 +00:00
Chris Lattner
0a9481f44f Enhance ComputeMaskedBits to know that aligned frameindexes
have their low bits set to zero.  This allows us to optimize
out explicit stack alignment code like in stack-align.ll:test4 when
it is redundant.

Doing this causes the code generator to start turning FI+cst into
FI|cst all over the place, which is general goodness (that is the
canonical form) except that various pieces of the code generator
don't handle OR aggressively.  Fix this by introducing a new
SelectionDAG::isBaseWithConstantOffset predicate, and using it
in places that are looking for ADD(X,CST).  The ARM backend in
particular was missing a lot of addressing mode folding opportunities
around OR.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125470 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-13 22:25:43 +00:00
Tobias Grosser
eafbe659f8 Adapt docs to '-loopsimplify -> -loop-simplify' change
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125469 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-13 20:57:25 +00:00
Chris Lattner
d8c7ff0019 fix thinko :)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125466 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-13 19:53:36 +00:00
Chris Lattner
e075118489 Revisit my fix for PR9028: the issue is that DAGCombine was
generating i8 shift amounts for things like i1024 types.  Add
an assert in getNode to prevent this from occuring in the future,
fix the buggy transformation, revert my previous patch, and
document this gotcha in ISDOpcodes.h


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125465 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-13 19:09:16 +00:00
Chris Lattner
e5116f840e remove a now-unneccesary cast.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125464 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-13 18:30:09 +00:00
Duncan Sands
5380d28070 Remove pointless blank line.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125463 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-13 18:11:05 +00:00
Duncan Sands
52fb846578 Teach instsimplify that X+Y>=X+Z is the same as Y>=Z if neither side overflows,
plus some variations of this.  According to my auto-simplifier this occurs a lot
but usually in combination with max/min idioms.  Because max/min aren't handled
yet this unfortunately doesn't have much effect in the testsuite.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125462 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-13 17:15:40 +00:00
Nadav Rotem
d239e5af64 Fix test
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125460 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-13 16:13:16 +00:00
Nadav Rotem
bc53ca1b53 Fix a regression from r125393;
It caused a crash in MultiSource/Benchmarks/Bullet.
Opt hit an assertion with "opt -std-compile-opts" because
Constant::getAllOnesValue doesn't know how to handle floats.

This patch added a test to reproduce the problem and a check that the
destination vector is of integer type.

Thank you Benjamin!



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125459 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-13 15:45:34 +00:00
Chris Lattner
915eeb4887 when legalizing extremely wide shifts, make sure that
the shift amounts are in a suitably wide type so that
we don't generate out of range constant shift amounts.

This fixes PR9028.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125458 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-13 09:10:56 +00:00
Chris Lattner
d302773885 fix visitShift to properly zero extend the shift amount if the provided operand
is narrower than the shift register.  Doing an anyext provides undefined bits in
the top part of the register.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125457 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-13 09:02:52 +00:00
Chris Lattner
c55f58b1a6 improve solaris support, from PR9109, patch by Yuri!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125456 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-13 08:38:44 +00:00
Chris Lattner
b289b40744 add PR#
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125455 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-13 08:27:31 +00:00
Chris Lattner
bb75d337c4 implement instcombine folding for things like (x >> c) < 42.
We were previously simplifying divisions, but not right shifts!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125454 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-13 08:07:21 +00:00
Chris Lattner
16e036fa8f add a helper method.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125453 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-13 08:04:16 +00:00
Argyrios Kyrtzidis
d91ef79c43 Wrap the struct in an anonymous namespace.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125452 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-13 07:51:19 +00:00
Chris Lattner
74542aa500 refactor some code out into a helper method.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125451 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-13 07:43:07 +00:00
Chris Lattner
8ebaf90958 teach SCEV that the scale and addition of an inbounds gep don't NSW.
This fixes a FIXME in scev-aa.ll (allowing a new no-alias result) and
generally makes things more precise.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125449 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-13 03:14:49 +00:00
Reid Kleckner
26f23100ac Add encodings and mnemonics for FXSAVE64 and FXRSTOR64.
These are just FXSAVE and FXRSTOR with REX.W prefixes.  These versions use
64-bit pointer values instead of 32-bit pointer values in the memory map they
dump and restore.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125446 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-12 23:24:13 +00:00
Venkatraman Govindaraju
cc5bd4a561 Prevent IMPLICIT_DEF/KILL to become a delay filler instruction in SPARC backend.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125444 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-12 19:02:33 +00:00
Daniel Dunbar
d02be24cad SimplifyLibCalls: Add missing legalize check on various printf to puts and
putchar transforms, their return values are not compatible.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125442 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-12 18:19:57 +00:00
Daniel Dunbar
43186a4ea9 tests: FileCheckize
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125441 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-12 18:19:53 +00:00
Rafael Espindola
2e3066b319 Preserve aliases if needed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125439 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-12 18:03:13 +00:00
Benjamin Kramer
d800cf0a50 Add a note about SSE4.1 roundss/roundsd.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125438 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-12 17:58:16 +00:00
Nadav Rotem
609d54ee1e A fix for 9165.
The DAGCombiner created illegal BUILD_VECTOR operations.
The patch added a check that either illegal operations are
allowed or that the created operation is legal.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125435 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-12 14:40:33 +00:00
Jim Grosbach
f922c47143 AsmMatcher custom operand parser failure enhancements.
Teach the AsmMatcher handling to distinguish between an error custom-parsing
an operand and a failure to match. The former should propogate the error
upwards, while the latter should continue attempting to parse with
alternative matchers.

Update the ARM asm parser accordingly.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125426 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-12 01:34:40 +00:00
Rafael Espindola
d7401b35e3 Fix a silly bug I introduced when dropping std::string.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125420 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-12 00:19:56 +00:00
Chris Lattner
776b7df0e7 attempt to capture recent discussion about overflow and inbounds geps.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125412 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-11 21:50:52 +00:00
Benjamin Kramer
b6c8cb4422 Also fold (A+B) == A -> B == 0 when the add is commuted.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125411 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-11 21:46:48 +00:00
Chris Lattner
1021236c74 Per discussion with Dan G, inbounds geps *certainly* can have
unsigned overflow (e.g. "gep P, -1"), and while they can have
signed wrap in theoretical situations, modelling an AddRec as
not having signed wrap is going enough for any case we can 
think of today.  In the future if this isn't enough, we can
revisit this.  Modeling them as having NUW isn't causing any
known problems either FWIW.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125410 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-11 21:43:33 +00:00
Chris Lattner
6aa68a7647 When lowering an inbounds gep, the intermediate adds can have
unsigned overflow (e.g. due to a negative array index), but
the scales on array size multiplications are known to not
sign wrap.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125409 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-11 21:37:43 +00:00
Jim Grosbach
84cb033bf3 Tidy out asm matcher .inc output.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125408 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-11 21:31:55 +00:00
Zhanyong Wan
63cc3a85cc Adds llvm::sys::path::is_separator() to test whether a char is a path separator
on the host OS.  Reviewed by dgregor.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125406 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-11 21:24:40 +00:00
Nate Begeman
7973f350b7 Implement sdiv & udiv for <4 x i16> and <8 x i8> NEON vector types.
This avoids moving each element to the integer register file and calling __divsi3 etc. on it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125402 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-11 20:53:29 +00:00
Nadav Rotem
f94fdb6f57 SimplifySelectOps can only handle selects with a scalar condition. Add a check
that the condition is not a vector.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125398 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-11 19:57:47 +00:00
Nadav Rotem
d2f27ead2d Fix 9173.
Add more folding patterns to constant expressions of vector selects and vector
bitcasts.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125393 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-11 19:37:55 +00:00
Nadav Rotem
5a4552ca42 Fix #9190
The bug happens when the DAGCombiner attempts to optimize one of the patterns
of the SUB opcode. It tries to create a zero of type v2i64. This type is legal
on 32bit machines, but the initializer of this vector (i64) is target dependent.
Currently, the initializer attempts to create an i64 zero constant, which fails.
Added a flag to tell the DAGCombiner to create a legal zero, if we require that
the pass would generate legal types.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125391 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-11 19:20:37 +00:00
Nadav Rotem
015b4b5a05 Test commit.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125389 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-11 19:11:57 +00:00
Jim Grosbach
de2f5f423b More whitespace cleanup...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125388 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-11 19:05:56 +00:00
Jim Grosbach
e5ec5a4177 Remove trailing whitespace.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125385 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-11 18:45:44 +00:00
Douglas Gregor
78b9649d46 Poison the relational operators ==, !=, <, <=, >=, > on llvm::Optional
objects, since they'll end up using the implicit conversion to "bool"
and causing some very "fun" surprises.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125380 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-11 18:13:20 +00:00
Cameron Zwarich
71132af89a Make LoopUnswitch preserve ScalarEvolution by just forgetting everything about
a loop when unswitching it. It only does this in the complex case, because
everything should be fine already in the simple case.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125369 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-11 06:08:28 +00:00
Cameron Zwarich
fae0abe8eb LoopInstSimplify preserves ScalarEvolution.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125368 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-11 06:08:25 +00:00
Chris Lattner
354c5b9bcf fix dumping of METADATA_ATTACHMENT2 names, patch by Peter Housel!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125367 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-11 05:50:01 +00:00
Chris Lattner
33a8f3385b make ConstantExpr::replaceUsesOfWithOnConstant preserve the inbounds
flag.  Noticed by Jin Gu Kang!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125366 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-11 05:37:21 +00:00
Chris Lattner
1f78d51be6 make the constantexpr interfaces for inbounds GEPs follow the same style
as other constantexpr flags, reducing redundancy.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125365 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-11 05:34:33 +00:00
Rafael Espindola
ef1860a117 Remove std::string version of getNameWithPrefix.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125363 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-11 05:23:09 +00:00
Daniel Dunbar
cd3e639fe7 Disable this test for now...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125361 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-11 02:59:08 +00:00
Evan Cheng
c143dd4f63 Fix buggy fcopysign lowering.
This
define float @foo(float %x, float %y) nounwind readnone {
entry:
  %0 = tail call float @copysignf(float %x, float %y) nounwind readnone
  ret float %0
}

Was compiled to:
    vmov     s0, r1
    bic      r0, r0, #-2147483648
    vmov     s1, r0
    vcmpe.f32    s0, #0
    vmrs         apsr_nzcv, fpscr
    it           lt
    vneglt.f32   s1, s1
    vmov         r0, s1
    bx           lr

This fails to copy the sign of -0.0f because it's lost during the float to int
conversion. Also, it's sub-optimal when the inputs are in GPR registers.

Now it uses integer and + or operations when it's profitable. And it's correct!
    lsrs    r1, r1, #31
    bfi     r0, r1, #31, #1
    bx      lr
rdar://8984306


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125357 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-11 02:28:55 +00:00