Dan Gohman
48f8222293
Re-apply 70645, converting ScalarEvolution to use
...
CallbackVH, with fixes. allUsesReplacedWith need to
walk the def-use chains and invalidate all users of a
value that is replaced. SCEVs of users need to be
recalcualted even if the new value is equivalent. Also,
make forgetLoopPHIs walk def-use chains, since any
SCEV that depends on a PHI should be recalculated when
more information about that PHI becomes available.
llvm-svn: 70927
2009-05-04 22:30:44 +00:00
Dan Gohman
a30370bc33
Constify a bunch of SCEV-using code.
...
llvm-svn: 70919
2009-05-04 22:02:23 +00:00
Chris Lattner
fa552d728d
fix some problems spotted by Duncan and Nicolas Geoffray
...
llvm-svn: 70872
2009-05-04 16:29:24 +00:00
Chris Lattner
d579cb1167
* Sink 4 duplicates of edge threading validity checks and DOUT prints into
...
ThreadEdge directly. This shares the code, but is just a refactoring.
* Make JumpThreading compute the set of loop headers and avoid threading
across them. This prevents jump threading from forming irreducible
loops (goodness) but also prevents it from threading in other cases that
are beneficial (see the comment above FindFunctionBackedges).
llvm-svn: 70820
2009-05-04 02:28:08 +00:00
Chris Lattner
351134ba93
Factor loop backedge finding out of CodeGenPrepare into a new
...
FindFunctionBackedges function.
llvm-svn: 70819
2009-05-04 02:25:58 +00:00
Dan Gohman
5036695c32
Revert r70645 for now; it's causing a variety of regressions.
...
llvm-svn: 70661
2009-05-03 05:46:20 +00:00
Nick Lewycky
431f97e4f0
Revert r70630. Go back to appending ".b" to internal globals when shrinking
...
them to bool.
llvm-svn: 70653
2009-05-03 03:49:08 +00:00
Dan Gohman
e9a38d16fe
Convert ScalarEvolution to use CallbackVH for its internal map. This
...
makes ScalarEvolution::deleteValueFromRecords, and it's code that
subtly needed to be called before ReplaceAllUsesWith, unnecessary.
It also makes ValueDeletionListener unnecessary.
llvm-svn: 70645
2009-05-02 21:19:20 +00:00
Dan Gohman
b17dcbdadc
The second argument to RecursivelyDeleteTriviallyDeadInstructions has
...
a default value, and will hopefully be going away soon.
llvm-svn: 70642
2009-05-02 20:22:10 +00:00
Dan Gohman
ff08995589
Previously, RecursivelyDeleteDeadInstructions provided an option
...
of returning a list of pointers to Values that are deleted. This was
unsafe, because the pointers in the list are, by nature of what
RecursivelyDeleteDeadInstructions does, always dangling. Replace this
with a simple callback mechanism. This may eventually be removed if
all clients can reasonably be expected to use CallbackVH.
Use this to factor out the dead-phi-cycle-elimination code from LSR
utility function, and generalize it to use the
RecursivelyDeleteTriviallyDeadInstructions utility function.
This makes LSR more aggressive about eliminating dead PHI cycles;
adjust tests to either be less trivial or to simply expect fewer
instructions.
llvm-svn: 70636
2009-05-02 18:29:22 +00:00
Dan Gohman
c27345f0b4
Tell ScalarEvolution that the loop is being deleted before actually
...
deleting it. This will let ScalarEvolution be more complete about
updating its records.
llvm-svn: 70632
2009-05-02 17:29:26 +00:00
Nick Lewycky
462cd34332
Don't append ".b" to the names of globals that are being shrunk to booleans.
...
llvm-svn: 70630
2009-05-02 16:21:50 +00:00
Dan Gohman
6409e7d4e9
Don't split critical edges during the AddUsersIfInteresting phase
...
of LSR. This makes the AddUsersIfInteresting phase of LSR a pure
analysis instead of a phase that potentially does CFG modifications.
The conditions where this code would actually perform a split are
rare, and in the cases where it actually would do a split the split
is usually undone by CodeGenPrepare, and in cases where splits
actually survive into codegen, they appear to hurt more often than
they help.
llvm-svn: 70625
2009-05-02 05:36:01 +00:00
Dan Gohman
65dbe7874f
Make RequiresTypeConversion canonicalize the types before calling the
...
target hooks canLosslesslyBitCastTo and isTruncateFree. This allows
targets to avoid worrying about handling all combinations of integer
and pointer types.
llvm-svn: 70555
2009-05-01 17:07:43 +00:00
Dan Gohman
d3aa4215ef
Minor whitespace fix.
...
llvm-svn: 70551
2009-05-01 16:56:32 +00:00
Dan Gohman
6be8530158
Fix some code to work if TargetLowering is not available.
...
llvm-svn: 70546
2009-05-01 16:29:14 +00:00
Dale Johannesen
f4031bd01e
Print correct instruction in dump.
...
llvm-svn: 70427
2009-04-29 22:57:20 +00:00
Dan Gohman
8ddd0b3599
Reword and tidy up some comments.
...
llvm-svn: 70416
2009-04-29 22:01:05 +00:00
Dan Gohman
3e6e188ee3
Remove an obsolete comment.
...
llvm-svn: 70262
2009-04-27 22:12:34 +00:00
Dale Johannesen
27b4f222cf
Fix PR 4086, a bug in FP IV elimination.
...
llvm-svn: 70247
2009-04-27 21:03:15 +00:00
Dan Gohman
e99f98262c
Permit ChangeCompareStride to rewrite a comparison when the factor
...
between the comparison's iv stride and the candidate stride is
exactly -1.
llvm-svn: 70244
2009-04-27 20:35:32 +00:00
Dan Gohman
1b5055ab7f
Return null instead of false, as appropriate.
...
llvm-svn: 70054
2009-04-25 17:28:45 +00:00
Dan Gohman
5638e0d642
Add several more icmp simplifications. Transform signed comparisons
...
into unsigned ones when the operands are known to have the same
sign bit value.
llvm-svn: 70053
2009-04-25 17:12:48 +00:00
Sanjiv Gupta
46c97e626f
Allow i16 type indices to gep.
...
llvm-svn: 69946
2009-04-24 02:37:54 +00:00
Dan Gohman
86bcd97014
Change SCEVExpander's expandCodeFor to provide more flexibility
...
with the persistent insertion point, and change IndVars to make
use of it. This fixes a bug where IndVars was holding on to a
stale insertion point and forcing the SCEVExpander to continue to
use it.
This fixes PR4038.
llvm-svn: 69892
2009-04-23 15:16:49 +00:00
Evan Cheng
d8174d3d09
Make sure both operands have binary instructions have the same type.
...
llvm-svn: 69844
2009-04-22 23:39:28 +00:00
Evan Cheng
59ca33053b
A few more places where the check of use_empty is needed.
...
llvm-svn: 69842
2009-04-22 23:09:16 +00:00
Evan Cheng
cbfe9df096
Avoid deferencing use_begin() if value does not have a use.
...
llvm-svn: 69836
2009-04-22 22:45:37 +00:00
Owen Anderson
6cbf5bb9bb
Real fix for PR3549, by using caching for predecessor counts in addition to the predecessors themselves. This halves the time
...
to optimize the testcase, beyond what my previous patch did.
llvm-svn: 69792
2009-04-22 08:50:12 +00:00
Owen Anderson
bb754826c9
Use PredIteratorCache in LCSSA, which gives a 37% overall speedup on the testcase from PR3549. More improvements to come.
...
llvm-svn: 69788
2009-04-22 08:09:13 +00:00
Chris Lattner
58be2d4413
use predicate instead of hand-rolled loop
...
llvm-svn: 69752
2009-04-21 23:37:18 +00:00
Chris Lattner
69223bb7f5
fix a crash on a pointless but valid zero-length memset, rdar://6808691
...
llvm-svn: 69680
2009-04-21 16:52:12 +00:00
Dan Gohman
4860db61be
Factor out a common base class from SCEVTruncateExpr, SCEVZeroExtendExpr,
...
and SCEVSignExtendExpr.
llvm-svn: 69649
2009-04-21 01:25:57 +00:00
Dan Gohman
b397e1a7a2
Introduce encapsulation for ScalarEvolution's TargetData object, and refactor
...
the code to minimize dependencies on TargetData.
llvm-svn: 69644
2009-04-21 01:07:12 +00:00
Dale Johannesen
1238220473
Adjust loop size estimate for full unrolling;
...
GEP's don't usually become instructions.
llvm-svn: 69631
2009-04-20 22:19:33 +00:00
Sanjiv Gupta
428d490332
Before trying to introduce/eliminate cast/ext/trunc to make indices type as
...
pointer type, make sure that the pointer size is a valid sequential index type.
llvm-svn: 69574
2009-04-20 06:05:54 +00:00
Dan Gohman
056857aa21
Use more const qualifiers with SCEV interfaces.
...
llvm-svn: 69450
2009-04-18 17:56:28 +00:00
Jim Grosbach
8d62763779
remove trailing whitespace
...
llvm-svn: 69402
2009-04-17 23:30:55 +00:00
David Greene
22fa407ed7
Use a safer iterator interface and get rid of std C++ library misuse.
...
This fixes a --enable-expensive-checks problem.
llvm-svn: 69353
2009-04-17 14:56:18 +00:00
Dan Gohman
d2d6fd806c
Don't create ConstantInts with pointer type. This fixes a
...
regression in 403.gcc in PIC_CODEGEN=1 and DISABLE_LTO=1
mode.
llvm-svn: 69344
2009-04-17 02:02:52 +00:00
Dan Gohman
fec1d086e0
Use TargetData::getTypeSizeInBits instead of getPrimitiveSizeInBits()
...
to get the correct answer for pointer types.
llvm-svn: 69321
2009-04-16 22:35:57 +00:00
Eli Friedman
929207fd1d
Fix for PR3944: make mem2reg O(N) instead of O(N^2) in the number of
...
incoming edges for a block with many predecessors.
llvm-svn: 69312
2009-04-16 21:40:28 +00:00
Dan Gohman
8b6ebb1112
Minor code simplifications. Don't attempt LSR on theoretical
...
targets with pointers larger than 64 bits, due to the code not
yet being APInt clean.
llvm-svn: 69296
2009-04-16 16:49:48 +00:00
Dan Gohman
e2ead2c328
LSR is no longer a GEP optimizer. It is now an IV expression
...
optimizer, which just happen to frequently involve optimizing GEPs.
llvm-svn: 69295
2009-04-16 16:46:01 +00:00
Dan Gohman
a8be04b2db
Use ConstantExpr::getIntToPtr instead of SCEVExpander::InsertCastOfTo,
...
since the operand is always a constant.
llvm-svn: 69291
2009-04-16 15:48:38 +00:00
Dan Gohman
71bccd3e0e
Use a SCEV expression cast instead of immediately inserting a
...
new instruction with SCEVExpander::InsertCastOfTo.
llvm-svn: 69290
2009-04-16 15:47:35 +00:00
Dan Gohman
0a40ad93a9
Expand GEPs in ScalarEvolution expressions. SCEV expressions can now
...
have pointer types, though in contrast to C pointer types, SCEV
addition is never implicitly scaled. This not only eliminates the
need for special code like IndVars' EliminatePointerRecurrence
and LSR's own GEP expansion code, it also does a better job because
it lets the normal optimizations handle pointer expressions just
like integer expressions.
Also, since LLVM IR GEPs can't directly index into multi-dimensional
VLAs, moving the GEP analysis out of client code and into the SCEV
framework makes it easier for clients to handle multi-dimensional
VLAs the same way as other arrays.
Some existing regression tests show improved optimization.
test/CodeGen/ARM/2007-03-13-InstrSched.ll in particular improved to
the point where if-conversion started kicking in; I turned it off
for this test to preserve the intent of the test.
llvm-svn: 69258
2009-04-16 03:18:22 +00:00
Dale Johannesen
a71daa83c6
Eliminate zext over (iv | const) or (signed iv),
...
and sext over (iv | const), if a longer iv is
available. Allow expressions to have more than
one zext/sext parent. All from OpenSSL.
llvm-svn: 69241
2009-04-15 23:31:51 +00:00
Dale Johannesen
82230b5b17
Eliminate zext over (iv & const) or ((iv+const)&const)
...
if a longer iv is available. These subscript forms are
not common; they're a bottleneck in OpenSSL.
llvm-svn: 69215
2009-04-15 20:41:02 +00:00
Dale Johannesen
7ffb7d5728
Enhance induction variable code to remove the
...
sext around sext(shorter IV + constant), using a
longer IV instead, when it can figure out the
add can't overflow. This comes up a lot in
subscripting; mainly affects 64 bit.
llvm-svn: 69123
2009-04-15 01:10:12 +00:00
Evan Cheng
ffb83a155e
Avoid making the transformation enabled by my last patch if the new destinations have phi nodes.
...
llvm-svn: 69121
2009-04-15 00:43:54 +00:00
Devang Patel
046bf624b9
While inlining, clone llvm.dbg.func.start intrinsic and adjust
...
llvm.dbg.region.end instrinsic. This nested llvm.dbg.func.start/llvm.dbg.region.end pair now enables DW_TAG_inlined_subroutine support in code generator.
llvm-svn: 69118
2009-04-15 00:17:06 +00:00
Evan Cheng
5ebf2acd84
Optimize conditional branch on i1 phis with non-constant inputs.
...
This turns:
eq:
%3 = icmp eq i32 %1, %2
br label %join
ne:
%4 = icmp ne i32 %1, %2
br label %join
join:
%5 = phi i1 [%3, %eq], [%4, %ne]
br i1 %5, label %yes, label %no
=>
eq:
%3 = icmp eq i32 %1, %2
br i1 %3, label %yes, label %no
ne:
%4 = icmp ne i32 %1, %2
br i1 %4, label %yes, label %no
llvm-svn: 69102
2009-04-14 23:40:03 +00:00
Owen Anderson
a1902318e3
LoopIndexSplit needs to inform the loop pass manager of the instructions it is
...
deleting, not just the basic block.
llvm-svn: 69011
2009-04-14 01:04:19 +00:00
Chris Lattner
836e77d161
eliminate unneeded parens.
...
llvm-svn: 68939
2009-04-13 05:38:23 +00:00
Chris Lattner
6cd82fb430
"There was a typo in my previous patch which leads to miscompilation of
...
strncat :(
strncat(foo, "bar", 99)
would be optimized to
memcpy(foo+strlen(foo), "bar", 100, 1)
instead of
memcpy(foo+strlen(foo), "bar", 4, 1)"
Patch by Benjamin Kramer!
llvm-svn: 68905
2009-04-12 18:22:33 +00:00
Chris Lattner
91b6af24ac
add some optimizations for strncpy/strncat and factor some
...
code. Patch by Benjamin Kramer!
llvm-svn: 68885
2009-04-12 05:06:39 +00:00
Chris Lattner
eb510d6b3d
Instcombine should not promote whole computation trees to "strange"
...
integer types, unless they are already strange. This prevents it from
turning the code produced by SROA into crazy libcalls and stuff that
the code generator can't handle. In the attached example, the result
was an i96 multiply that caused the x86 backend to assert.
Note that if TargetData had an idea of what the legal types are for
a target that this could be used to stop instcombine from introducing
i64 muls, as Scott wanted.
llvm-svn: 68598
2009-04-08 05:41:03 +00:00
Chris Lattner
321741af5f
fix rdar://6762290, a crash compiling cxx filt with clang.
...
llvm-svn: 68500
2009-04-07 05:03:34 +00:00
Chris Lattner
47d6e7b93e
remove empty section
...
llvm-svn: 68485
2009-04-07 02:55:53 +00:00
Ed Schouten
01aa6ec97a
Let the strcat optimizer return the pointer to the start of the buffer,
...
instead of the place where it started to perform the string copy.
- PR3661
- Patch by Benjamin Kramer!
llvm-svn: 68443
2009-04-06 13:06:48 +00:00
Owen Anderson
98f912bf13
Reapply r68211, with the miscompilations it caused fixed.
...
llvm-svn: 68262
2009-04-01 23:53:49 +00:00
Dan Gohman
c4971721ea
Revert r68172. It caused regressions in
...
Applications/Burg/burg
Applications/ClamAV/clamscan
and many other tests.
llvm-svn: 68211
2009-04-01 16:37:47 +00:00
Owen Anderson
ff5961b46c
Enhance GVN to propagate simple conditionals. This fixes PR3921.
...
llvm-svn: 68172
2009-04-01 01:20:45 +00:00
Chris Lattner
f72ce6ea8b
Make the key of ValueRankMap an AssertingVH, so that we die violently
...
if it dangles.
llvm-svn: 68150
2009-03-31 22:13:29 +00:00
Evan Cheng
826b6f0f7c
Throttle back "fold select into operand" transformation. InstCombine should not generate selects of two constants unless they are selects of 0 and 1.
...
e.g.
define i32 @t1(i32 %c, i32 %x) nounwind {
%t1 = icmp eq i32 %c, 0
%t2 = lshr i32 %x, 18
%t3 = select i1 %t1, i32 %t2, i32 %x
ret i32 %t3
}
was turned into
define i32 @t2(i32 %c, i32 %x) nounwind {
%t1 = icmp eq i32 %c, 0
%t2 = select i1 %t1, i32 18, i32 0
%t3 = lshr i32 %x, %t2
ret i32 %t3
}
For most targets, that means materializing two constants and then a select. e.g. On x86-64
movl %esi, %eax
shrl $18, %eax
testl %edi, %edi
cmovne %esi, %eax
ret
=>
xorl %eax, %eax
testl %edi, %edi
movl $18, %ecx
cmovne %eax, %ecx
movl %esi, %eax
shrl %cl, %eax
ret
Also, the optimizer and codegen can reason about shl / and / add, etc. by a constant. This optimization will hinder optimizations using ComputeMaskedBits.
llvm-svn: 68142
2009-03-31 20:42:45 +00:00
Devang Patel
4ce6e69022
Update call graph after inlining invoke.
...
Patch by Jay Foad.
llvm-svn: 68120
2009-03-31 17:36:12 +00:00
Devang Patel
6e68bd007a
Loop Index Split can eliminate a loop if it can determin if loop body is executed only once. There was a bug in determining IV based value of the iteration for which the loop body is executed. Fix it.
...
llvm-svn: 68071
2009-03-30 22:24:10 +00:00
Duncan Sands
3241b74f69
Revert r67798: it breaks llvm-gcc bootstrap on x86-64-linux, presumably due to
...
a miscompilation.
make[4]: Entering directory `gcc-4.2.llvm-objects/x86_64-unknown-linux-gnu/libstdc++-v3/include'
if [ ! -d "./x86_64-unknown-linux-gnu/bits/stdtr1c++.h.gch" ]; then \
mkdir -p ./x86_64-unknown-linux-gnu/bits/stdtr1c++.h.gch; \
fi; \
gcc-4.2.llvm-objects/./gcc/xgcc -shared-libgcc -Bgcc-4.2.llvm-objects/./gcc -nostdinc++
-Lgcc-4.2.llvm-objects/x86_64-unknown-linux-gnu/libstdc++-v3/src -Lgcc-4.2.llvm-objects/x86_64-unknown-linux-gnu/libstdc++-v3/src/.libs
-B/usr/local/gnat-llvm/x86_64-unknown-linux-gnu/bin/ -B/usr/local/gnat-llvm/x86_64-unknown-linux-gnu/lib/ -isystem
/usr/local/gnat-llvm/x86_64-unknown-linux-gnu/include -isystem /usr/local/gnat-llvm/x86_64-unknown-linux-gnu/sys-include -Winvalid-pch -Wno-deprecated -x
c++-header -g -O2 -D_GNU_SOURCE -Igcc-4.2.llvm-objects/x86_64-unknown-linux-gnu/libstdc++-v3/include/x86_64-unknown-linux-gnu
-Igcc-4.2.llvm-objects/x86_64-unknown-linux-gnu/libstdc++-v3/include -Igcc-4.2.llvm/libstdc++-v3/libsupc++ -O2 -g
gcc-4.2.llvm/libstdc++-v3/include/precompiled/stdtr1c++.h -o x86_64-unknown-linux-gnu/bits/stdtr1c++.h.gch/O2g.gch
In file included from gcc-4.2.llvm-objects/x86_64-unknown-linux-gnu/libstdc++-v3/include/tr1/repeat.h:247,
from gcc-4.2.llvm-objects/x86_64-unknown-linux-gnu/libstdc++-v3/include/tr1/functional:1098,
from gcc-4.2.llvm/libstdc++-v3/include/precompiled/stdtr1c++.h:53:
gcc-4.2.llvm-objects/x86_64-unknown-linux-gnu/libstdc++-v3/include/tr1/functional_iterate.h:417: internal compiler error: in ggc_recalculate_in_use_p, at
ggc-page.c:1602
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://llvm.org/bugs/ > for instructions.
make[4]: *** [x86_64-unknown-linux-gnu/bits/stdtr1c++.h.gch/O2g.gch] Error 1
llvm-svn: 67839
2009-03-27 14:56:47 +00:00
Dale Johannesen
4026b041ce
One more place to skip debug info.
...
llvm-svn: 67811
2009-03-27 01:13:37 +00:00
Devang Patel
fe7c0492a0
While hoisting an instruction, update alias info set tracker.
...
llvm-svn: 67798
2009-03-26 23:48:52 +00:00
Dale Johannesen
db90560c1c
Skip debug info one more place. (This one gets
...
called from llc, not opt, but it's an IR level
optimization nevertheless.)
llvm-svn: 67724
2009-03-26 01:15:07 +00:00
Devang Patel
4555618854
Before deleting a basic block, give other loop passes a chance cleanup analysis values, related to the instructions in the basic block.
...
llvm-svn: 67719
2009-03-25 23:57:48 +00:00
Chris Lattner
c3b2111d97
Fix PR3874 by restoring a condition I removed, but making it more
...
precise than it used to be.
llvm-svn: 67662
2009-03-25 00:28:58 +00:00
Chris Lattner
9e94538005
oops, I intended to remove this, not comment it out. Thanks Duncan!
...
llvm-svn: 67657
2009-03-24 23:48:25 +00:00
Chris Lattner
306813cbbb
canonicalize inttoptr and ptrtoint instructions which cast pointers
...
to/from integer types that are not intptr_t to convert to intptr_t
then do an integer conversion to the dest type. This exposes the
cast to the optimizer.
llvm-svn: 67638
2009-03-24 18:35:40 +00:00
Chris Lattner
d9eb41177a
two changes:
...
1. Make instcombine always canonicalize trunc x to i1 into an icmp(x&1). This
exposes the AND to other instcombine xforms and is more of what the code
generator expects.
2. Rewrite the remaining trunc pattern match to use 'match', which
simplifies it a lot.
llvm-svn: 67635
2009-03-24 18:15:30 +00:00
Dale Johannesen
32dfb35281
Use a SmallPtrSet instead of std::set.
...
llvm-svn: 67578
2009-03-23 23:39:20 +00:00
Dan Gohman
4f2fea1a21
Now that errs() is properly non-buffered, there's no need to
...
explicitly flush it.
llvm-svn: 67526
2009-03-23 15:57:19 +00:00
Duncan Sands
1f15ca7c7a
Factorize out a concept - no functionality change.
...
llvm-svn: 67454
2009-03-21 21:27:31 +00:00
Chris Lattner
0a981d1d36
Fix instcombine to not introduce undefined shifts when merging two
...
shifts together. This fixes PR3851.
llvm-svn: 67411
2009-03-20 22:41:15 +00:00
Duncan Sands
a09e0afe74
Don't load values out of global constants with weak
...
linkage: the value may be replaced with something
different at link time. (Frontends that want to
allow values to be loaded out of weak constants can
give their constants weak_odr linkage).
llvm-svn: 67407
2009-03-20 21:53:29 +00:00
Dale Johannesen
2050968df9
Clear the cached cost when removing a function in
...
the inliner; prevents nondeterministic behavior
when the same address is reallocated.
Don't build call graph nodes for debug intrinsic calls;
they're useless, and there were typically a lot of them.
llvm-svn: 67311
2009-03-19 18:03:56 +00:00
Dale Johannesen
e4f361212b
Fix comment typo.
...
llvm-svn: 67307
2009-03-19 17:23:29 +00:00
Dale Johannesen
52bc2aac8a
This pass keeps a map of Instructions to Rank numbers,
...
and was deleting Instructions without clearing the
corresponding map entry. This led to nondeterministic
behavior if the same address got allocated to another
Instruction within a short time.
llvm-svn: 67306
2009-03-19 17:22:53 +00:00
Nick Lewycky
bfd4ad67c7
Remove strange extra semicolons.
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llvm-svn: 67287
2009-03-19 05:51:39 +00:00
Chris Lattner
514fc5b143
aha, DAE does have to think about PHI nodes. Many thanks to "Dr Evil" (aka Duncan)
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for pointing this out :)
llvm-svn: 67212
2009-03-18 16:48:45 +00:00
Chris Lattner
595923ff75
Fix PR3826 - InstComb assert with vector shift, by not calling ComputeNumSignBits on a vector.
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llvm-svn: 67211
2009-03-18 16:32:19 +00:00
Chris Lattner
ab8022055a
add an assertion to make it clear that PHI nodes are not allowed.
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llvm-svn: 67210
2009-03-18 16:23:56 +00:00
Zhou Sheng
4e2af3cb55
Explicitly check for StoreInst, do not lose the chance to delete
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unused loads or bitcasts.
llvm-svn: 67202
2009-03-18 12:48:48 +00:00
Zhou Sheng
05bea906c1
Revert my previous change on Local.cpp, instead, fix the bug on scalarrepl.
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If the instruction has no users, it is also not only used by debug info
and should not be deleted.
llvm-svn: 67194
2009-03-18 10:13:08 +00:00
Zhou Sheng
64a6a092b1
Fix a bug.
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If I->use_empty(), this method should return false.
llvm-svn: 67180
2009-03-18 07:56:13 +00:00
Chris Lattner
a15ce21135
Fix PR3807 by inserting 'insertelement' instructions in the normal dest of
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an invoke instead of after the invoke (in its block), which is invalid.
llvm-svn: 67139
2009-03-18 00:31:45 +00:00
Chris Lattner
42e9ca42ce
LSR shouldn't ever try to hack on integer IV's larger than 64-bits. Right now
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it is not APInt clean, but even when it is it needs to be evaluated carefully
to determine whether it is actually profitable.
This fixes a crash on PR3806
llvm-svn: 67134
2009-03-17 23:58:30 +00:00
Chris Lattner
e549493a55
Remove a condition which is always true.
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llvm-svn: 67089
2009-03-17 17:55:15 +00:00
Dale Johannesen
87077356be
Fix a debug info dependency in jump threading.
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llvm-svn: 67064
2009-03-17 00:38:24 +00:00
Dale Johannesen
a4ac735531
Fix -strip-debug-declare to work when there are
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llvm.global.variable's but no llvm.declare's.
llvm-svn: 66977
2009-03-13 22:59:47 +00:00
Evan Cheng
94419d6fdd
Fix PR3784: If the source of a phi comes from a bb ended with an invoke, make sure the copy is inserted before the try range (unless it's used as an input to the invoke, then insert it after the last use), not at the end of the bb.
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Also re-apply r66140 which was disabled as a workaround.
llvm-svn: 66976
2009-03-13 22:59:14 +00:00
Bill Wendling
4bb96e9a50
Revert r66920. It was causing failures in the self-hosting buildbot (in release
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mode).
Running /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/test/BugPoint/dg.exp ...
FAIL: /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/test/BugPoint/crash-narrowfunctiontest.ll
Failed with signal(SIGBUS) at line 1
while running: bugpoint /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/test/BugPoint/crash-narrowfunctiontest.ll -bugpoint-crashcalls -silence-passes > /dev/null
0 bugpoint 0x0035dd25 llvm::sys::SetInterruptFunction(void (*)()) + 85
1 bugpoint 0x0035e382 llvm::sys::RemoveFileOnSignal(llvm::sys::Path const&, std::string*) + 706
2 libSystem.B.dylib 0x92f112bb _sigtramp + 43
3 libSystem.B.dylib 0xffffffff _sigtramp + 1829694831
4 bugpoint 0x00021d1c main + 92
5 bugpoint 0x00002106 start + 54
6 bugpoint 0x00000004 start + 18446744073709543220
Stack dump:
0. Program arguments: bugpoint /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/test/BugPoint/crash-narrowfunctiontest.ll -bugpoint-crashcalls -silence-passes
FAIL: /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/test/BugPoint/misopt-basictest.ll
Failed with signal(SIGBUS) at line 1
while running: bugpoint /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/test/BugPoint/misopt-basictest.ll -dce -bugpoint-deletecalls -simplifycfg -silence-passes
0 bugpoint 0x0035dd25 llvm::sys::SetInterruptFunction(void (*)()) + 85
1 bugpoint 0x0035e382 llvm::sys::RemoveFileOnSignal(llvm::sys::Path const&, std::string*) + 706
2 libSystem.B.dylib 0x92f112bb _sigtramp + 43
3 libSystem.B.dylib 0xffffffff _sigtramp + 1829694831
4 bugpoint 0x00021d1c main + 92
5 bugpoint 0x00002106 start + 54
6 bugpoint 0x00000006 start + 18446744073709543222
Stack dump:
0. Program arguments: bugpoint /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/test/BugPoint/misopt-basictest.ll -dce -bugpoint-deletecalls -simplifycfg -silence-passes
FAIL: /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/test/BugPoint/remove_arguments_test.ll
Failed with signal(SIGBUS) at line 1
while running: bugpoint /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/test/BugPoint/remove_arguments_test.ll -bugpoint-crashcalls -silence-passes
0 bugpoint 0x0035dd25 llvm::sys::SetInterruptFunction(void (*)()) + 85
1 bugpoint 0x0035e382 llvm::sys::RemoveFileOnSignal(llvm::sys::Path const&, std::string*) + 706
2 libSystem.B.dylib 0x92f112bb _sigtramp + 43
3 libSystem.B.dylib 0xffffffff _sigtramp + 1829694831
4 bugpoint 0x00021d1c main + 92
5 bugpoint 0x00002106 start + 54
Stack dump:
0. Program arguments: bugpoint /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/test/BugPoint/remove_arguments_test.ll -bugpoint-crashcalls -silence-passes
--- Reverse-merging (from foreign repository) r66920 into '.':
U include/llvm/Support/CallSite.h
U include/llvm/Instructions.h
U lib/Analysis/IPA/GlobalsModRef.cpp
U lib/Analysis/IPA/Andersens.cpp
U lib/Bitcode/Writer/BitcodeWriter.cpp
U lib/VMCore/Instructions.cpp
U lib/VMCore/Verifier.cpp
U lib/VMCore/AsmWriter.cpp
U lib/Transforms/Utils/LowerInvoke.cpp
U lib/Transforms/Scalar/SimplifyCFGPass.cpp
U lib/Transforms/IPO/PruneEH.cpp
U lib/Transforms/IPO/DeadArgumentElimination.cpp
llvm-svn: 66953
2009-03-13 21:15:59 +00:00
Dale Johannesen
c65830519e
One more place where debug info affects codegen.
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llvm-svn: 66930
2009-03-13 19:23:20 +00:00