Owen Anderson
c2146a6abc
Branch instructions don't produce values, so there's no need to generate a value number for them. This
...
avoids adding them to the various value numbering tables, resulting in a minor (~3%) speedup for GVN
on 40.gcc.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122819 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-04 18:54:18 +00:00
Owen Anderson
2802c7536f
Remove commented out code.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122817 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-04 18:22:08 +00:00
Cameron Zwarich
64573aecb6
Switch to the new style of asterisk placement.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122815 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-04 18:19:19 +00:00
Chris Lattner
43b40a4620
fix an off-by-one bug that caused a crash analyzing
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ashr's with huge shift amounts, PR8896
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122814 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-04 18:19:15 +00:00
Cameron Zwarich
26db45818a
Switch to path halving from path compression for a small speedup. This also
...
makes getLeader() nonrecursive.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122811 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-04 16:24:51 +00:00
Duncan Sands
c449a224bb
These methods should be "const"; make them so.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122809 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-04 12:52:29 +00:00
Chris Lattner
e41d3c015c
Teach loop-idiom to turn a loop containing a memset into a larger memset
...
when safe.
The testcase is basically this nested loop:
void foo(char *X) {
for (int i = 0; i != 100; ++i)
for (int j = 0; j != 100; ++j)
X[j+i*100] = 0;
}
which gets turned into a single memset now. clang -O3 doesn't optimize
this yet though due to a phase ordering issue I haven't analyzed yet.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122806 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-04 07:46:33 +00:00
Chris Lattner
b7e9ef0ed1
restructure this a bit. Initialize the WeakVH with "I", the
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instruction *after* the store. The store will always be deleted
if the transformation kicks in, so we'd do an N^2 scan of every
loop block. Whoops.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122805 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-04 07:27:30 +00:00
Cameron Zwarich
645b1d2f12
Eliminate repeated allocation of a per-BB DenseMap for a 4.6% reduction of time
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spent in StrongPHIElimination on 403.gcc.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122803 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-04 06:42:27 +00:00
Cameron Zwarich
95bb00414e
Avoid finding loop back edges when we are not splitting critical edges in
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CodeGenPrepare (which is the default behavior).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122801 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-04 04:43:31 +00:00
Owen Anderson
fa3306af82
Clean up a funky pass registration that got passed over when I got rid of static constructors.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122795 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-04 00:55:21 +00:00
Andrew Trick
6018deefe8
Fix the ARM IIC_iCMPsi itinerary and add an important assert.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122794 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-04 00:32:57 +00:00
Cameron Zwarich
a1cb585384
Address most of Duncan's review comments. Also, make LoopInstSimplify a simple
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FunctionPass. It probably doesn't have a reason to be a LoopPass, as it will
probably drop the simple fixed point and either use RPO iteration or Duncan's
approach in instsimplify of only revisiting instructions that have changed.
The next step is to preserve LoopSimplify. This looks like it won't be too hard,
although the pass manager doesn't actually seem to respect when non-loop passes
claim to preserve LCSSA or LoopSimplify. This will have to be fixed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122791 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-04 00:12:46 +00:00
Chris Lattner
7c90b90f4e
use the very-handy getTruncateOrZeroExtend helper function, and
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stop setting NSW: signed overflow is possible. Thanks to Dan
for pointing these out.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122790 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-04 00:06:55 +00:00
Bill Wendling
2c502f915f
Formatting changes. No functionality change.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122789 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-03 23:59:05 +00:00
Owen Anderson
6f96b275b6
Fix comment.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122788 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-03 23:51:56 +00:00
Owen Anderson
392249fcf3
Use the new addEscapingValue callback to update GlobalsModRef when GVN adds PHIs of GEPs. For the moment,
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have GlobalsModRef handle this conservatively by simply removing the value from its maps.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122787 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-03 23:51:43 +00:00
Chris Lattner
e508dd4c75
Duncan deftly points out that readnone functions aren't
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invalidated by stores, so they can be handled as 'simple'
operations.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122785 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-03 23:38:13 +00:00
Evan Cheng
7158e08b8e
Use pushq / popq instead of subq $8, %rsp / addq $8, %rsp to adjust stack in
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prologue and epilogue if the adjustment is 8. Similarly, use pushl / popl if
the adjustment is 4 in 32-bit mode.
In the epilogue, takes care to pop to a caller-saved register that's not live
at the exit (either return or tailcall instruction).
rdar://8771137
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122783 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-03 22:53:22 +00:00
Wesley Peck
b020808f0d
Fix more stack layout issues in the MBlaze backend.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122778 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-03 21:40:26 +00:00
Owen Anderson
ab6acc6ecd
Stub out a new updating interface to AliasAnalysis, allowing stateful analyses to be informed when
...
a pointer value has potentially become escaping. Implementations can choose to either fall back to
conservative responses for that value, or may recompute their analysis to accomodate the change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122777 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-03 21:38:41 +00:00
Chris Lattner
895ace08e0
fix rdar://8813415 - a miscompilation of 164.gzip that loop-idiom
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exposed. It turns out to be a latent bug in basicaa, scary.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122772 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-03 21:03:33 +00:00
Owen Anderson
30f4a559d7
Simplify GVN's value expression structure, allowing the elimination of a lot of
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almost-but-not-quite-identical code. No intended functionality change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122760 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-03 19:00:11 +00:00
Chris Lattner
10b883b13f
stength reduce my previous patch a bit. The only instructions
...
that are allowed to have metadata operands are intrinsic calls,
and the only ones that take metadata currently return void.
Just reject all void instructions, which should not be value
numbered anyway. To future proof things, add an assert to the
getHashValue impl for calls to check that metadata operands
aren't present.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122759 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-03 18:43:03 +00:00
Chris Lattner
a12ba39a1d
fix PR8895: metadata operands don't have a strong use of their
...
nested values, so they can change and drop to null, which can
change the hash and cause havok.
It turns out that it isn't a good idea to value number stuff
with metadata operands anyway, so... don't.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122758 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-03 18:28:15 +00:00
Duncan Sands
dc615e41b5
Speed up instsimplify by about 10-15% by not bothering to retry
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InstructionSimplify on instructions that didn't change since the
last time round the loop.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122745 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-03 10:50:04 +00:00
Cameron Zwarich
7cb4fa20b5
Switch a worklist in CodeGenPrepare to SmallVector and increase the inline
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capacity on the Visited SmallPtrSet. On 403.gcc, this is about a 4.5% speedup of
CodeGenPrepare time (which itself is 10% of time spent in the backend).
This is progress towards PR8889.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122741 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-03 06:33:01 +00:00
Chris Lattner
75637154c3
earlycse can do trivial with-a-block dead store
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elimination as well. This deletes 60 stores in 176.gcc
that largely come from bitfield code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122736 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-03 04:17:24 +00:00
Cameron Zwarich
53eeba586d
Use a RecyclingAllocator to allocate values for MachineCSE's ScopedHashTable for
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a 28% speedup of MachineCSE time on 403.gcc.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122735 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-03 04:07:46 +00:00
Chris Lattner
71230acbbe
switch the load table to use a recycling bump pointer allocator,
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speeding earlycse up by 6%.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122733 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-03 03:53:50 +00:00
Chris Lattner
ef87fc2e0a
now that loads are in their own table, we can implement
...
store->load forwarding. This allows EarlyCSE to zap 600 more
loads from 176.gcc.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122732 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-03 03:46:34 +00:00
Chris Lattner
85db61066a
split loads and calls into separate tables. Loads are now just indexed
...
by their pointer instead of using MemoryValue to wrap it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122731 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-03 03:41:27 +00:00
Chris Lattner
a60a8b0eb7
various cleanups, no functionality change.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122729 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-03 03:28:23 +00:00
Nick Lewycky
9ad1cb59de
Add spliceFunction to the CallGraph interface. This allows users to efficiently
...
update a callGraph when performing the common operation of splicing the body to
a new function and updating all callers (such as via RAUW).
No users yet, though this is intended for DeadArgumentElimination as part of
PR8887.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122728 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-03 03:19:35 +00:00
Chris Lattner
8e7f0d70c7
Teach EarlyCSE to do trivial CSE of loads and read-only calls.
...
On 176.gcc, this catches 13090 loads and calls, and increases the
number of simple instructions CSE'd from 29658 to 36208.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122727 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-03 03:18:43 +00:00
Chris Lattner
f19745947d
rename InstValue to SimpleValue, add some comments.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122725 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-03 02:20:48 +00:00
Michael J. Spencer
f0da7299fa
CMake: Add missing source file.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122724 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-03 02:13:05 +00:00
Chris Lattner
82dcd5edd2
Allocate nodes for the scoped hash table from a recyling bump pointer
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allocator. This speeds up early cse by about 20%
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122723 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-03 01:42:46 +00:00
Chris Lattner
d957c71791
reduce redundancy in the hashing code and other misc cleanups.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122720 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-03 01:10:08 +00:00
Cameron Zwarich
832f61117d
Add a new loop-instsimplify pass, with the intention of replacing the instance
...
of instcombine that is currently in the middle of the loop pass pipeline. This
commit only checks in the pass; it will hopefully be enabled by default later.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122719 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-03 00:25:16 +00:00
Chris Lattner
67678c8307
fix some pastos
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122718 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-02 23:29:58 +00:00
Chris Lattner
91139ccd99
add DEBUG and -stats output to earlycse.
...
Teach it to CSE the rest of the non-side-effecting instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122716 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-02 23:19:45 +00:00
Chris Lattner
cc9eab26b3
Enhance earlycse to do CSE of casts, instsimplify and die.
...
Add a testcase.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122715 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-02 23:04:14 +00:00
Chris Lattner
9fc5cdf77c
split dom frontier handling stuff out to its own DominanceFrontier header,
...
so that Dominators.h is *just* domtree. Also prune #includes a bit.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122714 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-02 22:09:33 +00:00
Chris Lattner
12be936cc9
sketch out a new early cse pass. No functionality yet.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122713 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-02 21:47:05 +00:00
Chris Lattner
63f9c3c49a
fix a miscompilation of tramp3d-v4: when forming a memcpy, we have to make
...
sure that the loop we're promoting into a memcpy doesn't mutate the input
of the memcpy. Before we were just checking that the dest of the memcpy
wasn't mod/ref'd by the loop.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122712 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-02 21:14:18 +00:00
Chris Lattner
8e08e73f0e
If a loop iterates exactly once (has backedge count = 0) then don't
...
mess with it. We'd rather peel/unroll it than convert all of its
stores into memsets.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122711 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-02 20:24:21 +00:00
Benjamin Kramer
80220369b0
Try to reuse the value when lowering memset.
...
This allows us to compile:
void test(char *s, int a) {
__builtin_memset(s, a, 15);
}
into 1 mul + 3 stores instead of 3 muls + 3 stores.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122710 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-02 19:57:05 +00:00
Benjamin Kramer
8c06aa1c59
Lower the i8 extension in memset to a multiply instead of a potentially long series of shifts and ors.
...
We could implement a DAGCombine to turn x * 0x0101 back into logic operations
on targets that doesn't support the multiply or it is slow (p4) if someone cares
enough.
Example code:
void test(char *s, int a) {
__builtin_memset(s, a, 4);
}
before:
_test: ## @test
movzbl 8(%esp), %eax
movl %eax, %ecx
shll $8, %ecx
orl %eax, %ecx
movl %ecx, %eax
shll $16, %eax
orl %ecx, %eax
movl 4(%esp), %ecx
movl %eax, 4(%ecx)
movl %eax, (%ecx)
ret
after:
_test: ## @test
movzbl 8(%esp), %eax
imull $16843009, %eax, %eax ## imm = 0x1010101
movl 4(%esp), %ecx
movl %eax, 4(%ecx)
movl %eax, (%ecx)
ret
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122707 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-02 19:44:58 +00:00
Oscar Fuentes
3458534f11
A workaround for a bug in cmake 2.8.3 diagnosed on PR 8885.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122706 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-02 19:32:31 +00:00
Nick Lewycky
d081b04f99
Also remove functions that use complex constant expressions in terms of
...
another function.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122705 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-02 19:16:44 +00:00
Chris Lattner
62c50fdf69
enhance loop idiom recognition to scan *all* unconditionally executed
...
blocks in a loop, instead of just the header block. This makes it more
aggressive, able to handle Duncan's Ada examples.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122704 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-02 19:01:03 +00:00
Chris Lattner
81a866d615
make inSubLoop much more efficient.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122703 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-02 18:53:08 +00:00
Chris Lattner
83fc584ea8
rip out isExitBlockDominatedByBlockInLoop, calling DomTree::dominates instead.
...
isExitBlockDominatedByBlockInLoop is a relic of the days when domtree was
*just* a tree and didn't have DFS numbers. Checking DFS numbers is faster
and easier than "limiting the search of the tree".
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122702 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-02 18:45:39 +00:00
Chris Lattner
bdce5720ad
add a list of opportunities for future improvement.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122701 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-02 18:32:09 +00:00
Chris Lattner
527b47d189
update a bunch of entries.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122700 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-02 18:31:38 +00:00
Duncan Sands
67fb341f8b
Fix PR8702 by not having LoopSimplify claim to preserve LCSSA form. As described
...
in the PR, the pass could break LCSSA form when inserting preheaders. It probably
would be easy enough to fix this, but since currently we always go into LCSSA form
after running this pass, doing so is not urgent.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122695 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-02 13:38:21 +00:00
Chris Lattner
cf078f2b20
Allow loop-idiom to run on multiple BB loops, but still only scan the loop
...
header for now for memset/memcpy opportunities. It turns out that loop-rotate
is successfully rotating loops, but *DOESN'T MERGE THE BLOCKS*, turning "for
loops" into 2 basic block loops that loop-idiom was ignoring.
With this fix, we form many *many* more memcpy and memsets than before, including
on the "history" loops in the viterbi benchmark, which look like this:
for (j=0; j<MAX_history; ++j) {
history_new[i][j+1] = history[2*i][j];
}
Transforming these loops into memcpy's speeds up the viterbi benchmark from
11.98s to 3.55s on my machine. Woo.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122685 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-02 07:58:36 +00:00
Chris Lattner
6b04160dd8
remove debugging code.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122683 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-02 07:37:13 +00:00
Chris Lattner
4ce31fb574
add some -stats output.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122682 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-02 07:36:44 +00:00
Chris Lattner
d9e079706e
improve loop rotation to use CodeMetrics to analyze the
...
size of a loop header instead of its own code size estimator.
This allows it to handle bitcasts etc more precisely.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122681 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-02 07:35:53 +00:00
Chris Lattner
e2c4392091
teach loop idiom recognition to form memcpy's from simple loops.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122678 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-02 03:37:56 +00:00
Nick Lewycky
abd6c75409
Remove functions from the FnSet when one of their callee's is being merged. This
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maintains the guarantee that the DenseSet expects two elements it contains to
not go from inequal to equal under its nose.
As a side-effect, this also lets us switch from iterating to a fixed-point to
actually maintaining a work queue of functions to look at again, and we don't
add thunks to our work queue so we don't need to detect and ignore them.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122677 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-02 02:46:33 +00:00
Chris Lattner
15df04472a
a missed __builtin_object_size case.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122676 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-01 22:57:31 +00:00
Chris Lattner
9c8fb9e820
various updates.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122675 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-01 22:52:11 +00:00
Chris Lattner
d91ed10b70
fix a globalopt crash on two Adobe-C++ testcases that the recent
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loop idiom pass exposed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122674 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-01 22:31:46 +00:00
Rafael Espindola
03277e7fb4
Add support for the 'H' modifier.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122667 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-01 20:58:46 +00:00
Anton Korobeynikov
4d72860835
Model operand restrictions of mul-like instructions on ARMv5 via
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earlyclobber stuff. This should fix PRs 2313 and 8157.
Unfortunately, no testcase, since it'd be dependent on register
assignments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122663 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-01 20:38:38 +00:00
Chris Lattner
bafa117e8f
add a validity check that was missed, fixing a crash on the
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new testcase.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122662 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-01 20:12:04 +00:00
Duncan Sands
124708d9b4
Revert commit 122654 at the request of Chris, who reckons that instsimplify
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is the wrong hammer for this nail, and is probably right.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122661 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-01 20:08:02 +00:00
Chris Lattner
a64cbf067d
improve validity check to handle constant-trip-count loops more
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aggressively. In practice, this doesn't help anything though,
see the todo.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122660 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-01 19:54:22 +00:00
Chris Lattner
30980b6815
implement the "no aliasing accesses in loop" safety check. This pass
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should be correct now.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122659 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-01 19:39:01 +00:00
Rafael Espindola
7a54997d67
Fix PR8878.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122658 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-01 19:05:35 +00:00
Duncan Sands
7cf85e74e3
Fix a README item by having InstructionSimplify do a mild form of value
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numbering, in which it considers (for example) "%a = add i32 %x, %y" and
"%b = add i32 %x, %y" to be equal because the operands are equal and the
result of the instructions only depends on the values of the operands.
This has almost no effect (it removes 4 instructions from gcc-as-one-file),
and perhaps slows down compilation: I measured a 0.4% slowdown on the large
gcc-as-one-file testcase, but it wasn't statistically significant.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122654 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-01 16:12:09 +00:00
Che-Liang Chiou
c88e91b875
ptx: remove reg-reg addressing mode and st.const
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122653 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-01 11:58:58 +00:00
Che-Liang Chiou
ad83c1d383
ptx: add store instruction
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122652 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-01 10:50:37 +00:00
Oscar Fuentes
ba6f918a6d
Add to the list of cmake files the object file, not the asm file. This
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is necessary for executing the custom command that runs the
assember. Fixes PR8877.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122649 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-31 20:15:37 +00:00
Duncan Sands
8a3d29cf10
Simplify this pass by using a depth-first iterator to ensure that all
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operands are visited before the instructions themselves.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122647 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-31 17:49:05 +00:00
Duncan Sands
fea0b8b666
Zap dead instructions harder.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122645 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-31 16:17:54 +00:00
Benjamin Kramer
1928236514
Make a bunch of symbols internal.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122642 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-30 22:34:44 +00:00
Nick Lewycky
c00210cef2
Add another non-commutable instruction that gas accepts commuted forms for.
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Fixes PR8861.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122641 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-30 22:10:49 +00:00
Che-Liang Chiou
d34f19f7ba
ptx: add state spaces
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122638 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-30 10:41:27 +00:00
Chris Lattner
a797ee0210
include the module identifier when emitting this warning, PR8865.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122637 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-30 02:49:45 +00:00
Chris Lattner
c7bad77606
print the right string, thanks for Frits for noticing.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122636 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-30 01:07:20 +00:00
Cameron Zwarich
d16ad3e43c
Use getVRegDef() instead of def_iterator. This leads to fewer defs being added
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with 2-address instructions, for about a 3.5% speedup of StrongPHIElimination on
403.gcc.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122635 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-30 00:42:23 +00:00
Chris Lattner
e0f6db369d
improve warning message to at least say what the triples are.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122632 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-29 22:41:18 +00:00
Wesley Peck
b4aec92453
Fix stack layout error in MBlaze backend.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122631 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-29 19:46:28 +00:00
Daniel Dunbar
b2624eda5a
MC/Mach-O/Thumb: Set the thumb bit in the symbol table.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122630 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-29 14:14:06 +00:00
Cameron Zwarich
dd061b3177
None of the other pass names in CodeGen have terminating periods.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122628 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-29 11:49:10 +00:00
Cameron Zwarich
1558f5ed19
Instead of processing every instruction when splitting interferences, only
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process those instructions that define phi sources. This is a 47% speedup of
StrongPHIElimination compile time on 403.gcc.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122627 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-29 11:00:09 +00:00
Venkatraman Govindaraju
12db7b68b6
SPARC backend fix: correctly passing arguments through stack
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122626 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-29 05:37:15 +00:00
Cameron Zwarich
7fb95d4235
Add a missing word to a comment.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122625 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-29 04:42:39 +00:00
Rafael Espindola
caf1158b0f
Correctly encode pcrel|indirect.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122624 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-29 04:31:26 +00:00
NAKAMURA Takumi
7d63a2c2e8
CMake: Add disabling optimization on MSVC8 and MSVC10 as workaround for some files in Target/ARM and Target/X86.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122623 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-29 03:59:27 +00:00
Cameron Zwarich
480b80a746
Add text explaining an assertion.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122617 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-29 03:52:51 +00:00
Rafael Espindola
9c54c14cad
Remove second return.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122616 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-29 02:42:33 +00:00
Rafael Espindola
a7e450574c
Fix bug when trying to output uint16_t or uint32_t.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122615 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-29 02:30:49 +00:00
Rafael Espindola
b40a71fda1
Implement cfi_def_cfa. Also don't convert to dwarf reg numbers twice. Looks
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like 6 is a fixed point of that and so the previous tests were OK :-)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122614 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-29 01:42:56 +00:00
Chris Lattner
e562dba845
fix PR8867: a crash handling fp128. Thanks to Nick for the testcase.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122613 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-29 01:33:36 +00:00
Rafael Espindola
b4601bd2ff
Implement cfi_def_cfa_register.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122612 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-29 00:26:06 +00:00
Rafael Espindola
b790a17efb
Initial .cfi_offset implementation.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122611 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-29 00:09:59 +00:00
Cameron Zwarich
cb584d08c0
Simplify some code in MachineVerifier that was doing the correct thing, but not
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in the most obvious way.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122610 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-28 23:45:38 +00:00
Rafael Espindola
3b78cdc57a
Don't produce a "DW_CFA_advance_loc 0".
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122609 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-28 23:38:03 +00:00
Cameron Zwarich
438e25ccdc
Revert the optimization in r122596. It is correct for all current targets, but
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it relies on assumptions that may not be true in the future.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122608 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-28 23:02:56 +00:00
Venkatraman Govindaraju
f661277a9b
Multiple SPARC backend fixes: added Y register; updated select_cc, subx, subxcc defs/uses;
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and fixed CustomInserter.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122607 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-28 20:39:17 +00:00
Chris Lattner
95ae676bc8
simplify this, isBytewiseValue handles the extra check. We still
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check for "multiple of a byte" in size to make it clear that the
>> 3 below is safe.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122604 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-28 18:53:48 +00:00
Chris Lattner
1dc5db2beb
add a note from llvmdev
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122603 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-28 18:45:02 +00:00
Rafael Espindola
fe024d0a62
Implement .cfi_remember_state and .cfi_restore_state.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122602 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-28 18:36:23 +00:00
Benjamin Kramer
e21083aa3a
Cast away "comparison between signed and unsigned integer" warnings.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122598 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-28 13:52:52 +00:00
Benjamin Kramer
3fee954b3e
Fix a signed/unsigned comparison warning.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122597 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-28 13:05:13 +00:00
Cameron Zwarich
92f0fcb6df
Avoid iterating every operand of an instruction in StrongPHIElimination, since
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we are only interested in the defs when discovering interferences.
This is a 28% speedup running StrongPHIElimination on 403.gcc.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122596 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-28 10:49:33 +00:00
Duncan Sands
2aea490e16
Pacify the compiler. BestWeight cannot in fact be used uninitialized
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in this function, but the compiler was warning that it might be when
doing a release build.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122595 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-28 10:07:15 +00:00
Duncan Sands
849ecb1431
Fix warning about size potentially being used uninitialized
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when doing a release build.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122594 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-28 10:02:42 +00:00
Duncan Sands
7922d34b60
Silence gcc warning about an unused variable when doing a release build.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122593 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-28 09:41:15 +00:00
Rafael Espindola
245a1e2041
Relax address updates in the eh_frame section.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122591 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-28 05:39:27 +00:00
Rafael Espindola
5bba084253
Start adding basic support for emitting the call frame instructions.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122590 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-28 04:15:37 +00:00
Michael J. Spencer
4213618088
Support/Path: Deprecate Path::hasMagicNumber and replace all uses with fs::has_magic.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122589 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-28 01:49:21 +00:00
Michael J. Spencer
628467ef1f
Support/PathV2: Implement has_magic.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122587 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-28 01:49:01 +00:00
Cameron Zwarich
c3ab20e62e
Change an assertion to assert what the code actually relies upon.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122586 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-27 22:08:42 +00:00
Chris Lattner
2e12f1ac6e
fix some issues Frits noticed, add AliasAnalysis as a dependency
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122585 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-27 18:39:08 +00:00
Rafael Espindola
bdc3167c08
Add support for .cfi_lsda.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122584 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-27 15:56:22 +00:00
Daniel Dunbar
e862453806
MC/Mach-O/Thumb: Select appropriate relocation types for Thumb.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122583 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-27 14:49:49 +00:00
Cameron Zwarich
4e7f23b1b6
Land a first cut at StrongPHIElimination. There are only 5 new test failures
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when running without the verifier, and I have not yet checked them to see if
the new results are still correct. There are more verifier failures, but they
all seem to be additional occurrences of verifier failures that occur with the
existing PHIElimination pass. There are a few obvious issues with the code:
1) It doesn't properly update the register equivalence classes during copy
insertion, and instead recomputes them before merging live intervals and
renaming registers. I wanted to keep this first patch simple for debugging
purposes, but it shouldn't be very hard to do this.
2) It doesn't mix the renaming and live interval merging with the copy insertion
process, which leads to a lot of virtual register churn. Virtual registers and
live intervals are created, only to later be merged into others. The code should
be smarter and only create a new virtual register if there is no existing
register in the same congruence class.
3) In one place the code uses a DenseMap per basic block, which is unnecessary
heap allocation. There should be an inline storage version of DenseMap.
I did a quick compile-time test of running llc on 403.gcc with and without
StrongPHIElimination. It is slightly slower with StrongPHIElimination, because
the small decrease in the coalescer runtime can't beat the increase in phi
elimination runtime. Perhaps fixing the above performance issues will narrow
the gap.
I also haven't yet run any tests of the quality of the generated code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122582 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-27 10:08:19 +00:00
Cameron Zwarich
4eee42cb28
Add knowledge of phi-def and phi-kill valnos to MachineVerifier's predecessor
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valno verification. The "Different value live out of predecessor" check is
incorrect in the case of phi-def valnos, so just skip that check for phi-def
valnos and instead check that all of the valnos for predecessors have phi-kill.
Fixes PR8863.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122581 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-27 05:17:23 +00:00
Michael J. Spencer
9170a0f02d
Support/PathV1: Deprecate GetRootDirectory.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122580 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-27 03:21:41 +00:00
Rafael Espindola
c3a561cb8e
Handle reloc_riprel_4byte_movq_load. Should make the bots happy.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122579 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-27 02:03:24 +00:00
Rafael Espindola
3a83c40ab6
Add support for the same encodings of the personality function that gnu as
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supports.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122577 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-27 00:36:05 +00:00
Benjamin Kramer
def548f9a0
BuildLibCalls: Nuke EmitMemCpy, EmitMemMove and EmitMemSet. They are dead and superseded by IRBuilder.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122576 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-27 00:25:32 +00:00
Benjamin Kramer
a1bf4ca773
SimplifyLibCalls: Use IRBuilder to simplify code.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122575 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-27 00:16:46 +00:00
Chris Lattner
9f39188def
have loop-idiom nuke instructions that feed stores that get removed.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122574 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-27 00:03:23 +00:00
Chris Lattner
a92ff91a96
implement enough of the memset inference algorithm to recognize and insert
...
memsets. This is still missing one important validity check, but this is enough
to compile stuff like this:
void test0(std::vector<char> &X) {
for (std::vector<char>::iterator I = X.begin(), E = X.end(); I != E; ++I)
*I = 0;
}
void test1(std::vector<int> &X) {
for (long i = 0, e = X.size(); i != e; ++i)
X[i] = 0x01010101;
}
With:
$ clang t.cpp -S -o - -O2 -emit-llvm | opt -loop-idiom | opt -O3 | llc
to:
__Z5test0RSt6vectorIcSaIcEE: ## @_Z5test0RSt6vectorIcSaIcEE
## BB#0: ## %entry
subq $8, %rsp
movq (%rdi), %rax
movq 8(%rdi), %rsi
cmpq %rsi, %rax
je LBB0_2
## BB#1: ## %bb.nph
subq %rax, %rsi
movq %rax, %rdi
callq ___bzero
LBB0_2: ## %for.end
addq $8, %rsp
ret
...
__Z5test1RSt6vectorIiSaIiEE: ## @_Z5test1RSt6vectorIiSaIiEE
## BB#0: ## %entry
subq $8, %rsp
movq (%rdi), %rax
movq 8(%rdi), %rdx
subq %rax, %rdx
cmpq $4, %rdx
jb LBB1_2
## BB#1: ## %for.body.preheader
andq $-4, %rdx
movl $1, %esi
movq %rax, %rdi
callq _memset
LBB1_2: ## %for.end
addq $8, %rsp
ret
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122573 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-26 23:42:51 +00:00
Chris Lattner
61db1f56d0
start using irbuilder to make mem intrinsics in a few passes.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122572 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-26 22:57:41 +00:00
Chris Lattner
c0d5496b8a
add methods to IRBuilder to create memcpy/memset/memmove.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122571 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-26 22:49:25 +00:00
Rafael Espindola
390b693dac
Fix .cfi_personality on 32 bit systems.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122570 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-26 22:47:37 +00:00
Rafael Espindola
98976610d2
Add support for @note. Patch by Jörg Sonnenberger.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122568 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-26 21:30:59 +00:00
Chris Lattner
22920b5986
sketch more of this out.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122567 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-26 20:45:45 +00:00
Rafael Espindola
d7c8ccae8e
Add basic support for .cfi_personality.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122566 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-26 20:20:31 +00:00
Chris Lattner
bb89710ddd
move isBytewiseValue out to ValueTracking.h/cpp
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122565 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-26 20:15:01 +00:00
Chris Lattner
e6bb649ec6
actually add the file...
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122563 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-26 19:39:38 +00:00
Chris Lattner
b0db161f5b
Start of a pass for recognizing memset and memcpy idioms.
...
No functionality yet.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122562 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-26 19:32:44 +00:00
Benjamin Kramer
3fed0d917d
Simplify code.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122561 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-26 15:23:45 +00:00
Chris Lattner
6dbb5dc5eb
fix some sort of weird pasto
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122560 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-26 12:05:11 +00:00
Chris Lattner
8a4893e013
add a note
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122559 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-26 03:53:31 +00:00
Chris Lattner
7ab3cc32d6
Generalize a previous change, fixing PR8855 - an valid large immediate
...
rejected by the mc assembler.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122557 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-25 21:36:35 +00:00
Chris Lattner
ae47be1ea0
don't lose TD info
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122556 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-25 20:52:04 +00:00
Chris Lattner
7569d79de1
switch the inliner alignment enforcement stuff to use the
...
getOrEnforceKnownAlignment function, which simplifies the code
and makes it stronger.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122555 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-25 20:42:38 +00:00
Chris Lattner
687140c818
Move getOrEnforceKnownAlignment out of instcombine into Transforms/Utils.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122554 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-25 20:37:57 +00:00
Michael J. Spencer
43ee29d418
Support/PathV1: Deprecate makeAbsolute and remove Unix impl because it annoys people.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122553 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-25 20:10:11 +00:00
Benjamin Kramer
49c7e3e290
Fix a thinko pointed out by Frits van Bommel: looking through global variables in isBytewiseValue is not safe.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122550 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-24 22:23:59 +00:00
Rafael Espindola
fea753b397
Merge IsFixupFullyResolved and IsSymbolRefDifferenceFullyResolved. We now
...
have a single point where targets test if a relocation is needed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122549 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-24 21:22:02 +00:00
Benjamin Kramer
a112087e42
MemCpyOpt: Turn memcpys from a constant into a memset if possible.
...
This allows us to compile "int cst[] = {-1, -1, -1};" into
movl $-1, 16(%rsp)
movq $-1, 8(%rsp)
instead of
movl _cst+8(%rip), %eax
movl %eax, 16(%rsp)
movq _cst(%rip), %rax
movq %rax, 8(%rsp)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122548 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-24 21:17:12 +00:00
Daniel Dunbar
4010dd72b8
MC/Mach-O/ARM: Start handling some Thumb branches.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122547 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-24 16:41:46 +00:00
Andrew Trick
a75ce9f5d2
Minor cleanup related to my latest scheduler changes.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122545 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-24 07:10:19 +00:00
Andrew Trick
24312230ad
Fix a few cases where the scheduler is not checking for phys reg copies. The scheduling node may have a NULL DAG node, yuck.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122544 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-24 06:46:50 +00:00
Andrew Trick
2da8bc8a5f
Various bits of framework needed for precise machine-level selection
...
DAG scheduling during isel. Most new functionality is currently
guarded by -enable-sched-cycles and -enable-sched-hazard.
Added InstrItineraryData::IssueWidth field, currently derived from
ARM itineraries, but could be initialized differently on other targets.
Added ScheduleHazardRecognizer::MaxLookAhead to indicate whether it is
active, and if so how many cycles of state it holds.
Added SchedulingPriorityQueue::HasReadyFilter to allowing gating entry
into the scheduler's available queue.
ScoreboardHazardRecognizer now accesses the ScheduleDAG in order to
get information about it's SUnits, provides RecedeCycle for bottom-up
scheduling, correctly computes scoreboard depth, tracks IssueCount, and
considers potential stall cycles when checking for hazards.
ScheduleDAGRRList now models machine cycles and hazards (under
flags). It tracks MinAvailableCycle, drives the hazard recognizer and
priority queue's ready filter, manages a new PendingQueue, properly
accounts for stall cycles, etc.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122541 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-24 05:03:26 +00:00
Andrew Trick
6e8f4c4048
whitespace
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122539 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-24 04:28:06 +00:00
Cameron Zwarich
ef485d8658
Simplify a check for implicit defs and remove a FIXME.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122537 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-24 03:09:36 +00:00
Kevin Enderby
d82ed5b734
In llvm-mc parse a Hash token as a full line comment. Allows handling of
...
preprocessed .s files and matches darwin gas. rdar://8798690
Also fix a comment on the next line of AsmParser.cpp after this new code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122531 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-24 00:12:02 +00:00
Jim Grosbach
f12eee75d1
Use a StringSwitch<> instead of a manually constructed string matcher.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122530 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-24 00:03:39 +00:00
Owen Anderson
ec3953ff95
When determining if we can fold (x >> C1) << C2, the bits that we need to verify are zero
...
are not the low bits of x, but the bits that WILL be the low bits after the operation completes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122529 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-23 23:56:24 +00:00
Evan Cheng
e4a2dd2f1a
Code clean up. No functionality change.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122528 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-23 23:54:17 +00:00
Jim Grosbach
b0ad9cf935
Remove dead patterns.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122524 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-23 23:20:13 +00:00
Jim Grosbach
940c8e5494
Recognize a few more documented register name aliases for ARM in the asm lexer.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122523 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-23 23:19:54 +00:00
Bob Wilson
3c904694fc
Radar 8803471: Fix expansion of ARM BCCi64 pseudo instructions.
...
If the basic block containing the BCCi64 (or BCCZi64) instruction ends with
an unconditional branch, that branch needs to be deleted before appending
the expansion of the BCCi64 to the end of the block.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122521 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-23 22:45:49 +00:00
Owen Anderson
d5f8684b16
It is possible for SimplifyCFG to cause PHI nodes to become redundant too late in the optimization
...
pipeline to be caught by instcombine, and it's not feasible to catch them in SimplifyCFG because the
use-lists are in an inconsistent state at the point where it could know that it need to simplify them.
Instead, have CodeGenPrepare look for trivially redundant PHIs as part of its general cleanup effort.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122516 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-23 20:57:35 +00:00
Chris Lattner
036609bd7d
Flag -> Glue, the ongoing saga
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122513 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-23 18:28:41 +00:00
Chris Lattner
29d8f0cae4
flags -> glue for selectiondag
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122509 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-23 17:24:32 +00:00
Chris Lattner
a4359be032
sdisel flag -> glue.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122507 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-23 17:13:18 +00:00
Benjamin Kramer
9d071cbb92
Remove/fix invalid README entries. The well thought out strcpy function doesn't return a pointer to the end of the string.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122496 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-23 15:32:07 +00:00
Benjamin Kramer
3e4106105b
Remove some obsolete README items, add a new one off the top of my head.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122495 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-23 15:07:02 +00:00
Andrew Trick
2902736a50
Reorganize ListScheduleBottomUp in preparation for modeling machine cycles and instruction issue.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122491 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-23 05:42:20 +00:00
Andrew Trick
3d420cb2fe
Converted LiveRegCycles to LiveRegGens. It's easier to work with and allows multiple nodes per cycle.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122474 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-23 04:16:14 +00:00
Andrew Trick
cb7947b81b
In CheckForLiveRegDef use TRI->getOverlaps.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122473 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-23 03:43:21 +00:00
Andrew Trick
1b1658741a
Fixes PR8823: add-with-overflow-128.ll
...
In the bottom-up selection DAG scheduling, handle two-address
instructions that read/write unspillable registers. Treat
the entire chain of two-address nodes as a single live range.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122472 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-23 03:15:51 +00:00
Mon P Wang
e90a6333c3
Preserve the address space when generating bitcasts for MemTransferInst in ConvertToScalarInfo
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122462 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-23 01:41:32 +00:00
Jeffrey Yasskin
8e68c38735
Change all self assignments X=X to (void)X, so that we can turn on a
...
new gcc warning that complains on self-assignments and
self-initializations.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122458 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-23 00:58:24 +00:00
Jim Grosbach
9584bd83e6
Trailing whitespace.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122456 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-22 23:26:02 +00:00
Benjamin Kramer
f50125ecaa
DAGCombine add (sext i1), X into sub X, (zext i1) if sext from i1 is illegal. The latter usually compiles into smaller code.
...
example code:
unsigned foo(unsigned x, unsigned y) {
if (x != 0) y--;
return y;
}
before:
_foo: ## @foo
cmpl $1, 4(%esp) ## encoding: [0x83,0x7c,0x24,0x04,0x01]
sbbl %eax, %eax ## encoding: [0x19,0xc0]
notl %eax ## encoding: [0xf7,0xd0]
addl 8(%esp), %eax ## encoding: [0x03,0x44,0x24,0x08]
ret ## encoding: [0xc3]
after:
_foo: ## @foo
cmpl $1, 4(%esp) ## encoding: [0x83,0x7c,0x24,0x04,0x01]
movl 8(%esp), %eax ## encoding: [0x8b,0x44,0x24,0x08]
adcl $-1, %eax ## encoding: [0x83,0xd0,0xff]
ret ## encoding: [0xc3]
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122455 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-22 23:17:45 +00:00
Benjamin Kramer
4ac19470dc
InstCombine: creating selects from -1 and 0 is fine, they combine into a sext from i1.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122453 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-22 23:12:15 +00:00
Benjamin Kramer
e915ff30cd
X86: Lower a select directly to a setcc_carry if possible.
...
int test(unsigned long a, unsigned long b) { return -(a < b); }
compiles to
_test: ## @test
cmpq %rsi, %rdi ## encoding: [0x48,0x39,0xf7]
sbbl %eax, %eax ## encoding: [0x19,0xc0]
ret ## encoding: [0xc3]
instead of
_test: ## @test
xorl %ecx, %ecx ## encoding: [0x31,0xc9]
cmpq %rsi, %rdi ## encoding: [0x48,0x39,0xf7]
movl $-1, %eax ## encoding: [0xb8,0xff,0xff,0xff,0xff]
cmovael %ecx, %eax ## encoding: [0x0f,0x43,0xc1]
ret ## encoding: [0xc3]
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122451 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-22 23:09:28 +00:00
Rafael Espindola
10b6d33581
Add r122359 back now that the bug in MCDwarfLineAddrFragment fragment has been
...
fixed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122448 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-22 22:16:24 +00:00
Rafael Espindola
835439a397
Assert that the AddrDelta expression is really constant and wrap it in a set
...
if we have a lame assembler.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122446 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-22 22:04:28 +00:00
Jakob Stoklund Olesen
770d42de3b
When RegAllocGreedy decides to spill the interferences of the current register,
...
pick the victim with the lowest total spill weight.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122445 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-22 22:01:30 +00:00
Jakob Stoklund Olesen
c64379da07
Include a shadow of the original CFG edges in the edge bundle graph.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122444 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-22 22:01:28 +00:00
Rafael Espindola
90a5a0cd7c
Rename NeedsSetToChangeDiffSize to HasAggressiveSymbolFolding which is a much
...
better name and matches what is used in the MachO writer.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122443 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-22 21:51:29 +00:00
Daniel Dunbar
72123334ad
MC/Mach-O/ARM: Don't try to use scattered relocs for BR24 fixups.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122441 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-22 21:26:43 +00:00
Rafael Espindola
bf57b838b8
Revert r122359 while I debug PR8845.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122427 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-22 19:05:49 +00:00
Matt Beaumont-Gay
33a03c73ef
Fix another conditional expression mismatched enum type warning.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122419 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-22 18:25:55 +00:00
Duncan Sands
1cd05bb605
When determining whether the new instruction was already present in
...
the original instruction, half the cases were missed (making it not
wrong but suboptimal). Also correct a typo (A <-> B) in the second
chunk.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122414 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-22 17:15:25 +00:00
Daniel Dunbar
df561e0234
MC/Mach-O/ARM: We always use the SECTDIFF reloc type on ARM, which is
...
esp. important given that the LOCAL_SECTDIFF enumeration got redefined.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122412 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-22 16:52:19 +00:00
Daniel Dunbar
25bcc9cdc8
MC/Mach-O/ARM: Clone off an ARM version of RecordScatteredRelocation until I figure out how it is supposed to work.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122410 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-22 16:45:29 +00:00
Daniel Dunbar
5cc6390495
MC/Mach-O: Return to reporting errors if we see unexpected fixup kinds.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122409 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-22 16:32:41 +00:00
Daniel Dunbar
3664564395
MC/Mach-O/ARM: Recognize generic _Data_N fixup kinds.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122408 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-22 16:32:37 +00:00
Daniel Dunbar
294e67861c
MC/Mach-O/ARM: Add enough relocation logic to get BR24 relocations.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122407 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-22 16:19:24 +00:00
Daniel Dunbar
fdfbc6a652
MC/Mach-O/ARM: Fix thinko.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122406 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-22 16:19:20 +00:00
Rafael Espindola
33a38a1b5a
Use references and simplify.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122405 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-22 16:11:57 +00:00
Rafael Espindola
f01212489b
Simplify the handling of .size expressions.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122404 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-22 16:03:00 +00:00
Daniel Dunbar
4d74305a1f
MC/Mach-O/ARM: Stub out RecordARMRelocation, which is mostly a copy of
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RecordRelocation with lots of FIXMEs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122402 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-22 13:50:05 +00:00
Daniel Dunbar
42b5286627
Simplify.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122401 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-22 13:49:56 +00:00
Daniel Dunbar
532c456d48
MC/Mach-O: Split out RecordARMRelocation for now, it is weird enough it isn't
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clear how to keep in the generic path (yet).
- Will revisit when it actually works.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122400 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-22 13:49:43 +00:00