Chris Lattner [Mon, 3 Jan 2011 18:43:03 +0000 (18:43 +0000)]
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-
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Chris Lattner [Mon, 3 Jan 2011 18:28:15 +0000 (18:28 +0000)]
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-
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David Greene [Mon, 3 Jan 2011 17:30:25 +0000 (17:30 +0000)]
Reapply 122341 to fix PR8199 now that clang changes are in.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122754
91177308-0d34-0410-b5e6-
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Oscar Fuentes [Mon, 3 Jan 2011 16:59:52 +0000 (16:59 +0000)]
LLVMProcessSources: add .def files along with .h files to targets for
the benefit of project-based generators (VS, XCode, etc).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122749
91177308-0d34-0410-b5e6-
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Duncan Sands [Mon, 3 Jan 2011 10:50:04 +0000 (10:50 +0000)]
Speed up instsimplify by about 10-15% by not bothering to retry
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-
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Evan Cheng [Mon, 3 Jan 2011 07:53:18 +0000 (07:53 +0000)]
Undo what looks like accidental removal of an instcombine pass in r122740.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122743
91177308-0d34-0410-b5e6-
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Cameron Zwarich [Mon, 3 Jan 2011 06:33:01 +0000 (06:33 +0000)]
Switch a worklist in CodeGenPrepare to SmallVector and increase the inline
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-
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Chris Lattner [Mon, 3 Jan 2011 06:19:09 +0000 (06:19 +0000)]
Turn on earlycse by default. This seems to be a small performance
improvement in the generated code, and speeds up 'opt -std-compile-opts'
compile time on 176.gcc from 24.84s to 23.2s (about 7%).
This also resolves a specific code quality issue in rdar://
7352081 which
was generating poor code for:
int t(int a, int b) {
if (a & b & 1)
return a & b;
return 3;
}
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122740
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Nick Lewycky [Mon, 3 Jan 2011 06:16:07 +0000 (06:16 +0000)]
Further expand what a call graph pass may do.
The rationale is that after analyzing a function in the SCC, we may want to
modify it in a way that requires us to update its uses (f.e. to replace the
call with a constant) or its users (f.e. to call it with fewer arguments).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122739
91177308-0d34-0410-b5e6-
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Chris Lattner [Mon, 3 Jan 2011 04:17:24 +0000 (04:17 +0000)]
earlycse can do trivial with-a-block dead store
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-
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Cameron Zwarich [Mon, 3 Jan 2011 04:07:46 +0000 (04:07 +0000)]
Use a RecyclingAllocator to allocate values for MachineCSE's ScopedHashTable for
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-
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Nick Lewycky [Mon, 3 Jan 2011 04:01:44 +0000 (04:01 +0000)]
Permit CallGraphSCCPasses readonly access to the direct callers of the functions
in their SCC as they already have with the direct callees.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122734
91177308-0d34-0410-b5e6-
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Chris Lattner [Mon, 3 Jan 2011 03:53:50 +0000 (03:53 +0000)]
switch the load table to use a recycling bump pointer allocator,
speeding earlycse up by 6%.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122733
91177308-0d34-0410-b5e6-
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Chris Lattner [Mon, 3 Jan 2011 03:46:34 +0000 (03:46 +0000)]
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-
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Chris Lattner [Mon, 3 Jan 2011 03:41:27 +0000 (03:41 +0000)]
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-
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Chris Lattner [Mon, 3 Jan 2011 03:33:47 +0000 (03:33 +0000)]
add a testcase for readonly call CSE
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122730
91177308-0d34-0410-b5e6-
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Chris Lattner [Mon, 3 Jan 2011 03:28:23 +0000 (03:28 +0000)]
various cleanups, no functionality change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122729
91177308-0d34-0410-b5e6-
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Nick Lewycky [Mon, 3 Jan 2011 03:19:35 +0000 (03:19 +0000)]
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
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Chris Lattner [Mon, 3 Jan 2011 03:18:43 +0000 (03:18 +0000)]
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-
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Chris Lattner [Mon, 3 Jan 2011 03:16:20 +0000 (03:16 +0000)]
add a handy typedef.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122726
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Chris Lattner [Mon, 3 Jan 2011 02:20:48 +0000 (02:20 +0000)]
rename InstValue to SimpleValue, add some comments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122725
91177308-0d34-0410-b5e6-
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Michael J. Spencer [Mon, 3 Jan 2011 02:13:05 +0000 (02:13 +0000)]
CMake: Add missing source file.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122724
91177308-0d34-0410-b5e6-
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Chris Lattner [Mon, 3 Jan 2011 01:42:46 +0000 (01:42 +0000)]
Allocate nodes for the scoped hash table from a recyling bump pointer
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-
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Chris Lattner [Mon, 3 Jan 2011 01:38:29 +0000 (01:38 +0000)]
really get this working with a custom allocator.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122722
91177308-0d34-0410-b5e6-
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Chris Lattner [Mon, 3 Jan 2011 01:29:37 +0000 (01:29 +0000)]
Enhance ScopedHashTable to allow it to take an allocator argument.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122721
91177308-0d34-0410-b5e6-
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Chris Lattner [Mon, 3 Jan 2011 01:10:08 +0000 (01:10 +0000)]
reduce redundancy in the hashing code and other misc cleanups.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122720
91177308-0d34-0410-b5e6-
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Cameron Zwarich [Mon, 3 Jan 2011 00:25:16 +0000 (00:25 +0000)]
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-
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Chris Lattner [Sun, 2 Jan 2011 23:29:58 +0000 (23:29 +0000)]
fix some pastos
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122718
91177308-0d34-0410-b5e6-
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Chris Lattner [Sun, 2 Jan 2011 23:19:45 +0000 (23:19 +0000)]
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-
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Chris Lattner [Sun, 2 Jan 2011 23:04:14 +0000 (23:04 +0000)]
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-
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Chris Lattner [Sun, 2 Jan 2011 22:09:33 +0000 (22:09 +0000)]
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-
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Chris Lattner [Sun, 2 Jan 2011 21:47:05 +0000 (21:47 +0000)]
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-
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Chris Lattner [Sun, 2 Jan 2011 21:14:18 +0000 (21:14 +0000)]
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-
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Chris Lattner [Sun, 2 Jan 2011 20:24:21 +0000 (20:24 +0000)]
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-
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Benjamin Kramer [Sun, 2 Jan 2011 19:57:05 +0000 (19:57 +0000)]
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
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Benjamin Kramer [Sun, 2 Jan 2011 19:44:58 +0000 (19:44 +0000)]
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-
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Oscar Fuentes [Sun, 2 Jan 2011 19:32:31 +0000 (19:32 +0000)]
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-
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Nick Lewycky [Sun, 2 Jan 2011 19:16:44 +0000 (19:16 +0000)]
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-
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Chris Lattner [Sun, 2 Jan 2011 19:01:03 +0000 (19:01 +0000)]
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-
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Chris Lattner [Sun, 2 Jan 2011 18:53:08 +0000 (18:53 +0000)]
make inSubLoop much more efficient.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122703
91177308-0d34-0410-b5e6-
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Chris Lattner [Sun, 2 Jan 2011 18:45:39 +0000 (18:45 +0000)]
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-
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Chris Lattner [Sun, 2 Jan 2011 18:32:09 +0000 (18:32 +0000)]
add a list of opportunities for future improvement.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122701
91177308-0d34-0410-b5e6-
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Chris Lattner [Sun, 2 Jan 2011 18:31:38 +0000 (18:31 +0000)]
update a bunch of entries.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122700
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Duncan Sands [Sun, 2 Jan 2011 13:38:21 +0000 (13:38 +0000)]
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-
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Cameron Zwarich [Sun, 2 Jan 2011 12:37:22 +0000 (12:37 +0000)]
Remove an unused member function.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122693
91177308-0d34-0410-b5e6-
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Oscar Fuentes [Sun, 2 Jan 2011 12:30:18 +0000 (12:30 +0000)]
Propagate to parent scope changes made to CMAKE_CXX_FLAGS.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122692
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Cameron Zwarich [Sun, 2 Jan 2011 12:17:10 +0000 (12:17 +0000)]
Fix a typo in a variable name.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122691
91177308-0d34-0410-b5e6-
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Cameron Zwarich [Sun, 2 Jan 2011 10:50:14 +0000 (10:50 +0000)]
Move a load into the only branch where it is used and eliminate a temporary.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122690
91177308-0d34-0410-b5e6-
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Cameron Zwarich [Sun, 2 Jan 2011 10:40:14 +0000 (10:40 +0000)]
Add the explanatory comment from r122680's commit message to the code itself.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122689
91177308-0d34-0410-b5e6-
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Cameron Zwarich [Sun, 2 Jan 2011 10:10:02 +0000 (10:10 +0000)]
Tidy up indentation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122688
91177308-0d34-0410-b5e6-
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Cameron Zwarich [Sun, 2 Jan 2011 10:06:44 +0000 (10:06 +0000)]
Fix a typo, which should also fix the failure on llvm-x86_64-linux-checks.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122687
91177308-0d34-0410-b5e6-
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Chris Lattner [Sun, 2 Jan 2011 07:58:36 +0000 (07:58 +0000)]
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-
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Cameron Zwarich [Sun, 2 Jan 2011 07:53:49 +0000 (07:53 +0000)]
Remove the #ifdef'd code for balancing the eval-link data structure. It doesn't
compile, and everyone's tests have shown it to be slower in practice, even for
quite large graphs.
I also hope to do an optimization that is only correct with the simpler data
structure, which would break this even further.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122684
91177308-0d34-0410-b5e6-
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Chris Lattner [Sun, 2 Jan 2011 07:37:13 +0000 (07:37 +0000)]
remove debugging code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122683
91177308-0d34-0410-b5e6-
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Chris Lattner [Sun, 2 Jan 2011 07:36:44 +0000 (07:36 +0000)]
add some -stats output.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122682
91177308-0d34-0410-b5e6-
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Chris Lattner [Sun, 2 Jan 2011 07:35:53 +0000 (07:35 +0000)]
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-
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Cameron Zwarich [Sun, 2 Jan 2011 07:03:00 +0000 (07:03 +0000)]
Speed up dominator computation some more by optimizing bucket processing. When
naively implemented, the Lengauer-Tarjan algorithm requires a separate bucket
for each vertex. However, this is unnecessary, because each vertex is only
placed into a single bucket (that of its semidominator), and each vertex's
bucket is processed before it is added to any bucket itself.
Instead of using a bucket per vertex, we use a single array Buckets that has two
purposes. Before the vertex V with DFS number i is processed, Buckets[i] stores
the index of the first element in V's bucket. After V's bucket is processed,
Buckets[i] stores the index of the next element in the bucket to which V now
belongs, if any.
Reading from the buckets can also be optimized. Instead of processing the bucket
of V's parent at the end of processing V, we process the bucket of V itself at
the beginning of processing V. This means that the case of the root vertex can
be simplified somewhat. It also means that we don't need to look up the DFS
number of the semidominator of every node in the bucket we are processing,
since we know it is the current index being processed.
This is a 6.5% speedup running -domtree on test-suite + SPEC2000/2006, with
larger speedups of around 12% on the larger benchmarks like GCC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122680
91177308-0d34-0410-b5e6-
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Chris Lattner [Sun, 2 Jan 2011 03:37:56 +0000 (03:37 +0000)]
teach loop idiom recognition to form memcpy's from simple loops.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122678
91177308-0d34-0410-b5e6-
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Nick Lewycky [Sun, 2 Jan 2011 02:46:33 +0000 (02:46 +0000)]
Remove functions from the FnSet when one of their callee's is being merged. This
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-
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Chris Lattner [Sat, 1 Jan 2011 22:57:31 +0000 (22:57 +0000)]
a missed __builtin_object_size case.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122676
91177308-0d34-0410-b5e6-
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Chris Lattner [Sat, 1 Jan 2011 22:52:11 +0000 (22:52 +0000)]
various updates.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122675
91177308-0d34-0410-b5e6-
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Chris Lattner [Sat, 1 Jan 2011 22:31:46 +0000 (22:31 +0000)]
fix a globalopt crash on two Adobe-C++ testcases that the recent
loop idiom pass exposed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122674
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Rafael Espindola [Sat, 1 Jan 2011 21:58:41 +0000 (21:58 +0000)]
Fix darwin bots.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122672
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Benjamin Kramer [Sat, 1 Jan 2011 21:53:18 +0000 (21:53 +0000)]
Remove empty directories left behind by git-svn users.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122671
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Rafael Espindola [Sat, 1 Jan 2011 20:58:46 +0000 (20:58 +0000)]
Add support for the 'H' modifier.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122667
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Anton Korobeynikov [Sat, 1 Jan 2011 20:57:26 +0000 (20:57 +0000)]
Update the test
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122666
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Chris Lattner [Sat, 1 Jan 2011 20:39:18 +0000 (20:39 +0000)]
turn on memset idiom recognition by default. Though there are still lots of
limitations, this kicks in dozens of times in the 4 specfp2000 benchmarks,
and hundreds of times in the int part. It also kicks in hundreds of times
in multisource.
This kicks in right before loop deletion, which has the pleasant effect of
deleting loops that *just* do a memset.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122664
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Anton Korobeynikov [Sat, 1 Jan 2011 20:38:38 +0000 (20:38 +0000)]
Model operand restrictions of mul-like instructions on ARMv5 via
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
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Chris Lattner [Sat, 1 Jan 2011 20:12:04 +0000 (20:12 +0000)]
add a validity check that was missed, fixing a crash on the
new testcase.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122662
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Duncan Sands [Sat, 1 Jan 2011 20:08:02 +0000 (20:08 +0000)]
Revert commit 122654 at the request of Chris, who reckons that instsimplify
is the wrong hammer for this nail, and is probably right.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122661
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Chris Lattner [Sat, 1 Jan 2011 19:54:22 +0000 (19:54 +0000)]
improve validity check to handle constant-trip-count loops more
aggressively. In practice, this doesn't help anything though,
see the todo.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122660
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Chris Lattner [Sat, 1 Jan 2011 19:39:01 +0000 (19:39 +0000)]
implement the "no aliasing accesses in loop" safety check. This pass
should be correct now.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122659
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Rafael Espindola [Sat, 1 Jan 2011 19:05:35 +0000 (19:05 +0000)]
Fix PR8878.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122658
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Duncan Sands [Sat, 1 Jan 2011 17:37:07 +0000 (17:37 +0000)]
Correct a bunch of mistakes which meant that the example pass didn't
even compile, let alone work.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122657
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Duncan Sands [Sat, 1 Jan 2011 17:28:49 +0000 (17:28 +0000)]
I was unable to get the instructions to work if LLVM was built
using a separate objects directory.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122656
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Duncan Sands [Sat, 1 Jan 2011 17:21:58 +0000 (17:21 +0000)]
Clarify that the loadable module turns up in the top-level directory,
not locally.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122655
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Duncan Sands [Sat, 1 Jan 2011 16:12:09 +0000 (16:12 +0000)]
Fix a README item by having InstructionSimplify do a mild form of value
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
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Che-Liang Chiou [Sat, 1 Jan 2011 11:58:58 +0000 (11:58 +0000)]
ptx: remove reg-reg addressing mode and st.const
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122653
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Che-Liang Chiou [Sat, 1 Jan 2011 10:50:37 +0000 (10:50 +0000)]
ptx: add store instruction
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122652
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Erick Tryzelaar [Sat, 1 Jan 2011 03:29:25 +0000 (03:29 +0000)]
Add a reference to the OCamlLangImpl8.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122651
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Erick Tryzelaar [Sat, 1 Jan 2011 03:27:43 +0000 (03:27 +0000)]
Add an OCaml tutorial page 8
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122650
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Oscar Fuentes [Fri, 31 Dec 2010 20:15:37 +0000 (20:15 +0000)]
Add to the list of cmake files the object file, not the asm file. This
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
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Oscar Fuentes [Fri, 31 Dec 2010 19:10:49 +0000 (19:10 +0000)]
CMake (MSVC): cmake automatically adds the /EHsc and /GR compiler
options. If we are building with exceptions/rtti disabled, we replace
/EHsc with /EHs-c- and /GR with /GR-, respectively. If we just add the
disabling options we get warnings like this:
cl : Command line warning D9025 : overriding '/EHs' with '/EHs-'
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122648
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Duncan Sands [Fri, 31 Dec 2010 17:49:05 +0000 (17:49 +0000)]
Simplify this pass by using a depth-first iterator to ensure that all
operands are visited before the instructions themselves.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122647
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Duncan Sands [Fri, 31 Dec 2010 16:17:54 +0000 (16:17 +0000)]
Zap dead instructions harder.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122645
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Benjamin Kramer [Thu, 30 Dec 2010 22:34:44 +0000 (22:34 +0000)]
Make a bunch of symbols internal.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122642
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Nick Lewycky [Thu, 30 Dec 2010 22:10:49 +0000 (22:10 +0000)]
Add another non-commutable instruction that gas accepts commuted forms for.
Fixes PR8861.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122641
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Che-Liang Chiou [Thu, 30 Dec 2010 10:41:27 +0000 (10:41 +0000)]
ptx: add state spaces
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122638
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Chris Lattner [Thu, 30 Dec 2010 02:49:45 +0000 (02:49 +0000)]
include the module identifier when emitting this warning, PR8865.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122637
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Chris Lattner [Thu, 30 Dec 2010 01:07:20 +0000 (01:07 +0000)]
print the right string, thanks for Frits for noticing.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122636
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Cameron Zwarich [Thu, 30 Dec 2010 00:42:23 +0000 (00:42 +0000)]
Use getVRegDef() instead of def_iterator. This leads to fewer defs being added
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
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Chris Lattner [Wed, 29 Dec 2010 22:41:18 +0000 (22:41 +0000)]
improve warning message to at least say what the triples are.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122632
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Wesley Peck [Wed, 29 Dec 2010 19:46:28 +0000 (19:46 +0000)]
Fix stack layout error in MBlaze backend.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122631
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Daniel Dunbar [Wed, 29 Dec 2010 14:14:06 +0000 (14:14 +0000)]
MC/Mach-O/Thumb: Set the thumb bit in the symbol table.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122630
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Cameron Zwarich [Wed, 29 Dec 2010 11:49:10 +0000 (11:49 +0000)]
None of the other pass names in CodeGen have terminating periods.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122628
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Cameron Zwarich [Wed, 29 Dec 2010 11:00:09 +0000 (11:00 +0000)]
Instead of processing every instruction when splitting interferences, only
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
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Venkatraman Govindaraju [Wed, 29 Dec 2010 05:37:15 +0000 (05:37 +0000)]
SPARC backend fix: correctly passing arguments through stack
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122626
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Cameron Zwarich [Wed, 29 Dec 2010 04:42:39 +0000 (04:42 +0000)]
Add a missing word to a comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122625
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Rafael Espindola [Wed, 29 Dec 2010 04:31:26 +0000 (04:31 +0000)]
Correctly encode pcrel|indirect.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122624
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NAKAMURA Takumi [Wed, 29 Dec 2010 03:59:27 +0000 (03:59 +0000)]
CMake: Add disabling optimization on MSVC8 and MSVC10 as workaround for some files in Target/ARM and Target/X86.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122623
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