Chris Lattner
cf078f2b20
Allow loop-idiom to run on multiple BB loops, but still only scan the loop
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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.
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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.
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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
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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