Chris Lattner
d38f208cd9
Fix a faulty optimization on FP values
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11801 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-24 18:10:14 +00:00
Chris Lattner
d8864ce766
Generate much more efficient code in programs like pifft
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11775 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-23 21:46:58 +00:00
Chris Lattner
077a373791
Fix a small typeo in my checkin last night that broke vortex and other programs :(
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11774 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-23 21:46:42 +00:00
Chris Lattner
8adac75298
Fix InstCombine/2004-02-23-ShiftShiftOverflow.ll
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Also, turn 'shr int %X, 1234' into 'shr int %X, 31'
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11768 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-23 20:30:06 +00:00
Chris Lattner
c5943fb186
Implement cast.ll::test14/15
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11742 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-23 07:16:20 +00:00
Chris Lattner
4cb170cc6e
Refactor some code. In the mul - setcc folding case, we really care about
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whether this is the sign bit or not, so check unsigned comparisons as well.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11740 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-23 06:38:22 +00:00
Chris Lattner
fed58fd72e
Implement mul.ll:test11
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11737 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-23 06:00:11 +00:00
Chris Lattner
45aaafef49
Implement "strength reduction" of X <= C and X >= C
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11735 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-23 05:47:48 +00:00
Chris Lattner
fb54b2b744
Implement InstCombine/mul.ll:test10, which is a case that occurs when dealing
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with "predication"
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11734 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-23 05:39:21 +00:00
Chris Lattner
c6bd195336
Implement Transforms/InstCombine/cast.ll:test13, a case which occurs in a
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hot 164.gzip loop.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11702 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-22 05:25:17 +00:00
Chris Lattner
7059f2e76b
Fold PHI nodes of constants which are only used by a single cast. This implements
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phi.ll:test4
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11494 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-16 05:07:08 +00:00
Chris Lattner
26ca7e145e
Teach LLVM to unravel the "swap idiom". This implements:
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Regression/Transforms/InstCombine/xor.ll:test20
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11492 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-16 03:54:20 +00:00
Chris Lattner
c317d39887
Implement Transforms/InstCombine/xor.ll:test19
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11490 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-16 01:20:27 +00:00
Chris Lattner
de512b5b2e
Adjustments to support the new ConstantAggregateZero class
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11474 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-15 05:55:15 +00:00
Chris Lattner
5f55aaf0f0
Remove obsolete comment. Unreachable blocks will automatically be left at the
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end of the function.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11313 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-11 05:20:50 +00:00
Chris Lattner
206805e172
Add an _embarassingly simple_ implementation of basic block layout. This is
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more of a testcase for profiling information than anything that should reasonably
be used, but it's a starting point. When I have more time I will whip this into
better shape.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11311 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-11 04:53:20 +00:00
Chris Lattner
aeb2a1d708
rename the "exceptional" destination of an invoke instruction to the 'unwind' dest
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11202 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-08 21:44:31 +00:00
Chris Lattner
79fc865ccb
Add debug output
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11139 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-05 22:33:19 +00:00
Chris Lattner
c24a076c6a
Adjust to the new BasicBlock ctor, which requires a function parameter
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11114 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-04 03:58:28 +00:00
Chris Lattner
0517e72096
Disable (x - (y - z)) => (x + (z - y)) optimization for floating point.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11083 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-02 20:09:56 +00:00
Chris Lattner
529429224c
Update comment
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11082 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-02 20:09:22 +00:00
Chris Lattner
c23396e8de
Disable tail duplication in any "hard" cases, where it might break SSA form.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11052 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-01 06:32:28 +00:00
Chris Lattner
e400a0976f
Fix the count of the number of instructions removed
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11049 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-01 05:15:07 +00:00
Chris Lattner
f78616b339
Fix InstCombine/2004-01-13-InstCombineInvokePHI.ll, which also fixes lots
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of C++ programs in Shootout-C++, including lists1 and moments, etc
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10845 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-14 06:06:08 +00:00
Chris Lattner
76f7fe25d9
Fix bug in previous checkin
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10798 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-12 19:47:05 +00:00
Chris Lattner
7c4049c5a0
Eliminate use of ConstantHandling and ConstantExpr::getShift interfaces
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10796 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-12 19:35:11 +00:00
Chris Lattner
b6ac8bc586
Add header file I accidentally removed in teh shuffle
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10795 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-12 19:15:20 +00:00
Chris Lattner
5585b335e5
Remove use of the ConstantHandling interfaces
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10793 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-12 19:12:50 +00:00
Chris Lattner
b16689b647
Don't use ConstantExpr::getShift anymore
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10791 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-12 19:08:43 +00:00
Chris Lattner
e5d4f1b9e7
Remove unneeded #include
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10788 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-12 18:33:54 +00:00
Chris Lattner
b7a5d3edee
Use constantexprs for casts. Eliminate use of the ConstantHandling interfaces
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10779 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-12 17:43:40 +00:00
Chris Lattner
84831642e4
Fix fairly severe bug in my last checking where we treated all unfoldable
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constants as being "true" when evaluating branches. This was introduced
because we now create constantexprs for the constants instead of failing the
fold.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10778 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-12 17:40:36 +00:00
Chris Lattner
c6a4d6a066
* Implement minor performance optimization for the getelementptr case
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* Implement SCCP of load instructions, implementing Transforms/SCCP/loadtest.ll
This allows us to fold expressions like "foo"[2], even if the pointer is only
a conditional constant.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10767 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-12 04:29:41 +00:00
Chris Lattner
5f16a13896
Do not hack on volatile loads. I'm not sure what the point of a volatile load
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from constant memory is, but lets not take chances.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10765 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-12 04:13:56 +00:00
Chris Lattner
1daee8b010
Implement SCCP/phitest.ll
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10763 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-12 03:57:30 +00:00
Chris Lattner
2cacc0a306
Update obsolete comments
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Fix iterator invalidation problems which was causing -mstrip to miss some
entries, and read free'd memory. This shrinks the symbol table of 254.gap
from 333 to 284 bytes! :)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10751 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-10 21:36:49 +00:00
Chris Lattner
d745602662
Finegrainify namespacification
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10725 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-09 06:02:20 +00:00
Chris Lattner
329c1c6c94
Improve encapsulation in the Loop and LoopInfo classes by eliminating the
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getSubLoops/getTopLevelLoops methods, replacing them with iterator-based
accessors.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10714 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-08 00:09:44 +00:00
Chris Lattner
15cad759fe
More minor non-functional changes. This now computes the exit condition, though
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it doesn't do anything with it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10590 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-23 07:47:09 +00:00
Chris Lattner
500597a1c3
Don't mind me, I'm just refactoring away. This patch makes room for LFTR, but
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contains no functionality changes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10583 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-22 09:53:29 +00:00
Chris Lattner
18b3c97bc7
Implement IndVarsSimplify/pointer-indvars.ll, transforming pointer
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arithmetic into "array subscripts"
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10580 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-22 05:02:01 +00:00
Chris Lattner
3324e718bc
Fix PR194
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10573 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-22 03:58:44 +00:00
Chris Lattner
bd1a90ecc7
Fix ADCE/2003-12-19-MergeReturn.llx
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10539 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-19 09:08:34 +00:00
Chris Lattner
a3df8a964a
Remove the wierd "Operands" loop, by traversing basicblocks in reverse order
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10536 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-19 08:18:16 +00:00
Chris Lattner
e4365b2e8c
Implement LICM/sink_multiple.ll, by sinking all possible instructions in the
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loop before hoisting any.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10534 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-19 07:22:45 +00:00
Chris Lattner
60921c9aa1
Factor code out into the Utils library
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10530 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-19 05:58:40 +00:00
John Criswell
47df12d80d
Reverted back to previous revision - this was previously merged
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according to the CVS log messages.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10517 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-18 17:19:19 +00:00
John Criswell
d000e1dc2f
Merged in RELEASE_11.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10516 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-18 16:43:17 +00:00
Chris Lattner
ba7df4c482
When we delete instructions from the loop, make sure to remove them from the
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AliasSetTracker as well.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10507 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-18 08:12:32 +00:00
Chris Lattner
9e45d2e0e8
Fix for PR185 & IndVarsSimplify/2003-12-15-Crash.llx
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10473 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-15 17:34:02 +00:00