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82e14fe168
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183 Commits

Author SHA1 Message Date
Chris Lattner
82e14fe168 Implement select.ll:test11 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12793 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-09 18:19:44 +00:00
Chris Lattner
f499eaca36 Implement InstCombine/cast-propagate.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12784 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-08 20:39:49 +00:00
Chris Lattner
0c199a7628 Implement InstCombine/select.ll:test[7-10] 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12769 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-08 04:43:23 +00:00
Chris Lattner
cb69a4ed64 Implement test/Regression/Transforms/InstCombine/getelementptr_index.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12762 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-07 18:38:20 +00:00
Chris Lattner
548f47efb0 Fix a bug in yesterdays checkins which broke siod. siod is a great testcase! :) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12659 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-05 16:02:41 +00:00
Chris Lattner
15a76c0b35 Fix InstCombine/2004-04-04-InstCombineReplaceAllUsesWith.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12658 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-05 02:10:19 +00:00
Chris Lattner
28977af72a Support getelementptr instructions which use uint's to index into structure 
types and can have arbitrary 32- and 64-bit integer types indexing into
sequential types.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12653 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-05 01:30:19 +00:00
Chris Lattner
c32b30a429 Implement select.ll:test[3-6] 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12544 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-30 19:37:13 +00:00
Chris Lattner
4df1b8aa26 X % -1 == X % 1 == 0 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12520 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-26 16:11:24 +00:00
Chris Lattner
ebd985cb87 Two changes: 
#1 is to unconditionally strip constantpointerrefs out of
instruction operands where they are absolutely pointless and inhibit
optimization.  GRRR!

#2 is to implement InstCombine/getelementptr_const.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12519 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-25 22:59:29 +00:00
Chris Lattner
7c881dffc9 Teach the optimizer to delete zero sized alloca's (but not mallocs!) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12507 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-19 06:08:10 +00:00
Chris Lattner
0cea42a560 Add some debugging output 
Fix InstCombine/2004-03-13-InstCombineInfLoop.ll which caused an infinite
loop compiling (I think) povray.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12365 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-13 23:54:27 +00:00
Chris Lattner
bfe492b5c2 Implement sub.ll:test14 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12355 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-13 00:11:49 +00:00
Chris Lattner
9c2906744a Implement InstCombine/sub.ll:test12 & test13 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12353 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-12 23:53:13 +00:00
Chris Lattner
3d69f46d64 Add trivial optimizations for select instructions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12317 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-12 05:52:32 +00:00
Chris Lattner
7bcc0e7fff Rename AddUsesToWorkList -> AddUsersToWorkList, as that is what it does. 
Create a new AddUsesToWorkList method
optimize memmove/set/cpy of zero bytes to a noop.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11941 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-28 05:22:00 +00:00
Chris Lattner
6160e85201 Turn 'free null' into nothing 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11940 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-28 04:57:37 +00:00
Chris Lattner
a0ebcebc06 Implement test/Regression/Transforms/InstCombine/canonicalize_branch.ll 
This is a really minor thing, but might help out the 'switch statement induction'
code in simplifycfg.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11900 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-27 06:27:46 +00:00
Chris Lattner
d38f208cd9 Fix a faulty optimization on FP values 
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 
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 :( 
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 
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 
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 
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 
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 
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 
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 
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 
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: 
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 
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 
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
aeb2a1d708 rename the "exceptional" destination of an invoke instruction to the 'unwind' dest 
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
0517e72096 Disable (x - (y - z)) => (x + (z - y)) optimization for floating point. 
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
f78616b339 Fix InstCombine/2004-01-13-InstCombineInvokePHI.ll, which also fixes lots 
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 
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 
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
5f16a13896 Do not hack on volatile loads. I'm not sure what the point of a volatile load 
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
60921c9aa1 Factor code out into the Utils library 
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
Chris Lattner
67b1e1b89f * Finegrainify namespacification 
* Transform: free <ty>* (cast <ty2>* X to <ty>*) into free <ty2>* X


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10303 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-07 01:24:23 +00:00
Chris Lattner
917e804253 Implement feature: InstCombine/2003-11-13-ConstExprCastCall.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9981 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-13 19:17:02 +00:00
Brian Gaeke
d0fde30ce8 Put all LLVM code into the llvm namespace, as per bug 109. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9903 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-11 22:41:34 +00:00
Chris Lattner
1bcc70d240 Fix flawed logic that was breaking several SPEC benchmarks, including gzip and crafty. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9731 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-05 17:31:36 +00:00
Chris Lattner
d65460f133 Fix bug with previous implementation: 
-      // ~(c-X) == X-(c-1) == X+(-c+1)
+      // ~(c-X) == X-c-1 == X+(-c-1)

Implement: C - ~X == X + (1+C)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9715 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-05 01:06:05 +00:00
Chris Lattner
ad5b4fb6b7 Minor cleanup, plus implement InstCombine/xor.ll:test17 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9711 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-04 23:50:51 +00:00
Chris Lattner
689d24b6ed Implement InstCombine/xor.ll:test(15|16) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9708 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-04 23:37:10 +00:00
Chris Lattner
6870805117 Implement InstCombine/cast-set.ll:test6[a]. This improves code generated for 
a hot function in em3d


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9673 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-03 05:17:03 +00:00
Chris Lattner
de90b76670 Implement InstCombine/cast-set.ll: test1, test2, test7 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9670 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-03 04:25:02 +00:00
Chris Lattner
8ee9204309 Fix bug with zero sized casts 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9667 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-03 01:29:41 +00:00
Chris Lattner
fc07a3473a Fix bug in previous checkin 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9656 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-02 06:54:48 +00:00