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455e176ffb
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3527 Commits

Author SHA1 Message Date
Nick Lewycky
455e176ffb Use isTrueWhenEqual. Thanks Chris! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41741 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-06 02:40:25 +00:00
Nick Lewycky
5a5ff9d7df When the two operands of an icmp are equal, there are five possible predicates 
that would make the icmp true. Fixes PR1637.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41740 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-06 01:10:22 +00:00
Chuck Rose III
c331d305a0 Forgot to obey 80 column rule. Fixing that. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41725 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-05 20:36:41 +00:00
Chuck Rose III
d4af306aec Added default parameters to GetElementPtrInstr constructor call. Visual Studio 2k5 was getting confused and was unable to compile it. Suspected compiler error. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41721 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-05 16:54:38 +00:00
Devang Patel
d24e5992e9 Insert cloned loop basic blocks before original loop header. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41713 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-04 20:46:35 +00:00
David Greene
b8f74793b9 Update GEP constructors to use an iterator interface to fix 
GLIBCXX_DEBUG issues.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41697 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-04 15:46:09 +00:00
Anton Korobeynikov
406452dce3 Silence warning while compiling with gcc 4.2 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41676 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-02 22:11:14 +00:00
Evan Cheng
4e9c473c4d Fix a gcroot lowering bug. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41668 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-01 02:00:51 +00:00
Chris Lattner
92103de8ce Cut off crazy computation. This helps PR1622 slightly. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41522 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-28 04:23:55 +00:00
Devang Patel
1cd39a4f6e Use simpler test to filter loops. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41516 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-27 21:34:31 +00:00
David Greene
f1355a55f8 Update InvokeInst to work like CallInst 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41506 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-27 19:04:21 +00:00
Dan Gohman
e3784951af Change comments to refer to @malloc and @free instead of %malloc and %free. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41488 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-27 16:11:48 +00:00
Anton Korobeynikov
9f528e6280 Don't promote volatile loads/stores. This is needed (for example) to handle setjmp/longjmp properly. 
This fixes PR1520.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41461 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-26 21:43:30 +00:00
Owen Anderson
5dfcf4318a Don't DSe volatile stores. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41456 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-26 21:14:47 +00:00
Devang Patel
d79faee69a Move exit condition and exit branch from exiting block into loop header and dominator info. This avoid execution of dead iteration. Loop is already filter in the beginning such that this change is safe. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41394 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-25 02:39:24 +00:00
Devang Patel
be97c986e1 Constant split values needs upper bound and lower bound check, just like any other split value. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41389 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-25 01:09:14 +00:00
Devang Patel
4a69da9cb0 While calculating upper loop bound for first loop and lower loop bound for second loop, take care of edge cases. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41387 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-25 00:56:38 +00:00
Devang Patel
7097e9a710 Fix regression that I caused yesterday night while adding logic to select appropriate split condition branch. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41365 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-24 19:32:26 +00:00
Devang Patel
4259fe3281 It is not safe to execute split condition's true branch first all the time. If split 
condition predicate is GT or GE then execute false branch first.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41358 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-24 06:17:19 +00:00
Devang Patel
c830aee8e8 Reject ICMP_NE as index split condition. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41357 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-24 06:02:25 +00:00
Devang Patel
b88e4200cf Tightenup loop filter. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41356 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-24 05:36:56 +00:00
Devang Patel
7237d1167a Remove incomplete cost analysis. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41354 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-24 05:21:13 +00:00
Chris Lattner
9132a2b818 rename APInt::toString -> toStringUnsigned for symmetry with toStringSigned() 
Add an APSInt::toString() method.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41309 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-23 05:15:32 +00:00
Devang Patel
40fc353a0d Remove dead code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41295 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-22 21:07:41 +00:00
Devang Patel
a24d918063 Fix typo. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41292 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-22 20:55:18 +00:00
Devang Patel
a8644e306d Cosmetic change 
"True Loop" and "False Loop" naming terminology to refer two loops
after loop cloning is confusing. Instead just use A_Loop and B_Loop.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41287 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-22 19:33:29 +00:00
Devang Patel
dc52395353 Refactor loop condition check in a separate function. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41282 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-22 18:27:01 +00:00
Devang Patel
ea0fa97334 Fix thinko. 
Starting value of second loop's induction variable can not be lower 
then starting value of original loop's induction variable.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41280 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-22 18:07:47 +00:00
Devang Patel
0b8e02b704 Rename bunch of variables. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41250 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-21 21:12:02 +00:00
Devang Patel
60cbab4252 Preserve LCSSA. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41246 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-21 19:47:46 +00:00
Devang Patel
b7211a2ce1 Use SmallVector instead of std::vector. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41207 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-21 00:31:24 +00:00
Devang Patel
1cc2ec8d20 s/ExitBlock/ExitingBlock/g 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41204 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-20 23:51:18 +00:00
Devang Patel
ebc5fea695 Replace indunction variable with split value in loop body. 
This fixes art miscompile.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41195 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-20 20:49:01 +00:00
Devang Patel
d651f657f2 Do not split loops rejected by processOneIterationLoop(). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41194 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-20 20:24:15 +00:00
Nick Lewycky
6694e31c49 Oops, remove assert that wasn't meant to be committed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41170 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-18 23:21:28 +00:00
Nick Lewycky
c721223f73 Never insert duplicate edges. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41169 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-18 23:18:03 +00:00
Nick Lewycky
af5cbc82bb Typo. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41168 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-18 15:08:56 +00:00
Devang Patel
20d260a193 Avoid spliting loops where two split condition branches are not independent. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41148 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-18 00:00:32 +00:00
Devang Patel
96bf524b53 When one branch of condition is eliminated then head of the other 
branch is not necessary immediate dominators of merge blcok in all cases.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41144 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-17 21:59:16 +00:00
Owen Anderson
1defe2df5d Factor out some code into a helper function. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41131 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-16 22:51:56 +00:00
Owen Anderson
62bc33c954 Add some more comments to GVN. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41129 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-16 22:02:55 +00:00
Devang Patel
7375bb9c8c Dominance frontier is now required. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41096 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-15 03:34:53 +00:00
Devang Patel
5b8ec614f5 Cleanup removeBlocks. 
Use dominance frontier to fixup incoming edges of successor blocks not domianted by DeadBB.
Use df_iterator to walk and delete basic blocks dominated by DeadBB.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41095 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-15 03:31:47 +00:00
Reid Spencer
e9dd95ad9c Remove unneeded header file. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41094 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-15 03:01:04 +00:00
Devang Patel
3fe4f2135a Avoid triangle loops. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41093 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-15 02:14:55 +00:00
Devang Patel
4f5d78e9c1 Break infinite loop. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41091 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-14 23:59:17 +00:00
Devang Patel
4e8061cbda Avoid nested loops at the moment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41090 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-14 23:53:57 +00:00
Devang Patel
a6a8663894 Fix dominance frontier update while removing blocks. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41082 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-14 18:35:57 +00:00
Owen Anderson
31f496755a Eliminate PHI nodes with constant values during normal GVN processing, even when 
they're not related to eliminating a load.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41081 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-14 18:33:27 +00:00
Owen Anderson
36057c7834 Be more aggressive in pruning unnecessary PHI nodes when doing PHI construction. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41080 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-14 18:16:29 +00:00