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Author SHA1 Message Date
Chris Lattner
c5279917bc Combine not (not X) -> X 
llvm-svn: 2493
 2002-05-06 17:03:21 +00:00
Chris Lattner
a067255180 New testcase to make sure not instructions get combined 
llvm-svn: 2492
 2002-05-06 17:00:47 +00:00
Chris Lattner
6ba1c2d113 Instruction Combination can create a ton of trivially dead instructions. Remove 
them with an DIE pass before more expensive optimizations are run.

llvm-svn: 2491
 2002-05-06 16:52:15 +00:00
Chris Lattner
24a94a50d8 Support more cases... 
llvm-svn: 2490
 2002-05-06 16:49:18 +00:00
Chris Lattner
a7c5a80fa8 More tests 
llvm-svn: 2489
 2002-05-06 16:44:53 +00:00
Chris Lattner
f5ca08da87 Add testcase for -(-A) 
llvm-svn: 2488
 2002-05-06 16:19:16 +00:00
Chris Lattner
8898eec72c Change usage of isPointerType to use isa 
llvm-svn: 2487
 2002-05-06 16:15:49 +00:00
Chris Lattner
fd8d5b852c Replace all usages of Type::isPointerType with isa<PointerType> 
llvm-svn: 2486
 2002-05-06 16:15:30 +00:00
Chris Lattner
17ac289374 Implement getPrimitiveSize() 
don't use isPointerType()

llvm-svn: 2485
 2002-05-06 16:14:39 +00:00
Chris Lattner
24ebdf3f74 Add many more instruction combination simplifications 
llvm-svn: 2484
 2002-05-06 16:14:14 +00:00
Chris Lattner
3bab8f6123 * Add getPrimitiveSize method 
* Remove isPointerType, isMethodType, etc... methods.  Use isa<> instead
* Added specialization of isa for pointer types so that DerivedTypes.h doesn't
  have to be #included to use isa<PointerType>(..)

llvm-svn: 2483
 2002-05-06 16:12:53 +00:00
Chris Lattner
a81c619d2b Fix testcase, the 'shift out all bits' doesn't apply to signed types. 
llvm-svn: 2482
 2002-05-06 16:11:31 +00:00
Chris Lattner
07c6629280 Void and Label values cannot be acted on directly so they have zero size 
llvm-svn: 2481
 2002-05-06 15:10:15 +00:00
Chris Lattner
4e94e9328e More testcases I don't want to forget about 
llvm-svn: 2480
 2002-05-06 05:51:26 +00:00
Chris Lattner
c019944886 New testcases so I don't forget about these algebraic simplifications 
llvm-svn: 2479
 2002-05-06 05:43:36 +00:00
Chris Lattner
36af244bcb New testcase so I don't forget about this. 
llvm-svn: 2478
 2002-05-06 05:35:20 +00:00
Chris Lattner
34a909060c Testcase for missed merge opportunity 
llvm-svn: 2477
 2002-05-06 03:11:32 +00:00
Chris Lattner
0ba1f2e45f Run DCE AFTER SCCP and GCSE! 
llvm-svn: 2476
 2002-05-06 03:04:17 +00:00
Chris Lattner
bc54decdc7 Build CFGsimplify directory 
llvm-svn: 2475
 2002-05-06 03:03:55 +00:00
Chris Lattner
c0699e7040 Updated documentation a _LOT_ 
llvm-svn: 2474
 2002-05-06 03:03:22 +00:00
Chris Lattner
728a84e0f7 Remove dead code 
llvm-svn: 2473
 2002-05-06 03:03:09 +00:00
Chris Lattner
ef7f8fc474 Merge blocks like this: 
void "test3"(bool %T) {
        br bool %T, label %BB1, label %BB1
BB1:
        ret void
}

llvm-svn: 2472
 2002-05-06 03:02:02 +00:00
Chris Lattner
d12eac0b1b Implement constant propogation of shift instructions 
llvm-svn: 2471
 2002-05-06 03:01:37 +00:00
Chris Lattner
5b5663b806 Implement constant propogation of shifts 
llvm-svn: 2470
 2002-05-06 03:00:54 +00:00
Chris Lattner
dfb7d63b15 Print functions with curly braces instead of begin/end 
llvm-svn: 2469
 2002-05-06 03:00:40 +00:00
Chris Lattner
2d5135d9bd Add a range remove method 
llvm-svn: 2468
 2002-05-06 02:59:52 +00:00
Chris Lattner
1d4e297a65 Implement two iterator remove method 
llvm-svn: 2467
 2002-05-06 02:59:34 +00:00
Chris Lattner
3b5ee47ef6 Initial testcases for CFG simplify (which is part of DCE for now) 
llvm-svn: 2466
 2002-05-06 02:37:38 +00:00
Chris Lattner
4362f06ccf Test moved to SCCP test directory 
llvm-svn: 2465
 2002-05-06 00:52:06 +00:00
Chris Lattner
7c3c3eefcc Implement remainder 
Fix implementation of Not

llvm-svn: 2464
 2002-05-03 21:41:07 +00:00
Chris Lattner
a0965456d0 Implement remainder 
llvm-svn: 2463
 2002-05-03 21:40:37 +00:00
Chris Lattner
578cb6582b New testcase for bugs in the constant propogator 
llvm-svn: 2462
 2002-05-03 20:25:40 +00:00
Chris Lattner
bc361e36af Add tests for floating point remainder elimination 
llvm-svn: 2461
 2002-05-03 20:16:29 +00:00
Chris Lattner
36afb8ee65 New testcase to see if constant propogation of remainder is implemented 
llvm-svn: 2460
 2002-05-03 20:14:21 +00:00
Chris Lattner
e7533432aa This testcase is a sanity check 
llvm-svn: 2459
 2002-05-03 20:12:31 +00:00
Chris Lattner
0c91866478 Fix bug: test/Regression/Transforms/SCCP/2002-05-03-NotOperator.ll 
by using the ~ operator instead of !

llvm-svn: 2458
 2002-05-03 20:09:52 +00:00
Chris Lattner
6635b10155 Add new testcase for general constant prop. 
llvm-svn: 2457
 2002-05-03 19:58:17 +00:00
Chris Lattner
3acc1de80e Add const prop pass to eliminate dead branches 
llvm-svn: 2456
 2002-05-03 19:57:16 +00:00
Chris Lattner
beb2a36b9e Implement the NOT operator. 
llvm-svn: 2455
 2002-05-03 19:52:30 +00:00
Chris Lattner
ecd7d90e2c We currently don't allow unresolved opaque types! 
llvm-svn: 2453
 2002-05-03 18:32:40 +00:00
Chris Lattner
09a356bd6a Add -d switch to test AsmWriter as well 
llvm-svn: 2452
 2002-05-03 18:31:30 +00:00
Chris Lattner
5369a645e6 Allow open/closing curly braces instead of begin/end to define the body of a function 
llvm-svn: 2451
 2002-05-03 18:23:48 +00:00
Chris Lattner
0faae7983c Eliminate usage of function level constant pool 
llvm-svn: 2450
 2002-05-02 21:52:35 +00:00
Chris Lattner
432dc486c2 Use unified diffs with gnu diff instead of old diffs 
llvm-svn: 2449
 2002-05-02 21:51:55 +00:00
Chris Lattner
9606fd4830 Ok, really it only takes me 3 times to get this right! 
Now use #if 0 instead of #ifdef 0

llvm-svn: 2448
 2002-05-02 21:49:50 +00:00
Chris Lattner
de442f70ac Oops, disable debugging code all the way. :) 
llvm-svn: 2447
 2002-05-02 21:47:40 +00:00
Chris Lattner
7d4f3ed1f2 * Finish the implementation of isEdgeFeasible this fixes bug: 
test/Regression/Transforms/SCCP/2002-05-02-EdgeFailure.ll
* SCCP now preserves the CFG:  It leaves conditional branches the way they
  are in the program, not simplifying them.  A seperate pass should eliminate
  the potentially dead basic blocks and edges in the CFG.

llvm-svn: 2446
 2002-05-02 21:44:00 +00:00
Chris Lattner
b30088a50d * Enable SCCP debugging to be turned on with a simple change of #define 
* Change worklist to a set so that duplicates cannot happen
* Add support for the invoke instruction
* Avoid marking store and free instructions as overdefined, since they
  cannot produce a value anyway.
* Inline the OperandChangedState implementation
* Add isEdgeFeasible in preparation to fix a bug.  Right now it behaves
  exactly as before.
* Remove obsolete comment about constant pools

llvm-svn: 2445
 2002-05-02 21:18:01 +00:00
Chris Lattner
4ffce19c71 More testcases for SCCP 
llvm-svn: 2444
 2002-05-02 20:41:39 +00:00
Chris Lattner
28a8acc476 * Simplify the code by not bothering to name the folded constant 
* Do not skip the instruction immediately after a folded instruction.  This
  was causing the testcase failure:
	test/Regression/Transforms/SCCP/2002-05-02-MissSecondInst.ll

llvm-svn: 2443
 2002-05-02 20:32:51 +00:00