Chris Lattner
ea2294a498
Implement: FunctionResolve/2003-04-18-ForwardDeclGlobal.ll
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5816 91177308-0d34-0410-b5e6-96231b3b80d8
2003-04-19 00:15:27 +00:00
Chris Lattner
393689afa9
Fix bug: Mem2reg/2003-04-18-DeadBlockProblem.ll
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5810 91177308-0d34-0410-b5e6-96231b3b80d8
2003-04-18 19:25:22 +00:00
Chris Lattner
156bcf3f65
Global constants CAN be external
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5808 91177308-0d34-0410-b5e6-96231b3b80d8
2003-04-18 04:34:29 +00:00
Chris Lattner
17d145d26f
Refactor CloneFunction to expose the new CloneBasicBlock function
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5806 91177308-0d34-0410-b5e6-96231b3b80d8
2003-04-18 03:50:09 +00:00
Chris Lattner
15faa8498c
New const_cast instead of c style cast
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5805 91177308-0d34-0410-b5e6-96231b3b80d8
2003-04-18 03:49:49 +00:00
Chris Lattner
fb242b6edc
Change the interface to constant expressions to allow automatic folding
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5793 91177308-0d34-0410-b5e6-96231b3b80d8
2003-04-16 22:40:51 +00:00
Chris Lattner
4ad02e726d
Add new linkage types to support a real frontend
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5786 91177308-0d34-0410-b5e6-96231b3b80d8
2003-04-16 20:28:45 +00:00
Chris Lattner
af7ccd9bba
Make help message more clear
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5775 91177308-0d34-0410-b5e6-96231b3b80d8
2003-04-13 03:50:14 +00:00
Chris Lattner
d4bd3eba5d
* Fix bug: Mem2Reg/2003-04-10-DFNotFound.ll
...
* Make Mem2Reg assign version numbers now for renamed variables instead of
.mem2reg suffixes. This produces what people think of as SSA.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5771 91177308-0d34-0410-b5e6-96231b3b80d8
2003-04-10 19:41:13 +00:00
Chris Lattner
e941291a7a
Initial checkin of PRE on LLVM. This implementation is still lacking in
...
several ways:
* Load expressions are not PRE'd well. Alias Analysis should be used to
get accurate information when computing anticipatibility.
* The expression collection implementation does not handle PHI nodes properly,
thus the implementation misses many opportunities to PRE.
* This code could be sped up quite a bit
Despite these flaws, the code seems to work well, and handles PR's as one
would expect.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5759 91177308-0d34-0410-b5e6-96231b3b80d8
2003-03-31 19:55:43 +00:00
Chris Lattner
6c0e0496dc
* We now preserve the no-critical-edge pass (because we cannot insert critical edges)
...
* Small modification to be more efficient
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5757 91177308-0d34-0410-b5e6-96231b3b80d8
2003-03-31 17:30:25 +00:00
Chris Lattner
c277eaa41e
Move BreakCriticalEdges pass to lib/Transforms/Utils
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5754 91177308-0d34-0410-b5e6-96231b3b80d8
2003-03-21 21:43:19 +00:00
Chris Lattner
c8802d2c16
Add the following instcombine xforms:
...
- Implement simple reassociation: (A|c1)|(B|c2) == (A|B)|(c1|c2)
- (A & C1)+(B & C2) -> (A & C1)|(B & C2) iff C1&C2 == 0
- (A & C1)^(B & C2) -> (A & C1)|(B & C2) iff C1&C2 == 0
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5743 91177308-0d34-0410-b5e6-96231b3b80d8
2003-03-11 00:12:48 +00:00
Chris Lattner
a4f445b28c
Implement: -A*-B == A*B
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5740 91177308-0d34-0410-b5e6-96231b3b80d8
2003-03-10 23:23:04 +00:00
Chris Lattner
a27231acc0
Add new transformation: // (~A | ~B) == (~(A & B))
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5738 91177308-0d34-0410-b5e6-96231b3b80d8
2003-03-10 23:13:59 +00:00
Chris Lattner
8d96964e29
Generalize not and neg comparison testers to allow constant to be considered not'able and neg'able. This
...
allows optimization of this:
int %test4(int %A, int %B) {
%a = xor int %A, -1
%c = and int %a, 5 ; 5 = ~c2
%d = xor int %c, -1
ret int %d
}
into this:
int %test4(int %A, int %B) { ; No predecessors!
%c.demorgan = or int %A, -6 ; <int> [#uses=1]
ret int %c.demorgan
}
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5736 91177308-0d34-0410-b5e6-96231b3b80d8
2003-03-10 23:06:50 +00:00
Chris Lattner
4f98c56936
Generalize (A+c1)+c2 optimization to work with all associative operators
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5733 91177308-0d34-0410-b5e6-96231b3b80d8
2003-03-10 21:43:22 +00:00
Chris Lattner
28ba1aad99
Minor change, no functionality diff
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5731 91177308-0d34-0410-b5e6-96231b3b80d8
2003-03-10 19:20:30 +00:00
Chris Lattner
ea34005404
Fix bug: (x << 100) wasn't folded to 0, but (x >> 100) was (when x is unsigned)
...
Implement new shift optimizations for shifting the result of a shift.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5729 91177308-0d34-0410-b5e6-96231b3b80d8
2003-03-10 19:16:08 +00:00
Chris Lattner
cb40a3749a
Implement: (A|B)^B == A & (~B)
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5728 91177308-0d34-0410-b5e6-96231b3b80d8
2003-03-10 18:24:17 +00:00
Chris Lattner
3a43837d85
Fix bug: SimplifyCFG/2003-03-07-DominateProblem.ll
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5722 91177308-0d34-0410-b5e6-96231b3b80d8
2003-03-07 18:13:41 +00:00
Chris Lattner
decd0812ec
Implement %test7 in InstCombine/getelementptr.ll
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5704 91177308-0d34-0410-b5e6-96231b3b80d8
2003-03-05 22:33:14 +00:00
Chris Lattner
46a5f1f6e4
Implement CFGSimplify/PhiBlockMerge*.ll
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5702 91177308-0d34-0410-b5e6-96231b3b80d8
2003-03-05 21:36:33 +00:00
Chris Lattner
e2ca540e7c
Implement testcase CFGSimplify/EqualPHIEdgeBlockMerge.ll
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5699 91177308-0d34-0410-b5e6-96231b3b80d8
2003-03-05 21:01:52 +00:00
Chris Lattner
0252e49f6d
Convert LICM over to use AliasSetTracker. Besides being nicer, this automatically
...
allows LICM to use access sizes to help alias analysis be more precise.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5693 91177308-0d34-0410-b5e6-96231b3b80d8
2003-03-03 23:32:45 +00:00
Chris Lattner
dde601d0eb
Eliminate tons of bogus warnings
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5686 91177308-0d34-0410-b5e6-96231b3b80d8
2003-03-03 19:57:46 +00:00
Chris Lattner
fb743a937f
Change the mem2reg interface to accept a TargetData argument
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5685 91177308-0d34-0410-b5e6-96231b3b80d8
2003-03-03 17:25:18 +00:00
Chris Lattner
caadc93f7b
Fix bug: LICM/2003-02-28-PromoteDifferentType.ll
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5675 91177308-0d34-0410-b5e6-96231b3b80d8
2003-02-28 19:21:40 +00:00
Chris Lattner
6315938d68
Fix bug I introduced yesterday :(
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5669 91177308-0d34-0410-b5e6-96231b3b80d8
2003-02-28 16:54:17 +00:00
Chris Lattner
74cd04ea01
Fix bug: LICM/2003-02-27-PreheaderExitNodeUpdate.ll
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5667 91177308-0d34-0410-b5e6-96231b3b80d8
2003-02-28 03:07:54 +00:00
Chris Lattner
9f879cfb0a
Fix bug: 2003-02-27-PreheaderExitNodeUpdate.ll by updating exit node info
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5664 91177308-0d34-0410-b5e6-96231b3b80d8
2003-02-27 22:48:57 +00:00
Chris Lattner
7e7ad49c23
Add a new assertion to check that stuff is happening right
...
Ironically the exit block modification code wasn't updating the exit block
information itself. Fix this.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5659 91177308-0d34-0410-b5e6-96231b3b80d8
2003-02-27 22:31:07 +00:00
Chris Lattner
8601a9bf54
Fix bug: 2003-02-27-StoreSinkPHIs.ll
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5658 91177308-0d34-0410-b5e6-96231b3b80d8
2003-02-27 21:59:36 +00:00
Chris Lattner
69269ac203
* Don't forget to update Loop information!
...
* Remove bogus assertion: there may be a single outside predecessor and
still need a new loop-preheader if the predecessor has multiple
successors. See bug: LICM/2003-02-27-PreheaderProblem.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5655 91177308-0d34-0410-b5e6-96231b3b80d8
2003-02-27 21:50:19 +00:00
Chris Lattner
4e2fd7574a
Replace assertion with a handler.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5653 91177308-0d34-0410-b5e6-96231b3b80d8
2003-02-27 20:55:48 +00:00
Chris Lattner
dbf3cd7952
* Significant changes to the preheader insertion pass:
...
- Now we perform loop exit-block splitting to ensure exit blocks are
always dominated by the loop header.
- We now preserve dominance frontier information
- This fixes bug: LICM/2003-02-26-LoopExitNotDominated.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5652 91177308-0d34-0410-b5e6-96231b3b80d8
2003-02-27 20:27:08 +00:00
Chris Lattner
2d0a4a4eb8
Convert to work with new AliasAnalysis interface by conservatively assuming all pointers are arbitrarily large accesses
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5636 91177308-0d34-0410-b5e6-96231b3b80d8
2003-02-26 19:28:57 +00:00
Chris Lattner
f0a93ed9c5
Rename Instruction::hasSideEffects() -> mayWriteToMemory()
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5620 91177308-0d34-0410-b5e6-96231b3b80d8
2003-02-24 20:48:32 +00:00
Chris Lattner
2e6e741b73
Initial implementation of Loop invariant memory->scalar promotion
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5613 91177308-0d34-0410-b5e6-96231b3b80d8
2003-02-24 03:52:32 +00:00
Chris Lattner
d99bf49a53
Split mem2reg promotion into two parts: a function which does the work, and
...
a pass which wraps the function. This allows other passes to use the functionality
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5610 91177308-0d34-0410-b5e6-96231b3b80d8
2003-02-22 23:57:48 +00:00
Chris Lattner
cc139de15a
Clean up std namespace references
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5608 91177308-0d34-0410-b5e6-96231b3b80d8
2003-02-22 22:25:17 +00:00
Chris Lattner
ad3448c917
4 new transformations:
...
* X*C + X --> X * (C+1)
* X + X*C --> X * (C+1)
* X - X*C --> X * (1-C)
* X*C - X --> X * (C-1)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5592 91177308-0d34-0410-b5e6-96231b3b80d8
2003-02-18 19:57:07 +00:00
Chris Lattner
a2881961b9
Add a variety of new transformations:
...
* A & ~A == 0
* A / (2^c) == A >> c if unsigned
* 0 / A == 0
* 1.0 * A == A
* A * (2^c) == A << c
* A ^ ~A == -1
* A | ~A == -1
* 0 % X = 0
* A % (2^c) == A & (c-1) if unsigned
* A - (A & B) == A & ~B
* -1 - A == ~A
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5587 91177308-0d34-0410-b5e6-96231b3b80d8
2003-02-18 19:28:33 +00:00
Anand Shukla
92d5e30e76
Changes to runtime framework
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5572 91177308-0d34-0410-b5e6-96231b3b80d8
2003-02-14 20:41:53 +00:00
Chris Lattner
fd595203bd
Fix a bug that cause a crash resolving questionable function calls
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5567 91177308-0d34-0410-b5e6-96231b3b80d8
2003-02-14 19:12:29 +00:00
Chris Lattner
a3183be835
Fix a misunderstanding of the standard associative containers
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5565 91177308-0d34-0410-b5e6-96231b3b80d8
2003-02-14 05:34:36 +00:00
Chris Lattner
6b403233f7
Fix bug: LevelRaise/2003-02-13-CallRaise.ll
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5562 91177308-0d34-0410-b5e6-96231b3b80d8
2003-02-14 03:07:17 +00:00
Chris Lattner
dab73bef89
Revert Anand's patch which broke the build
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5525 91177308-0d34-0410-b5e6-96231b3b80d8
2003-02-10 15:55:50 +00:00
Anand Shukla
f013d3d40b
*** empty log message ***
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5522 91177308-0d34-0410-b5e6-96231b3b80d8
2003-02-09 21:15:36 +00:00
Chris Lattner
617d92c7d9
Fix a problem Sumant was running into
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5499 91177308-0d34-0410-b5e6-96231b3b80d8
2003-02-06 22:03:46 +00:00