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Commit Graph

870 Commits

Author SHA1 Message Date
Brian Gaeke
4651096037 Factory methods for function passes now return type FunctionPass *.
llvm-svn: 7839
2003-08-14 06:09:32 +00:00
Chris Lattner
cd72043c89 Fix FIXME by removing FIXME
llvm-svn: 7832
2003-08-13 22:15:04 +00:00
Chris Lattner
2b7babcc41 Implement instcombine optimizations:
(A <setcc1> B) logicalop (A <setcc2> B)  -> (A <setcc3> B) or true or false

Where setcc[123] is one of the 6 setcc instructions, and logicalop is one of: And, Or, Xor

llvm-svn: 7828
2003-08-13 20:16:26 +00:00
Chris Lattner
7ba3220999 Generalize some of the add tests to allow for reassociation to take place
llvm-svn: 7825
2003-08-13 19:01:45 +00:00
Brian Gaeke
77c65be59e Factory methods for FunctionPasses now return type FunctionPass *.
llvm-svn: 7823
2003-08-13 18:18:15 +00:00
Chris Lattner
4e543f7021 Assign arguments different ranks so they get grouped together
llvm-svn: 7813
2003-08-13 16:16:26 +00:00
John Criswell
64631c7abe Removing the pool allocator from the main CVS tree.
Use the poolalloc module in CVS from now on.

llvm-svn: 7810
2003-08-13 15:36:15 +00:00
Chris Lattner
374473c778 Implement InstCombine/2003-08-12-AllocaNonNull.ll
llvm-svn: 7807
2003-08-13 05:38:46 +00:00
Chris Lattner
f8fbdb5ded Do not cannonicalize (X != 0) into (cast X to bool)
llvm-svn: 7806
2003-08-13 05:33:12 +00:00
Chris Lattner
5c9ccccd96 Change cannonicalization rules: add X,X is represented as multiplies, multiplies
of a power of two are represented as a shift.

llvm-svn: 7803
2003-08-13 04:18:28 +00:00
Brian Gaeke
9aa6b2db94 Give std::map<BasicBlock *, BasicBlock *> the short name BBMap, because
it's used 7 different times.
Rename `getBackEdges' to `findAndInstrumentBackEdges', for clarity.
Remove some excess whitespace and commented-out code.
Use shorter forms of CallInst ctors.
Do not make `reopt_threshold' visible to the LLVM program, and do not
 pass it to the call to `reoptimizerInitialize'.  Don't pass the
 GlobalVariable representing it to any of our helper methods.
 `reopt_threshold' is an internal parameter of the reoptimizer, which
 InstLoops does not need to know about.

llvm-svn: 7794
2003-08-12 22:00:24 +00:00
Chris Lattner
3e52e8ce5a Allow pulling logical operations through shifts.
This implements InstCombine/shift.ll:test14*

llvm-svn: 7793
2003-08-12 21:53:41 +00:00
Chris Lattner
7105c4aad0 Fix bug: Reassociate/2003-08-12-InfiniteLoop.ll
llvm-svn: 7792
2003-08-12 21:45:24 +00:00
Chris Lattner
c8d2398084 Assign finer grained ranks, make sure to reassociate top-level after reassociating bottom level
llvm-svn: 7787
2003-08-12 20:14:27 +00:00
Chris Lattner
2e2432d69e Simplify code
llvm-svn: 7783
2003-08-12 19:17:27 +00:00
Chris Lattner
c9c1d9f778 Implement testcases InstCombine/or.ll:test16/test17
llvm-svn: 7782
2003-08-12 19:11:07 +00:00
Sumant Kowshik
b3e21bb00f Bug fix: Some nodes pointed to by globals may not be marked incomplete and need to be tracked to find pool arguments
llvm-svn: 7763
2003-08-12 00:45:13 +00:00
Chris Lattner
623bd2eb83 Fix handling of 'free' if it has absolutely no prototype
llvm-svn: 7721
2003-08-11 15:05:08 +00:00
John Criswell
e5d4f11e14 Fixed a segfault in gccld.
The original code does not work because the value from WorkList.end() is
invalidated once WorkList.erase() is called.  To ensure proper functionality,
we must ensure that WorkList.erase() is always called before WorkList.end().

llvm-svn: 7673
2003-08-07 14:43:13 +00:00
Sumant Kowshik
095e7c3052 Added code for pool allocating only the pool-allocatable data structures in the presence of collapsed nodes + a couple of bug fixes
llvm-svn: 7662
2003-08-07 05:29:28 +00:00
Chris Lattner
c25494f95e Remove unnecessary use of NonCopyable
llvm-svn: 7641
2003-08-06 17:16:24 +00:00
Tanya Lattner
6fbe85279f Fixed minor bug in SafeToHoist and made some changes suggested by Chris.
llvm-svn: 7614
2003-08-05 20:39:02 +00:00
Tanya Lattner
48745a598c Fixed LICM bug that hoists trapping instructions that are not guaranteed to execute.
llvm-svn: 7612
2003-08-05 18:45:46 +00:00
Chris Lattner
629c78afe3 Minor changes:
* Expand most tabs into spaces
  * Move #define DEBUG_TYPE to top of file to avoid warning

llvm-svn: 7611
2003-08-05 18:44:12 +00:00
Sumant Kowshik
18c49a775f Major bug fixes including a memory leak and tracking some exceptional conditions. Also added support for including global and indirect call information in the DS graphs used by the pool allocation
llvm-svn: 7605
2003-08-05 17:01:54 +00:00
Chris Lattner
488b0e52a8 Fix bug: SimplifyCFG/2003-08-05-InvokeCrash.ll
Fix bug: SimplifyCFG/2003-08-05-MishandleInvoke.ll

llvm-svn: 7599
2003-08-05 16:27:44 +00:00
Chris Lattner
686e94e760 DEBUG got moved to Support/Debug.h
llvm-svn: 7492
2003-08-01 22:15:03 +00:00
Chris Lattner
c5b0f39c96 Instcombine: (A >> c1) << c2 for signed integers
llvm-svn: 7295
2003-07-24 18:38:56 +00:00
Chris Lattner
bf9589bf1f Reorganization of code, no functional changes.
Now it shoudl be a bit more efficient

llvm-svn: 7292
2003-07-24 17:52:58 +00:00
Chris Lattner
785e8453f0 Allow folding several instructions into casts, which can simplify a lot
of codes.  For example,
short kernel (short t1) {
  t1 >>= 8; t1 <<= 8;
  return t1;
}

became:

short %kernel(short %t1.1) {
        %tmp.3 = shr short %t1.1, ubyte 8               ; <short> [#uses=1]
        %tmp.5 = cast short %tmp.3 to int               ; <int> [#uses=1]
        %tmp.7 = shl int %tmp.5, ubyte 8                ; <int> [#uses=1]
        %tmp.8 = cast int %tmp.7 to short               ; <short> [#uses=1]
        ret short %tmp.8
}

before, now it becomes:
short %kernel(short %t1.1) {
        %tmp.3 = shr short %t1.1, ubyte 8               ; <short> [#uses=1]
        %tmp.8 = shl short %tmp.3, ubyte 8              ; <short> [#uses=1]
        ret short %tmp.8
}

which will become:
short %kernel(short %t1.1) {
        %tmp.3 = and short %t1.1, 0xFF00
        ret short %tmp.3
}

This implements cast-set.ll:test4 and test5

llvm-svn: 7290
2003-07-24 17:35:25 +00:00
Chris Lattner
9eb9ec67f7 Minor cleanups
llvm-svn: 7289
2003-07-24 17:31:56 +00:00
Chris Lattner
31224cdff9 Fix bug: FunctionResolve/2003-07-23-CPR-Reference.ll
This fixes a long time annoyance which caused prototypes for bzero, bcopy,
bcmp, fputs, and fputs_unlocked to never get deleted.  Grr.

llvm-svn: 7285
2003-07-23 22:03:18 +00:00
Chris Lattner
6d10220481 Add comments
llvm-svn: 7283
2003-07-23 21:41:57 +00:00
Chris Lattner
ac8a2be5e4 Remove explicit check for: not (not X) = X, it is already handled because xor is commutative
- InstCombine: (X & C1) ^ C2 --> (X & C1) | C2 iff (C1&C2) == 0
  - InstCombine: (X | C1) ^ C2 --> (X | C1) & ~C2 iff (C1&C2) == C2

llvm-svn: 7282
2003-07-23 21:37:07 +00:00
Chris Lattner
f453a39185 InstCombine: (X ^ C1) & C2 --> (X & C2) iff (C1&C2) == 0
llvm-svn: 7272
2003-07-23 19:36:21 +00:00
Chris Lattner
80d9c3a900 - InstCombine: (X | C1) & C2 --> X & C2 iff C1 & C1 == 0
- InstCombine: (X | C) & C --> C
  - InstCombine: (X | C1) & C2 --> (X | (C1&C2)) & C2

llvm-svn: 7269
2003-07-23 19:25:52 +00:00
Chris Lattner
76c1da471c IC: (X & C1) | C2 --> (X | C2) & (C1|C2)
IC: (X ^ C1) | C2 --> (X | C2) ^ (C1&~C2)

We are now guaranteed that all 'or's will be inside of 'and's, and all 'and's
will be inside of 'xor's, if the second operands are constants.

llvm-svn: 7264
2003-07-23 18:29:44 +00:00
Chris Lattner
4b43cd9700 IC: (X ^ C1) & C2 --> (X & C2) ^ (C1&C2)
Minor code cleanup

llvm-svn: 7262
2003-07-23 17:57:01 +00:00
Chris Lattner
ae691a3068 InstCombine: (X ^ 4) == 8 --> X == 12
llvm-svn: 7260
2003-07-23 17:26:36 +00:00
Chris Lattner
b07de65646 IC: (X & 5) == 13 --> false
IC: (X | 8) == 4  --> false

llvm-svn: 7257
2003-07-23 17:02:11 +00:00
Chris Lattner
6ad460b336 Simplify code by using ConstantInt::getRawValue instead of checking to see
whether the constant is signed or unsigned, then casting

llvm-svn: 7252
2003-07-23 15:22:26 +00:00
Chris Lattner
74a266d229 Fix bug: TailDup/2003-07-22-InfiniteLoop.ll
llvm-svn: 7243
2003-07-23 03:32:41 +00:00
Chris Lattner
7594fa7280 - InstCombine (cast (xor A, B) to bool) ==> (setne A, B)
- InstCombine (cast (and X, (1 << size(X)-1)) to bool) ==> x < 0

llvm-svn: 7241
2003-07-22 21:46:59 +00:00
John Criswell
98946bac5b Added code that checks to see if a global variable is external before replacing
a load of the global variable with the variable's constant value.

llvm-svn: 7216
2003-07-21 19:42:57 +00:00
Anand Shukla
d02a20b947 Added check for inlinable function
llvm-svn: 7206
2003-07-18 20:55:26 +00:00
Anand Shukla
bb730173d6 A pass to combine multiple backedges that go to same target
llvm-svn: 7201
2003-07-18 16:08:32 +00:00
John Criswell
dbaf5f719c Dinakar and I fixed a bug where we were trying to get the initializer of
an external constant.  Since external constants don't have initializers, we
were failing on an assert() call in llvm/GlobalVariable.h.

llvm-svn: 7193
2003-07-17 19:06:55 +00:00
Vikram S. Adve
f5914c9bca Trace loads and stores as they happen (stores were being
remembered in valuesStoredInFunction, but never traced at function return,
and that's too late to be finding the error anyway).
Stores trace both the value and the address being stored to,
but after some experience I think only values should be traced.
The pointer hash table just fills up far too quickly if every
store address were traced.

llvm-svn: 7169
2003-07-11 21:57:43 +00:00
Anand Shukla
cb78ec5ada Added functionality to instrmentation pass
llvm-svn: 7161
2003-07-10 21:55:57 +00:00
John Criswell
258dfc0319 Merged in autoconf branch. This provides configuration via the autoconf
system.

llvm-svn: 7014
2003-06-30 21:59:07 +00:00