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3602 Commits

Author SHA1 Message Date
Chris Lattner
a0bc7fc7bd Fix PR1735 and Transforms/DeadArgElim/2007-10-18-VarargsReturn.ll by 
fixing some obviously broken code :(


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43141 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-10-18 18:49:29 +00:00
Owen Anderson
7b714321df Move Split<...>() into DomTreeBase. This should make the #include's of DominatorInternals.h 
in CodeExtractor and LoopSimplify unnecessary.

Hartmut, could you confirm that this fixes the issues you were seeing?


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43115 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-10-18 05:13:52 +00:00
Evan Cheng
afa222c895 Reverting r43070 for now. It's causing llc test failures. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43103 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-10-17 23:51:13 +00:00
Devang Patel
84458323a2 Do not raise free() call that is called through invoke instruction. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43083 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-10-17 20:12:58 +00:00
Hartmut Kaiser
469b7a4ec1 Fixed linker errors (unresolved externals: split<>(...)) when compiling with VC++. Please review. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43081 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-10-17 18:37:09 +00:00
Devang Patel
afc407ea51 Apply "Instead of loading small c string constant, use integer constant directly" transformation while processing load instruction. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43070 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-10-17 07:24:40 +00:00
Devang Patel
16a04f3f20 Use immediate stores. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43055 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-10-16 23:44:18 +00:00
Devang Patel
b9e981304b Achieve same result but use fewer lines of code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42985 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-10-15 15:31:35 +00:00
Devang Patel
7b9e1d251f Dest type is always i8 *. This allows some simplification. 
Do not filter memmove.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42930 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-10-12 20:10:21 +00:00
Chris Lattner
a79dd432b3 Fix a bug in my patch last night that broke InstCombine/2007-10-12-Crash.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42920 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-10-12 18:05:47 +00:00
Gabor Greif
f3cdf3e3ec eliminate warning 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42892 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-10-12 07:44:54 +00:00
Chris Lattner
6a94de2990 Fix some 80 column violations. 
Fix DecomposeSimpleLinearExpr to handle simple constants better.
Don't nuke gep(bitcast(allocation)) if the bitcast(allocation) will
fold the allocation.  This fixes PR1728 and Instcombine/malloc3.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42891 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-10-12 05:30:59 +00:00
Devang Patel
f9193de25b Lower memcpy if it makes sense. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42864 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-10-11 17:21:57 +00:00
Devang Patel
b593898e11 Do not walk invalid iterator. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42812 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-10-09 21:31:36 +00:00
Devang Patel
5c4cd0d82e Fix bug in updating dominance frontier after loop 
unswitch when frontier includes basic blocks that 
are not inside loop.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42654 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-10-05 22:29:34 +00:00
Devang Patel
c1e2660c5d Fix 80 col violation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42591 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-10-03 21:17:43 +00:00
Devang Patel
f476e8e7ce Refactor code in a separate method. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42590 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-10-03 21:16:08 +00:00
Dan Gohman
cb406c2597 Use empty() member functions when that's what's being tested for instead 
of comparing begin() and end().


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42585 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-10-03 19:26:29 +00:00
Dale Johannesen
5a2174febf Tone down an overzealous optimization. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42582 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-10-03 17:45:27 +00:00
Tanya Lattner
088b5913ef Fix PR1719, by not marking llvm.global.annotations internal. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42578 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-10-03 17:05:40 +00:00
Chris Lattner
bd14f58b76 Fix PR1719, by not marking llvm.noinline internal. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42565 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-10-03 03:59:15 +00:00
Dale Johannesen
a7ac2bd407 Fix stride computations for long double arrays. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42508 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-10-01 23:08:35 +00:00
Devang Patel
bc2265abe1 Relax unsafe use check. If there is one unconditional use inside the loop then it is safe to promote value even if there is another conditional use inside the loop. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42493 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-10-01 18:12:58 +00:00
Dale Johannesen
4292d1c02a minor long double related changes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42439 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-28 18:06:58 +00:00
Dale Johannesen
ef0ab932ef Don't do SRA for unions with long double fields. 
Fixes a SWB crash.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42422 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-28 00:21:38 +00:00
Devang Patel
a6dff2faeb Handle multiple induction variables. 
This fixes PR714.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42309 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-25 18:24:48 +00:00
Devang Patel
798b4afd48 Do not reserve DOM check for GetElementPtrInst. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42306 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-25 17:55:50 +00:00
Devang Patel
1c01350f0f doh.. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42300 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-25 17:43:08 +00:00
Devang Patel
453a844128 Add transformation to update loop interation space. Now, 
for (i=A; i<N; i++) {
  if (i < X && i > Y)
    do_something();
}

is transformed into

U=min(N,X); L=max(A,Y);
for (i=L;i<U;i++)
  do_somethihg();                            



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42299 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-25 17:31:19 +00:00
Devang Patel
128459b85b Do not promote null values because it may be unsafe to do so. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42270 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-24 20:02:42 +00:00
Dan Gohman
746767b097 explicit keywords. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42262 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-24 15:48:49 +00:00
Devang Patel
3f65f02d25 Fix PR1692 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42209 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-21 21:18:19 +00:00
Owen Anderson
ce4d88aa64 Add partial caching of non-local memory dependence queries. This provides a modest 
speedup for GVN.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42185 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-21 03:53:52 +00:00
Devang Patel
9ee49c541b Update aux. info associated with an instruction before erasing instruction. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42180 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-20 23:45:50 +00:00
Devang Patel
d15dd8c525 Don't increment invalid iterator. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42178 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-20 23:01:50 +00:00
Nick Lewycky
e29578afd5 Fix optimization. %x = sub %x, %y does not imply that %y is zero. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42157 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-20 00:48:36 +00:00
Devang Patel
f2038b1d93 Avoid unsafe promotion. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42149 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-19 20:18:51 +00:00
Duncan Sands
46318cdfd0 Improve comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42132 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-19 10:25:38 +00:00
Duncan Sands
892c7e4a23 A global variable with external weak linkage can be null, while 
an alias could alias such a global variable.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42130 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-19 10:10:31 +00:00
Devang Patel
babbe27007 Relax loop ExitCondition predicate restriction. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42122 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-19 00:28:47 +00:00
Devang Patel
968eee2aa7 Filter loops where split condition's false branch is not empty. For example 
for (int i = 0; i < N; ++i) {
  if (i == somevalue)
    dosomething();
   else
    dosomethingelse();
}


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42121 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-19 00:15:16 +00:00
Devang Patel
84ef08bfee Bail out early, before modifying anything. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42120 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-19 00:11:01 +00:00
Devang Patel
4e062e520a Work is incomplete. Loop is not modified at all right now. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42119 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-19 00:08:13 +00:00
Devang Patel
e3bfb88898 Fix PR1657 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42075 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-18 01:54:42 +00:00
Devang Patel
8893ca6dab Do not eliminate loop when it is invalid to do so. For example, 
for(int i = 0; i < N; i++) {
	if ( i == XYZ) {
		A;
	else
		B;
	}
	C;
	D;
}



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42058 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-17 21:01:05 +00:00
Devang Patel
5279d064bc Skeleton for transformations to truncate loop's iteration space. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42054 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-17 20:39:48 +00:00
Devang Patel
161660e6d2 Fix comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42048 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-17 20:07:40 +00:00
Chris Lattner
76c1b97e40 Merge DenseMapKeyInfo & DenseMapValueInfo into DenseMapInfo 
Add a new DenseMapInfo::isEqual method to allow clients to redefine
the equality predicate used when probing the hash table.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42042 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-17 18:34:04 +00:00
Dan Gohman
5d066ff7f0 Instcombine x-((x/y)*y) into a remainder operator. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42035 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-17 17:31:57 +00:00
Duncan Sands
cdb6d929d0 Factor the trampoline transformation into a subroutine. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42021 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-17 10:26:40 +00:00