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86bbf338e57504cc1e006552d8a1a2d99302e961
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790 Commits

Author SHA1 Message Date
Chris Lattner
86bbf338e5 Split some code out of the main SimplifyCFG loop into its own function. 
Fix said code to handle merging return instructions together correctly
when handling multiple return values.

llvm-svn: 50199
 2008-04-24 00:01:19 +00:00
Devang Patel
8f83081fea Check type instead of no. of operands. 
llvm-svn: 50179
 2008-04-23 20:18:29 +00:00
Chris Lattner
a5b11705b6 Move SplitBlockPredecessors out of loopsimplify into BasicBlockUtils.h 
as a global helper function.  At the same type, switch it from taking
a vector of predecessors to an arbitrary sequential input.  This allows
us to switch LoopSimplify to use a SmallVector for various temporary
vectors that it passed into SplitBlockPredecessors.

llvm-svn: 50020
 2008-04-21 01:28:02 +00:00
Chris Lattner
d418b06abf Move domtree/frontier updating earlier, allowing us to use it to update phi 
nodes, removing a hack.

llvm-svn: 50019
 2008-04-21 01:05:08 +00:00
Chris Lattner
96e9e22269 Factor dominator tree and frontier updating into SplitBlockPredecessors 
instead of doing it after every call.

llvm-svn: 50018
 2008-04-21 00:54:38 +00:00
Chris Lattner
aca912d793 simplify code, fit in 80 cols. 
llvm-svn: 50015
 2008-04-21 00:23:14 +00:00
Chris Lattner
38806c3e9c fit in 80 cols 
llvm-svn: 50014
 2008-04-21 00:19:16 +00:00
Scott Michel
376acf4aaa Remove unused variable 
llvm-svn: 49838
 2008-04-17 01:30:44 +00:00
Scott Michel
f66cb3696a Workaround for PR2207, in which pred_iterator assert gets triggered due to a 
wee problem in Xcode 2.[45]/gcc 4.0.1.

llvm-svn: 49831
 2008-04-16 23:46:39 +00:00
Chuck Rose III
c6a47e8a79 VisualStudio project files updated. #include <algorithm> added to make VisualStudio happy. Also had to undefine setjmp because of #include <csetjmp> turning setjmp into _setjmp in VisualStudio. 
llvm-svn: 49743
 2008-04-15 21:27:11 +00:00
Owen Anderson
7629b71dd4 Revert r49614. As Dan pointed out, some of these aren't correct. 
llvm-svn: 49657
 2008-04-14 17:38:21 +00:00
Owen Anderson
1f6fbc4bc3 Replace calls of the form V1->setName(V2->getName()) with V1->takeName(V2), 
which is significantly more efficient.

llvm-svn: 49614
 2008-04-13 19:15:17 +00:00
Devang Patel
8cd2a3ae2a Fix insert point handling for multiple return values. 
llvm-svn: 49367
 2008-04-08 02:24:08 +00:00
Duncan Sands
1416ebf1fe The "stacksave is not nounwind problem" no longer 
needs to be fixed here - a previous commit made sure
that intrinsics always get the right attributes.
So remove no-longer needed code, and while there use
Intrinsic::getDeclaration rather than getOrInsertFunction. 

llvm-svn: 49337
 2008-04-07 13:43:58 +00:00
Duncan Sands
fbc6adcc59 Use Intrinsic::getDeclaration to get hold of 
intrinsics.  Fix up the argument type (should
be i8*, was an array*).

llvm-svn: 49336
 2008-04-07 13:41:19 +00:00
Dale Johannesen
87e484f08b Mark calls to llvm.stacksave, llvm.stackrestore as 
nounwind.  When such calls are inlined into something
else that is invoked, they were getting changed to invokes,
which is badness.

llvm-svn: 49299
 2008-04-07 00:08:48 +00:00
Gabor Greif
e9ecc68d8f API changes for class Use size reduction, wave 1. 
Specifically, introduction of XXX::Create methods
for Users that have a potentially variable number of
Uses.

llvm-svn: 49277
 2008-04-06 20:25:17 +00:00
Evan Cheng
ac38d444e2 1. Drop default inline threshold back down to 200. 
2. Do not use # of basic blocks as part of the cost computation since it doesn't really figure into function size.
3. More aggressively inline function with vector code.

llvm-svn: 49061
 2008-04-01 23:59:29 +00:00
Dale Johannesen
5e4e051c2a Revert 49006 for the moment. 
llvm-svn: 49046
 2008-04-01 20:00:57 +00:00
Dale Johannesen
7d02cf3c9c Emit exception handling info for functions which are 
not marked nounwind, or for all functions when -enable-eh
is set, provided the target supports Dwarf EH.

llvm-gcc generates nounwind in the right places; other FEs
will need to do so also.  Given such a FE, -enable-eh should
no longer be needed.

llvm-svn: 49006
 2008-03-31 23:40:23 +00:00
Evan Cheng
3471ae8c5d Increasing the inline limit from (overly conservative) 200 to 300. Given each BB costs 20 and each instruction costs 5, 200 means a 4 BB function + 24 instructions (actually less because caller's size also contributes to it). 
Furthermore, double the limit when more than 10% of the callee instructions are vector instructions. Multimedia kernels tend to love inlining.

llvm-svn: 48725
 2008-03-24 06:37:48 +00:00
Anton Korobeynikov
d38b3fb127 Preserve calling convention during function cloning 
llvm-svn: 48708
 2008-03-23 16:03:00 +00:00
Evan Cheng
5daf090a1a 80 col violation. 
llvm-svn: 48573
 2008-03-20 00:20:23 +00:00
Nick Lewycky
7698bfbe16 Update -mem2reg to use succ_iterator instead of iterating across TerminatorInst 
successors. This makes it support nounwind.

llvm-svn: 48320
 2008-03-13 02:42:41 +00:00
Dan Gohman
20af5a0fe7 Check to see if a two-entry PHI block can be simplified 
before trying to merge the block into its predecessors.
This allows two-entry-phi-return.ll to be simplified
into a single basic block.

llvm-svn: 48252
 2008-03-11 21:53:06 +00:00
Devang Patel
64d0f07085 Restore optimization that merges blocks when inline function 
has single return value.

llvm-svn: 48162
 2008-03-10 18:34:00 +00:00
Devang Patel
72ea2dc9a9 Simplify 
llvm-svn: 48161
 2008-03-10 18:22:16 +00:00
Devang Patel
c0325b2040 simplify 
llvm-svn: 48160
 2008-03-10 18:11:41 +00:00
Nick Lewycky
fb2c1a999a Turn unwind_to into "unwinds to". 
llvm-svn: 48123
 2008-03-10 02:20:00 +00:00
Nick Lewycky
42445be0df Firstly, having a BranchInst isn't exclusive with having an unwind_to. 
Secondly, we have to check whether the branch is actually pointing to the block
with the unwind in it. We could have gotten here because of the unwind_to alone.

llvm-svn: 48099
 2008-03-09 07:50:37 +00:00
Nick Lewycky
f3d637fa14 A BB that unwind_to an "unwind" inst is that same as one that doesn't unwind_to 
at all.

llvm-svn: 48096
 2008-03-09 07:36:38 +00:00
Nick Lewycky
11fc6f8765 Update the block cloner which fixes bugpoint on code using unwind_to (phew!) 
and also update the cloning interface's major user, the loop optimizations.

llvm-svn: 48088
 2008-03-09 05:24:34 +00:00
Nick Lewycky
5ce9b521d7 Update the inliner and simplifycfg to handle unwind_to. 
llvm-svn: 48086
 2008-03-09 05:10:13 +00:00
Nick Lewycky
cc24104703 Two things. Preserve the unwind_to when splitting a BB. 
Add the ability to remove just one instance of a BB from a phi node. This fixes
the compile error in the tree now.

llvm-svn: 48085
 2008-03-09 05:04:48 +00:00
Devang Patel
780b3ca64b Update inliner to handle functions that return multiple values. 
llvm-svn: 48020
 2008-03-07 20:06:16 +00:00
Devang Patel
3b1c95f885 Handle 'ret' with multiple values. 
llvm-svn: 47965
 2008-03-05 21:50:24 +00:00
Devang Patel
e516aa1127 Skip functions that return multiple values. 
llvm-svn: 47924
 2008-03-05 00:36:59 +00:00
Devang Patel
4566d885dd Use while loop. 
llvm-svn: 47909
 2008-03-04 21:59:49 +00:00
Devang Patel
941ab37ea8 Use cast instead of dyn_cast. 
Update test to use multiple return value directly, instead of relying on -sretpromotion.

llvm-svn: 47907
 2008-03-04 21:45:28 +00:00
Devang Patel
841322b32a Handle multiple return values. 
llvm-svn: 47904
 2008-03-04 21:15:15 +00:00
Anton Korobeynikov
18991d78fa Fix newly-introduced 4.3 warnings 
llvm-svn: 47375
 2008-02-20 12:07:57 +00:00
Anton Korobeynikov
1bfd121321 Make Transforms to be 4.3 warnings-clean 
llvm-svn: 47371
 2008-02-20 11:26:25 +00:00
Chris Lattner
c3591a0d48 remove the LowerSelect pass. The last client was the old Sparc backend, which is long dead by now. 
llvm-svn: 47323
 2008-02-19 07:49:17 +00:00
Chris Lattner
6b39cb907b switch simplifycfg from using vectors for most things to smallvectors, 
this speeds it up 2.3% on eon.

llvm-svn: 47261
 2008-02-18 07:42:56 +00:00
Chris Lattner
70e294660a Fix PR2029 
llvm-svn: 47129
 2008-02-14 19:18:13 +00:00
Chris Lattner
a838141957 Make RenamePass faster by making the 'is this a new phi node' 
check more intelligent.  This speeds up mem2reg from 5.29s to 
0.79s on a synthetic testcase with tons of predecessors and
phi nodes.

llvm-svn: 46767
 2008-02-05 21:26:23 +00:00
Duncan Sands
053c9871cd Revert r46393: readonly/readnone functions are no 
longer allowed to write through byval arguments.

llvm-svn: 46416
 2008-01-27 18:12:58 +00:00
Duncan Sands
c4dc3dc3a2 Create an explicit copy for byval parameters even 
when inlining a readonly function.

llvm-svn: 46393
 2008-01-26 06:41:49 +00:00
Duncan Sands
f52faf9a64 Do this more neatly. 
llvm-svn: 46369
 2008-01-25 22:06:51 +00:00
Chris Lattner
4f6c81ac68 we don't have to make an explicit copy of a byval argument when 
inlining a function if we know that the function does not write
to *any* memory.  This implements test/Transforms/Inline/byval2.ll

llvm-svn: 45912
 2008-01-12 18:54:29 +00:00