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Author SHA1 Message Date
Chris Lattner
3117d33f74 Add an ugly note. 
llvm-svn: 50029
 2008-04-21 04:46:30 +00:00
Chris Lattner
1554876e9d Add jump threading to liblto. 
llvm-svn: 50028
 2008-04-21 04:31:40 +00:00
Chris Lattner
8d8e939418 run the jump threading pass in llvm-ld also 
llvm-svn: 50027
 2008-04-21 04:28:40 +00:00
Chris Lattner
c9547a13e5 enable jump threading pass by default. This causes no miscompilations 
and can significantly shrinkify some code, particularly from C++ land.

llvm-svn: 50025
 2008-04-21 04:22:09 +00:00
Chris Lattner
26468c09af fix a bug introduced by Nicholas' "unwinds to" stuff: we 
lost newlines between blocks.

llvm-svn: 50024
 2008-04-21 04:20:33 +00:00
Chris Lattner
ca82082080 don't assume that the argument passed to fprintf("%s" is a string. This 
fixes a crash in opt on 433.milc.

llvm-svn: 50023
 2008-04-21 03:18:33 +00:00
Chris Lattner
9a21fbcf81 Use the new SplitBlockPredecessors to implement a todo. 
llvm-svn: 50022
 2008-04-21 02:57:57 +00:00
Chris Lattner
57e11a167d 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
ba4567c335 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
53fa4554be 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
34894abd7f fit some more code in 80 cols. 
llvm-svn: 50016
 2008-04-21 00:25:49 +00:00
Chris Lattner
7da61d5766 simplify code, fit in 80 cols. 
llvm-svn: 50015
 2008-04-21 00:23:14 +00:00
Chris Lattner
45b3ace5a3 fit in 80 cols 
llvm-svn: 50014
 2008-04-21 00:19:16 +00:00
Nicolas Geoffray
aaa764cf3a Be pessimistic in computing the buffer size when aligning. 
llvm-svn: 50008
 2008-04-20 23:39:44 +00:00
Nicolas Geoffray
036fb2bebf Don't forget to update the current operand when getting the size of an instruction. 
llvm-svn: 50007
 2008-04-20 23:36:47 +00:00
Chris Lattner
56fbe56c25 finish the first cut of a jump threading pass implementation. 
llvm-svn: 50006
 2008-04-20 22:39:42 +00:00
Chris Lattner
4037996a0c replace a slow and verbose version of Instruction::isUsedOutsideOfBlock with 
a call to Instruction::isUsedOutsideOfBlock.

llvm-svn: 50005
 2008-04-20 22:18:22 +00:00
Chris Lattner
368e2b28bf add a handy helper method to instruction, useful for determining 
whether it is used outside of some block.  This can be used to see
if there are any non-local references, for example.

llvm-svn: 50004
 2008-04-20 22:11:30 +00:00
Chris Lattner
c714a8cee8 we can only thread blocks when there is a pred we can determine the succ of. 
llvm-svn: 50003
 2008-04-20 21:18:09 +00:00
Chris Lattner
4fcfb808fb improve comments, infrastructure, and add some validity checks for threading. 
Add a cost function.

llvm-svn: 50002
 2008-04-20 21:13:06 +00:00
Chris Lattner
c8c74f39db Add a new Jump Threading pass, which will handle cases 
such as those in PR2235.  Right now the pass is not very
effective. :)

llvm-svn: 50000
 2008-04-20 20:35:01 +00:00
Chris Lattner
75df16a5b0 hopefully resolve PR2240 
llvm-svn: 49999
 2008-04-20 19:59:12 +00:00
Chris Lattner
2bed045e5e rearrange some code, simplify handling of shifts. 
llvm-svn: 49995
 2008-04-20 18:24:14 +00:00
Dale Johannesen
15969b664d Check we aren't trying to convert PPC long double. 
This fixes the testsuite failure on ppcf128-4.ll.

llvm-svn: 49994
 2008-04-20 18:23:46 +00:00
Nicolas Geoffray
c80229e1c7 Cosmetic changes, as suggested by Evan. No functionality changes. 
llvm-svn: 49993
 2008-04-20 17:44:19 +00:00
Dale Johannesen
3453a89a31 (re)fix handling of UGT. Pointed out by Nick Lewycky. 
llvm-svn: 49991
 2008-04-20 16:58:57 +00:00
Torok Edwin
e038c595c1 g++-4.3 build-fix: CHAR_BIT requires <climits>. 
llvm-svn: 49989
 2008-04-20 08:33:11 +00:00
Nicolas Geoffray
5fdce98ebd Do not hold the JIT lock when materializing a function and verify if the 
function has already been codegen'd. This is required by the Java class loading
mechanism which executes Java code when materializing a function.

llvm-svn: 49988
 2008-04-20 08:33:02 +00:00
Chris Lattner
2c5b96fbee A better fix for my previous patch, MOVZQI2PQIrr just requires SSE2. 
llvm-svn: 49986
 2008-04-20 05:52:46 +00:00
Chris Lattner
8503e2d236 Not all x86-64 machines have sse3 apparently. 
llvm-svn: 49985
 2008-04-20 05:47:56 +00:00
Dale Johannesen
675fca3ee1 Check that APFloat::convert is not trying to target 
ppc long double, which doesn't work.

This may break some stuff temporarily, but I want to
avoid the propagation of code that assumes this works.

llvm-svn: 49983
 2008-04-20 01:34:03 +00:00
Chris Lattner
33e206ef89 regenerate 
llvm-svn: 49978
 2008-04-20 00:41:19 +00:00
Chris Lattner
f390d62b7f Switch to using Simplified ConstantFP::get API. 
llvm-svn: 49977
 2008-04-20 00:41:09 +00:00
Chris Lattner
0cda383725 Use simplified ConstantFP::get method, fix a bug handling frem x, 0 with long doubles. 
llvm-svn: 49976
 2008-04-20 00:26:06 +00:00
Chris Lattner
5b6f941e70 free(null) -> noop 
llvm-svn: 49972
 2008-04-19 22:41:32 +00:00
Chris Lattner
a9d8d647ca rename *.llx -> *.ll, last batch. 
llvm-svn: 49971
 2008-04-19 22:32:52 +00:00
Chris Lattner
c310b1f1f3 rename *.llx -> *.ll 
llvm-svn: 49970
 2008-04-19 22:29:10 +00:00
Chris Lattner
63bd1df323 rename *.llx -> *.ll 
llvm-svn: 49969
 2008-04-19 22:26:29 +00:00
Gabor Greif
441be4d65b merge of 49966 from branches/ggreif/use-diet to trunk. these are already active API changes 
llvm-svn: 49968
 2008-04-19 22:25:09 +00:00
Chris Lattner
8cde1e71f0 Implement PR2206. 
llvm-svn: 49967
 2008-04-19 22:17:26 +00:00
Chris Lattner
1303e72c66 refactor handling of symbolic constant folding, picking up 
a few new cases( see Integer/a1.ll), but not anything that
would happen in practice.

llvm-svn: 49965
 2008-04-19 21:58:19 +00:00
Chris Lattner
57bd4076b5 indentation fix. 
llvm-svn: 49964
 2008-04-19 21:13:00 +00:00
Chris Lattner
2f237756c5 Some clarifications suggested by Jon Sargeant 
llvm-svn: 49963
 2008-04-19 21:01:16 +00:00
Chris Lattner
d299f7b8cf Allow argpromote to promote struct arguments with a specified number 
of elements.  Patch by Matthijs Kooijman!

llvm-svn: 49962
 2008-04-19 19:50:01 +00:00
Evan Cheng
f583b3feb6 64-bit atomic operations. 
llvm-svn: 49949
 2008-04-19 02:30:38 +00:00
Evan Cheng
1c54ebbe2f Also LXCHG64 -> XCHG64rm. 
llvm-svn: 49948
 2008-04-19 02:05:42 +00:00
Evan Cheng
09e77f6b83 PPC32 atomic operations. 
llvm-svn: 49947
 2008-04-19 01:30:48 +00:00
Evan Cheng
b1d240f973 xchg which references a memory operand does not need to lock prefix. Atomicity is guaranteed. 
llvm-svn: 49946
 2008-04-19 01:20:30 +00:00
Dan Gohman
ac2fac937c Teach llvm-as to accept function types with multiple return types. 
llvm-svn: 49945
 2008-04-19 00:24:39 +00:00
Dale Johannesen
c1b7e0b477 Fix a scalar evolution bug. Reversing everything 
does not work because of 0; 2>0 but -2U is also >0.

llvm-svn: 49928
 2008-04-18 21:38:31 +00:00