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3997 Commits

Author SHA1 Message Date
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
Ted Kremenek
d48ed17d18 Fix some compilation errors on msvc: 
- "Redefinition of I" (iterator masks previous definition)
- include missing header file

Patch by Argiris Kirtzidis!

llvm-svn: 48115
 2008-03-09 18:32:50 +00:00
Nick Lewycky
0ac65c3b99 And again. 
llvm-svn: 48112
 2008-03-09 17:13:05 +00:00
Nick Lewycky
929703b29e Braces belong here. No functionality change. 
llvm-svn: 48111
 2008-03-09 17:11:18 +00:00
Nick Lewycky
83750d9caf SCCP also needs to be taught to follow unwind_to 
llvm-svn: 48109
 2008-03-09 09:44:38 +00:00
Nick Lewycky
271506f29c Don't eliminate blocks that are only reachable by unwind_to. 
llvm-svn: 48106
 2008-03-09 08:50:23 +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
Nick Lewycky
4d0ed842b1 Prune the unwind_to labels on BBs that don't need them. Another step in the 
removal of invoke, PR1269.

llvm-svn: 48084
 2008-03-09 04:55:16 +00:00
Nick Lewycky
35e92c7bea Not all users of a BB are Instructions any more. 
llvm-svn: 48047
 2008-03-08 07:48:41 +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
Andrew Lenharth
3f13b6630a add a pass that can extract all kinds of global values, not just functions. Update llvm-extract to use it and optionally extract a global variable if you want it too 
llvm-svn: 48015
 2008-03-07 19:51:57 +00:00
Gabor Greif
ad19df0687 fix typos 
llvm-svn: 47994
 2008-03-06 10:36:00 +00:00
Nick Lewycky
d0b62a1552 Don't try to simplify urem and srem using arithmetic rules that don't work 
under modulo (overflow). Fixes PR1933.

llvm-svn: 47987
 2008-03-06 06:48:30 +00:00
Devang Patel
26cabc447c Skip, for now, callsites where use of sret argument is not dominated by callsite. 
llvm-svn: 47980
 2008-03-05 23:39:23 +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
ea4cb89d34 Filter nested structs 
llvm-svn: 47906
 2008-03-04 21:32:09 +00:00
Devang Patel
841322b32a Handle multiple return values. 
llvm-svn: 47904
 2008-03-04 21:15:15 +00:00
Devang Patel
297ea0de75 Use appropriate index to get the result value. 
llvm-svn: 47897
 2008-03-04 19:22:54 +00:00
Devang Patel
748c77f530 Skip sret attribute while preparing attribute list for 
new function and new call sites.

llvm-svn: 47896
 2008-03-04 19:12:58 +00:00
Devang Patel
ed6e4b0b7d Increment counter that keeps track of total number of sret promoted. 
llvm-svn: 47892
 2008-03-04 17:48:11 +00:00
Devang Patel
6bb36e686d Skip declarations. 
llvm-svn: 47890
 2008-03-04 17:47:06 +00:00
Devang Patel
5b69f3fa33 Process externally visible functions also. Later on code generator will do the right thing. 
llvm-svn: 47889
 2008-03-04 17:46:26 +00:00
Devang Patel
ecce5af83d Collect statistics. 
llvm-svn: 47888
 2008-03-04 17:44:37 +00:00
Devang Patel
9d91785987 s/isReturnStruct()/hasStructRetAttr()/g 
llvm-svn: 47857
 2008-03-03 21:46:28 +00:00
Devang Patel
b0faf89133 Preserve paramater attributes. 
llvm-svn: 47847
 2008-03-03 18:36:03 +00:00
Chris Lattner
a683edb2d8 allow specified inline threshold to be negative, as the value is 
itself sometimes negative.

llvm-svn: 47786
 2008-03-01 08:09:51 +00:00
Devang Patel
e8ddaba169 Fix cut-n-pasto. 
llvm-svn: 47777
 2008-02-29 23:41:13 +00:00
Devang Patel
4eedfd2421 Add pass to promote sret. 
This pass transforms 

  %struct._Point = type { i32, i32, i32, i32, i32, i32 }
  define internal void @foo(%struct._Point* sret  %agg.result)

into

  %struct._Point = type { i32, i32, i32, i32, i32, i32 }
  define internal %struct._Point @foo()

This pass updates foo() clients appropriately to use
getresult instruction to extract return values.

This pass is not yet ready for prime time.

llvm-svn: 47776
 2008-02-29 23:34:08 +00:00
Chris Lattner
c966cebe93 fix a bug Anders ran into where scalarrepl would crash when promoting 
a union containing a vector and an array whose elements were smaller than
the vector elements.  this means we need to compile the load of the 
array elements into an extract element plus a truncate.

llvm-svn: 47752
 2008-02-29 07:12:06 +00:00
Chris Lattner
77205def10 Refactor some code out of ConvertUsesToScalar into their own methods, no 
functionality change.

llvm-svn: 47751
 2008-02-29 07:03:13 +00:00
Chris Lattner
c612571555 Folding or(fcmp,fcmp) only works if the operands of the fcmps are the same fp type. 
llvm-svn: 47750
 2008-02-29 06:09:11 +00:00
Owen Anderson
d29ed0b122 Fix an issue where GVN had the sizes of the two memcpy's reverse, resulting 
in an invalid transformation.

llvm-svn: 47639
 2008-02-26 23:06:17 +00:00
Gabor Greif
aa2617206f fix http://llvm.org/bugs/show_bug.cgi?id=2097 
llvm-svn: 47615
 2008-02-26 19:13:21 +00:00
Eli Friedman
666bbe34f4 Fix for pr2093: direct operands aren't necessarily addresses, so don't 
try to simplify them.

llvm-svn: 47610
 2008-02-26 18:37:49 +00:00
Bill Wendling
d188e03715 De-tabify. 
llvm-svn: 47599
 2008-02-26 10:53:30 +00:00
Evan Cheng
1da250097b Fix PR2076. CodeGenPrepare now sinks address computation for inline asm memory 
operands into inline asm block.

llvm-svn: 47589
 2008-02-26 02:42:37 +00:00
Owen Anderson
df1d2b02f9 Fix an issue where GVN was performing the return slot optimization when it was 
not safe.  This is fixed by more aggressively checking that the return slot is
not used elsewhere in the function.

llvm-svn: 47544
 2008-02-25 04:08:09 +00:00
Owen Anderson
40dca46ddb Fix an issue where GVN would try to use an instruction before its definition when performing return slot optimization. 
llvm-svn: 47541
 2008-02-25 00:40:41 +00:00
Dale Johannesen
09f410b6d7 Split ParameterAttributes.h, putting the complicated 
stuff into ParamAttrsList.h.  Per feedback from
ParamAttrs changes.

llvm-svn: 47504
 2008-02-22 22:17:59 +00:00
Zhou Sheng
3b8eb704fc Fixed a typo. 
llvm-svn: 47478
 2008-02-22 10:00:35 +00:00