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424 Commits

Author SHA1 Message Date
Chris Lattner
28e7b57605 add a testcase for forming memset from noncontiguous stores. 
llvm-svn: 48938
 2008-03-29 04:51:35 +00:00
Evan Cheng
2b72c05992 Handle a special case xor undef, undef -> 0. Technically this should be transformed to undef. But this is such a common idiom (misuse) we are going to handle it. 
llvm-svn: 48791
 2008-03-25 20:07:13 +00:00
Tanya Lattner
8bf97c2324 Byebye llvm-upgrade! 
llvm-svn: 48762
 2008-03-25 04:26:08 +00:00
Devang Patel
a38f58aa5c Add incoming value from header only if phi node has any use inside the loop. 
llvm-svn: 48738
 2008-03-24 20:16:14 +00:00
Chris Lattner
c2c0c8303c apparently tclsh doesn't lex like bash. Weird. 
llvm-svn: 48732
 2008-03-24 17:41:57 +00:00
Chris Lattner
9ca6bb4f16 pass the option so this test tests the right thing. 
llvm-svn: 48731
 2008-03-24 17:36:38 +00:00
Evan Cheng
c3cf9f872a Transform (zext (or (icmp), (icmp))) to (or (zext (cimp), (zext icmp))) if at least one of the (zext icmp) can be transformed to eliminate an icmp. 
llvm-svn: 48715
 2008-03-24 00:21:34 +00:00
Owen Anderson
e3605ac108 Use normal naming convention for test. 
llvm-svn: 48693
 2008-03-22 21:08:33 +00:00
Chris Lattner
53ccb62712 implement an initial hack at a straight-line store -> memset optimization. 
This fires dozens of times across spec and multisource, but I don't know
if it actually speeds stuff up.  Hopefully the testers will show something
nice :)

llvm-svn: 48680
 2008-03-22 05:37:16 +00:00
Chris Lattner
c44160ce6e Teach masked value is zero about add and sub, and use MVIZ to 
simplify things like (X & 4) >> 1 == 2  --> (X & 4) == 4.

since it is obvious that the shift doesn't remove any bits.

llvm-svn: 48631
 2008-03-21 05:19:58 +00:00
Tanya Lattner
ab7872c06c Upgrade tests. 
llvm-svn: 48538
 2008-03-19 07:28:33 +00:00
Tanya Lattner
f9d25185d5 Upgrade tests. 
llvm-svn: 48536
 2008-03-19 05:39:35 +00:00
Tanya Lattner
0ea4c8d706 Upgrade tests to not use llvm-upgrade. 
llvm-svn: 48530
 2008-03-19 04:36:04 +00:00
Tanya Lattner
1d526b90aa Upgrade tests to not use llvm-upgrade. 
llvm-svn: 48529
 2008-03-19 04:14:49 +00:00
Tanya Lattner
f73582b17c Remove llvm-upgrade and update tests. 
llvm-svn: 48527
 2008-03-19 03:47:13 +00:00
Tanya Lattner
4e59897d3d Upgrade tests to not use llvm-upgrade. 
llvm-svn: 48484
 2008-03-18 04:14:37 +00:00
Tanya Lattner
baa370b37a Upgrade tests to not use llvm-upgrade. 
llvm-svn: 48483
 2008-03-18 03:45:45 +00:00
Bill Wendling
68a930b33e The inst combining of inttoptr into GEP with one index was using the bit size of 
the type instead of the byte size. This was causing troublesome mis-compilations.

True to form, this took 2 days to find and is a one-line fix. :-P

llvm-svn: 48354
 2008-03-14 05:12:19 +00:00
Owen Anderson
7a69e3aef3 Fix a bug in GVN that Duncan noticed, where we potentially need to insert a 
pointer bitcast when performing return slot optimization.

llvm-svn: 48343
 2008-03-13 22:07:10 +00:00
Owen Anderson
6ff0b822b4 Improve the return slot optimization to be both more aggressive (not limited to sret parameters), and 
safer (when the passed pointer might be invalid).  Thanks to Duncan and Chris for the idea behind this, 
and extra thanks to Duncan for helping me work out the trap-safety.

llvm-svn: 48280
 2008-03-12 07:37:44 +00:00
Devang Patel
fa8667a2dd Fix attribute handling. 
llvm-svn: 48262
 2008-03-12 00:07:03 +00:00
Devang Patel
7358165c99 Handle multiple ret values. 
llvm-svn: 48254
 2008-03-11 22:24:29 +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
Dan Gohman
8e9ae96a4a Make this test more challenging to help it avoid being 
optimized away before it tests what it is intended to test.

llvm-svn: 48251
 2008-03-11 21:47:57 +00:00
Devang Patel
a7a2075ab8 Initial multiple return values support. 
llvm-svn: 48210
 2008-03-11 05:46:42 +00:00
Dan Gohman
319234d67c Upgrade this test. 
llvm-svn: 48207
 2008-03-11 02:19:59 +00:00
Devang Patel
741f491d90 Simplify 
llvm-svn: 48163
 2008-03-10 18:38:30 +00:00
Tanya Lattner
5f4b355f20 Remove llvm-upgrade and update tests. 
llvm-svn: 48137
 2008-03-10 07:21:50 +00:00
Nick Lewycky
fb2c1a999a Turn unwind_to into "unwinds to". 
llvm-svn: 48123
 2008-03-10 02:20:00 +00:00
Tanya Lattner
aa6f5c9ddd Remove llvm-upgrade and update tests. 
llvm-svn: 48103
 2008-03-09 08:16:40 +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
5ce9b521d7 Update the inliner and simplifycfg to handle unwind_to. 
llvm-svn: 48086
 2008-03-09 05:10:13 +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
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
47d774b2c8 Place for sret promotion tests. 
llvm-svn: 48016
 2008-03-07 20:00:15 +00:00
Nick Lewycky
3e2d7c9f85 Commit the testcase too. 
llvm-svn: 47988
 2008-03-06 06:50:03 +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
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
Tanya Lattner
5640bd186a Remove llvm-upgrade and update test cases. 
llvm-svn: 47793
 2008-03-01 09:15:35 +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
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
e41c19c987 Add PR number to testcase. 
llvm-svn: 47640
 2008-02-26 23:16:11 +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
Chris Lattner
a39cff3aaa fix this test so that the fn name doesn't match the regex 
llvm-svn: 47608
 2008-02-26 18:13:51 +00:00
Gabor Greif
3d9755f6ca Really feed llvm-as with the testcase, do not let it read from stdin. This fixes the hangs seen on solaris10. 
llvm-svn: 47604
 2008-02-26 13:37:13 +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
Zhou Sheng
aae582ba99 Testcase for Revision 47478. 
llvm-svn: 47531
 2008-02-23 10:59:51 +00:00