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Author SHA1 Message Date
Dan Gohman
34263074cb Convert tests using "grep -c ... | grep ..." to use the count script. 
llvm-svn: 41100
 2007-08-15 13:49:33 +00:00
Dan Gohman
10c3892fde Delete extraneous uses of wc -l. 
llvm-svn: 41099
 2007-08-15 13:45:35 +00:00
Dan Gohman
f259c770df Convert another test to use the count script. This one didn't fit the 
regex used to convert all the others because the first '|' was on a
separate line.

llvm-svn: 41098
 2007-08-15 13:42:36 +00:00
Dan Gohman
794fa1f8f7 Convert tests using "| wc -l | grep ..." to use the count script. 
llvm-svn: 41097
 2007-08-15 13:36:28 +00:00
Devang Patel
423d18e306 Dominance frontier is now required. 
llvm-svn: 41096
 2007-08-15 03:34:53 +00:00
Devang Patel
315ea9c519 Cleanup removeBlocks. 
Use dominance frontier to fixup incoming edges of successor blocks not domianted by DeadBB.
Use df_iterator to walk and delete basic blocks dominated by DeadBB.

llvm-svn: 41095
 2007-08-15 03:31:47 +00:00
Reid Spencer
2cfe29fc0b Remove unneeded header file. 
llvm-svn: 41094
 2007-08-15 03:01:04 +00:00
Devang Patel
b0924a406a Avoid triangle loops. 
llvm-svn: 41093
 2007-08-15 02:14:55 +00:00
Devang Patel
1dd44d7501 Break infinite loop. 
llvm-svn: 41091
 2007-08-14 23:59:17 +00:00
Devang Patel
d39b9d41bb Avoid nested loops at the moment. 
llvm-svn: 41090
 2007-08-14 23:53:57 +00:00
Evan Cheng
92df220df4 New test. 
llvm-svn: 41087
 2007-08-14 23:34:50 +00:00
Evan Cheng
70879e8dae - If a def is dead, do not spill it. 
- If the defs of a spilled rematerializable MI are dead after the spill store is deleted, delete
  the def MI as well.

llvm-svn: 41086
 2007-08-14 23:25:37 +00:00
Evan Cheng
e10e5e71b4 Test case for PR1596. 
llvm-svn: 41085
 2007-08-14 23:21:10 +00:00
Evan Cheng
f901915207 Fix for PR1596: AdjustCopiesBackFrom() should conservatively check if any of its sub-registers may overlap with the interval of the copy that's being coalesced. 
llvm-svn: 41084
 2007-08-14 23:19:28 +00:00
Evan Cheng
0fbe2a0ec4 If a MI's def is remat as well as spilled, and the store is later deemed dead, mark the def operand as isDead. 
llvm-svn: 41083
 2007-08-14 20:23:13 +00:00
Devang Patel
7ff808f08e Fix dominance frontier update while removing blocks. 
llvm-svn: 41082
 2007-08-14 18:35:57 +00:00
Owen Anderson
b970937b06 Eliminate PHI nodes with constant values during normal GVN processing, even when 
they're not related to eliminating a load.

llvm-svn: 41081
 2007-08-14 18:33:27 +00:00
Owen Anderson
d9a7b61a64 Be more aggressive in pruning unnecessary PHI nodes when doing PHI construction. 
llvm-svn: 41080
 2007-08-14 18:16:29 +00:00
Owen Anderson
c855195b2f Make GVN iterative. 
llvm-svn: 41078
 2007-08-14 18:04:11 +00:00
Owen Anderson
8d15350c4e Fix a case where GVN was failing to return true when it had, in fact, modified 
the function.

llvm-svn: 41077
 2007-08-14 17:59:48 +00:00
Devang Patel
833a8ea187 Assert sooner. Fix wordings. 
llvm-svn: 41075
 2007-08-14 16:53:52 +00:00
Devang Patel
35c1c452b0 No need to use iterator to erase basic block. 
llvm-svn: 41074
 2007-08-14 16:53:24 +00:00
Chris Lattner
603e77e54e tcl seems to hate |& for some reason. 
llvm-svn: 41073
 2007-08-14 16:19:35 +00:00
Chris Lattner
a76ba56608 switch this to use fastcc to avoid fpstack traffic on x86-32. Switch to 
using the count script instead of wc -l

llvm-svn: 41072
 2007-08-14 16:14:10 +00:00
Evan Cheng
5c28086ce6 Update test case. A spill should now be deleted. 
llvm-svn: 41070
 2007-08-14 09:16:00 +00:00
Evan Cheng
de24ad8897 If a spilled value is being reused and the use is a kill, that means there are 
no more uses within the MBB and the spilled value isn't live out of the MBB.
Then it's safe to delete the spill store.

llvm-svn: 41069
 2007-08-14 09:11:18 +00:00
Evan Cheng
fb29461720 Spiller reuse test case. 
llvm-svn: 41068
 2007-08-14 05:51:03 +00:00
Evan Cheng
886c1fe427 If a rematerializable def is not deleted, i.e. it is also spilled, check if the 
spilled value is available for reuse.

llvm-svn: 41067
 2007-08-14 05:42:54 +00:00
Evan Cheng
5b64e19e06 Kill info update bugs. 
llvm-svn: 41064
 2007-08-14 01:56:58 +00:00
Devang Patel
5d8b2b3293 Handle last value assignments. 
llvm-svn: 41063
 2007-08-14 01:30:57 +00:00
Devang Patel
55b6a8f212 StartValue is already calculated. 
llvm-svn: 41062
 2007-08-14 00:15:45 +00:00
Evan Cheng
e79599dc2d Now capable of rematerializing coalesced live intervals. 
llvm-svn: 41061
 2007-08-13 23:54:16 +00:00
Evan Cheng
215f802b75 Re-implement trivial rematerialization. This allows def MIs whose live intervals that are coalesced to be rematerialized. 
llvm-svn: 41060
 2007-08-13 23:45:17 +00:00
Evan Cheng
eef13203e7 Fix a typo pointd out by Maarten ter Huurne. 
llvm-svn: 41059
 2007-08-13 23:27:11 +00:00
Devang Patel
762259ba73 Preserve simple analysis. 
llvm-svn: 41054
 2007-08-13 22:22:13 +00:00
Devang Patel
e3ea62e49a Preserve dominator info. 
llvm-svn: 41053
 2007-08-13 22:13:24 +00:00
Devang Patel
993388b1ee Add methods to erase basic block entry. 
llvm-svn: 41052
 2007-08-13 22:10:29 +00:00
Devang Patel
d1d0316041 If NewBB dominates DestBB then DestBB is not part of NewBB's dominance frontier. 
llvm-svn: 41051
 2007-08-13 21:59:17 +00:00
Chris Lattner
80032c89e6 move assertion into mutex guard, a partial fix for PR1606. 
llvm-svn: 41050
 2007-08-13 20:08:16 +00:00
Dan Gohman
2390ff5060 When x86 addresses matching exceeds its recursion limit, check to 
see if the base register is already occupied before assuming it can be
used. This fixes bogus code generation in the accompanying testcase.

llvm-svn: 41049
 2007-08-13 20:03:06 +00:00
Chris Lattner
7dfec1ee54 Fix PR1607 
llvm-svn: 41048
 2007-08-13 18:42:37 +00:00
Chris Lattner
a41b2e2d2f test that the ptr-to-method is succefully eliminated, leaving just the vtable dispatch. 
llvm-svn: 41047
 2007-08-13 17:17:03 +00:00
Chris Lattner
8674db5fbf Constant fold: getelementptr (i8* inttoptr (i64 1 to i8*), i32 -1) 
Into: inttoptr (i64 0 to i8*)  -> null

This occurs in the example in PR1602.  With this fixed, we now compile
the example in PR1602 into fully "devirtualized" code:

define void @_Z1g1S(%struct.S* noalias  %s) {
entry:        %tmp131415 = getelementptr %struct.S* %s, i32 0, i32 0          ; <i32 (...)***> [#uses=1]        %tmp16 = load i32 (...)*** %tmp131415, align 4          ; <i32 (...)**> [#uses=1]
        %tmp26277 = load i32 (...)** %tmp16             ; <i32 (...)*> [#uses=1]
        %tmp2829 = bitcast i32 (...)* %tmp26277 to void (%struct.S*)*           ; <void (%struct.S*)*> [#uses=1]
        tail call void %tmp2829( %struct.S* %s )
        ret void
}

This still has the vtable dispatch (as required) but does not have any pointer
to method cruft left.

llvm-svn: 41046
 2007-08-13 17:09:08 +00:00
Evan Cheng
54b799dc76 Kill info update bugs. 
llvm-svn: 41043
 2007-08-13 07:12:23 +00:00
Reid Spencer
7ce13be5bb Make use of the llvm-ld tool's new ability to read input from stdin to extract 
the list of link time passes to be run, just as for opt, with the
-debug-pass=Arguments option.

llvm-svn: 41040
 2007-08-13 06:19:51 +00:00
Reid Spencer
6c60a4c945 Don't build llvm-stub twice. 
llvm-svn: 41039
 2007-08-13 00:25:47 +00:00
Chris Lattner
cab9f1e32b oops, forgot to commit this. 
llvm-svn: 41034
 2007-08-12 16:55:14 +00:00
Reid Spencer
8c5c7c8453 Change casts from old style to new style. This helps document the details 
better, gives the compiler a chance to validate the cast and reduces warnings
if the user turns on -Wold-style-cast option.

llvm-svn: 41033
 2007-08-12 08:12:35 +00:00
Devang Patel
63d1affed8 Split loops and do CFG cleanup. 
llvm-svn: 41029
 2007-08-12 07:02:51 +00:00
Reid Spencer
c71871ba30 Remove unused variables. 
llvm-svn: 41028
 2007-08-12 04:45:36 +00:00