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19 Commits

Author SHA1 Message Date
Evan Cheng
c3f507f98a Re-apply r124518 with fix. Watch out for invalidated iterator. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124526 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-29 04:46:23 +00:00
Evan Cheng
b0a42fdb36 Revert r124518. It broke Linux self-host. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124522 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-29 02:43:04 +00:00
Evan Cheng
5e6940788f Re-commit r124462 with fixes. Tail recursion elim will now dup ret into unconditional predecessor to enable TCE on demand. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124518 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-29 01:29:26 +00:00
Evan Cheng
1b5c0cb71d Revert r124462. There are a few big regressions that I need to fix first. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124478 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-28 07:12:38 +00:00
Evan Cheng
40f64cb0de - Stop simplifycfg from duplicating "ret" instructions into unconditional 
branches. PR8575, rdar://5134905, rdar://8911460.
- Allow codegen tail duplication to dup small return blocks after register
  allocation is done.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124462 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-28 02:19:21 +00:00
Chris Lattner
c232a2e559 make these tests a bit less fragile 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121682 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-13 05:10:30 +00:00
Dan Gohman
e2c6d131d1 Teach SimplifyCFG how to simplify indirectbr instructions. 
- Eliminate redundant successors.
 - Convert an indirectbr with one successor into a direct branch.

Also, generalize SimplifyCFG to be able to be run on a function entry block.
It knows quite a few simplifications which are applicable to the entry
block, and it only needs a few checks to avoid trouble with the entry block.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111060 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-14 00:29:42 +00:00
Chris Lattner
1a0e7081c3 Implement PR5795 by merging duplicated return blocks. This could go further 
by merging all returns in a function into a single one, but simplifycfg 
currently likes to duplicate the return (an unfortunate choice!)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91890 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-22 06:07:30 +00:00
Chris Lattner
42385b03aa convert to filecheck 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91889 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-22 06:04:26 +00:00
Chris Lattner
dac8bde235 if basic blocks are destroyed while there are *just* BlockAddress' hanging 
around, then zap them.  This is analogous to dangling constantexprs hanging
off functions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85627 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-30 22:39:36 +00:00
Chris Lattner
50b957549b fix a bunch of spurious failures for people whose home directory 
is sabre.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81528 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-09-11 17:02:12 +00:00
Dan Gohman
3e054fe9ef Use opt -S instead of piping bitcode output through llvm-dis. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81257 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-09-08 22:34:10 +00:00
Dan Gohman
b1e1e82c54 Change these tests to feed the assembly files to opt directly, instead 
of using llvm-as, now that opt supports this.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81226 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-09-08 16:50:01 +00:00
Tanya Lattner
f04d8d1593 Upgrade tests to not use llvm-upgrade. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48483 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-18 03:45:45 +00:00
Reid Spencer
69ccadd753 Use the llvm-upgrade program to upgrade llvm assembly. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32115 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-12-02 04:23:10 +00:00
Misha Brukman
e78760e179 Renamed as' => llvm-as', dis' => llvm-dis', link' => llvm-link'. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8558 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-16 15:29:54 +00:00
Chris Lattner
d808e45658 Eliminate explicit control flow in tests 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6961 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-06-28 23:13:12 +00:00
Chris Lattner
4a4e39d647 Update run line 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2693 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-05-21 19:33:17 +00:00
Chris Lattner
2077ffab85 Initial testcases for CFG simplify (which is part of DCE for now) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2466 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-05-06 02:37:38 +00:00