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Author SHA1 Message Date
Chris Lattner
96a86b2993 If a variable can only hold two values, and is not already a bool, shrink it 
down to actually BE a bool.  This allows simple value range propagation
stuff work harder, deleting comparisons in bzip2 in some hot loops.

This implements GlobalOpt/integer-bool.ll, which is the essence of the
loop condition distilled into a testcase.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18817 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-12 05:53:50 +00:00
Chris Lattner
ef07cc5e48 New testcase. Shrinking the variable to a bool allows instcombine to delete 
the condition.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18816 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-12 05:52:12 +00:00
Chris Lattner
a177c67471 If one side of and/or is known to be 0/-1, it doesn't matter 
if the other side is overdefined.

This allows us to fold conditions like:  if (X < Y || Y > Z) in some cases.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18807 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-11 23:15:19 +00:00
Chris Lattner
e0e50dbb9f New testcase. If one side of and/or is known to be 0/-1, it doesn't matter 
if the other side is overdefined.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18806 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-11 23:14:40 +00:00
Brian Gaeke
74be3a5794 Print llvm code one function at a time. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18805 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-11 22:17:07 +00:00
Chris Lattner
f23586c7ef Check in the file I forgot last night, to solve all of the crashes in every 
test in the suite.  :(


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18804 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-11 22:10:29 +00:00
Brian Gaeke
b3a86a6d49 JIT should print LLVM each function before selecting instructions for it. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18803 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-11 18:41:09 +00:00
Reid Spencer
707a27cfa8 Rename Path::get -> Path::toString 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18802 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-11 17:37:01 +00:00
Chris Lattner
5df6895f75 Update test 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18801 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-11 17:13:19 +00:00
Chris Lattner
2ffa47b6bf Only cound if we actually made a change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18800 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-11 17:00:14 +00:00
Chris Lattner
284d1b8827 The split bb is really the exit of the old function 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18799 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-11 16:59:54 +00:00
Reid Spencer
3680e84877 A little cleanup on this file. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18798 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-11 07:16:54 +00:00
Chris Lattner
74d74cdbdc New feature 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18797 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-11 06:10:52 +00:00
Chris Lattner
dade2d22ba Two bug fixes: 
1. Actually increment the Statistic for the GV elim optzn
 2. When resolving undef branches, only resolve branches in executable blocks,
    avoiding marking a bunch of completely dead blocks live.  This has a big
    impact on the quality of the generated code.

With this patch, we positively rip up vortex, compiling Ut_MoveBytes to a
single memcpy call. In vortex we get this:

     12 ipsccp           - Number of globals found to be constant
    986 ipsccp           - Number of arguments constant propagated
   1378 ipsccp           - Number of basic blocks unreachable
   8919 ipsccp           - Number of instructions removed


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18796 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-11 06:05:53 +00:00
Chris Lattner
864737bf9e Do not delete the entry block to a function. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18795 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-11 05:32:19 +00:00
Brian Gaeke
56c5d7369b Bools are *also* not ints. Sigh. Furthermore, most of the TargetMachine 
ctor parameters can be defaulted.

Print the transformed llvm code input to the instruction selector
when -print-machineinstrs is on, just like V9.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18794 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-11 05:19:04 +00:00
Brian Gaeke
4658ba13a8 Look for many more moves to fold (previously, we only 
*or g0, x      add g0, x          recognized * as a move)
 or  x, g0     add  x, g0
 or  0, x      add  0, x
 or  x, 0      add  x, 0


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18793 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-11 05:19:03 +00:00
Brian Gaeke
4f70b63ebc Make GEPs not suck so much: 
* Don't emit the Index * ElementSize multiply if Index is a constant.
* Use a shift, not a multiply, if ElementSize is 1/2/4/8.
* If ElementSize fits in the immediate field of SMUL, then put it there.

Fix a bug where struct offsets might be truncated (ConstantSInt::get is
now used instead of ConstantInt::get).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18792 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-11 05:19:02 +00:00
Brian Gaeke
9d6ffb47b4 Update lists of failing benchmarks, including info on which 
ones are failing in cbe.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18791 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-11 05:19:01 +00:00
Chris Lattner
dd336d196e Implement Transforms/SCCP/ipsccp-gvar.ll, by tracking values stored to 
non-address-taken global variables.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18790 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-11 05:15:59 +00:00
Chris Lattner
0982145d85 New testcase that ipsccp should handle. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18789 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-11 05:14:55 +00:00
Reid Spencer
1bc193464c Fix some minor spellos and grammaros. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18788 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-11 05:12:57 +00:00
Reid Spencer
96690a81d4 Revert the last patch. We really do need SimplyCFG. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18787 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-11 03:03:54 +00:00
Chris Lattner
0417feba29 Fix a bug where we could delete dead invoke instructions with uses. 
In functions where we fully constant prop the return value, replace all
ret instructions with 'ret undef'.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18786 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-11 02:53:57 +00:00
Reid Spencer
1fce09125c Path::get -> Path::toString 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18785 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-11 00:14:15 +00:00
Reid Spencer
357cf5439a Remove this pass as its no longer needed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18783 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-10 22:55:35 +00:00
Chris Lattner
c59e09ec54 This pass is no longer needed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18782 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-10 22:30:32 +00:00
Chris Lattner
5f9e8b4c3f Implement SCCP/ipsccp-conditional.ll, by totally deleting dead blocks. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18781 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-10 22:29:08 +00:00
Chris Lattner
9b07c66501 New testcase 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18780 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-10 22:28:49 +00:00
Reid Spencer
cb8cb8eb66 Get rid of warning from flex. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18779 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-10 21:59:47 +00:00
Chris Lattner
fc6ac50619 Fix SCCP/2004-12-10-UndefBranchBug.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18776 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-10 20:41:50 +00:00
Chris Lattner
bfaf88a4d3 Add missing accessor. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18775 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-10 20:35:47 +00:00
Chris Lattner
152f19ac65 Make sure to link the target-triple as well, so it ends up in the .llvm.bc file 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18774 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-10 20:26:15 +00:00
Chris Lattner
6e5fcf1898 New testcase that SCCP miscompiles. Luckily this is extremely unlikely to 
happen in practice, but IP-SCCP can trigger it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18773 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-10 20:10:23 +00:00
Reid Spencer
c2ef8cd934 Fix output for Flexing to not print full path of source. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18769 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-10 19:44:16 +00:00
Chris Lattner
2480535c1f Check in the right test 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18767 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-10 17:43:43 +00:00
Chris Lattner
7613437db9 Fix Regression/Transforms/SimplifyCFG/2004-12-10-SimplifyCFGCrash.ll, 
and the failure on make_dparser last night.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18766 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-10 17:42:31 +00:00
Chris Lattner
16483e50e2 New testcase for a bug exposed by the ipsccp pass, causing dparser to fail 
last night.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18765 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-10 17:41:43 +00:00
Chris Lattner
0bce6ace18 Fix typo 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18764 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-10 16:27:34 +00:00
John Criswell
9e2485c122 Merged in RELEASE_14 changes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18763 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-10 15:51:16 +00:00
Brian Gaeke
5aefa8a6fe Move -lowerselect later in the chain; some select instructions were 
slipping through into the instruction selector, which can't deal with
them yet.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18758 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-10 08:39:30 +00:00
Brian Gaeke
c2e5f3635a Add the rest of the multiply instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18757 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-10 08:39:29 +00:00
Brian Gaeke
1f42181f99 Support binary operations with immediates for <= cInt. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18756 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-10 08:39:28 +00:00
Brian Gaeke
2b314430f7 Update lists of failing benchmarks (except C++...something is the 
matter with my sparcv8 libstdc++.a) and to-do list.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18755 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-10 08:39:27 +00:00
Chris Lattner
b4a400af2e Turn on ipsccp by default instead of simple IPCP 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18753 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-10 08:03:43 +00:00
Chris Lattner
59acc7d4ef This is the initial implementation of IPSCCP, as requested by Brian. 
This implements SCCP/ipsccp-basic.ll, rips apart Olden/mst (as described in
PR415), and does other nice things.

There is still more to come with this, but it's a start.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18752 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-10 08:02:06 +00:00
Chris Lattner
3c05176526 New prototype 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18751 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-10 07:55:01 +00:00
Chris Lattner
41c6861609 New testcase 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18750 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-10 07:54:51 +00:00
Brian Gaeke
ce63005ac1 Emit correct prototype for __builtin_alloca on V8. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18745 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-10 05:44:45 +00:00
Alkis Evlogimenos
9913e59678 Fix writer to properly quote label names when they don't contain 
simple characters.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18744 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-10 05:41:10 +00:00