Chris Lattner
a92076d475
New testcase that crashes licm.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20829 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-25 05:49:13 +00:00
Chris Lattner
70ac2dcb84
Fix a bug where LICM was not updating AA information properly when sinking
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a pointer value out of a loop causing it to be duplicated.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20828 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-25 00:22:36 +00:00
Chris Lattner
20da24c4b9
remove a debugging timer.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20827 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-25 00:06:09 +00:00
Chris Lattner
b2dbdc1301
Two changes here:
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1. Instead of copying Local graphs to the BU graphs to start with, use
spliceFrom to do the job (which is constant time in this case). On
176.gcc, this chops off .17s from the bu pass.
2. When building SCC graphs, simplify the logic and use spliceFrom to
do the heavy lifting, instead of cloneInto/delete. This slices
another .14s off 176.gcc.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20826 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-25 00:05:04 +00:00
Chris Lattner
ce7068d378
Make the spliceFrom case where one graph is completely empty be constant time.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20825 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-25 00:02:41 +00:00
Chris Lattner
5734e4331e
add a new DSGraph::spliceFrom method, which violently takes the content of
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one graph and plops it into another, without breaking a sweat.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20824 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-24 23:46:04 +00:00
Chris Lattner
487cd15fdb
add new spliceFrom methods.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20823 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-24 23:45:20 +00:00
Nate Begeman
9e3e1b5d44
Implement next round of Pattern ISel fixes
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1. void returns
2. multiplies
3. calls
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20822 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-24 23:35:30 +00:00
Nate Begeman
7ca541b75a
Fix an incorrect argument being passed to BuildMI for indirect calls.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20821 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-24 23:34:38 +00:00
Chris Lattner
4da120e5d6
This replaces the correct but slow code with a more aggressive scc-finder
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based approach to find globals and call sites that need to be copied. This
speeds up the BU pass on 176.gcc from 22s back up to 2.3s. Not as good
as 1.5s, but at least it's correct :)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20820 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-24 23:06:02 +00:00
Chris Lattner
09adbbc99e
only look at successors of globals. This gets us down to "only" 22s in the
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bu pass for 176.gcc
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20818 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-24 21:17:27 +00:00
Chris Lattner
d8642125e4
Unfortunately, a previous patch was not safe. Revert it, reimplement
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something correct. Unfortunately this takes 176.gcc's BU phase back
up to 29s from 1.5. This fixes DSGraph/2005-03-24-Global-Arg-Alias.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20817 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-24 21:07:47 +00:00
Nate Begeman
2daec45751
Commit Gabor Greif's patch to use iterators in lowering intrinsics.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20816 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-24 20:07:16 +00:00
Chris Lattner
0d397bd437
don't bother |'ing in 0's
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20815 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-24 18:42:51 +00:00
Chris Lattner
d94b4d5b9c
be more aggressive about incompleteness marking
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20814 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-24 18:42:28 +00:00
Chris Lattner
4e59c642c8
new testcase that DS-AA is causing to be miscompiled.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20813 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-24 17:57:43 +00:00
Chris Lattner
1bcb9abb30
eliminate dead variables, patch contributed by Gabor Greif!
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20812 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-24 17:32:20 +00:00
Nate Begeman
5e9666129a
Implement more of the PPC32 Pattern ISel:
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1) dynamic stack alloc
2) loads
3) shifts
4) subtract
5) immediate form of add, and, or, xor
6) change flag from -pattern-isel to -enable-ppc-pattern-isel
Remove dead arguments from getGlobalBaseReg in the simple ISel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20810 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-24 06:28:42 +00:00
Chris Lattner
246fa6316d
Fix silly "no newline at end of file" warning
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20809 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-24 06:16:18 +00:00
Chris Lattner
26bc78ed10
Fix compilation errors, patch contributed by the fabulous Bill Wendling!
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20808 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-24 05:13:53 +00:00
Chris Lattner
3c61f70dc1
fix a compilation error, patch contributed by Bill Wendling!
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20807 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-24 05:12:48 +00:00
Nate Begeman
a9795f81e9
Addition of the PPC32 Pattern ISel. While it is far from complete, it will
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be brought up to parity with the current simple ISel in the coming days.
Currently, -pattern-isel is required to trigger it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20805 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-24 04:41:43 +00:00
Nate Begeman
85fdeb233e
Remove comments that are now meaningless from the pattern ISels, at Chris's
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request.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20804 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-24 04:39:54 +00:00
Chris Lattner
c5132e65a6
Fix a crash while promoting a value out of a loop from a global variable
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when using ds-aa
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20802 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-24 04:22:04 +00:00
Chris Lattner
7d671b88e8
teach ds-aa about mod/ref for external function calls.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20801 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-24 03:04:50 +00:00
Chris Lattner
62da315c85
Simplify dead code into a fixme :)
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20800 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-24 02:41:19 +00:00
Chris Lattner
c4417f98e5
fix a compiler crash in runtime/libprofile
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20799 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-24 01:22:52 +00:00
Chris Lattner
f5eaf3c62c
wrap a long line
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20797 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-23 23:51:12 +00:00
Chris Lattner
ec6518ddc2
If we are calling an external function, chain to another AA to potentially
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decide, don't just immediately give up.
This implements GlobalsModRef/chaining-analysis.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20796 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-23 23:49:47 +00:00
Chris Lattner
e04d51f4a5
GlobalMR should be able to analyze this function.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20795 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-23 23:48:56 +00:00
Chris Lattner
8eec644862
if a function doesn't access memory at all, it definitely doesn't read it.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20794 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-23 23:27:34 +00:00
Chris Lattner
8cfd24df54
Make this more efficient by only making one virtual method call.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20793 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-23 23:26:58 +00:00
Chris Lattner
d433bde071
Make this a bit more aggressive
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20792 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-23 22:06:41 +00:00
Chris Lattner
65512d2525
a hack to allow count-aa to work with ds-aa :(
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20791 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-23 21:59:34 +00:00
Chris Lattner
cf9f20189f
Add two options to allow -count-aa to print queries either (1) all queries,
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or (2) only queries that are not successful (e.g. return may alias)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20790 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-23 21:59:07 +00:00
Misha Brukman
b8190e6b30
Fix grammar
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20789 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-23 21:14:33 +00:00
Chris Lattner
1f309c1a4e
enable -debug-only=licm
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20788 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-23 21:00:12 +00:00
Chris Lattner
c14f59cb72
turn a dead conditional into an assert.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20787 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-23 20:12:08 +00:00
Chris Lattner
e3f1d8a525
Totally gut mergeInGraph. There is absolutely no reason to be merging
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global roots in from callees to callers. The BU graphs do not have accurate
globals information and all of the clients know it. Instead, just make sure
the GG is up-to-date, and they will be perfectly satiated.
This speeds up the BU pass on 176.gcc from 5.5s to 1.5s, and Loc+BU+TD
from 7s to 2.7s.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20786 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-23 20:08:59 +00:00
Chris Lattner
eb39492deb
wrap a long line
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20785 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-23 16:43:11 +00:00
Andrew Lenharth
cc59ed5379
don't lie to the register allocator
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20784 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-23 15:20:01 +00:00
Chris Lattner
943814bb01
Make -steens-aa more conservative (aka correct) by making sure to obey
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incompleteness flags.
Make it more aggressive by taking field sensitive information into
account.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20781 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-23 01:48:09 +00:00
Tanya Lattner
9532ab9839
Added alias analysis.
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Fixed many many bugs.
This now works on almost all Singlesource , and most of MultiSource.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20780 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-23 01:47:20 +00:00
Chris Lattner
2f72f9462b
implement Analysis/DSGraph/field-sensitive.ll
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20779 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-23 01:47:19 +00:00
Chris Lattner
ad46cf0282
new testcase to verify that we have field sensitive alias analysis info. This
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test cannot be satisfied without interprocedural information.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20778 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-23 01:46:59 +00:00
Chris Lattner
7c61b7b6ea
make sure this test tests the intended target.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20777 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-23 01:32:03 +00:00
Chris Lattner
60cd9558ba
don't crash in some bad cases.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20776 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-23 01:29:26 +00:00
Chris Lattner
1e9d1475bc
Several changes here:
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1. Increase max node size from 64->256 to avoid collapsing an important
structure in 181.mcf
2. If we have multiple calls to an indirect call node with an indirect
callee, fold these call nodes together, to avoid DSA turning apoc into
a flaming fireball of death when analyzing 176.gcc.
With this change, 176.gcc now takes ~7s to analyze for loc+bu+td, with
5.7s of that in the BU pass.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20775 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-22 23:54:52 +00:00
Chris Lattner
c7c6a864c0
We might as well check the TD graphs as well, even though they are fine.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20774 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-22 22:11:22 +00:00
Chris Lattner
9547adef58
Mark external globals incomplete in the BU Globals graph, fixing
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Analysis/DSGraph/2005-03-22-IncompleteGlobal.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20773 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-22 22:10:22 +00:00