Owen Anderson
3987f8e1ac
Use the -enable-pre flag so this test doesn't fail.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52784 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-26 17:03:28 +00:00
Chris Lattner
aa0bf52625
Fix PR2488, a case where we deleted stack restores too aggressively.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52702 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-25 05:59:28 +00:00
Dan Gohman
8dbe7f832e
Revert 52645, the loop unroller changes. It caused a regression in 252.eon.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52688 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-24 20:44:42 +00:00
Matthijs Kooijman
1d9a277761
Commit the new DeadArgElim pass again, this time with the gcc bootstrap failures fixed.
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Also add a testcase to reproduce the gcc bootstrap failure in very much reduced form.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52677 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-24 16:30:26 +00:00
Dan Gohman
55e283c71e
Revamp the loop unroller, extending it to correctly update PHI nodes
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in the presence of out-of-loop users of in-loop values and the trip
count is not a known multiple of the unroll count, and to be a bit
simpler overall. This fixes PR2253.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52645 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-23 21:29:41 +00:00
Dan Gohman
cbfe5bbe88
Improve LSR's dead-phi detection to handle use-def cycles
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with more than two nodes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52617 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-22 20:44:02 +00:00
Chris Lattner
963a97f1a3
Fix PR2369 by making scalarrepl more careful about promoting
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structures. Its default threshold is to promote things that are
smaller than 128 bytes, which is sane. However, it is not sane
to do this for things that turn into 128 *registers*. Add a cap
on the number of registers introduced, defaulting to 128/4=32.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52611 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-22 17:46:21 +00:00
Eli Friedman
5c1f172213
Fix for PR2479: correctly optimize expressions like (a > 13) & (a ==
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15).
See also PR1800, which is about the signed case.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52608 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-21 23:36:13 +00:00
Duncan Sands
befc9c16fa
This file is empty.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52596 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-21 20:26:50 +00:00
Evan Cheng
9f99b7c595
Back out Matthijs' DAE patches. It's miscompiling gcc driver.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52570 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-21 00:31:44 +00:00
Matthijs Kooijman
63691f13b6
Add testcase that checks that DeadArgElim doesn't touch stuff it shouldn't touch.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52540 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-20 15:38:22 +00:00
Matthijs Kooijman
c95e44b4e0
Recommit r52459, rewriting of the dead argument elimination pass.
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This is a fixed version that no longer uses multimap::equal_range, which
resulted in a pointer invalidation problem.
Also, DAE::InspectedFunctions was not really necessary, so it got removed.
Lastly, this version no longer applies the extra arg hack on functions who did
not have any arguments to start with.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52532 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-20 09:36:16 +00:00
Chris Lattner
2de3fec61c
Fix PR2471, which is a bug involving an invalid promotion from a conditional load.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52525 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-20 05:12:56 +00:00
Matthijs Kooijman
3d2ff5f939
Modify some ipconstprop tests to also test with invokes.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52491 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-19 09:27:44 +00:00
Owen Anderson
93d606a9b3
Remove this test until the corresponding patch is reapplied because it's causing make check to crash for some people.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52473 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-18 22:37:31 +00:00
Owen Anderson
b230372437
Add local PRE to GVN. This only operates in cases where it would not increase code size, namely when the instantiated expression
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would only need to be created in one predecessor.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52471 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-18 21:41:49 +00:00
Matthijs Kooijman
ca85d65277
Rewrite the DeadArgumentElimination pass, to use a more explicit tracking of
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dependencies between return values and/or arguments. Also make the handling of
arguments and return values the same.
The pass now looks properly inside returned structs, but only at the first
level (ie, not inside nested structs).
Also add a testcase for testing various variations of (multiple) dead rerturn
values.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52459 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-18 11:12:53 +00:00
Matthijs Kooijman
c2afe89019
Reapply r52397 (make IPConstProp promote returned arguments), but fixed this
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time. Sorry for the trouble!
This time, also add a testcase, which I should have done in the first place...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52455 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-18 08:30:37 +00:00
Matthijs Kooijman
8b0fcf38ef
Reapply r52396, it was unrelated to the breakage (that was caused by r52397, my
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commit after this).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52453 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-18 08:09:27 +00:00
Chris Lattner
0521e3cdc1
implement some simple bswap optimizations, rdar://5992453
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52442 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-18 04:33:20 +00:00
Chris Lattner
a2eec61607
temporarily revert this testcase since its patch was reverted.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52441 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-18 04:03:23 +00:00
Chris Lattner
8114b718c9
make truncate/sext elimination capable of changing phi's. This
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implements rdar://6013816 and the testcase in Transforms/InstCombine/sext-misc.ll.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52440 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-18 04:00:49 +00:00
Devang Patel
64cd658223
Preserve dominance frontier while trivially unswitching loop.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52438 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-18 02:16:38 +00:00
Matthijs Kooijman
906e423724
Learn IPConstProp to look at individual return values and propagate them
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individually.
Also learn IPConstProp how returning first class aggregates work, in addition
to old style multiple return instructions.
Modify the return-constants testscase to confirm this behaviour.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52396 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-17 12:02:52 +00:00
Dan Gohman
9b93dd1f1a
Refine the change in r52258 for avoiding use-before-def conditions
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when changing the stride of a comparison so that it's slightly
more precise, by having it scan the instruction list to determine
if there is a use of the condition after the point where the
condition will be inserted.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52371 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-16 22:34:15 +00:00
Matthijs Kooijman
d47e6aeb93
Make testcase check for extractvalue instead of extractelement.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52317 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-16 13:03:44 +00:00
Matthijs Kooijman
cdbada613e
Store the result of multiple identical run lines in a temporary file.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52314 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-16 12:21:25 +00:00
Wojciech Matyjewicz
8a08769bad
Fix PR2434. When scanning for exising binary operator to reuse don't
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take into account the instrucion pointed by InsertPt. Thanks to it,
returning the new value of InsertPt to the InsertBinop() caller can be
avoided. The bug was, actually, in visitAddRecExpr() method which wasn't
correctly handling changes of InsertPt. There shouldn't be any
performance regression, as -gvn pass (run after -indvars) removes any
redundant binops.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52291 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-15 19:07:39 +00:00
Eli Friedman
6100119620
Remove unnecessary target lines.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52261 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-13 22:12:16 +00:00
Eli Friedman
6783cdcbd2
Remove unnecessary target lines.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52260 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-13 22:10:32 +00:00
Eli Friedman
6903a24f32
Don't skip over instructions other than loads that might read memory
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when trying to sink stores.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52259 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-13 22:02:12 +00:00
Dan Gohman
e562b1725e
Protect ChangeCompareStride from situations in which it is possible
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for it to generate use-before-def IR, such as in this testcase.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52258 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-13 21:43:41 +00:00
Eli Friedman
66fe80aa57
Make sure SimplifyStoreAtEndOfBlock doesn't mess with loops; the
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structure checks are incorrect if the blocks aren't distinct.
Fixes PR2435.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52257 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-13 21:17:49 +00:00
Evan Cheng
933b5065e5
Fix some tests.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52245 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-12 21:23:38 +00:00
Evan Cheng
0d0ca8572f
Revert 52223.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52243 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-12 20:55:39 +00:00
Matthijs Kooijman
ca9bcb0fda
Add line continuation character so the avoid dup loop header test actually runs.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52228 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-12 08:49:04 +00:00
Evan Cheng
bb318c073e
Avoid duplicating loop header which leads to unnatural loops (and just seem like general badness to me, likely to cause code explosion).
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Patch by Florian Brandner.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52223 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-11 19:07:54 +00:00
Matthijs Kooijman
a9012eca1a
Teach instruction combining about the extractvalue. It can succesfully fold
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useless insert-extract chains, similar to how it folds them for vectors.
Add a testcase for this.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52217 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-11 14:05:05 +00:00
Matthijs Kooijman
61d858e3f0
Ignore stderr for some more tests that expect warnings there.
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This fixes 2 testcases.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52184 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-10 16:13:38 +00:00
Matthijs Kooijman
888fa33cfb
Fix some escaping and quoting in RUN lines, mainly involving { and <. In two
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cases quoting of <{ didn't work out, so I changed the grep to check for }>
instead.
This fixes 7 testcases that were not properly running before.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52182 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-10 16:04:47 +00:00
Matthijs Kooijman
7361f63b25
Let some more tests ignore expected output on stderr.
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Also, use > %t instead of -o %t for output in one test since that also works
when %t already exists.
This fixes 6 testcases.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52178 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-10 15:04:14 +00:00
Dan Gohman
9eb698b96d
Fix two more not-grep tests that were missing llvm-dis.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52159 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-09 22:36:45 +00:00
Duncan Sands
eddc8f1f8b
Test that prune-eh doesn't make deductions based
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on bodies of functions with weak linkage.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52141 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-09 11:28:41 +00:00
Chris Lattner
313f0e63f7
lower calls to abs to inline code, PR2337
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52138 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-09 08:26:51 +00:00
Chris Lattner
18d73c206e
Fix PR2411, where ip constant prop would propagate the
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result of a weak function.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52137 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-09 07:58:07 +00:00
Chris Lattner
7d8ab4efbc
Limit the icmp+phi merging optimization to the cases where it is profitable:
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don't make i1 phis when it won't be possible to eliminate them.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52097 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-08 20:52:11 +00:00
Evan Cheng
4d09efd7b8
Speculatively execute a block when the the block is the then part of a triangle shape and it contains a single, side effect free, cheap instruction. The branch is eliminated by adding a select instruction. i.e.
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Turn
BB:
%t1 = icmp
br i1 %t1, label %BB1, label %BB2
BB1:
%t3 = add %t2, c
br label BB2
BB2:
=>
BB:
%t1 = icmp
%t4 = add %t2, c
%t3 = select i1 %t1, %t2, %t3
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52073 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-07 08:52:29 +00:00
Evan Cheng
cce302fded
Fix run line.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52072 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-07 08:40:16 +00:00
Zhou Sheng
b73afcf6dc
Add a test case for opt -instcombine bug fix in revision 52003.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52004 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-05 14:25:11 +00:00
Matthijs Kooijman
02518140ac
Learn ScalarReplAggregrates how stores and loads of first class aggregrates
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work and how to replace them into individual values. Also, when trying to
replace an aggregrate that is used by load or store with a single (large)
integer, don't crash (but don't replace the aggregrate either).
Also adds a testcase for both structs and arrays.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51997 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-05 12:51:53 +00:00