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3169 Commits

Author SHA1 Message Date
Dan Gohman
10e7726e6c Fix the noalias checking so that it doesn't worry about 
an argument aliasing itself. Thanks Duncan!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105288 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-01 20:51:40 +00:00
Dan Gohman
dd05466ef4 Fix AliasDebugger to be aware of operand values too. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105012 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-28 22:31:51 +00:00
Dan Gohman
aec2a0dbce Add lint checks for function attributes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105009 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-28 21:43:57 +00:00
Dan Gohman
13ec30b6a1 Fix lint's memcpy and memmove checks, and its basic block traversal. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104970 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-28 17:44:00 +00:00
Dan Gohman
17d95965cb Detect self-referential values. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104957 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-28 16:45:33 +00:00
Stuart Hastings
8ffc42f8ea Revert 104841, 104842, 104876 due to buildbot failures. Radar 7424645. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104953 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-28 16:41:07 +00:00
Dan Gohman
078f8595b5 Eli pointed out that va_arg instruction result values don't 
reference the stack.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104951 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-28 16:34:49 +00:00
Dan Gohman
ff26d4e9ce Teach lint how to look through simple store+load pairs and other 
effective no-op constructs, to make it more effective on
unoptimized IR.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104950 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-28 16:21:24 +00:00
Dan Gohman
dd9344f3fa Move FindAvailableLoadedValue isSafeToLoadUnconditionally out of 
lib/Transforms/Utils and into lib/Analysis so that Analysis passes
can use them.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104949 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-28 16:19:17 +00:00
Dan Gohman
700012231d ConstantFoldConstantExpression can theoretically return null. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104948 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-28 16:12:08 +00:00
Dan Gohman
292fc87fe2 Add a lint check for returning the address of stack memory. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104936 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-28 04:33:42 +00:00
Stuart Hastings
aa66d2f48a Support for nested functions/classes in debug output. Radar 7424645. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104841 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-27 16:16:54 +00:00
Jakob Stoklund Olesen
8b3ca84a8d Avoid counting InlineAsm as a call - it prevents loop unrolling. 
PR7026
Patch by Pekka Jääskeläinen!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104780 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-26 22:40:28 +00:00
Dan Gohman
a0f7ff334f Fix Lint printing warnings multiple times. Remove the ErrorStr 
option from lintModule, which was an artifact from being
based on Verifier code.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104765 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-26 22:28:53 +00:00
Dan Gohman
882ddb492d Reinstate checking of stackrestore, with checking for both Read 
and Write, and add a comment explaining this.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104756 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-26 22:21:25 +00:00
Dan Gohman
749be11f4d Stackrestore is not a load. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104752 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-26 22:00:10 +00:00
Dan Gohman
df9c8bc569 Remove a TODO which isn't practical. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104748 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-26 21:50:41 +00:00
Dan Gohman
113b3e2c6e Implement checking of the tail keyword. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104744 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-26 21:46:36 +00:00
Devang Patel
6ed0ce3240 Rename variable. add comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104274 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-20 20:35:24 +00:00
Devang Patel
98e1cac52c Add support to preserve type info for the variables that are removed by the optimizer. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103798 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-14 21:01:35 +00:00
Nick Lewycky
9a1581b910 Clear CachedFunctionInfo upon Pass::releaseMemory. Because ValueMap will abort 
on RAUW of functions, this is a correctness issue instead of a mere memory
usage problem.


No testcase until the new MergeFunctions can land.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103653 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-12 21:48:15 +00:00
Dan Gohman
faa19c32a2 Fix whitespace in debug output to be consistent. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103422 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-10 20:07:44 +00:00
Devang Patel
a49d877290 Remove DIGlobal. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103325 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-07 23:19:07 +00:00
Devang Patel
47e2265a30 Add DINameSpace::Verify(). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103318 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-07 23:04:32 +00:00
Devang Patel
02f0dbd97a Verify variable directly. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103305 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-07 22:04:20 +00:00
Devang Patel
62077af40e Verify compile unit also. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103300 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-07 21:42:24 +00:00
Devang Patel
e9f8f5e600 Wrap const MDNode * inside DIDescriptor. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103295 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-07 20:54:48 +00:00
Devang Patel
ed66bf5125 Use overloaded operators instead of DIDescriptor::getNode() 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103276 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-07 18:19:32 +00:00
Devang Patel
2db49d797b Avoid DIDescriptor::getNode(). Use overloaded operators instead. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103272 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-07 18:11:54 +00:00
Dan Gohman
9a7063e7ee Add some words to this output to indicate what the numbers mean. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103264 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-07 16:39:27 +00:00
Dan Gohman
ef0b14593b Add a simple module-level debug info printer. It just sets up a 
DebugInfoFinder and iterates over all the contents calling print.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103262 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-07 16:22:32 +00:00
Dan Gohman
c014d0963e Fix the new print functions to call print instead of dump. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103261 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-07 16:17:22 +00:00
Dan Gohman
504043662c Convert the DebugInfo classes dump() methods into print(raw_ostream &) 
methods, and add dump functions implemented in terms of the print.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103254 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-07 15:30:29 +00:00
Dan Gohman
acd8cab843 Use the SCEVAddRecExpr::getPostIncExpr utility function instead 
of doing the same thing manually.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102997 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-04 01:12:27 +00:00
Dan Gohman
c0ed0091dc Fix a copy+pasto. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102996 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-04 01:11:15 +00:00
Devang Patel
01c5ff6437 Do not ignore debug loc attached with llvm.dbg.declare while collecting debug info used by a module. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102995 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-04 01:05:02 +00:00
Dan Gohman
deff621abd Use getConstant instead of getIntegerSCEV. The two are basically the 
same, now that getConstant has overloads consistent with ConstantInt::get.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102965 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-03 22:09:21 +00:00
Dan Gohman
f16c6803d7 Silence warnings about -1 being converted to an unsigned value. 
Also, pass true for isSigned even when creating constants for unsigned
comparisons, because the point is to create an all-ones constant,
rather than UINT64_MAX, even for integers wider than 64 bits.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102946 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-03 20:23:47 +00:00
Dan Gohman
34c3e36e63 Use isTrueWhenEqual and isFalseWhenEqual instead of assuming that 
SimplifyICmpOperands will simplify such cases to EQ or NE. This makes
the correcntess of the code independent on SimplifyICmpOperands doing
certain simplifications.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102927 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-03 18:00:24 +00:00
Dan Gohman
a189bae771 In ScalarEvolution::print, don't bother printing out the SCEVs for 
comparison instructions, since they aren't interesting, despite having
integer result types.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102925 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-03 17:03:23 +00:00
Dan Gohman
3abb69c07f In SimplifyICmpOperands, avoid needlessly swapping the operands in the 
case where both are addrecs in unrelated loops.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102924 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-03 17:00:11 +00:00
Dan Gohman
03557dc0ad Factor out the new <= and >= analysis code into SimplifyICmpOperands. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102922 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-03 16:35:17 +00:00
David Chisnall
752e259058 Added a variant of InlineCostAnalyzer::getInlineCost() that takes the called function as an explicit argument, for use when inlining function pointers. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102841 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-01 15:47:41 +00:00
Chris Lattner
bccb41afc8 fix PR5009 by making CGSCCPM realize that a call was devirtualized 
if an indirect call site was removed and a direct one was added, not
just if an indirect call site was modified to be direct.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102830 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-01 06:38:43 +00:00
Chris Lattner
6da12e6767 Implement rdar://6295824 and PR6724 with two tiny changes 
that can have a big effect :).  The first is to enable the
iterative SCC passmanager juice that kicks in when the
scc passmgr detects that a function pass has devirtualized
a call.  In this case, it will rerun all the passes it 
manages on the SCC, up to the iteration count limit (4). This
is useful because a function pass may devirualize a call, and
we want the inliner to inline it, or pruneeh to infer stuff
about it, etc.

The second patch is to add *all* call sites to the 
DevirtualizedCalls list the inliner uses.  This list is
about to get renamed, but the jist of this is that the 
inliner now reconsiders *all* inlined call sites as candidates
for further inlining.  The intuition is this that in cases 
like this:

f() { g(1); }     g(int x) { h(x); }

We analyze this bottom up, and may decide that it isn't 
profitable to inline H into G.  Next step, we decide that it is
profitable to inline G into F, and do so, which means that F 
now calls H.  Even though the call from G -> H may not have been
profitable to inline, the call from F -> H may be (in this case
because a constant allows folding etc).

In my spot checks, this doesn't have a big impact on code.  For
example, the LLC output for 252.eon grew from 0.02% (from
317252 to 317308) and 176.gcc actually shrunk by .3% (from 1525612
to 1520964 bytes).  252.eon never iterated in the SCC Passmgr,
176.gcc iterated at most 1 time.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102823 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-01 01:15:56 +00:00
Chris Lattner
4b7b42c831 Dan recently disabled recursive inlining within a function, but we 
were still inlining self-recursive functions into other functions.

Inlining a recursive function into itself has the potential to
reduce recursion depth by a factor of 2, inlining a recursive
function into something else reduces recursion depth by exactly 
1.  Since inlining a recursive function into something else is a
weird form of loop peeling, turn this off.

The deleted testcase was added by Dale in r62107, since then
we're leaning towards not inlining recursive stuff ever.  In any
case, if we like inlining recursive stuff, it should be done 
within the recursive function itself to get the algorithm 
recursion depth win.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102798 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-30 22:37:22 +00:00
Devang Patel
ccff812777 Attach AT_APPLE_optimized attribute to optimized function's debug info. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102743 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-30 19:38:23 +00:00
Dan Gohman
8833c32108 Set isSigned to true when creating an all-ones integer constant, even 
for unsigned purposes, so >64-bit integer values get a full all-ones
value.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102739 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-30 19:22:39 +00:00
Dan Gohman
b6fd0b481c Silence compiler warnings. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102734 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-30 19:21:13 +00:00
Dan Gohman
5b61b3818a Add lint checks for invalid uses of memory. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102733 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-30 19:05:00 +00:00