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1135 Commits

Author SHA1 Message Date
Dan Gohman
f9a77b77c2 Revert r70645 for now; it's causing a variety of regressions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70661 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 05:46:20 +00:00
Dan Gohman
db6fa29641 Convert ScalarEvolution to use CallbackVH for its internal map. This 
makes ScalarEvolution::deleteValueFromRecords, and it's code that
subtly needed to be called before ReplaceAllUsesWith, unnecessary.

It also makes ValueDeletionListener unnecessary.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70645 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-02 21:19:20 +00:00
Dan Gohman
afc36a9520 Previously, RecursivelyDeleteDeadInstructions provided an option 
of returning a list of pointers to Values that are deleted. This was
unsafe, because the pointers in the list are, by nature of what
RecursivelyDeleteDeadInstructions does, always dangling. Replace this
with a simple callback mechanism. This may eventually be removed if
all clients can reasonably be expected to use CallbackVH.

Use this to factor out the dead-phi-cycle-elimination code from LSR
utility function, and generalize it to use the
RecursivelyDeleteTriviallyDeadInstructions utility function.

This makes LSR more aggressive about eliminating dead PHI cycles;
adjust tests to either be less trivial or to simply expect fewer
instructions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70636 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-02 18:29:22 +00:00
Owen Anderson
7db2789251 Real fix for PR3549, by using caching for predecessor counts in addition to the predecessors themselves. This halves the time 
to optimize the testcase, beyond what my previous patch did.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69792 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-22 08:50:12 +00:00
Owen Anderson
68fbd735f1 Use PredIteratorCache in LCSSA, which gives a 37% overall speedup on the testcase from PR3549. More improvements to come. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69788 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-22 08:09:13 +00:00
Chris Lattner
41b1a489f5 use predicate instead of hand-rolled loop 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69752 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-21 23:37:18 +00:00
Jim Grosbach
46445389d3 remove trailing whitespace 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69402 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-17 23:30:55 +00:00
Eli Friedman
bde6fda729 Fix for PR3944: make mem2reg O(N) instead of O(N^2) in the number of 
incoming edges for a block with many predecessors.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69312 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-16 21:40:28 +00:00
Devang Patel
517576d6f9 While inlining, clone llvm.dbg.func.start intrinsic and adjust 
llvm.dbg.region.end instrinsic. This nested llvm.dbg.func.start/llvm.dbg.region.end pair now enables DW_TAG_inlined_subroutine support in code generator.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69118 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-15 00:17:06 +00:00
Devang Patel
28c531cdbb Update call graph after inlining invoke. 
Patch by Jay Foad.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68120 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-31 17:36:12 +00:00
Dan Gohman
f871ccb853 Now that errs() is properly non-buffered, there's no need to 
explicitly flush it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@67526 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-23 15:57:19 +00:00
Duncan Sands
64da9409cb Factorize out a concept - no functionality change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@67454 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-21 21:27:31 +00:00
Duncan Sands
ab6b226978 Don't load values out of global constants with weak 
linkage: the value may be replaced with something
different at link time.  (Frontends that want to
allow values to be loaded out of weak constants can
give their constants weak_odr linkage).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@67407 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-20 21:53:29 +00:00
Dale Johannesen
f33b1103a1 Fix comment typo. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@67307 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-19 17:23:29 +00:00
Zhou Sheng
16767c6b49 Revert my previous change on Local.cpp, instead, fix the bug on scalarrepl. 
If the instruction has no users, it is also not only used by debug info 
and should not be deleted.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@67194 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-18 10:13:08 +00:00
Zhou Sheng
df95a2f6a9 Fix a bug. 
If I->use_empty(), this method should return false.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@67180 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-18 07:56:13 +00:00
Bill Wendling
9a507cd915 Revert r66920. It was causing failures in the self-hosting buildbot (in release 
mode).

Running /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/test/BugPoint/dg.exp ...
FAIL: /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/test/BugPoint/crash-narrowfunctiontest.ll
Failed with signal(SIGBUS) at line 1
while running: bugpoint /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/test/BugPoint/crash-narrowfunctiontest.ll -bugpoint-crashcalls -silence-passes > /dev/null
0   bugpoint          0x0035dd25 llvm::sys::SetInterruptFunction(void (*)()) + 85
1   bugpoint          0x0035e382 llvm::sys::RemoveFileOnSignal(llvm::sys::Path const&, std::string*) + 706
2   libSystem.B.dylib 0x92f112bb _sigtramp + 43
3   libSystem.B.dylib 0xffffffff _sigtramp + 1829694831
4   bugpoint          0x00021d1c main + 92
5   bugpoint          0x00002106 start + 54
6   bugpoint          0x00000004 start + 18446744073709543220
Stack dump:
0.    Program arguments: bugpoint /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/test/BugPoint/crash-narrowfunctiontest.ll -bugpoint-crashcalls -silence-passes 

FAIL: /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/test/BugPoint/misopt-basictest.ll
Failed with signal(SIGBUS) at line 1
while running: bugpoint /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/test/BugPoint/misopt-basictest.ll -dce -bugpoint-deletecalls -simplifycfg -silence-passes
0   bugpoint          0x0035dd25 llvm::sys::SetInterruptFunction(void (*)()) + 85
1   bugpoint          0x0035e382 llvm::sys::RemoveFileOnSignal(llvm::sys::Path const&, std::string*) + 706
2   libSystem.B.dylib 0x92f112bb _sigtramp + 43
3   libSystem.B.dylib 0xffffffff _sigtramp + 1829694831
4   bugpoint          0x00021d1c main + 92
5   bugpoint          0x00002106 start + 54
6   bugpoint          0x00000006 start + 18446744073709543222
Stack dump:
0.    Program arguments: bugpoint /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/test/BugPoint/misopt-basictest.ll -dce -bugpoint-deletecalls -simplifycfg -silence-passes 

FAIL: /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/test/BugPoint/remove_arguments_test.ll
Failed with signal(SIGBUS) at line 1
while running: bugpoint /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/test/BugPoint/remove_arguments_test.ll  -bugpoint-crashcalls -silence-passes
0   bugpoint          0x0035dd25 llvm::sys::SetInterruptFunction(void (*)()) + 85
1   bugpoint          0x0035e382 llvm::sys::RemoveFileOnSignal(llvm::sys::Path const&, std::string*) + 706
2   libSystem.B.dylib 0x92f112bb _sigtramp + 43
3   libSystem.B.dylib 0xffffffff _sigtramp + 1829694831
4   bugpoint          0x00021d1c main + 92
5   bugpoint          0x00002106 start + 54
Stack dump:
0.    Program arguments: bugpoint /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/test/BugPoint/remove_arguments_test.ll -bugpoint-crashcalls -silence-passes 

--- Reverse-merging (from foreign repository) r66920 into '.':
U    include/llvm/Support/CallSite.h
U    include/llvm/Instructions.h
U    lib/Analysis/IPA/GlobalsModRef.cpp
U    lib/Analysis/IPA/Andersens.cpp
U    lib/Bitcode/Writer/BitcodeWriter.cpp
U    lib/VMCore/Instructions.cpp
U    lib/VMCore/Verifier.cpp
U    lib/VMCore/AsmWriter.cpp
U    lib/Transforms/Utils/LowerInvoke.cpp
U    lib/Transforms/Scalar/SimplifyCFGPass.cpp
U    lib/Transforms/IPO/PruneEH.cpp
U    lib/Transforms/IPO/DeadArgumentElimination.cpp



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66953 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-13 21:15:59 +00:00
Gabor Greif
b14cda3c0d Second installment of "BasicBlock operands to the back" 
changes.

For InvokeInst now all arguments begin at op_begin().
The Callee, Cont and Fail are now faster to get by
access relative to op_end().

This patch introduces some temporary uglyness in CallSite.
Next I'll bring CallInst up to a similar scheme and then
the uglyness will magically vanish.

This patch also exposes all the reliance of the libraries
on InvokeInst's operand ordering. I am thinking of taking
care of that too.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66920 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-13 18:27:29 +00:00
Dale Johannesen
990afedb3a Fix one more place where debug info affected 
codegen (speculative execution).



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66859 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-13 01:05:24 +00:00
Dale Johannesen
8483e54837 Previous debug info fix to this code wasn't quite 
right; did the wrong thing when there are exactly 11
non-debug instructions, followed by debug info.
Remove a FIXME since it's apparently been fixed along the way.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66840 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-12 23:18:09 +00:00
Dale Johannesen
c81f5445a7 There already was a class to force deterministic 
sorting of ConstantInt's; unreinvent wheel.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66824 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-12 21:01:11 +00:00
Dale Johannesen
80b8a62fda Another missing check for debug intrinsics. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66800 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-12 17:42:45 +00:00
Dale Johannesen
1379cadf8d Allow for switch values bigger than 64 bits. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66751 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-12 01:20:06 +00:00
Dale Johannesen
a9537cf3fc Fix some nondeterministic behavior when forwarding 
from a switch table.  Multiple table entries that
branch to the same place were being sorted by the
pointer value of the ConstantInt*; changed to sort
by the actual value of the ConstantInt.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66749 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-12 01:00:26 +00:00
Dale Johannesen
8aa90feb3d Don't consider debug intrinsics when checking 
whether a callee to be inlined is a leaf.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66588 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-10 22:20:02 +00:00
Devang Patel
9200c89968 Ignore dbg info, while estimating size of jump through block. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66554 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-10 18:00:05 +00:00
Evan Cheng
8c7848f17f If a function is marked alwaysinline, it must be inlined (possibly for correctness). Do so even if the callee has dynamic alloca and the caller doesn't. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66539 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-10 07:57:50 +00:00
Duncan Sands
667d4b8de6 Introduce new linkage types linkonce_odr, weak_odr, common_odr 
and extern_weak_odr.  These are the same as the non-odr versions,
except that they indicate that the global will only be overridden
by an *equivalent* global.  In C, a function with weak linkage can
be overridden by a function which behaves completely differently.
This means that IP passes have to skip weak functions, since any
deductions made from the function definition might be wrong, since
the definition could be replaced by something completely different
at link time.   This is not allowed in C++, thanks to the ODR
(One-Definition-Rule): if a function is replaced by another at
link-time, then the new function must be the same as the original
function.  If a language knows that a function or other global can
only be overridden by an equivalent global, it can give it the
weak_odr linkage type, and the optimizers will understand that it
is alright to make deductions based on the function body.  The
code generators on the other hand map weak and weak_odr linkage
to the same thing.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66339 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-07 15:45:40 +00:00
Dale Johannesen
3a56d14641 Fix another case where debug info interferes with 
an optimization.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66288 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-06 21:08:33 +00:00
Devang Patel
06b1e67d44 While hoisting instruction to speculatively execute simple bb, ignore dbg intrinsics. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66255 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-06 06:00:17 +00:00
Dale Johannesen
2511abf6e7 Tweak the check for promotable alloca's to handle 
debug intrinsics correctly.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66225 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-06 00:42:50 +00:00
Devang Patel
c79e118247 Add "check/remove dbg var" helper routines. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66223 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-06 00:19:37 +00:00
Dale Johannesen
0744f09efc Revert unintended commmit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66001 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-04 02:09:48 +00:00
Dale Johannesen
d9c05d7711 Skip ptr-to-ptr bitcasts when counting in another case. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66000 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-04 02:06:53 +00:00
Dale Johannesen
cdb16aa5ab Always skip ptr-to-ptr bitcasts when counting, 
per Chris' suggestion.  Slightly faster.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65999 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-04 01:53:05 +00:00
Dale Johannesen
127a7936de Marking debug info intrinsics as not touching memory 
caused them to be considered trivially dead.  Fix this.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65979 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-03 23:30:00 +00:00
Dale Johannesen
4ded40a44d Instruction counters must skip the bitcasts that 
feed into llvm.dbg.declare nodes, as well as
the debug directives themselves.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65976 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-03 22:36:47 +00:00
Dale Johannesen
4945c65784 When removing a store to an alloca that has only one 
use, check also for the case where it has two uses,
the other being a llvm.dbg.declare.  This is needed so
debug info doesn't affect codegen.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65970 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-03 21:26:39 +00:00
Bill Wendling
1c85503e38 Remove accidental check-ins in r65960. :-( 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65961 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-03 19:25:16 +00:00
Bill Wendling
3aaf5d9933 Use > instead of >=. We want to promote aggregates of 128-bytes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65960 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-03 19:18:49 +00:00
Dan Gohman
0f8b53f19d Fix a bunch of Doxygen syntax issues. Escape special characters, 
and put @file directives on their own comment line.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65920 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-03 02:55:14 +00:00
Dale Johannesen
bd8e650876 When sinking an insn in InstCombine bring its debug 
info with it.
Don't count debug info insns against the scan maximum
in FindAvailableLoadedValue (lest they affect codegen).



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65910 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-03 01:09:07 +00:00
Nick Lewycky
7569af769e Fix compiler warning about uninitialized variables. No functional change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65620 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-27 06:29:31 +00:00
Zhou Sheng
a8d57fe96b Ignore dbg info intrinsics when folding conditional branch to 
conditional branch predecessors.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65509 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-26 06:56:37 +00:00
Zhou Sheng
9a7c743fc0 Don't block basic block with only SwitchInst to fold into predecessors. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65456 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-25 15:34:27 +00:00
Devang Patel
5622f07a21 While folding unconditional return move DbgRegionEndInst into the predecessor, instead of removing it. This fixes following tests from llvmgcc42 testsuite. 
gcc.c-torture/execute/20000605-3.c
gcc.c-torture/execute/20020619-1.c
gcc.c-torture/execute/20030920-1.c
gcc.c-torture/execute/loop-ivopts-1.c



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65353 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-24 00:05:16 +00:00
Mon P Wang
b0000c376c Changed option name from inline-threshold to basic-inline-threshold because 
inline-threshold option is used by the inliner.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65309 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-23 07:07:56 +00:00
Evan Cheng
b0ea08066c Add AddrModeMatcher.cpp 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65228 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-21 07:05:11 +00:00
Evan Cheng
a1fd5b386d Factor address mode matcher out of codegen prepare to make it available to other passes, e.g. loop strength reduction. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65134 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-20 18:24:38 +00:00
Zhou Sheng
3f315eb5e0 Just roll back the previous change to -mem2reg. 
Will re-think about this according to Chris's comments.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65126 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-20 17:49:33 +00:00