make sure that BranchInst::getSuccessor() does not assert in cast<>
even if the underlying operand is NULL. This may happen in debugging context
within opt with partial loop unrolling (see test/Transforms/LoopUnroll/partial.ll).
After this fix I can resubmit the (backed out) r63459:
* lib/VMCore/AsmWriter.cpp: use precise accessors.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64142 91177308-0d34-0410-b5e6-96231b3b80d8

Fix comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64137 91177308-0d34-0410-b5e6-96231b3b80d8

These function return 'void'. Don't have 'return' return anything.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64136 91177308-0d34-0410-b5e6-96231b3b80d8

fix typo, patch by Jonathan Brandmeyer!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64132 91177308-0d34-0410-b5e6-96231b3b80d8

Testcase for PR2437.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64131 91177308-0d34-0410-b5e6-96231b3b80d8

Re-enable machine sinking pass now that the coalescer bugs and the AnalyzeBrnach bug are fixed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64126 91177308-0d34-0410-b5e6-96231b3b80d8

Fix another case ShortenDeadCopySrcLiveRange is shortening too much. No test case possible since I don't know what to grep for. :-(

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64125 91177308-0d34-0410-b5e6-96231b3b80d8

Turns out AnalyzeBranch can modify the mbb being analyzed. This is a nasty
suprise to some callers, e.g. register coalescer. For now, add an parameter
that tells AnalyzeBranch whether it's safe to modify the mbb. A better
solution is out there, but I don't have time to deal with it right now.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64124 91177308-0d34-0410-b5e6-96231b3b80d8

Strip the LTO dylib.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64119 91177308-0d34-0410-b5e6-96231b3b80d8

Small fix for the 'strip' command. Do a list of .so files.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64112 91177308-0d34-0410-b5e6-96231b3b80d8

Eliminate a 'control reaches end of non-void function' warning.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64111 91177308-0d34-0410-b5e6-96231b3b80d8

Don't run 'strip' on files that aren't there.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64108 91177308-0d34-0410-b5e6-96231b3b80d8

Remove warnings about not being able to delete something. Don't run lipo on gccas, gccld, and llvm-config scripts.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64107 91177308-0d34-0410-b5e6-96231b3b80d8

mention rdynamic, PR3431, patch by Stein Roger Skafløtten!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64106 91177308-0d34-0410-b5e6-96231b3b80d8

Document llvm.umul.with.overflow indicating that it's badly broken and not intended for use.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64104 91177308-0d34-0410-b5e6-96231b3b80d8

Rename dg.exp to llvmc.exp. This is so I can ignore it during a make check if I want to.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64103 91177308-0d34-0410-b5e6-96231b3b80d8

80-column violation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64102 91177308-0d34-0410-b5e6-96231b3b80d8

Add a Sleep() function.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64101 91177308-0d34-0410-b5e6-96231b3b80d8

I can't type today apparently.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64097 91177308-0d34-0410-b5e6-96231b3b80d8

Add Emacs hints to Alarm.inc.

Also removes some trailing whitespace and fixes one 80-column violation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64094 91177308-0d34-0410-b5e6-96231b3b80d8

add a note.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64093 91177308-0d34-0410-b5e6-96231b3b80d8

fix typo

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64091 91177308-0d34-0410-b5e6-96231b3b80d8

fix typo

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64090 91177308-0d34-0410-b5e6-96231b3b80d8

reject void pointers with a nice error:

llvm-as: t.ll:2:15: pointers to void are invalid, use i8* instead
%X = type void*
              ^

instead of asserting and dying.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64089 91177308-0d34-0410-b5e6-96231b3b80d8

document pointer type constraints, PR3513

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64088 91177308-0d34-0410-b5e6-96231b3b80d8

The 'false.c' test must depend on llvm-g++.

Also, turn on Objective-C/C++ tests.
This should fix http://llvm.org/bugs/show_bug.cgi?id=3499.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64084 91177308-0d34-0410-b5e6-96231b3b80d8

Fix PR3486. Fix a bug in code that manually patch physical register live interval after its sub-register is coalesced with a virtual register.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64082 91177308-0d34-0410-b5e6-96231b3b80d8

Strengthen the previous check.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64076 91177308-0d34-0410-b5e6-96231b3b80d8

r64073 commit message is lost. Here it is:
Right now if the coalesced copy def is dead and its src is a kill, and that
there are now other uses within the live range, the coalescer would mark the
def of the source register as dead. But it should also check if there are
other kills which means the value has other uses not in the live range.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64075 91177308-0d34-0410-b5e6-96231b3b80d8

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64073 91177308-0d34-0410-b5e6-96231b3b80d8

Fixes from feedback.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64070 91177308-0d34-0410-b5e6-96231b3b80d8

Document the 'llvm.OP.with.overflow' intrinsics.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64066 91177308-0d34-0410-b5e6-96231b3b80d8

Mistakenly turned this on.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64065 91177308-0d34-0410-b5e6-96231b3b80d8

Revert r63999. It was breaking self-hosting builds.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64062 91177308-0d34-0410-b5e6-96231b3b80d8

testcase for r64049 of llvm-gcc.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64050 91177308-0d34-0410-b5e6-96231b3b80d8

Add missing break statements, fixing PR3503.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64040 91177308-0d34-0410-b5e6-96231b3b80d8

Instrcombine should not change load(cast p) to cast(load p) if the cast
changes the address space of the pointer.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64035 91177308-0d34-0410-b5e6-96231b3b80d8

Use getDebugLoc forwarder instead of getNode()->getDebugLoc.
No functional change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64026 91177308-0d34-0410-b5e6-96231b3b80d8

Revert 64023. make prefers GNUmakefile over makefile.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64024 91177308-0d34-0410-b5e6-96231b3b80d8

Move Apple style build makefiles to the top level. Just like llvmgcc42.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64023 91177308-0d34-0410-b5e6-96231b3b80d8

fix bugpoint url, patch by Pieter de Bie!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64022 91177308-0d34-0410-b5e6-96231b3b80d8

Constify TargetInstrInfo::EmitInstrWithCustomInserter, allowing
ScheduleDAG's TLI member to use const.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64018 91177308-0d34-0410-b5e6-96231b3b80d8

Change several SmallPtrSetImpl members from public to protected,
to make the encapsulation more clear.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64017 91177308-0d34-0410-b5e6-96231b3b80d8

Simplify some code by using blocks_begin(), blocks_end(), and
the iterator typedefs instead of handling the std::vector
directly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64016 91177308-0d34-0410-b5e6-96231b3b80d8

Add an API for strings with possible NULLs in the middle. Refactor the other
two AddString methods to use it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64005 91177308-0d34-0410-b5e6-96231b3b80d8

Insert space to avoid warning and make code more readable.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64003 91177308-0d34-0410-b5e6-96231b3b80d8

Free the buffer in the case where we don't create a module out of it, as
pointed out by Torok Edwin.

Remove trailing whitespaces.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64002 91177308-0d34-0410-b5e6-96231b3b80d8

Make SDNode constructors take a DebugLoc always.
Adjust derived classes to pass UnknownLoc where
a DebugLoc does not make sense.  Pick one of
DebugLoc and non-DebugLoc variants to survive
for all such classes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64000 91177308-0d34-0410-b5e6-96231b3b80d8

Enable machine sinking pass in non-fast mode.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63999 91177308-0d34-0410-b5e6-96231b3b80d8

Deleted one line too many.  oops.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63996 91177308-0d34-0410-b5e6-96231b3b80d8

Remove now-unused constructors.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63995 91177308-0d34-0410-b5e6-96231b3b80d8

Don't sink the instruction if TargetRegisterInfo::isSafeToMoveRegClassDefs doesn't think it's safe. This works around PR1911.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63994 91177308-0d34-0410-b5e6-96231b3b80d8

Needs this file too.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63993 91177308-0d34-0410-b5e6-96231b3b80d8

Get rid of the last non-DebugLoc versions of getNode!

Many targets build placeholder nodes for special operands, e.g.
GlobalBaseReg on X86 and PPC for the PIC base.  There's no
sensible way to associate debug info with these.  I've left
them built with getNode calls with explicit DebugLoc::getUnknownLoc operands.
I'm not too happy about this but don't see a good improvement;
I considered adding a getPseudoOperand or something, but it
seems to me that'll just make it harder to read.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63992 91177308-0d34-0410-b5e6-96231b3b80d8

Refactor some repeated logic into a separate function.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63989 91177308-0d34-0410-b5e6-96231b3b80d8

Make a comment a doxygen comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63988 91177308-0d34-0410-b5e6-96231b3b80d8

Constify operators.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63979 91177308-0d34-0410-b5e6-96231b3b80d8

Remove more non-DebugLoc getNode variants.  Use
getCALLSEQ_{END,START} to permit passing no DebugLoc
there.  UNDEF doesn't logically have DebugLoc; add
getUNDEF to encapsulate this.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63978 91177308-0d34-0410-b5e6-96231b3b80d8

And one more file.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63971 91177308-0d34-0410-b5e6-96231b3b80d8

Remove more non-DebugLoc versions of getNode.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63969 91177308-0d34-0410-b5e6-96231b3b80d8

Record debug location information in the Dwarf writer.

A simple test program shows that debugging works. :-)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63968 91177308-0d34-0410-b5e6-96231b3b80d8

Clear out the CurDebugLoc info when doing a 'clear' on the SDL object.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63967 91177308-0d34-0410-b5e6-96231b3b80d8

Add comparison operators to DebugLoc.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63966 91177308-0d34-0410-b5e6-96231b3b80d8

Split the locking out of JIT::runJITOnFunction so that callers
that already hold the lock can call an entry point that doesn't
re-acquire the lock.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63965 91177308-0d34-0410-b5e6-96231b3b80d8

Make Mutex's constructor explicit, and tidy up whitespace.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63963 91177308-0d34-0410-b5e6-96231b3b80d8

Use .size and .type on ELF systems; this helps tools that map
addresses to symbols.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63962 91177308-0d34-0410-b5e6-96231b3b80d8

Deallocate() methods now take a 'const void*' instead of a 'void *', matching observed behavior with how 'delete[]' can be used.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63956 91177308-0d34-0410-b5e6-96231b3b80d8

Eliminate remaining non-DebugLoc version of getTargetNode.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63951 91177308-0d34-0410-b5e6-96231b3b80d8

Rename SelectionDAGISel::Schedule to
SelectionDAGISel::CreateScheduler, and make it just create the
scheduler. Leave running the scheduler to the higher-level code.
This makes the higher-level code a little more explicit and
easier to follow, and will help enable some future refactoring.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63944 91177308-0d34-0410-b5e6-96231b3b80d8

Print globl directive for variables with external linkage (global variables).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63943 91177308-0d34-0410-b5e6-96231b3b80d8

Delete an unused member function.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63941 91177308-0d34-0410-b5e6-96231b3b80d8

We don't really need the abort here. This unbreak x86_64 linux build.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63940 91177308-0d34-0410-b5e6-96231b3b80d8

Move getPointerRegClass from TargetInstrInfo to TargetRegisterInfo.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63938 91177308-0d34-0410-b5e6-96231b3b80d8

Move ScheduleDAGSDNodes.h to be a private header. Front-ends
that previously included this header should include
SchedulerRegistry.h instead.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63937 91177308-0d34-0410-b5e6-96231b3b80d8

Add TargetInstrInfo::isSafeToMoveRegisterClassDefs. It returns true if it's safe to move an instruction which defines a value in the register class. Replace pre-splitting specific IgnoreRegisterClassBarriers with this new hook.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63936 91177308-0d34-0410-b5e6-96231b3b80d8

Change -1 => negative number.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63935 91177308-0d34-0410-b5e6-96231b3b80d8

Move ScheduleDAGInstrs.h to be a private header. Front-ends
that used this header to select a scheduling policy should
use SchedulerRegistry.h instead (llvm-gcc and clang were
updated a while ago).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63934 91177308-0d34-0410-b5e6-96231b3b80d8

Document the meaning of -1 for getCopyCost.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63933 91177308-0d34-0410-b5e6-96231b3b80d8

Tidy up the ScheduleDAG class definition a little. Make a few
more member functions protected, and group all the protected
members together.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63932 91177308-0d34-0410-b5e6-96231b3b80d8

Don't pass BitVectors by value, pass them by reference.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63931 91177308-0d34-0410-b5e6-96231b3b80d8

Correct strange whitespace.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63927 91177308-0d34-0410-b5e6-96231b3b80d8

Ignore DbgInfoIntrinsics.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63923 91177308-0d34-0410-b5e6-96231b3b80d8

fix PR3489, use bits instead of bytes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63916 91177308-0d34-0410-b5e6-96231b3b80d8

get rid of some non-DebugLoc getTargetNode variants.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63909 91177308-0d34-0410-b5e6-96231b3b80d8

Free the buffer.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63907 91177308-0d34-0410-b5e6-96231b3b80d8

Fix test. It produces unexpected code if sse4.1 is on.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63906 91177308-0d34-0410-b5e6-96231b3b80d8

Get rid of one more non-DebugLoc getNode and
its corresponding getTargetNode.  Lots of
caller changes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63904 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a crasher: we need to check that the function is non-null before using it!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63902 91177308-0d34-0410-b5e6-96231b3b80d8

Refactor my previous change to maintain the distinction between AliasAnalysis and BasicAliasAnalysis.  This involves some wider changes because it
folds away some never-used methods.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63900 91177308-0d34-0410-b5e6-96231b3b80d8

Ignore dbg intrinsics while propagating conditional expression info. Take 2.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63898 91177308-0d34-0410-b5e6-96231b3b80d8

isAsCheapAsMove instructions can have register src operands. Check if they are really re-materializable.
This fixes sse.expandfft and sse.stepfft.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63890 91177308-0d34-0410-b5e6-96231b3b80d8

Remove a non-DebugLoc version of getNode.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63889 91177308-0d34-0410-b5e6-96231b3b80d8

Revert rev. 63876. It is causing llvm-gcc bootstrap failure.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63888 91177308-0d34-0410-b5e6-96231b3b80d8

Delete some trailing whiespaces.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63887 91177308-0d34-0410-b5e6-96231b3b80d8

Remove 3 non-DebugLoc variants of getNode.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63886 91177308-0d34-0410-b5e6-96231b3b80d8

FIx spelling.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63883 91177308-0d34-0410-b5e6-96231b3b80d8

Probe for flags before using them to try to help compiling with
compilers that don't support those flags.  This hopefully will help
gcc 3.X compile this code.  http://llvm.org/PR3487

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63882 91177308-0d34-0410-b5e6-96231b3b80d8

Remove dead blocks in the end.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63880 91177308-0d34-0410-b5e6-96231b3b80d8

Ignore dbg intrinsics while propagating conditional expression info.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63876 91177308-0d34-0410-b5e6-96231b3b80d8

testcase for rdar://6551276 and llvm-gcc r63873

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63874 91177308-0d34-0410-b5e6-96231b3b80d8