Re-apply r84295, with fixes to how the loop "top" and "bottom" blocks are
tracked. Instead of trying to manually keep track of these locations
while doing complex modifications, just recompute them when they're needed.
This fixes a bug in which the TopMBB and BotMBB were not correctly updated,
leading to invalid transformations.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84598 91177308-0d34-0410-b5e6-96231b3b80d8

Trim unnecessary includes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84597 91177308-0d34-0410-b5e6-96231b3b80d8

Add getTopBlock and getBottomBlock member functions to MachineLoopInfo.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84596 91177308-0d34-0410-b5e6-96231b3b80d8

Correct test for PowerPC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84595 91177308-0d34-0410-b5e6-96231b3b80d8

Revert "Tweak top-level Makefile to facilitate Apple-style build.", this is
breaking Clang's Apple-style build.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84592 91177308-0d34-0410-b5e6-96231b3b80d8

NNT: Remove duplicate verbose print.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84591 91177308-0d34-0410-b5e6-96231b3b80d8

Now that all ARM subtargets use frame index scavenging, the Thumb1 requires*
functions are not needed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84587 91177308-0d34-0410-b5e6-96231b3b80d8

If the physical register being spilled does not have an interval, spill its sub-registers instead.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84586 91177308-0d34-0410-b5e6-96231b3b80d8

Enable post-pass frame index register scavenging for ARM and Thumb2

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84585 91177308-0d34-0410-b5e6-96231b3b80d8

lower ARM::MOVi32imm properly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84583 91177308-0d34-0410-b5e6-96231b3b80d8

add support for external symbols.  The mc instprinter  can now handle
reasonable code like Codegen/ARM/2009-02-27-SpillerBug.ll, producing
identical output except for superior formatting of constant pool entries.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84582 91177308-0d34-0410-b5e6-96231b3b80d8

get fancy: support basic block operands.  Yay for jumps.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84579 91177308-0d34-0410-b5e6-96231b3b80d8

add supprort for the 'sbit' operand, MOVi apparently has one.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84577 91177308-0d34-0410-b5e6-96231b3b80d8

add support for instruction predicates.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84575 91177308-0d34-0410-b5e6-96231b3b80d8

implement printSORegOperand, add lowering for the nasty and despicable MOVi2pieces :)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84573 91177308-0d34-0410-b5e6-96231b3b80d8

Refs: A8-598.
Leave Inst{11-8}, which represents the starting byte index of the extracted
result in the concatenation of the operands and is left unspecified.

Patch by Johnny Chen.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84572 91177308-0d34-0410-b5e6-96231b3b80d8

Add missing encoding bits to NLdSt class of instructions.

Patch by Johnny Chen.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84570 91177308-0d34-0410-b5e6-96231b3b80d8

X86 should ignore implicit regs when lowering to MCInst also,
no functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84567 91177308-0d34-0410-b5e6-96231b3b80d8

handle addmode4 modifiers, fix a fixme in printRegisterList
by ignoring all implicit regs when lowering.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84566 91177308-0d34-0410-b5e6-96231b3b80d8

simplify by using the twine form of GetOrCreateSymbol

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84565 91177308-0d34-0410-b5e6-96231b3b80d8

Updated cmake library dependencies.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84564 91177308-0d34-0410-b5e6-96231b3b80d8

Enable allocation of R3 in Thumb1

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84563 91177308-0d34-0410-b5e6-96231b3b80d8

use EmitLabel instead of text emission

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84562 91177308-0d34-0410-b5e6-96231b3b80d8

add a twine version of MCContext::GetOrCreateSymbol.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84561 91177308-0d34-0410-b5e6-96231b3b80d8

lower the ARM::CONSTPOOL_ENTRY pseudo op, giving us constant pool entries
like:

@ BB#1:
.align 2
LCPI1_0:
.long L_.str-(LPC0+8)

Note that proper indentation of the label :)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84558 91177308-0d34-0410-b5e6-96231b3b80d8

Adjust the scavenge register spilling to allow the target to choose an
appropriate restore location for the spill as well as perform the actual
save and restore.

The Thumb1 target uses this to make sure R12 is not clobbered while a spilled
scavenger register is live there.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84554 91177308-0d34-0410-b5e6-96231b3b80d8

add MCInstLower support for lowering ARM::PICADD, a pseudo op for pic stuffola.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84553 91177308-0d34-0410-b5e6-96231b3b80d8

Refactor lookup_or_add to contain _MUCH_ less duplicated code.  Add support for
numbering first class aggregate instructions while we're at it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84547 91177308-0d34-0410-b5e6-96231b3b80d8

add register list and hacked up addrmode #4 support, we now get this:

_main:
stmsp! sp!, {r7, lr}
mov r7, sp
sub sp, sp, #4
mov r0, #0
str r0, [sp]
ldr r0, LCPI1_0
bl _printf
ldr r0, [sp]
mov sp, r7
ldmsp! sp!, {r7, pc}

Note the unhappy ldm/stm because of modifiers being ignored.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84546 91177308-0d34-0410-b5e6-96231b3b80d8

revert r84540, fixing build breakage I didn't see because of
broken makefile deps :(

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84544 91177308-0d34-0410-b5e6-96231b3b80d8

add addrmode2 support, getting us up to:

_main:
stm ,
mov r7, sp
sub sp, sp, #4
mov r0, #0
str r0, [sp]
ldr r0, LCPI1_0
bl _printf
ldr r0, [sp]
mov sp, r7
ldm ,

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84543 91177308-0d34-0410-b5e6-96231b3b80d8

add jump tables, constant pools and some trivial global
lowering stuff.  We can now compile hello world to:

_main:
stm ,
mov r7, sp
sub sp, sp, #4
mov r0, #0
str r0,
ldr r0,
bl _printf
ldr r0,
mov sp, r7
ldm ,

Almost looks like arm code :)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84542 91177308-0d34-0410-b5e6-96231b3b80d8

Malloc calls are marked NoAlias, so the code below the isMalloc() check makes it redundant.  Removing the isMalloc() check.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84541 91177308-0d34-0410-b5e6-96231b3b80d8

pass mangler in as a reference instead of a pointer.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84540 91177308-0d34-0410-b5e6-96231b3b80d8

More refactoring...

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84537 91177308-0d34-0410-b5e6-96231b3b80d8

reduce #includes

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84536 91177308-0d34-0410-b5e6-96231b3b80d8

add printing support for SOImm operands, getting us to:

_main:
stm ,
mov r7, sp
sub sp, sp, #4
mov r0, #0
str r0,

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84535 91177308-0d34-0410-b5e6-96231b3b80d8

Simplify some code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84533 91177308-0d34-0410-b5e6-96231b3b80d8

wire up some basic printOperand goodness, giving us stuff like this before
we abort:

_main:
stm ,
mov r7, sp
sub sp, sp,
mov r0,
str r0,

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84532 91177308-0d34-0410-b5e6-96231b3b80d8

add the files that go with the previous rev

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84531 91177308-0d34-0410-b5e6-96231b3b80d8

wire up skeletal support for having llc print instructions
through mcinst lowering -> mcinstprinter, when llc is passed
the -enable-arm-mcinst-printer flag.  Currently this
is very "aborty".

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84530 91177308-0d34-0410-b5e6-96231b3b80d8

Banish ConstantsLock.  It's serving no purpose other than slowing things down
at the moment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84529 91177308-0d34-0410-b5e6-96231b3b80d8

wire up ARM's printMCInst method.  Now llvm-mc should be able to produce
"something" when printing MCInsts, it will just be missing all the
operand info.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84528 91177308-0d34-0410-b5e6-96231b3b80d8

stub out a minimal ARMInstPrinter.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84527 91177308-0d34-0410-b5e6-96231b3b80d8

remove strings from instructions who are never asmprinted.
All of these "subreg32" modifier instructions are handled
explicitly by the MCInst lowering phase.  If they got to
the asmprinter, they would explode.  They should eventually
be replace with correct use of subregs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84526 91177308-0d34-0410-b5e6-96231b3b80d8

Clean up the JITResolver stub/callsite<->function maps.

The JITResolver maps Functions to their canonical stubs and all callsites for
lazily-compiled functions to their target Functions. To make Function
destruction work, I'm going to need to remove all callsites on destruction, so
this patch also adds the reverse mapping for that.

There was an incorrect assumption in here that the only stub for a function
would be the one caused by needing to lazily compile it, while x86-64 far calls
and dlsym-stubs could also cause such stubs, but I didn't look for a test case
that the assumption broke.

This also adds DenseMapInfo<AssertingVH> so I can use DenseMaps instead of
std::maps.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84522 91177308-0d34-0410-b5e6-96231b3b80d8

simplify code, reducing string thrashing.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84521 91177308-0d34-0410-b5e6-96231b3b80d8

switch hidden gv stubs to use MachineModuleInfoMachO instead of a custom map.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84520 91177308-0d34-0410-b5e6-96231b3b80d8

use MachineModuleInfoMachO for non-lazy gv stubs instead of a private map.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84519 91177308-0d34-0410-b5e6-96231b3b80d8

convert to filecheck syntax and make a lot more aggressive.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84517 91177308-0d34-0410-b5e6-96231b3b80d8

Revert r84295, this unbreaks llvm-gcc bootstrap on x86-64/linux

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84516 91177308-0d34-0410-b5e6-96231b3b80d8

rename test

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84515 91177308-0d34-0410-b5e6-96231b3b80d8

remove dead map

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84513 91177308-0d34-0410-b5e6-96231b3b80d8

don't bother trying to avoid emitting redundant constant pool alignment directives.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84512 91177308-0d34-0410-b5e6-96231b3b80d8

remove accidental comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84510 91177308-0d34-0410-b5e6-96231b3b80d8

emit .subsections_via_symbols through MCStreamer instead of textually.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84509 91177308-0d34-0410-b5e6-96231b3b80d8

cleanup doFinalization -> EmitEndOfAsmFile.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84508 91177308-0d34-0410-b5e6-96231b3b80d8

Tweak top-level Makefile to facilitate Apple-style build.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84507 91177308-0d34-0410-b5e6-96231b3b80d8

PR 5245 - The imediate size target flag was not set on 3A-prefixed SSSE3 instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84506 91177308-0d34-0410-b5e6-96231b3b80d8

Fix SplitBlockPredecessors' LoopInfo updating code to handle the case
where a loop's header is being split and it has predecessors which are not
contained by the most-nested loop which contains the loop.
This fixes PR5235.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84505 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a typo in a comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84504 91177308-0d34-0410-b5e6-96231b3b80d8

Change a few instance variables to be local variables.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84503 91177308-0d34-0410-b5e6-96231b3b80d8

Change instnamer to name arguments "arg" instead of "tmp" for clarity, and
to name basic blocks "bb" instead of "BB", for consistency.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84502 91177308-0d34-0410-b5e6-96231b3b80d8

NNT: Add -parallel-test option, which runs llvm-test with
ENABLE_PARALLEL_REPORT.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84497 91177308-0d34-0410-b5e6-96231b3b80d8

NNT: Don't hard code -l3.0 argument to make, this is very server dependent. Users who care can use -compileflags for this.

Also, fix make clean call and a few other tweaks.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84496 91177308-0d34-0410-b5e6-96231b3b80d8

NNT: Fix refactoro, I dropped the list of all (llvm-test) tests. I'm sure it was named dejagnu_test_list for a good reason.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84495 91177308-0d34-0410-b5e6-96231b3b80d8

NNT: Lift conditional logic out of test steps.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84494 91177308-0d34-0410-b5e6-96231b3b80d8

NNT: Now that build & test steps are factored out, coalesce all the logic together.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84493 91177308-0d34-0410-b5e6-96231b3b80d8

NNT: Sink code for running nightly test into subroutine.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84492 91177308-0d34-0410-b5e6-96231b3b80d8

NNT: Tweaks and simplifications.
 - Split out configure log.
 - Kill off GetRegexNum.
 - Fix GetRegex to not return previous match on failure.
 - Remove dead code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84491 91177308-0d34-0410-b5e6-96231b3b80d8

NNT: Move build code into subroutine.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84490 91177308-0d34-0410-b5e6-96231b3b80d8

NNT: Move source checkout code into subroutine.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84489 91177308-0d34-0410-b5e6-96231b3b80d8

NNT: Remove .{o,a} size info, this is better tracked elsewhere.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84488 91177308-0d34-0410-b5e6-96231b3b80d8

NNT: Remove code to track build warnings, the buildbots cover this.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84487 91177308-0d34-0410-b5e6-96231b3b80d8

Fix PR5247, "lock addq" pattern (and other atomics), it DOES modify EFLAGS.
LLC was scheduling compares before the adds causing wrong branches to be taken
in programs, resulting in misoptimized code wherever atomic adds where used.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84485 91177308-0d34-0410-b5e6-96231b3b80d8

Also check for __POWERPC__ when skipping these tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84482 91177308-0d34-0410-b5e6-96231b3b80d8

NNT: Remove hard coded BuildDir and WebDir, users should have to specify these.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84481 91177308-0d34-0410-b5e6-96231b3b80d8

NNT: Remove "CVS Stats", this isn't particularly useful and can be better done by the server or user.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84480 91177308-0d34-0410-b5e6-96231b3b80d8

NNT: Remove now-unused -cvstag argument and CVSROOT code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84479 91177308-0d34-0410-b5e6-96231b3b80d8

NNT: Remove -usecvs option, this is very old.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84478 91177308-0d34-0410-b5e6-96231b3b80d8

NNT: Remove -debug argument, it is unused.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84477 91177308-0d34-0410-b5e6-96231b3b80d8

Regroup NewNightlyTest.pl options

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84476 91177308-0d34-0410-b5e6-96231b3b80d8

various cleanups.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84471 91177308-0d34-0410-b5e6-96231b3b80d8

simplify.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84465 91177308-0d34-0410-b5e6-96231b3b80d8

eliminate md_on_instruction.ll, md_on_instruction2.ll is a superset of it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84464 91177308-0d34-0410-b5e6-96231b3b80d8

clean up after metadata changes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84463 91177308-0d34-0410-b5e6-96231b3b80d8

lit: When running Tcl scripts via shell, try harder to find 'bash', but fall
back to running them internally if that fails. PR5240.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84462 91177308-0d34-0410-b5e6-96231b3b80d8

Add link to 'lit' from CommandGuide.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84461 91177308-0d34-0410-b5e6-96231b3b80d8

Teach lit that the .c files in 'test/CodeGen/CellSPU/useful-harnesses' aren't tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84460 91177308-0d34-0410-b5e6-96231b3b80d8

Add support for matching shuffle patterns with palignr.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84459 91177308-0d34-0410-b5e6-96231b3b80d8

Refactoring, no functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84450 91177308-0d34-0410-b5e6-96231b3b80d8

Spill slots cannot alias.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84432 91177308-0d34-0410-b5e6-96231b3b80d8

Turn on post-alloc scheduling for x86.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84431 91177308-0d34-0410-b5e6-96231b3b80d8

Oops. I forgot to change the tests first. Disable post-alloc scheduling.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84425 91177308-0d34-0410-b5e6-96231b3b80d8

-Revert parts of 84326 and 84411. Distinquishing between fixed and non-fixed
stack slots and giving them different PseudoSourceValue's did not fix the
problem of post-alloc scheduling miscompiling llvm itself.
- Apply Dan's conservative workaround by assuming any non fixed stack slots can
alias other memory locations. This means a load from spill slot #1 cannot
move above a store of spill slot #2.
- Enable post-alloc scheduling for x86 at optimization leverl Default and above.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84424 91177308-0d34-0410-b5e6-96231b3b80d8

Only fixed stack objects and spill slots should be get FixedStack PseudoSourceValue.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84411 91177308-0d34-0410-b5e6-96231b3b80d8

remove some nonascii weird stuff

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84410 91177308-0d34-0410-b5e6-96231b3b80d8

remove a now-pointless regtest

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84409 91177308-0d34-0410-b5e6-96231b3b80d8

add some fixme's

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84408 91177308-0d34-0410-b5e6-96231b3b80d8

punctuate properly

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84407 91177308-0d34-0410-b5e6-96231b3b80d8