Minor code simplification.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100994 91177308-0d34-0410-b5e6-96231b3b80d8

When creating a ConstantRange for [n,UINT_MAX], special case n == 0, because
ConstantRange(0, 0) creates an empty range rather than a full one.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100993 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100992 91177308-0d34-0410-b5e6-96231b3b80d8

Add a cast to void to show that the return value is being
intentionally ignored.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100984 91177308-0d34-0410-b5e6-96231b3b80d8

Delete a dead check.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100983 91177308-0d34-0410-b5e6-96231b3b80d8

Delete dead code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100981 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a #include.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100980 91177308-0d34-0410-b5e6-96231b3b80d8

Rename isLoopGuardedByCond to isLoopEntryGuardedByCond, to emphasise
that it's only testing for the entry condition, not full loop-invariant
conditions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100979 91177308-0d34-0410-b5e6-96231b3b80d8

utostr isn't going away too soon, try to make it slightly smaller.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100977 91177308-0d34-0410-b5e6-96231b3b80d8

Remove dead argument and clean whitespace. No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100954 91177308-0d34-0410-b5e6-96231b3b80d8

Implement support for varargs functions without any fixed
parameters in the CBE by implicitly adding a fixed argument.
This allows eliminating a work-around from DAE.  Patch by
Sylvere Teissier!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100944 91177308-0d34-0410-b5e6-96231b3b80d8

configure: Fix default value for optimize_option, I messed up the test condition
in r86005 and unintentionally changed the default from -O3 to -O2.

 - It's odd the things automated perf testing turns up! :)

 - Also, the configure diff is messed up slightly. It looks like someone either
   didn't regenerate configure correctly (or I didn't), or autoconf has some
   funnyness in it. Eric, any ideas?

This has been at -O2 for so long, that I am slightly nervous that this change
will uncover miscompiles of LLVM on other systems. If that is the case, I think
we should just set the default universally at -O3, and let developers/vendors
use -O3 if they want it and have tested it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100941 91177308-0d34-0410-b5e6-96231b3b80d8

fix PR6743, a case where we'd delete an instruction before using it
in some cases.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100937 91177308-0d34-0410-b5e6-96231b3b80d8

fix PR6760, a missing check in heap SRoA.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100936 91177308-0d34-0410-b5e6-96231b3b80d8

turn an assert into a proper check, fixing crash on invalid here:

$ llvm-as t.ll
llvm-as: t.ll:1:6: error: expected 'type' after '='
%0 = = type { i32, float, float, double }
     ^

PR6810.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100934 91177308-0d34-0410-b5e6-96231b3b80d8

improve haiku portability, patch by Paul Davey.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100933 91177308-0d34-0410-b5e6-96231b3b80d8

add attributes and module level asm to the ocaml bindings,
patch by Patrick Walton!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100932 91177308-0d34-0410-b5e6-96231b3b80d8

Updated the edis build mechanism to allow for builds
that do not build some (or all) of the targets that
edis supports.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100910 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a typo and some indentation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100908 91177308-0d34-0410-b5e6-96231b3b80d8

When determining a canonical insert position, don't climb deeper
into adjacent loops. Also, ensure that the insert position is
dominated by the loop latch of any loop in the post-inc set which
has a latch.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100906 91177308-0d34-0410-b5e6-96231b3b80d8

Tidy whitespace.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100904 91177308-0d34-0410-b5e6-96231b3b80d8

If all the bit positions are not specified; do not decode the instructions.
We are bound to fail!  For proper disassembly, the well-known encoding bits
of the instruction must be fully specified.

This also removes pseudo instructions from considerations of disassembly,
which is a better design and less fragile than the name matchings.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100899 91177308-0d34-0410-b5e6-96231b3b80d8

suck the propagating "has dynamic libs" check into a single makefile
variable TARGET_HAS_DYNAMIC_LIBS

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100896 91177308-0d34-0410-b5e6-96231b3b80d8

add minix support, patch by Kees van Reeuwijk!  PR6797

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100895 91177308-0d34-0410-b5e6-96231b3b80d8

clean this up, fix std::min ambiguity on some platforms.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100894 91177308-0d34-0410-b5e6-96231b3b80d8

Adding IPSCCP and Internalize passes to the C-bindings

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100893 91177308-0d34-0410-b5e6-96231b3b80d8

Provide versions of the ARM eh_sjlj_setjmp instructions for non-VFP subtargets
such that the non-VFP versions have no implicit defs of VFP registers.
If any callee-saved VFP registers are marked as having been defined, the
prologue/epilogue code will try to save and restore them.
Radar 7770432.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100892 91177308-0d34-0410-b5e6-96231b3b80d8

Move 'Optional' class from Clang to LLVM/ADT.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100889 91177308-0d34-0410-b5e6-96231b3b80d8

ARM decoder emitter should print out useful information unconditionally when it
encounters decoding conflicts, instead of wrapping it inside the DEBUG() macro.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100886 91177308-0d34-0410-b5e6-96231b3b80d8

When emitting code for an add, don't force a SCEVUnknown wrapper around
a hoisted intermediate result if the intermediate result isn't an
Instruction.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100884 91177308-0d34-0410-b5e6-96231b3b80d8

When looking for loop-invariant users, look through no-op instructions,
so that an unfortunately placed bitcast doesn't pin a value in a
register.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100883 91177308-0d34-0410-b5e6-96231b3b80d8

Make sure this test tests something.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100879 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a grammaro.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100877 91177308-0d34-0410-b5e6-96231b3b80d8

Add a testcase for svn r100568.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100876 91177308-0d34-0410-b5e6-96231b3b80d8

"On SPU, variables in the .bss section that are allocated with the .lcomm directive are not aligned on 16 byte boundaries. This causes misaligned loads, as the generated assembly assumes this "default" alignment.

this patch disables .lcomm in favour of '.local .comm'

Patch by Kalle Raisklia!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100875 91177308-0d34-0410-b5e6-96231b3b80d8

Add a comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100874 91177308-0d34-0410-b5e6-96231b3b80d8

Fix up header comments to match the comment fixups I made in r100849.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100869 91177308-0d34-0410-b5e6-96231b3b80d8

Clear InsnsBeginScopeSet and InsnsEndScopeSet at the end of function.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100867 91177308-0d34-0410-b5e6-96231b3b80d8

performance: cache result of looking up user

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100862 91177308-0d34-0410-b5e6-96231b3b80d8

Merge a few fast-isel tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100860 91177308-0d34-0410-b5e6-96231b3b80d8

Minor code simplification.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100859 91177308-0d34-0410-b5e6-96231b3b80d8

Delete this obsolete comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100858 91177308-0d34-0410-b5e6-96231b3b80d8

const-ize a predicate

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100856 91177308-0d34-0410-b5e6-96231b3b80d8

Add a missing dependency to this library when building with CMake.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100852 91177308-0d34-0410-b5e6-96231b3b80d8

Use getNumImplicitDefs() and getNumImplicitUses().

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100850 91177308-0d34-0410-b5e6-96231b3b80d8

Fix up some comments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100849 91177308-0d34-0410-b5e6-96231b3b80d8

revert r100842  which broke several of the build bots.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100848 91177308-0d34-0410-b5e6-96231b3b80d8

lit: Add support to OneCommandPerFileTest format to take input directory from input path.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100846 91177308-0d34-0410-b5e6-96231b3b80d8

Refactor the code for computing the insertion point for an expression into
a separate function.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100845 91177308-0d34-0410-b5e6-96231b3b80d8

Added a tester for the enhanced disassembler,
integrated into the llvm-mc testing tool.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100842 91177308-0d34-0410-b5e6-96231b3b80d8

Add several more lint checks.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100841 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a bug in IVUsers which was permitting non-affine addrecs to
be sent to LSR, which it isn't prepared to handle.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100839 91177308-0d34-0410-b5e6-96231b3b80d8

Don't use reserved identifiers.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100838 91177308-0d34-0410-b5e6-96231b3b80d8

fix a SCCP miscompilation that could happen when a
forced constant is changed to a constant, we would end
up adding the instruction to the wrong worklist,
preventing it from being properly revisited.  This fixes
rdar://7832370

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100837 91177308-0d34-0410-b5e6-96231b3b80d8

Bugfixes for edis.  Code to initialize instruction
state was being executed too lazily, and the LLVM
assembly syntax for the disassembler was not being
written into the proper disassembler state variable.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100830 91177308-0d34-0410-b5e6-96231b3b80d8

Avoid allocating a value of zero in a register if the initial formula
inputs happen to negate each other.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100828 91177308-0d34-0410-b5e6-96231b3b80d8

Add a few more lint checks.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100825 91177308-0d34-0410-b5e6-96231b3b80d8

Add variants of ult, ule, etc. which take a uint64_t RHS, for convenience.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100824 91177308-0d34-0410-b5e6-96231b3b80d8

delete a forwarding function.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100815 91177308-0d34-0410-b5e6-96231b3b80d8

move elf section uniquing to MCContext.  Along the way
merge XCore's section into MCSectionELF

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100812 91177308-0d34-0410-b5e6-96231b3b80d8

Now that Evan Cheng has fixed the coalescer bug (r100804), the workaround code
to avoid memcpy() call is no longer necessary.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100811 91177308-0d34-0410-b5e6-96231b3b80d8

remove the TargetLoweringObjectFileMachO::getMachoSection
api and update clients to use MCContext instead.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100808 91177308-0d34-0410-b5e6-96231b3b80d8

move macho section uniquing from MCParser and TLOF to MCContext where
the compiler and asmparser now unique to the same sections.  This fixes
rdar://7835021.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100807 91177308-0d34-0410-b5e6-96231b3b80d8

Coalescer should not delete copy instructions whose defs are partially dead. e.g.
%RDI<def,dead> = MOV64rr %RAX<kill>, %EDI<imp-def>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100804 91177308-0d34-0410-b5e6-96231b3b80d8

Update CMake build.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100802 91177308-0d34-0410-b5e6-96231b3b80d8

Fix -Wsign-compare warning (issued by clang++).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100799 91177308-0d34-0410-b5e6-96231b3b80d8

Add a -lint pass which checks for common sources of undefined or likely
unintended behavior.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100798 91177308-0d34-0410-b5e6-96231b3b80d8

Rename a function.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100797 91177308-0d34-0410-b5e6-96231b3b80d8

implicit defs get added to the end of machine instrs sometimes.  Scan the whole instruction for the metadata operand instead of assuming it will be at the end of the instruction.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100792 91177308-0d34-0410-b5e6-96231b3b80d8

Pointers to zero-sized objects don't point to overlapping objects.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100789 91177308-0d34-0410-b5e6-96231b3b80d8

Print empty structs as {} rather than { }.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100787 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100783 91177308-0d34-0410-b5e6-96231b3b80d8

Touch configure so it regenerates Disassemblers.def to include ARM so
people stop seeing a broken build in EDDisassembler.cpp

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100782 91177308-0d34-0410-b5e6-96231b3b80d8

One instruction may start (or end) multiple lexical scopes.
There is no need to remember labels identifying regions marked by such instructions in each scope.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100781 91177308-0d34-0410-b5e6-96231b3b80d8

clean up algorithm and remove operand order assumptions

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100780 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100774 91177308-0d34-0410-b5e6-96231b3b80d8

Remove dead code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100771 91177308-0d34-0410-b5e6-96231b3b80d8

Delete out of date comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100769 91177308-0d34-0410-b5e6-96231b3b80d8

Refactor.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100768 91177308-0d34-0410-b5e6-96231b3b80d8

Various MSVC warning fixes about truncated 64 bit shifts and const pointers passed to free.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100767 91177308-0d34-0410-b5e6-96231b3b80d8

Provide operator delete for BumpPtrAllocator and RecyclingAllocator. They will
never be called but msvc complains that they're missing.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100766 91177308-0d34-0410-b5e6-96231b3b80d8

use abstract interface in two more places

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100762 91177308-0d34-0410-b5e6-96231b3b80d8

fix compile

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100760 91177308-0d34-0410-b5e6-96231b3b80d8

use abstract interface

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100758 91177308-0d34-0410-b5e6-96231b3b80d8

Use twines to simplify calls to report_fatal_error. For code size and readability.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100756 91177308-0d34-0410-b5e6-96231b3b80d8

Use errs instead of fprintf.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100754 91177308-0d34-0410-b5e6-96231b3b80d8

Avoid using f64 to lower memcpy from constant string. It's cheaper to use i32 store of immediates.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100751 91177308-0d34-0410-b5e6-96231b3b80d8

Revert this change from a while ago; ScalarEvolution shouldn't analyze
undef as 0, since it can't force other analyses to intepret the undef
in the same way.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100749 91177308-0d34-0410-b5e6-96231b3b80d8

When expanding expressions which are using post-inc mode for multiple loops,
ensure that the expansion is dominated by the increments of those loops.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100748 91177308-0d34-0410-b5e6-96231b3b80d8

Make post regalloc machine licm functional. It now passes all of MultiSource.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100742 91177308-0d34-0410-b5e6-96231b3b80d8

typo

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100738 91177308-0d34-0410-b5e6-96231b3b80d8

document isvolatile etc.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100737 91177308-0d34-0410-b5e6-96231b3b80d8

mpsadbw is not commutative.

Fixes PR3440.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100736 91177308-0d34-0410-b5e6-96231b3b80d8

Added support for ARM disassembly to edis.

I also added a rule to the ARM target's Makefile to
build the ARM-specific instruction information table
for the enhanced disassembler.

I will add the test harness for all this stuff in
a separate commit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100735 91177308-0d34-0410-b5e6-96231b3b80d8

convert a report_fatal_error that I was able to trigger into a nice error
so the user at least knows what inline asm is a problem.  For example:

error: inline asm not supported yet: don't know how to handle tied indirect register inputs
pr8788-1.c:14:10: note: generated from here
    asm ("\n" : "+r" (stack->regs)
         ^

Instead of:
fatal error: error in backend: Don't know how to handle tied indirect register inputs yet!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100731 91177308-0d34-0410-b5e6-96231b3b80d8

Fix typo.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100726 91177308-0d34-0410-b5e6-96231b3b80d8

minor tidying.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100725 91177308-0d34-0410-b5e6-96231b3b80d8

use assertions instead of unreachable for logic errors.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100724 91177308-0d34-0410-b5e6-96231b3b80d8

introduce a new recoverable error handling API to LLVMContext
and use it in one place in inline asm handling stuff.  Before
we'd generate this for an invalid modifier letter:

$ clang asm.c -c -o t.o
fatal error: error in backend: Invalid operand found in inline asm: 'abc incl    ${0:Z}'
INLINEASM <es:abc incl    ${0:Z}>, 10, %EAX<def>, 2147483657, %EAX, 14, %EFLAGS<earlyclobber,def,dead>, <!-1>

Now we generate this:

$ clang asm.c -c -o t.o
error: invalid operand in inline asm: 'incl    ${0:Z}'
asm.c:3:12: note: generated from here
  __asm__ ("incl    %Z0" : "+r" (X));
           ^
1 error generated.

This is much better but still admittedly not great ("why" is the operand
invalid??), codegen should try harder with its diagnostics :)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100723 91177308-0d34-0410-b5e6-96231b3b80d8

Say bitcast instead of bitconvert.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100720 91177308-0d34-0410-b5e6-96231b3b80d8