switch the sched unit map over to use a DenseMap instead of std::map.  This
speeds up isel as a whole time by 2.6%.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33810 91177308-0d34-0410-b5e6-96231b3b80d8

Switch ComputeTopDownOrdering over to using a densemap.  This speeds up
isel as a whole by 3.3%.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33809 91177308-0d34-0410-b5e6-96231b3b80d8

__builtin_isunordered test case.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33808 91177308-0d34-0410-b5e6-96231b3b80d8

For PR1152:
Update documentation to reflect that this isn't a full-blown executable
any more.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33807 91177308-0d34-0410-b5e6-96231b3b80d8

Pasto

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33806 91177308-0d34-0410-b5e6-96231b3b80d8

And even more correctly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33805 91177308-0d34-0410-b5e6-96231b3b80d8

Format the examples correctly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33804 91177308-0d34-0410-b5e6-96231b3b80d8

For PR1152:
Update documentation to reflect addition of gccas functionality into opt.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33803 91177308-0d34-0410-b5e6-96231b3b80d8

Improves alloca test. Verifies SP restoration.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33802 91177308-0d34-0410-b5e6-96231b3b80d8

Switch inliner over to use DenseMap instead of std::map for ValueMap.  This
speeds up the inliner 16%.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33801 91177308-0d34-0410-b5e6-96231b3b80d8

bugfix: SP isn't resetted when function has FP and there is no spills.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33800 91177308-0d34-0410-b5e6-96231b3b80d8

Switch this back to using an std::map.  DenseMap entries are getting invalidated

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33799 91177308-0d34-0410-b5e6-96231b3b80d8

Two improvements:
1. Allow -- as well as - options (Bill Wendling)
2. Pass unrecognized options to opt and let it handle the errors, if any
   (Chris Lattner).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33798 91177308-0d34-0410-b5e6-96231b3b80d8

silence annoying warning in release-asserts build

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33797 91177308-0d34-0410-b5e6-96231b3b80d8

Remove more malloc thrashing, this speeds up IPSCCP on kimwitu another 6.7%.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33796 91177308-0d34-0410-b5e6-96231b3b80d8

Another thumb large stack offset codegen bug.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33795 91177308-0d34-0410-b5e6-96231b3b80d8

Convert an std::set to SmallSet, this speeds up IPSCCP 17% on kimwitu.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33794 91177308-0d34-0410-b5e6-96231b3b80d8

eliminate a malloc/free for (almost) every GEP processed.  This speeds up
IPSCCP 3.3% on kimwitu.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33793 91177308-0d34-0410-b5e6-96231b3b80d8

switch hash_map's over to DenseMap in SCCP.  This speeds up SCCP by 30% in
a release-assert build on kimwitu++.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33792 91177308-0d34-0410-b5e6-96231b3b80d8

add find/erase, add const iterators, fix bugs in iterators.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33791 91177308-0d34-0410-b5e6-96231b3b80d8

add iterators

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33790 91177308-0d34-0410-b5e6-96231b3b80d8

Use MBB.empty() instead of MBB.size() for speed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33789 91177308-0d34-0410-b5e6-96231b3b80d8

Watch out for empty BB.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33788 91177308-0d34-0410-b5e6-96231b3b80d8

For PR1152:
Step 2: Make plug compatible shell script to replace gccas binary.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33787 91177308-0d34-0410-b5e6-96231b3b80d8

For PR1152:
Step 1: Copy gccas functionality to opt. This endows opt with a new
-std-compile-opts option to get the set of optimization passes that
gccas used. It also adds -disable-inlining and -disable-opt which
both apply only if -std-compile-opts is given. The -strip-debug option
was also removed. It just makes sure that "-strip" gets done early and
is mostly there for compatibility with gccas. Finally, a new
-verify-each option will cause the verify pass to be run after each pass.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33786 91177308-0d34-0410-b5e6-96231b3b80d8

Remove dead code and fix indentation per Chris' review comments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33785 91177308-0d34-0410-b5e6-96231b3b80d8

Use short form of BinaryOperator create function.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33784 91177308-0d34-0410-b5e6-96231b3b80d8

Use short form of binary operator create functions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33783 91177308-0d34-0410-b5e6-96231b3b80d8

Put the Shift instructions in the right section.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33782 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a comment that needed to change after SHIFT patch landed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33781 91177308-0d34-0410-b5e6-96231b3b80d8

Ugh. Only meant to do this in thumb mode.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33780 91177308-0d34-0410-b5e6-96231b3b80d8

bugfix for reid's shift patch.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33779 91177308-0d34-0410-b5e6-96231b3b80d8

add a note

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33778 91177308-0d34-0410-b5e6-96231b3b80d8

1. Break long lines to 80 col limit
2. Fix indentation
3. Renumber the instruction opcodes after the Shift became a binary operator.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33777 91177308-0d34-0410-b5e6-96231b3b80d8

Changes to support making the shift instructions be true BinaryOperators.
This feature is needed in order to support shifts of more than 255 bits
on large integer types.  This changes the syntax for llvm assembly to
make shl, ashr and lshr instructions look like a binary operator:
   shl i32 %X, 1
instead of
   shl i32 %X, i8 1
Additionally, this should help a few passes perform additional optimizations.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33776 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a bug in getARMCMP (which translate CondCode to ARM specific CC) when the RHS is a constant.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33775 91177308-0d34-0410-b5e6-96231b3b80d8

Thumb does not have clz.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33773 91177308-0d34-0410-b5e6-96231b3b80d8

Dump function names when debug-pass=Executions is used.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33772 91177308-0d34-0410-b5e6-96231b3b80d8

Fix Transforms/InstCombine/2007-02-01-LoadSinkAlloca.ll, a serious code
pessimization where instcombine can sink a load (good for code size) that
prevents an alloca from being promoted by mem2reg (bad for everything).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33771 91177308-0d34-0410-b5e6-96231b3b80d8

new testcase for serious code pessimization

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33770 91177308-0d34-0410-b5e6-96231b3b80d8

My mistake, my environment wasn't up to date. This passes now.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33769 91177308-0d34-0410-b5e6-96231b3b80d8

XFAIL this on x86 linux as it continues to fail.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33768 91177308-0d34-0410-b5e6-96231b3b80d8

Pretty print pass managers.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33767 91177308-0d34-0410-b5e6-96231b3b80d8

Pretty print pass manager

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33766 91177308-0d34-0410-b5e6-96231b3b80d8

cvs commit

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33765 91177308-0d34-0410-b5e6-96231b3b80d8

Make sure the value passed to test function is initialized.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33764 91177308-0d34-0410-b5e6-96231b3b80d8

Define PrivateGlobalPrefix for ARM Linux. (Fix CodeGen/ARM/large_stack.ll)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33763 91177308-0d34-0410-b5e6-96231b3b80d8

Pasto. Lots of it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33762 91177308-0d34-0410-b5e6-96231b3b80d8

Ensure that ConvertOperandToType generates a result conversion by
initializing the Res variable to 0 and asserting it is not zero after the
result should have been created.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33761 91177308-0d34-0410-b5e6-96231b3b80d8

Fix bugs in the inliner having to do with single-entry phi nodes and valuemap
updating.  These were exposed by Devang's recent passmgr changes (with
non-default passorderings) because now the inliner can be interleved with
the LCSSA pass.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33760 91177308-0d34-0410-b5e6-96231b3b80d8

Fix .thumb_func directive on linux.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33759 91177308-0d34-0410-b5e6-96231b3b80d8

Slip up

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33758 91177308-0d34-0410-b5e6-96231b3b80d8

Emit labels as label_n and not as debug_n

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33757 91177308-0d34-0410-b5e6-96231b3b80d8

preserve sections of globals

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33756 91177308-0d34-0410-b5e6-96231b3b80d8

Support for non-landing pad exception handling.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33755 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a homonymo in a comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33754 91177308-0d34-0410-b5e6-96231b3b80d8

- Off by one bugs in maximum displacement calculation / testing.
- In thumb mode, a new constpool island BB size should be 4 + 2 to
  compensate for the potential padding due to alignment requirement.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33753 91177308-0d34-0410-b5e6-96231b3b80d8

Fixed uninitialized stuff inside LegalizeDAG. Fortunately, the only
affected part is codegen of "memove" inside x86 backend. This fixes
PR1144

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33752 91177308-0d34-0410-b5e6-96231b3b80d8

Add a new dense hash table implementation

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33751 91177308-0d34-0410-b5e6-96231b3b80d8

improve comments, add an assertion

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33750 91177308-0d34-0410-b5e6-96231b3b80d8

rename DenseMap to IndexedMap.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33749 91177308-0d34-0410-b5e6-96231b3b80d8

rename DenseMap -> IndexedMap.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33748 91177308-0d34-0410-b5e6-96231b3b80d8

silence some warnings when assertions are disabled.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33747 91177308-0d34-0410-b5e6-96231b3b80d8

silence warning

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33746 91177308-0d34-0410-b5e6-96231b3b80d8

Fit in 80 columns

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33745 91177308-0d34-0410-b5e6-96231b3b80d8

.set pc relative displacement bug: label should be moved down one instruction
to just before the add r1, pc:

Before:
        .set PCRELV0, (LJTI1_0_0-(LPCRELL0+4))
LPCRELL0:
        mov r1, #PCRELV0
        add r1, pc

Now:
        .set PCRELV0, (LJTI1_0_0-(LPCRELL0+4))
        mov r1, #PCRELV0
LPCRELL0:
        add r1, pc

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33744 91177308-0d34-0410-b5e6-96231b3b80d8

Add a note.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33743 91177308-0d34-0410-b5e6-96231b3b80d8

Add a test case.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33742 91177308-0d34-0410-b5e6-96231b3b80d8

Also set alignment of stack-based structs to 4 in thumb mode.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33741 91177308-0d34-0410-b5e6-96231b3b80d8

Added a thumb vararg test.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33740 91177308-0d34-0410-b5e6-96231b3b80d8

Special epilogue for vararg functions. We cannot do a pop to pc because
there follows a sp increment for the va register save region. Instead issue
a separate pop to another register, increment sp, and then return:
        pop {r4, r5, r6, r7}
        pop {r3}
        add sp, #3 * 4
        bx r3

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33739 91177308-0d34-0410-b5e6-96231b3b80d8

Add printVersion(). Linker can use it to print LLVM version number.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33738 91177308-0d34-0410-b5e6-96231b3b80d8

Add PrintVersionMessage() that tools can use to print version number
without exiting program.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33737 91177308-0d34-0410-b5e6-96231b3b80d8

Emit a better assertion message for PR1133

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33736 91177308-0d34-0410-b5e6-96231b3b80d8

Include Makefile.config before testing OS.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33735 91177308-0d34-0410-b5e6-96231b3b80d8

Pessmistically assume the .align 2 before the first constpool entry adds
two bytes padding.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33734 91177308-0d34-0410-b5e6-96231b3b80d8

Possible JT improvements.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33733 91177308-0d34-0410-b5e6-96231b3b80d8

Fix CodeGen/PowerPC/2007-01-31-InlineAsmAddrMode.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33732 91177308-0d34-0410-b5e6-96231b3b80d8

new testcase

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33731 91177308-0d34-0410-b5e6-96231b3b80d8

Fix test case.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33730 91177308-0d34-0410-b5e6-96231b3b80d8

Don't emit unnecessary .align directive.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33729 91177308-0d34-0410-b5e6-96231b3b80d8

Handle an interesting corner case: the constpool_entry being reference is two
instructions away, i.e. its address is equal to PC.
        %r0 = tLDRpci <cp#0>
        bx
        CONSTPOOL_ENTRY 0 <cp#0>, 4

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33728 91177308-0d34-0410-b5e6-96231b3b80d8

Don't want to add FramePtr to callee save spill list twice.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33727 91177308-0d34-0410-b5e6-96231b3b80d8

Fix build breakage by using correct arguments to getIndexedType in the
GEP constructors.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33726 91177308-0d34-0410-b5e6-96231b3b80d8

Fix test cases.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33725 91177308-0d34-0410-b5e6-96231b3b80d8

Darwin ABI requires FP to point to stack slot of prev FP.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33724 91177308-0d34-0410-b5e6-96231b3b80d8

Add entry.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33723 91177308-0d34-0410-b5e6-96231b3b80d8

Thumb add sp, #imm requires the immediate value be multiple of 4. For now,
change preferred alignment of short, byte, bool to 4.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33722 91177308-0d34-0410-b5e6-96231b3b80d8

Update comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33721 91177308-0d34-0410-b5e6-96231b3b80d8

Preview of the shift instructions becoming Binary Operators.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33720 91177308-0d34-0410-b5e6-96231b3b80d8

Dead comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33719 91177308-0d34-0410-b5e6-96231b3b80d8

Add some debug output.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33718 91177308-0d34-0410-b5e6-96231b3b80d8

Thumb asm syntax does not want 's' suffix for flag setting opcodes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33717 91177308-0d34-0410-b5e6-96231b3b80d8

shutdown the app when done.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33716 91177308-0d34-0410-b5e6-96231b3b80d8

remove temporary vectors.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33715 91177308-0d34-0410-b5e6-96231b3b80d8

add missing ctor

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33714 91177308-0d34-0410-b5e6-96231b3b80d8

eliminate temporary vectors

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33713 91177308-0d34-0410-b5e6-96231b3b80d8

eliminate temporary vectors

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33712 91177308-0d34-0410-b5e6-96231b3b80d8

When determining whether a pc relative branch / load displacement fits in the
instruction field, adjust it for PC value (4 for thumb, 8 for arm).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33711 91177308-0d34-0410-b5e6-96231b3b80d8

eliminate a temporary vector while parsing gep's from bc files.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33710 91177308-0d34-0410-b5e6-96231b3b80d8