Fix up the logic for result expanding the various extension
operations so they work right for integers with funky
bit-widths.  For example, consider extending i48 to i64
on a 32 bit machine.  The i64 result is expanded to 2 x i32.
We know that the i48 operand will be promoted to i64, then
also expanded to 2 x i32.  If we had the expanded promoted
operand to hand, then expanding the result would be trivial.
Unfortunately at this stage we can only get hold of the
promoted operand.  So instead we kind of hand-expand, doing
explicit shifting and truncating to get the top and bottom
halves of the i64 operand into 2 x i32, which are then used
to expand the result.  This is harmless, because when the
promoted operand is finally expanded all this bit fiddling
turns into trivial operations which are eliminated either
by the expansion code itself or the DAG combiner.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43223 91177308-0d34-0410-b5e6-96231b3b80d8

fit in 80 cols :)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43222 91177308-0d34-0410-b5e6-96231b3b80d8

start of chapter 3

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43221 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a few typos I noticed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43220 91177308-0d34-0410-b5e6-96231b3b80d8

Add downloadable code samples.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43219 91177308-0d34-0410-b5e6-96231b3b80d8

Check in part 2: parser and ast.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43218 91177308-0d34-0410-b5e6-96231b3b80d8

Fix some code to make it actually work.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43217 91177308-0d34-0410-b5e6-96231b3b80d8

Put correct link in example

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43216 91177308-0d34-0410-b5e6-96231b3b80d8

add part 1, review appreciated.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43215 91177308-0d34-0410-b5e6-96231b3b80d8

add an outline for "part 2".

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43214 91177308-0d34-0410-b5e6-96231b3b80d8

rename tutorial 1 -> JITTutorial1, make unimplemented links not be dead links.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43213 91177308-0d34-0410-b5e6-96231b3b80d8

Fix an unfolding bug.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43212 91177308-0d34-0410-b5e6-96231b3b80d8

- Only perform the unfolding optimization when the folding in question is modref.
- Remove a bogus assertion.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43211 91177308-0d34-0410-b5e6-96231b3b80d8

add a mechanism for the JIT to invoke a function to lazily create functions as they are referenced.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43210 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-gcc3 is dead, along with it __main.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43209 91177308-0d34-0410-b5e6-96231b3b80d8

Reg2Mem cleanup and optimizations:
 - enable phi instructions demotion to stack
 - create alloca instructions in the entry block

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43208 91177308-0d34-0410-b5e6-96231b3b80d8

LoadLibraryPermanently doesn't throw.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43207 91177308-0d34-0410-b5e6-96231b3b80d8

Add a convenience method for creating EE's.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43206 91177308-0d34-0410-b5e6-96231b3b80d8

Allow for copysign having f80 second argument.
Fixes 5550319.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43205 91177308-0d34-0410-b5e6-96231b3b80d8

Add promote operand support for [su]int_to_fp.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43204 91177308-0d34-0410-b5e6-96231b3b80d8

Some improvements based on feedback from Anders.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43203 91177308-0d34-0410-b5e6-96231b3b80d8

Fix some weird indenting in code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43202 91177308-0d34-0410-b5e6-96231b3b80d8

Use getOrInsertFunction() in tutorial 1.  This makes for shorter, simpler, and better example code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43201 91177308-0d34-0410-b5e6-96231b3b80d8

Add the beginnings of an LLVM tutorial.  If anyone has suggestions, comments,
or would like to contribute, let me know!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43200 91177308-0d34-0410-b5e6-96231b3b80d8

Add result promotion of FP_TO_*INT, fixing CodeGen/X86/trunc-to-bool.ll
with the new legalizer.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43199 91177308-0d34-0410-b5e6-96231b3b80d8

simplify some code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43198 91177308-0d34-0410-b5e6-96231b3b80d8

Implement promote and expand for operands of memcpy and friends.
This fixes CodeGen/X86/mem*.ll.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43197 91177308-0d34-0410-b5e6-96231b3b80d8

Added missing curly braces which renders the if clause useless in debug build.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43196 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a few places vector operations were not getting
the operand's type from the right place.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43195 91177308-0d34-0410-b5e6-96231b3b80d8

Resolve unfold tables ambiguity.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43194 91177308-0d34-0410-b5e6-96231b3b80d8

New test case.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43193 91177308-0d34-0410-b5e6-96231b3b80d8

Local spiller optimization:
Turn a store folding instruction into a load folding instruction. e.g.
     xorl  %edi, %eax
     movl  %eax, -32(%ebp)
     movl  -36(%ebp), %eax
     orl   %eax, -32(%ebp)
=>
     xorl  %edi, %eax
     orl   -36(%ebp), %eax
     mov   %eax, -32(%ebp)
This enables the unfolding optimization for a subsequent instruction which will
also eliminate the newly introduced store instruction.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43192 91177308-0d34-0410-b5e6-96231b3b80d8

Don't branch fold inline asm statements.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43191 91177308-0d34-0410-b5e6-96231b3b80d8

Add support for a few more nodes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43190 91177308-0d34-0410-b5e6-96231b3b80d8

Redo "last ppc long double fix" as Chris wants.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43189 91177308-0d34-0410-b5e6-96231b3b80d8

Removed "-arch i386" by popular demand...

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43186 91177308-0d34-0410-b5e6-96231b3b80d8

Now with RUN line!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43185 91177308-0d34-0410-b5e6-96231b3b80d8

Remove the Foundation.h file because not everyone has that.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43184 91177308-0d34-0410-b5e6-96231b3b80d8

This test now passes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43183 91177308-0d34-0410-b5e6-96231b3b80d8

Update this file for 2.0 syntax. Contributed by Jan Rehders

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43182 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a really nasty vector miscompilation bill recently introduced.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43181 91177308-0d34-0410-b5e6-96231b3b80d8

Updated VC++ build system

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43180 91177308-0d34-0410-b5e6-96231b3b80d8

rename ExpandOperation to ExpandOperationResult, as suggested
by Duncan

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43177 91177308-0d34-0410-b5e6-96231b3b80d8

split LowerMEMCPY into LowerMEMCPYCall and LowerMEMCPYInline in the ARM backend.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43176 91177308-0d34-0410-b5e6-96231b3b80d8

Support for expanding ADDE and SUBE.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43175 91177308-0d34-0410-b5e6-96231b3b80d8

If the value types are equal then this routine
asserts in later checks rather than producing
the ordinary load it is supposed to.  Avoid all
such hassles by directly returning an ordinary
load in this case.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43174 91177308-0d34-0410-b5e6-96231b3b80d8

Test byval with a 8 bit aligned struct

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43173 91177308-0d34-0410-b5e6-96231b3b80d8

Add support for byval function whose argument is not 32 bit aligned.
To do this it is necessary to add a "always inline" argument to the
memcpy node. For completeness I have also added this node to memmove
and memset.  I have also added getMem* functions, because the extra
argument makes it cumbersome to use getNode and because I get confused
by it :-)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43172 91177308-0d34-0410-b5e6-96231b3b80d8

Implement a few new operations.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43171 91177308-0d34-0410-b5e6-96231b3b80d8

Implement expansion of SINT_TO_FP and UINT_TO_FP operands.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43170 91177308-0d34-0410-b5e6-96231b3b80d8

implement support for custom expansion of any node type, in one place.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43169 91177308-0d34-0410-b5e6-96231b3b80d8

comment fixes

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43168 91177308-0d34-0410-b5e6-96231b3b80d8

Make use of TLI.ExpandOperation, remove softfloat stuff.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43167 91177308-0d34-0410-b5e6-96231b3b80d8

add expand support for bit_convert result, even allowing custom expansion.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43166 91177308-0d34-0410-b5e6-96231b3b80d8

add a new target hook.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43165 91177308-0d34-0410-b5e6-96231b3b80d8

Add an easy microoptimization I noticed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43164 91177308-0d34-0410-b5e6-96231b3b80d8

New test.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43162 91177308-0d34-0410-b5e6-96231b3b80d8

Negative indices aren't allowed here.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43161 91177308-0d34-0410-b5e6-96231b3b80d8

More ppcf128 issues (maybe the last)?

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43160 91177308-0d34-0410-b5e6-96231b3b80d8

- Added getOpcodeAfterMemoryUnfold(). It doesn't unfold an instruction, but only returns the opcode of the instruction post unfolding.
- Fix some copy+paste bugs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43153 91177308-0d34-0410-b5e6-96231b3b80d8

Use SmallVectorImpl instead of SmallVector with hardcoded size in MRegister public interface.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43150 91177308-0d34-0410-b5e6-96231b3b80d8

Try again.
Instead of loading small global string from memory, use
integer constant.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43148 91177308-0d34-0410-b5e6-96231b3b80d8

Allow GVN to eliminate redundant calls to functions without side effects.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43147 91177308-0d34-0410-b5e6-96231b3b80d8

Add an uppercase conversion utility function.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43146 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a misnamed parameter.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43145 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a typo

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43144 91177308-0d34-0410-b5e6-96231b3b80d8

Fix PR1735 and Transforms/DeadArgElim/2007-10-18-VarargsReturn.ll by
fixing some obviously broken code :(

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43141 91177308-0d34-0410-b5e6-96231b3b80d8

Fix the command line.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43140 91177308-0d34-0410-b5e6-96231b3b80d8

Fix test.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43136 91177308-0d34-0410-b5e6-96231b3b80d8

this doesn't need dynamic_cast.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43133 91177308-0d34-0410-b5e6-96231b3b80d8

remove dead file

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43131 91177308-0d34-0410-b5e6-96231b3b80d8

Reduce reliance on rtti info

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43130 91177308-0d34-0410-b5e6-96231b3b80d8

fix typo

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43129 91177308-0d34-0410-b5e6-96231b3b80d8

update comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43128 91177308-0d34-0410-b5e6-96231b3b80d8

This requires rtti info because tblgen uses commandline,
and tblgen requires rtti.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43127 91177308-0d34-0410-b5e6-96231b3b80d8

tblgen uses dynamic_cast heavily, so it needs rtti info

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43126 91177308-0d34-0410-b5e6-96231b3b80d8

Updated VC++ build system

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43123 91177308-0d34-0410-b5e6-96231b3b80d8

Work around downrev gccs which do not inherit visibility of the
Registry<>::iterator member class.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43122 91177308-0d34-0410-b5e6-96231b3b80d8

Missing 'public' keyword.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43121 91177308-0d34-0410-b5e6-96231b3b80d8

Pointer arithmetic should be done with the index the same size as the pointer.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43120 91177308-0d34-0410-b5e6-96231b3b80d8

Support for ADDC/SUBC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43119 91177308-0d34-0410-b5e6-96231b3b80d8

Really fix PR1734. Carefully track which register uses are sub-register uses by
traversing inverse register coalescing map.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43118 91177308-0d34-0410-b5e6-96231b3b80d8

Remove unnecessary include.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43117 91177308-0d34-0410-b5e6-96231b3b80d8

legalizing the ret operation on f64 shouldn't introduce a new
i64 bit convert needlessly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43116 91177308-0d34-0410-b5e6-96231b3b80d8

Move Split<...>() into DomTreeBase.  This should make the #include's of DominatorInternals.h
in CodeExtractor and LoopSimplify unnecessary.

Hartmut, could you confirm that this fixes the issues you were seeing?

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43115 91177308-0d34-0410-b5e6-96231b3b80d8

XFAIL for now.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43111 91177308-0d34-0410-b5e6-96231b3b80d8

Changed the return type of type-specific Allocate() methods to return
void*.  This is hint that we are returning uninitialized memory rather
than a constructed object.

Patched ImutAVLTree to conform to this new interface.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43106 91177308-0d34-0410-b5e6-96231b3b80d8

Reverting r43070 for now. It's causing llc test failures.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43103 91177308-0d34-0410-b5e6-96231b3b80d8

Test to make sure we don't generate unwind info for non-64-bit Objective-C.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43102 91177308-0d34-0410-b5e6-96231b3b80d8

ImutAVLTree now allocates tree nodes from the BumpPtrAllocator using
the new type-aligned Allocate() method.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43100 91177308-0d34-0410-b5e6-96231b3b80d8

Removed inclusion of cassert, which is no longer needed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43099 91177308-0d34-0410-b5e6-96231b3b80d8

Minor cosmetic cleanups in the calculation of alignments for
StringMapEntry objects.  No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43097 91177308-0d34-0410-b5e6-96231b3b80d8

Added template function alignof() which provides a clean
function-based interface to getting the alignment of a type.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43096 91177308-0d34-0410-b5e6-96231b3b80d8

Reverting unnecessary commit of generated files.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43095 91177308-0d34-0410-b5e6-96231b3b80d8

Switching TargetMachineRegistry to use the new generic Registry.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43094 91177308-0d34-0410-b5e6-96231b3b80d8

Updated StringMap to use llvm::AlignOf to compute the alignment of map
entries.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43089 91177308-0d34-0410-b5e6-96231b3b80d8

Ignoring test/Transforms/LoopIndexSplit/Output.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43088 91177308-0d34-0410-b5e6-96231b3b80d8

Added member template functions to MallocAllocator and
BumpPtrAllocator that implement allocations that return a properly
typed pointer.  For BumpPtrAllocator, the allocated memory is
automatically aligned to the minimum alignment of the type (as
calculated by llvm::AlignOf::Alignment).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43087 91177308-0d34-0410-b5e6-96231b3b80d8

Added llvm::AlignOf, a template class whose purpose is to portably
compute the minimum memory alignment of arbitrary types.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43086 91177308-0d34-0410-b5e6-96231b3b80d8

Do not raise free() call that is called through invoke instruction.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43083 91177308-0d34-0410-b5e6-96231b3b80d8