Re-apply 40504, but with a fix for the segfault it caused in oggenc:
Make the alignedload and alignedstore patterns always require 16-byte
alignment. This way when they are used in the "Fs" instructions, in which
a vector instruction is used for a scalar purpose, they can still require
the full vector alignment. And add a regression test for this.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40555 91177308-0d34-0410-b5e6-96231b3b80d8

It seems logical that InReg should be incompatible
with StructReturn and ByVal, so make it so.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40554 91177308-0d34-0410-b5e6-96231b3b80d8

As the number of parameter attributes increases,
Verifier::visitFunction is suffering a combinatorial
explosion due to the number of mutually incompatible
attributes.  This patch tidies the whole thing up
using attribute masks.  While there I fixed some
small bugs: (1) the ByVal attribute tests cast a
type to a pointer type, which can fail.  Yes, the
fact it is of a pointer type is checked before,
but a failing check does not cause the program
to exit, it continues on outputting further errors;
(2) Nothing was checking that an sret attribute is
on the first parameter; (3) nothing was checking that
a function for which isStructReturn() is true has a
parameter with the sret attribute and vice-versa (I
don't think it is possible for this to go wrong, but
it seems right to check it).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40553 91177308-0d34-0410-b5e6-96231b3b80d8

Support for trampolines, except for X86 codegen which is
still under discussion.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40549 91177308-0d34-0410-b5e6-96231b3b80d8

Move subreg lowering pass to be right after regalloc, per feedback.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40548 91177308-0d34-0410-b5e6-96231b3b80d8

Reverting 40504 for now. It's breaking oggenc.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40547 91177308-0d34-0410-b5e6-96231b3b80d8

Fix thinko. Update return status appropriately.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40546 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a bug introduced in my last commit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40542 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a couple more bugs in the phi construction by pulling in code that does
almost the same things from LCSSA.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40540 91177308-0d34-0410-b5e6-96231b3b80d8

Test case for PR1573.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40539 91177308-0d34-0410-b5e6-96231b3b80d8

Make sure epilogue esp adjustment is placed before any terminator and pop instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40538 91177308-0d34-0410-b5e6-96231b3b80d8

Don't pollute the meaning of isUnpredicatedTerminator.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40537 91177308-0d34-0410-b5e6-96231b3b80d8

Fix test.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40536 91177308-0d34-0410-b5e6-96231b3b80d8

Minor bug.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40535 91177308-0d34-0410-b5e6-96231b3b80d8

Fix the alias analysis query in DAGCombiner to not add in two
offsets. The SrcValueOffset values are the real offsets from the
SrcValue base pointers.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40534 91177308-0d34-0410-b5e6-96231b3b80d8

Move the GET_SIDE_EFFECT_INFO logic from isInstructionTriviallyDead
to Instruction::mayWriteToMemory, fixing a FIXME, and helping
various places that call mayWriteToMemory directly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40533 91177308-0d34-0410-b5e6-96231b3b80d8

Remove a bogus return statement, what appears to have been a pasto
from Relation::contradicts in Relation::incorporate.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40531 91177308-0d34-0410-b5e6-96231b3b80d8

DummyInst's member functions don't need to be virtual.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40530 91177308-0d34-0410-b5e6-96231b3b80d8

In the .loc directive, print the fields as "debug" fields, so they
don't get decorated as if for immediate fields for instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40529 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a whitespace difference between CMPSSrr and CMPSDrr.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40528 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a pasto in a comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40527 91177308-0d34-0410-b5e6-96231b3b80d8

Add a MachineFunction pass, which runs post register allocation, that turns subreg insert/extract instruction into register copies. This ensures correct code gen if the coalescer isn't able to remove all subreg instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40521 91177308-0d34-0410-b5e6-96231b3b80d8

Teach DAG scheduling how to properly emit subreg insert/extract machine instructions. PR1350

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40520 91177308-0d34-0410-b5e6-96231b3b80d8

Have register info provide the inverse mapping of register->superregisters. PR1350

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40519 91177308-0d34-0410-b5e6-96231b3b80d8

Add target independent MachineInstr's to represent subreg insert/extract in MBB's. PR1350

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40518 91177308-0d34-0410-b5e6-96231b3b80d8

Same goes for constantpool, etc.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40517 91177308-0d34-0410-b5e6-96231b3b80d8

Add selection DAG nodes for subreg insert/extract. PR1350

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40516 91177308-0d34-0410-b5e6-96231b3b80d8

Fix 80 col violation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40515 91177308-0d34-0410-b5e6-96231b3b80d8

Remove subreg index from MachineInstr's and also keep vregs as unsigned when adding operands.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40514 91177308-0d34-0410-b5e6-96231b3b80d8

Teach TableGen about the new vector types.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40513 91177308-0d34-0410-b5e6-96231b3b80d8

Fix infinite recursion for when extract_vector_elt is legal. Unfortunately no public targets use this code-path, so no test.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40510 91177308-0d34-0410-b5e6-96231b3b80d8

Fix comments for new types.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40507 91177308-0d34-0410-b5e6-96231b3b80d8

Add support for 3 element 32-bit vector ValueTypes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40506 91177308-0d34-0410-b5e6-96231b3b80d8

Remove X86ISD::LOAD_PACK and X86ISD::LOAD_UA and associated code from the
x86 target, replacing them with the new alignment attributes on memory
references.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40504 91177308-0d34-0410-b5e6-96231b3b80d8

Fix what is _hopefully_ the last corner case for loops.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40503 91177308-0d34-0410-b5e6-96231b3b80d8

Mac OS X x86-64 lower 4G address is not available.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40502 91177308-0d34-0410-b5e6-96231b3b80d8

Mac OS X should use 0x90 to fill in gaps to satisfy function alignment requirements.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40501 91177308-0d34-0410-b5e6-96231b3b80d8

EmitAlignment() also emits optional fill value.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40500 91177308-0d34-0410-b5e6-96231b3b80d8

Functions with LinkOnce and weak linkage still need to be aligned. Doh.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40499 91177308-0d34-0410-b5e6-96231b3b80d8

My last commit was not correct for nested loops.  Fix it, and add a testcase for it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40498 91177308-0d34-0410-b5e6-96231b3b80d8

Fix an infinite loop on 300.twolf.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40497 91177308-0d34-0410-b5e6-96231b3b80d8

Forgot to include this file in my last commit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40496 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a bug in non-local memdep that was causing an infinite loop on 175.vpr.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40495 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a bug that was causing GVN to crash on 252.eon.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40494 91177308-0d34-0410-b5e6-96231b3b80d8

Fix example code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40493 91177308-0d34-0410-b5e6-96231b3b80d8

Add basic support for performing whole-function RLE.
Note: This has not yet been thoroughly tested.  Use at your own risk.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40489 91177308-0d34-0410-b5e6-96231b3b80d8

Moving regression test to reflect move in source and headers to Bitcode.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40488 91177308-0d34-0410-b5e6-96231b3b80d8

Don't ignore the return value of AsmPrinter::doInitialization and
AsmPrinter::doFinalization.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40487 91177308-0d34-0410-b5e6-96231b3b80d8

Add BasicInliner interface.
This interface allows clients to inline bunch of functions with module
level call graph information.:wq

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40486 91177308-0d34-0410-b5e6-96231b3b80d8

test commit

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40484 91177308-0d34-0410-b5e6-96231b3b80d8

Fix debug info and globals filled with zeros.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40483 91177308-0d34-0410-b5e6-96231b3b80d8

Minor cleanup:
 - Split EH and debug infiormation
 - Make DwarfWriter more verbose in some cases

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40481 91177308-0d34-0410-b5e6-96231b3b80d8

Add const to CanBeFoldedBy, CheckAndMask, and CheckOrMask.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40480 91177308-0d34-0410-b5e6-96231b3b80d8

A minor simplication in the generated code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40479 91177308-0d34-0410-b5e6-96231b3b80d8

Use movaps to load a v4f32 build_vector of all-constant values into a
register instead of loading each element individually.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40478 91177308-0d34-0410-b5e6-96231b3b80d8

Add initial support for non-local memory dependence analysis.
NOTE: This has only been cursorily tested.  Expected improvements soon.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40476 91177308-0d34-0410-b5e6-96231b3b80d8

Make the copy constructor of SmallPtrSet much faster.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40474 91177308-0d34-0410-b5e6-96231b3b80d8

Heal EH handling stuff by emitting correct offsets to callee-saved registers.

Pretty hackish, but code itself is dirty mess, so we won't make anything worse. :)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40472 91177308-0d34-0410-b5e6-96231b3b80d8

Add a GVN pass, using the value numbering code I developed for GVNPRE and the
load elimination code from RedundantLoadElimination.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40469 91177308-0d34-0410-b5e6-96231b3b80d8

Make output match actual condition tested. Thanks, Duncan.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40464 91177308-0d34-0410-b5e6-96231b3b80d8

Unreachable block is not a root node in post dominator tree.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40458 91177308-0d34-0410-b5e6-96231b3b80d8

Rename a lot of things to change FastDLE to RedundantLoadElimination.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40457 91177308-0d34-0410-b5e6-96231b3b80d8

Rename FastDLE as RedundantLoadElimination.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40456 91177308-0d34-0410-b5e6-96231b3b80d8

1. Make sure we print the Function Value for parameter attribute errors
2. Fold an if statement into the Assert1 macro call.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40455 91177308-0d34-0410-b5e6-96231b3b80d8

Add better verification of attributes on function types. It is not permitted
to use sret or inreg on the function. It is equally illegal to use noreturn
or nounwind on a parameter; they only go with the function. This patch
enforces these rules.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40453 91177308-0d34-0410-b5e6-96231b3b80d8

Fix for PR1567, which involves a weird bug on non-32bit architectures and silly C type sizes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40451 91177308-0d34-0410-b5e6-96231b3b80d8

Add testcases for FastDLE.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40449 91177308-0d34-0410-b5e6-96231b3b80d8

Don't delete volatile loads.  Doing so is not safe.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40448 91177308-0d34-0410-b5e6-96231b3b80d8

Forgot to commit this file.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40447 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40446 91177308-0d34-0410-b5e6-96231b3b80d8

Add FastDLE, the load-elimination counterpart of FastDSE.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40445 91177308-0d34-0410-b5e6-96231b3b80d8

Move these tests to use FastDSE instead of old DSE.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40444 91177308-0d34-0410-b5e6-96231b3b80d8

Fix some uses of dyn_cast to be uses of cast.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40443 91177308-0d34-0410-b5e6-96231b3b80d8

Delete the svn:executable property on these files, which aren't executable.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40441 91177308-0d34-0410-b5e6-96231b3b80d8

Fix file header.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40440 91177308-0d34-0410-b5e6-96231b3b80d8

completely remove a transformation that is unsafe in the face of
undefs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40439 91177308-0d34-0410-b5e6-96231b3b80d8

The Ada f-e produces various auxiliary output files
that cannot be suppressed and cannot be redirected:
they are dumped in the current working directory.
When running the testsuite this means that these
files do not end up in the Output directory.  The
best solution I could find is to change directory
into Output before running tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40437 91177308-0d34-0410-b5e6-96231b3b80d8

For multipart tests, place the parts with no
RUN line in Support.  Give up on sending output
to /dev/null - this cannot always be arranged.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40436 91177308-0d34-0410-b5e6-96231b3b80d8

Restore ability to build archives (oops)
Fix -include line so it doesn't reference /dev/null

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40429 91177308-0d34-0410-b5e6-96231b3b80d8

Remove bizarre use of /dev/null in a makefile include line that
produces warning from make about bad timestamp on /dev/null

Patch by Holger Schurig.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40426 91177308-0d34-0410-b5e6-96231b3b80d8

Fix some validation errors.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40417 91177308-0d34-0410-b5e6-96231b3b80d8

Converted to "svn" and reformatted.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40416 91177308-0d34-0410-b5e6-96231b3b80d8

Remove dead option.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40415 91177308-0d34-0410-b5e6-96231b3b80d8

Small change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40413 91177308-0d34-0410-b5e6-96231b3b80d8

Point to the correct SVN repository.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40412 91177308-0d34-0410-b5e6-96231b3b80d8

Add missing SSE builtins:

    __builtin_ia32_cvtss2si64
    __builtin_ia32_cvttss2si64
    __builtin_ia32_cvtsi642ss
    __builtin_ia32_cvtsd2si64
    __builtin_ia32_cvttsd2si64
    __builtin_ia32_cvtsi642sd

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40411 91177308-0d34-0410-b5e6-96231b3b80d8

Report an error if one occurs in releaseModule.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40405 91177308-0d34-0410-b5e6-96231b3b80d8

Disable the string map copy ctor and assignment operators,
they don't do the right thing.

Implement StringMap::erase.

Fix a nasty bug in the default ctor.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40395 91177308-0d34-0410-b5e6-96231b3b80d8

Remove -O1 in favour of making llvm-gcc-4.2 a bit
smarter.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40391 91177308-0d34-0410-b5e6-96231b3b80d8

This xform isn't safe, removing it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40378 91177308-0d34-0410-b5e6-96231b3b80d8

Update for changes in library.sh

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40371 91177308-0d34-0410-b5e6-96231b3b80d8

Apply temporary work around to fix llvm mis-compilation
reported in PR 1556.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40133 91177308-0d34-0410-b5e6-96231b3b80d8

No more noResults.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40132 91177308-0d34-0410-b5e6-96231b3b80d8

Don't assume that only Uses can be kills. Defs are marked as kills initially
when there are no uses. This fixes a dangling-pointer bug, where pointers to
deleted instructions were not removed from kills lists. More info here:
http://lists.cs.uiuc.edu/pipermail/llvmdev/2007-July/009749.html

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40131 91177308-0d34-0410-b5e6-96231b3b80d8

Simplify the logic for setVolatile.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40130 91177308-0d34-0410-b5e6-96231b3b80d8

Need -O1 or better to have these builtins lowered to
llvm intrinsics in llvm-gcc-4.2.  This is because
get_pointer_alignment bails out: it relies on TER
to compute accurate alignment information.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40128 91177308-0d34-0410-b5e6-96231b3b80d8

zext(undef) = 0 and sext(undef) = 0, not undef.
This hopefully fixes a miscompilation of TargetData.cpp when self hosting.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40125 91177308-0d34-0410-b5e6-96231b3b80d8

this xform is already done by the constant folder.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40124 91177308-0d34-0410-b5e6-96231b3b80d8

Added -print-emitted-asm to print out JIT generated asm to cerr.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40123 91177308-0d34-0410-b5e6-96231b3b80d8

Update to include clean and install commands.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40119 91177308-0d34-0410-b5e6-96231b3b80d8