- Reapply r106066 now that the bzip2 build regression has been fixed.
- 2010-06-25-CoalescerSubRegDefDead.ll is the testcase for r106878.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106880 91177308-0d34-0410-b5e6-96231b3b80d8

We should remove the live range from the destination register only if *all* defs
are dead, not just the def of this register. I.e., a register could be dead, but
it's subreg isn't.

Testcase to follow with a subsequent patch.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106878 91177308-0d34-0410-b5e6-96231b3b80d8

Move the last piece of SSE2 convert instructions to the Convert Instructions section

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106877 91177308-0d34-0410-b5e6-96231b3b80d8

More SSE refactoring, this time with different types of MOVs

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106876 91177308-0d34-0410-b5e6-96231b3b80d8

Eliminate a redundant FoldingSet lookup.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106872 91177308-0d34-0410-b5e6-96231b3b80d8

IT instructions are considered to be scheduling hazards, but are scheduled
with the following instructions. This is done via trickery by considering the
instruction preceding the IT to be the hazard. Care must be taken to ensure
it's the first non-debug instruction, or the presence of debug info will
affect codegen.

Part of the continuing work for rdar://7797940, making ARM code-gen unaffected
by the presence of debug information.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106871 91177308-0d34-0410-b5e6-96231b3b80d8

Refactoring of more SSE conversion instructions. Also add some AVX instrinsics Int_V... placeholders

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106867 91177308-0d34-0410-b5e6-96231b3b80d8

Cosmetic.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106865 91177308-0d34-0410-b5e6-96231b3b80d8

XFAIL this test on powerpc for now.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106862 91177308-0d34-0410-b5e6-96231b3b80d8

Fix LLVM CMake PACKAGE_VERSION variable.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106861 91177308-0d34-0410-b5e6-96231b3b80d8

Rewrite MemoryBuffer::getSTDIN to use read(2) and a SmallVector buffer.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106856 91177308-0d34-0410-b5e6-96231b3b80d8

Remove variables which are assigned to but for which the value
is not used.  Spotted by gcc-4.6.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106854 91177308-0d34-0410-b5e6-96231b3b80d8

Bring back the empty vector workaround I removed in r106839. Looks like MSVC needs it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106841 91177308-0d34-0410-b5e6-96231b3b80d8

Tweak MemoryBuffer to allocate the class itself, the name and possibly the
buffer in the same chunk of memory.

2 less mallocs for every uninitialized MemoryBuffer and 1 less malloc for every
MemoryBuffer pointing to a memory range translate into 20% less mallocs on
clang -cc1 -Eonly Cocoa_h.m.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106839 91177308-0d34-0410-b5e6-96231b3b80d8

use ArgOperand accessors
and CallInst for getting hold
of the intrinsic's arguments

simplify along the way (at least for me this is much more legible now)
Bill, Baldrick or Anton, please review\!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106838 91177308-0d34-0410-b5e6-96231b3b80d8

use ArgOperand API (the simple part)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106837 91177308-0d34-0410-b5e6-96231b3b80d8

use ArgOperand API

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106836 91177308-0d34-0410-b5e6-96231b3b80d8

use ArgOperand API

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106835 91177308-0d34-0410-b5e6-96231b3b80d8

Remove unused variables.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106834 91177308-0d34-0410-b5e6-96231b3b80d8

use ArgOperand API and CallSite to access arguments of CallInst

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106833 91177308-0d34-0410-b5e6-96231b3b80d8

use ArgOperand API and CallSite to access arguments of CallInst

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106829 91177308-0d34-0410-b5e6-96231b3b80d8

use ArgOperand API

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106828 91177308-0d34-0410-b5e6-96231b3b80d8

prune an include

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106827 91177308-0d34-0410-b5e6-96231b3b80d8

use ArgOperand API (one more hunk I could split)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106825 91177308-0d34-0410-b5e6-96231b3b80d8

use ArgOperand API (some hunks I could split)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106824 91177308-0d34-0410-b5e6-96231b3b80d8

use ArgOperand API; tighten type of handleFreeWithNonTrivialDependency to be able to use isFreeCall whithout a cast or new overload

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106823 91177308-0d34-0410-b5e6-96231b3b80d8

Add missing ARM and Thumb data layout info for vector types.
Radar 8128745.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106820 91177308-0d34-0410-b5e6-96231b3b80d8

Reduce indentation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106819 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a case where an earlyclobber operand of an asm
is reused as an input.  PR 4118.  Testcase is too big,
as usual with bugs in this area, but there's one in
the PR.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106816 91177308-0d34-0410-b5e6-96231b3b80d8

Add some AVX convert instructions

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106815 91177308-0d34-0410-b5e6-96231b3b80d8

Make sure all eliminated kills are removed from VNInfo lists.

This fixes PR7479 and PR7485. The test cases from those PRs are big, so not
included. However, PR7485 comes from self hosting on FreeBSD, so we will surely
hear about any regression.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106811 91177308-0d34-0410-b5e6-96231b3b80d8

Don't write an output file to cwd, and put an rdar prefix on
an rdar number.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106810 91177308-0d34-0410-b5e6-96231b3b80d8

Add some comments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106809 91177308-0d34-0410-b5e6-96231b3b80d8

Refactoring of SSE convert intrinsics

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106808 91177308-0d34-0410-b5e6-96231b3b80d8

Teach EmitLiveInCopies to omit copies for unused virtual registers,
and to clean up unused incoming physregs from the live-in list.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106805 91177308-0d34-0410-b5e6-96231b3b80d8

Refactoring of SSE conversion instructions

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106804 91177308-0d34-0410-b5e6-96231b3b80d8

Change array references to match my previous change to use the public type
names for the array fields.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106803 91177308-0d34-0410-b5e6-96231b3b80d8

DataTypes.h.cmake (MSVC): Protect some #define's and use specific
suffixes for integer types.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106797 91177308-0d34-0410-b5e6-96231b3b80d8

Refactor SSE cmp intrinsics and declare the same for AVX

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106796 91177308-0d34-0410-b5e6-96231b3b80d8

Fix up some comments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106795 91177308-0d34-0410-b5e6-96231b3b80d8

Use the struct tags mandated by ARM's ABI.  Also use the public type names for
the array fields in these structs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106794 91177308-0d34-0410-b5e6-96231b3b80d8

It's possible that a flag is added to the SDNode that points back to the
original SDNode. This is badness. Also, this function allows one SDNode to point
multiple flags to another SDNode. Badness as well.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106793 91177308-0d34-0410-b5e6-96231b3b80d8

DBG_VALUE machine instruction pointing to undefined register for a variable justify a separate scope if the variable is inlined function's argument.
Radar 8122864.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106792 91177308-0d34-0410-b5e6-96231b3b80d8

Don't return a std::vector in the Spiller interface, but take a reference to a
vector instead. This avoids needless copying and allocation.

Add documentation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106788 91177308-0d34-0410-b5e6-96231b3b80d8

- Add AVX COMI{SS,SD}{rr,rm} and UCOMI{SS,SD}{rr,rm}.
- Fix a small VEX encoding issue.
- Move compare instructions to their appropriate place.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106787 91177308-0d34-0410-b5e6-96231b3b80d8

Remove the now unused LiveIntervals::getVNInfoSourceReg().

This method was always a bit too simplistic for the real world. It didn't really
deal with subregisters and such.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106781 91177308-0d34-0410-b5e6-96231b3b80d8

Teach AdjustCopiesBackFrom to also use CoalescerPair to identify compatible copies.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106780 91177308-0d34-0410-b5e6-96231b3b80d8

Disallow matching "i" constraint to symbol addresses when
address requires a register or secondary load to compute
(most PIC modes).  This improves "g" constraint handling.  8015842.

The test from 2007 is attempting to test the fix for PR1761,
but since -relocation-model=static doesn't work on Darwin
x86-64, it was not testing what it was supposed to be testing
and was passing erroneously.  Fixed to use Linux x86-64.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106779 91177308-0d34-0410-b5e6-96231b3b80d8

Silence some unused variable warnings.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106778 91177308-0d34-0410-b5e6-96231b3b80d8

Remove the -fast-spill option.

This code path has never really been used, and we are going to be handling
spilling through the Spiller interface in the future.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106777 91177308-0d34-0410-b5e6-96231b3b80d8

Document problems that I encountered when working on -scev-aa.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106776 91177308-0d34-0410-b5e6-96231b3b80d8

Oops. IT block formation pass needs to be run at any optimization level.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106775 91177308-0d34-0410-b5e6-96231b3b80d8

Loosen up the requirements in the Horrible Hack(tm) to include all selectors
which don't have a catch-all associated with them not just clean-ups. This fixes
the SingleSource/Benchmarks/Shootout-C++/except.cpp testcase that broke because
of my change r105902.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106772 91177308-0d34-0410-b5e6-96231b3b80d8

Always allow Thumb-2 SXTB, SXTH, UXTB, and UXTH.  Fixes PR7324.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106770 91177308-0d34-0410-b5e6-96231b3b80d8

Replace a big gob of old coalescer logic with the new CoalescerPair class.

CoalescerPair can determine if a copy can be coalesced, and which register gets
merged away. The old logic in SimpleRegisterCoalescing had evolved into
something a bit too convoluted.

This second attempt fixes some crashes that only occurred Linux.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106769 91177308-0d34-0410-b5e6-96231b3b80d8

Add an exports file for the Hello example plugin.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106768 91177308-0d34-0410-b5e6-96231b3b80d8

Print the LSBs of a SlotIndex symbolically using letters referring to the
[L]oad, [u]se, [d]ef, or [S]tore slots.

This makes it easier to see if two indices refer to the same instruction,
avoiding mental mod 4 calculations.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106766 91177308-0d34-0410-b5e6-96231b3b80d8

Simplify this code; switch lowering shouldn't produce cases
which trivially fold away.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106765 91177308-0d34-0410-b5e6-96231b3b80d8

A few minor micro-optimizations.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106764 91177308-0d34-0410-b5e6-96231b3b80d8

Teach getExactSDiv to evaluate x/1 to x up front, as it's a common
enough special case, and it theoretically allows more folding because
it works even when x is unanalyzable.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106763 91177308-0d34-0410-b5e6-96231b3b80d8

PR7458: Try commuting Thumb2 instruction operands to put them into 2-address
form so they can be narrowed to 16-bit instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106762 91177308-0d34-0410-b5e6-96231b3b80d8

Edit and clarify comments for TargetInstrInfo methods:

None of the existing implementations of commuteInstruction create new
instructions unless the NewMI parameter is true, but the comment had
implied otherwise.

findCommutedOpIndices returns false, not true, when it doesn't know
how to commute the instruction.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106761 91177308-0d34-0410-b5e6-96231b3b80d8

Don't try to preserve pointer types in SCEVConstants; the old code
was over-complicated.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106760 91177308-0d34-0410-b5e6-96231b3b80d8

Fix copy+pasto issues in isMulSExtable.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106759 91177308-0d34-0410-b5e6-96231b3b80d8

Make the trunc code consistent with the zext and sext code in its
handling of pointer types.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106757 91177308-0d34-0410-b5e6-96231b3b80d8

Add a comment about a thread safety issue in Statistic.h.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106756 91177308-0d34-0410-b5e6-96231b3b80d8

Add overloads for getFile and getFileOrSTDIN which take a const char *
instead of a StringRef, avoiding the need to copy the string in the
common case.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106754 91177308-0d34-0410-b5e6-96231b3b80d8

Be more strict about subreg-to-subreg copies in CoalescerPair.

Also keep track of the original DstREg before subregister adjustments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106753 91177308-0d34-0410-b5e6-96231b3b80d8

use ArgOperand API

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106752 91177308-0d34-0410-b5e6-96231b3b80d8

Verify that VNI kills are pointing to existing instructions.

In this case it is essential that the kill is real because the spiller will
decide to omit a spill if it thinks there is a later kill.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106751 91177308-0d34-0410-b5e6-96231b3b80d8

use (even more, still) ArgOperand API

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106750 91177308-0d34-0410-b5e6-96231b3b80d8

Eliminate the other half of the BRCOND optimization, and update
as many tests as possible.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106749 91177308-0d34-0410-b5e6-96231b3b80d8

Eliminate the first have of the optimization which eliminates BRCOND
when the condition is constant. This optimization shouldn't be
necessary, because codegen shouldn't be able to find dead control
paths that the IR-level optimizer can't find. And it's undesirable,
because it encourages bugpoint to leave "br i1 false" branches
in its output. And it wasn't updating the CFG.

I updated all the tests I could, but some tests are too reduced
and I wasn't able to meaningfully preserve them.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106748 91177308-0d34-0410-b5e6-96231b3b80d8

use ArgOperand API and CallSite for arg range; add necessary casts and perform some cosmetics

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106747 91177308-0d34-0410-b5e6-96231b3b80d8

Reapply r106634, now that the bug it exposed is fixed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106746 91177308-0d34-0410-b5e6-96231b3b80d8

use ArgOperand API and CallSite for arg range

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106745 91177308-0d34-0410-b5e6-96231b3b80d8

use (even more) ArgOperand API

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106744 91177308-0d34-0410-b5e6-96231b3b80d8

use ArgOperand API

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106743 91177308-0d34-0410-b5e6-96231b3b80d8

use ArgOperand API

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106740 91177308-0d34-0410-b5e6-96231b3b80d8

use ArgOperand API

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106737 91177308-0d34-0410-b5e6-96231b3b80d8

use ArgOperand API, also tighten the type of visitFree to make this work out smoothly

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106736 91177308-0d34-0410-b5e6-96231b3b80d8

use ArgOperand API; introduce downcasted pointers into scope to facilitate this

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106734 91177308-0d34-0410-b5e6-96231b3b80d8

use ArgOperand API

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106731 91177308-0d34-0410-b5e6-96231b3b80d8

use ArgOperand API

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106730 91177308-0d34-0410-b5e6-96231b3b80d8

use callsite to obtain all arguments

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106729 91177308-0d34-0410-b5e6-96231b3b80d8

use callsite to obtain all arguments

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106728 91177308-0d34-0410-b5e6-96231b3b80d8

Teach the x86 mc assembler that %dr6 = %db6, this implements
rdar://8013734

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106725 91177308-0d34-0410-b5e6-96231b3b80d8

more cleanups

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106724 91177308-0d34-0410-b5e6-96231b3b80d8

reduce indentation

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106723 91177308-0d34-0410-b5e6-96231b3b80d8

fix breakage from r98938 by correctly marking msp430 calls as variadic.

Patch by Ben Ransford!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106722 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a bug in the code which determines when it's safe to use the
bt instruction, which was exposed by r106263.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106718 91177308-0d34-0410-b5e6-96231b3b80d8

Add a couple more quick comments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106717 91177308-0d34-0410-b5e6-96231b3b80d8

Optimize the "bit test" code path for switch lowering in the
case where the bit mask has exactly one bit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106716 91177308-0d34-0410-b5e6-96231b3b80d8

Revert "Replace a big gob of old coalescer logic with the new CoalescerPair class."

Whiny buildbots.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106710 91177308-0d34-0410-b5e6-96231b3b80d8

use getNumArgOperands

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106709 91177308-0d34-0410-b5e6-96231b3b80d8

use ArgOperand API

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106707 91177308-0d34-0410-b5e6-96231b3b80d8

Use ValueMap instead of DenseMap.
The ValueMapper used by various cloning utility maps MDNodes also.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106706 91177308-0d34-0410-b5e6-96231b3b80d8

Add AVX CMP{SS,SD}{rr,rm} instructions and encoding testcases

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106705 91177308-0d34-0410-b5e6-96231b3b80d8

Move SSE and AVX shuffle, unpack and compare code to more appropriate places

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106702 91177308-0d34-0410-b5e6-96231b3b80d8

Replace a big gob of old coalescer logic with the new CoalescerPair class.

CoalescerPair can determine if a copy can be coalesced, and which register gets
merged away. The old logic in SimpleRegisterCoalescing had evolved into
something a bit too convoluted.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106701 91177308-0d34-0410-b5e6-96231b3b80d8