Undo a wrong bit in that last patch.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45327 91177308-0d34-0410-b5e6-96231b3b80d8

Document a more robust implementation of performCustomLowering.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45326 91177308-0d34-0410-b5e6-96231b3b80d8

fix some warnings.  This code needs to be de-tabified :(

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45325 91177308-0d34-0410-b5e6-96231b3b80d8

fix strict-aliasing violation

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45324 91177308-0d34-0410-b5e6-96231b3b80d8

initial code for forming an FGETSIGN node. This is disabled until
legalizer support goes in.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45323 91177308-0d34-0410-b5e6-96231b3b80d8

improve support for fgetsign

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45322 91177308-0d34-0410-b5e6-96231b3b80d8

Tell TargetLoweringOpt whether it is running before
or after legalize.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45321 91177308-0d34-0410-b5e6-96231b3b80d8

Add a new FGETSIGN operation, which defaults to expand on all
targets.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45320 91177308-0d34-0410-b5e6-96231b3b80d8

Erm, really disable :)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45319 91177308-0d34-0410-b5e6-96231b3b80d8

Disable, until we'll really need it

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45318 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a partial application typo.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45317 91177308-0d34-0410-b5e6-96231b3b80d8

Use getIntrinsicID instead of looking up intrinsic prototypes. Also
fixes a bug with indirect calls. (Test case will be included with
ocaml collector patch.)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45316 91177308-0d34-0410-b5e6-96231b3b80d8

Unbreak build on gcc 3.x

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45315 91177308-0d34-0410-b5e6-96231b3b80d8

Unbreak mingw build

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45314 91177308-0d34-0410-b5e6-96231b3b80d8

Preliminary PIC JIT support for X86 (32-bit) / Darwin.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45313 91177308-0d34-0410-b5e6-96231b3b80d8

Oops.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45312 91177308-0d34-0410-b5e6-96231b3b80d8

implement InstCombine/shift-trunc-shift.ll.  This allows
us to compile:
#include <math.h>
int t1(double d) { return signbit(d); }

into:

_t1:
movd %xmm0, %rax
shrq $63, %rax
ret

instead of:

_t1:
movd %xmm0, %rax
shrq $32, %rax
shrl $31, %eax
ret

on x86-64.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45311 91177308-0d34-0410-b5e6-96231b3b80d8

Note what still needs doing.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45310 91177308-0d34-0410-b5e6-96231b3b80d8

Remove critical edge breaking.  It won't be necessary as long as we are very careful when inserting copies.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45309 91177308-0d34-0410-b5e6-96231b3b80d8

Ignoring generated files.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45308 91177308-0d34-0410-b5e6-96231b3b80d8

Fix JIT code emission of X86::MovePCtoStack.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45307 91177308-0d34-0410-b5e6-96231b3b80d8

If succ has succ itself as one of the predecessors then do
not merge current bb and succ even if bb's terminator is
unconditional branch to succ.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45305 91177308-0d34-0410-b5e6-96231b3b80d8

Allow JIT with non-static relocation model.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45304 91177308-0d34-0410-b5e6-96231b3b80d8

Fix silly typo in the FP CEP handling.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45300 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a brain fart by our beloved leader (the content
of this patch is the last line).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45289 91177308-0d34-0410-b5e6-96231b3b80d8

Get the verifier to check attributes on calls as well
as on functions.  Make it verify invokes and not just
ordinary calls.  As a (desired) side-effect, it is no
longer legal to have call attributes on arguments that
are being passed to the varargs part of a varargs
function (llvm-as drops them on the floor anyway).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45286 91177308-0d34-0410-b5e6-96231b3b80d8

Make DAE not wipe out attributes on calls, and not drop
return attributes on the floor.  In the case of a call
to a varargs function where the varargs arguments are
being removed, any call attributes on those arguments
need to be dropped.  I didn't do this because I plan to
make it illegal to have such attributes (see next patch).
With this change, compiling the gcc filter2 eh test at -O0
and then running opt -std-compile-opts on it results in
a correctly working program (compiling at -O1 or higher
results in the test failing due to a problem with how we
output eh info into the IR).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45285 91177308-0d34-0410-b5e6-96231b3b80d8

Fix unintented change from last commit

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45282 91177308-0d34-0410-b5e6-96231b3b80d8

Enable EH for linux/ppc32 targets

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45281 91177308-0d34-0410-b5e6-96231b3b80d8

New entry.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45280 91177308-0d34-0410-b5e6-96231b3b80d8

Add a few more missing gcc builtin's.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45278 91177308-0d34-0410-b5e6-96231b3b80d8

Removed scoped_ptr, as its functionality is subsumed by OwningPtr.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45274 91177308-0d34-0410-b5e6-96231b3b80d8

Fix JIT encoding for CMPSD as well.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45268 91177308-0d34-0410-b5e6-96231b3b80d8

Added OwningArrayPtr smart pointer class to provide an analogous class to
OwningPtr except that it works for pointers to arrays.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45266 91177308-0d34-0410-b5e6-96231b3b80d8

add new smart pointer for clang.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45261 91177308-0d34-0410-b5e6-96231b3b80d8

Type specification didn't match gcc's.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45260 91177308-0d34-0410-b5e6-96231b3b80d8

More accurate checks for two-address constraints.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45259 91177308-0d34-0410-b5e6-96231b3b80d8

Implement review feedback, including additional transforms

(icmp slt (sub A B) 1) -> (icmp sle A B)
icmp sgt (sub A B) -1) -> (icmp sge A B)

and add testcase.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45256 91177308-0d34-0410-b5e6-96231b3b80d8

Add m_Zero().

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45255 91177308-0d34-0410-b5e6-96231b3b80d8

Remove xfail. This is fixed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45254 91177308-0d34-0410-b5e6-96231b3b80d8

The physical register + virtual register joining requirement was much too strict.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45253 91177308-0d34-0410-b5e6-96231b3b80d8

Bring back a burr scheduling heuristic that's still needed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45252 91177308-0d34-0410-b5e6-96231b3b80d8

Clean up previous patch: PHI uses should not prevent iv reuse if all other uses are addresses. This trades a constant multiply for one fewer iv.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45251 91177308-0d34-0410-b5e6-96231b3b80d8

simplify this code with the new m_Zero() pattern.  Make sure the select only
has a single use, and generalize it to not require N to be a constant.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45250 91177308-0d34-0410-b5e6-96231b3b80d8

Revert my previous check-in.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45249 91177308-0d34-0410-b5e6-96231b3b80d8

More eye-candy stuff :)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45247 91177308-0d34-0410-b5e6-96231b3b80d8

Add iterators for child traversal.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45246 91177308-0d34-0410-b5e6-96231b3b80d8

Updated comments to reflect what "side effects" means in this situation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45245 91177308-0d34-0410-b5e6-96231b3b80d8

More working CellSPU tests:
- vec_const.ll: Vector constant loads
- immed64.ll: i64, f64 constant loads

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45242 91177308-0d34-0410-b5e6-96231b3b80d8

Add lto version check mechanism.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45238 91177308-0d34-0410-b5e6-96231b3b80d8

Use a module to group calling convention values, too.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45236 91177308-0d34-0410-b5e6-96231b3b80d8

Allow iv reuse if the user is a PHI node which is in turn used as addresses.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45230 91177308-0d34-0410-b5e6-96231b3b80d8

Using modules to group enumerations in Ocaml bindings.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45229 91177308-0d34-0410-b5e6-96231b3b80d8

Adding bindings for memory buffers and module providers. Switching
to exceptions rather than variants for error handling in Ocaml.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45226 91177308-0d34-0410-b5e6-96231b3b80d8

Enable EH on PPC Darwin.  This basically works; there
are a couple of issues that show up with the optimizer,
but I don't think they're really EH problems.
(llvm-gcc testsuite users note:  By default the testsuite
uses the unwinding code that's built as part of your local
llvm-gcc, which does not work.  You need to trick it into
using the installed system unwinding code to get useful
results.)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45221 91177308-0d34-0410-b5e6-96231b3b80d8

CellSPU testcase, extract_elt.ll: extract vector element.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45219 91177308-0d34-0410-b5e6-96231b3b80d8

When inlining through an 'nounwind' call, mark inlined
calls 'nounwind'.  It is important for correct C++
exception handling that nounwind markings do not get
lost, so this transformation is actually needed for
correctness.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45218 91177308-0d34-0410-b5e6-96231b3b80d8

More working CellSPU test cases:
- call.ll: Function call
- ctpop.ll: Count population
- dp_farith.ll: DP arithmetic
- eqv.ll: Equivalence primitives
- fcmp.ll: SP comparisons
- fdiv.ll: SP division
- fneg-fabs.ll: SP negation, aboslute value
- int2fp.ll: Integer -> SP conversion
- rotate_ops.ll: Rotation primitives
- select_bits.ll: (a & c) | (b & ~c) bit selection
- shift_ops.ll: Shift primitives
- sp_farith.ll: SP arithmentic

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45217 91177308-0d34-0410-b5e6-96231b3b80d8

Two more test cases: or_ops.ll (arithmetic or operations) and vecinsert.ll
(vector insertions)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45216 91177308-0d34-0410-b5e6-96231b3b80d8

fix formatting

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45214 91177308-0d34-0410-b5e6-96231b3b80d8

Simplify LowerCallTo by using a callsite.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45198 91177308-0d34-0410-b5e6-96231b3b80d8

The C++ exception handling personality function wants
to know about calls that cannot throw ('nounwind'):
if such a call does throw for some reason then the
personality will terminate the program.  The distinction
between an ordinary call and a nounwind call is that
an ordinary call gets an entry in the exception table
but a nounwind call does not.  This patch sets up the
exception table appropriately.  One oddity is that
I've chosen to bracket nounwind calls with labels (like
invokes) - the other choice would have been to bracket
ordinary calls with labels.  While bracketing
ordinary calls is more natural (because bracketing
by labels would then correspond exactly to getting an
entry in the exception table), I didn't do it because
introducing labels impedes some optimizations and I'm
guessing that ordinary calls occur more often than
nounwind calls.  This fixes the gcc filter2 eh test,
at least at -O0 (the inliner needs some tweaking at
higher optimization levels).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45197 91177308-0d34-0410-b5e6-96231b3b80d8

Add new immed16.ll test case, fix CellSPU errata to make test case work.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45196 91177308-0d34-0410-b5e6-96231b3b80d8

Modified to support comments better.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45192 91177308-0d34-0410-b5e6-96231b3b80d8

Mark the "isRemat" instruction as never having side effects.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45190 91177308-0d34-0410-b5e6-96231b3b80d8

fix more table abuses.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45187 91177308-0d34-0410-b5e6-96231b3b80d8

Don't leave newly created nodes around if it turns out they are not needed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45186 91177308-0d34-0410-b5e6-96231b3b80d8

Added "GetCurrentDirectory()" to sys::Path.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45182 91177308-0d34-0410-b5e6-96231b3b80d8

Add debugging info. Use the newly created "hasUnmodelledSideEffects" method.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45178 91177308-0d34-0410-b5e6-96231b3b80d8

Fold subtracts into integer compares vs. zero. This improves generate code for this case on X86
from
_foo:
        movl    $99, %ecx
        movl    4(%esp), %eax
        subl    %eax, %ecx
        xorl    %edx, %edx
        testl   %ecx, %ecx
        cmovs   %edx, %eax
        ret

to
_foo:
        xorl    %ecx, %ecx
        movl    4(%esp), %eax
        cmpl    $99, %eax
        cmovg   %ecx, %eax
        ret

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45173 91177308-0d34-0410-b5e6-96231b3b80d8

Support more insane CEP's in AsmPrinter (Yes, PyPy folks do really use them).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45172 91177308-0d34-0410-b5e6-96231b3b80d8

Fix comments

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45170 91177308-0d34-0410-b5e6-96231b3b80d8

Remove an orthogonal transformation of the selection condition from my most recent submission.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45169 91177308-0d34-0410-b5e6-96231b3b80d8

Added "isDirectory" method to llvm::sys::Path.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45168 91177308-0d34-0410-b5e6-96231b3b80d8

Fix PR1872: SrcValue and SrcValueOffset should not be used to compute load / store node id.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45167 91177308-0d34-0410-b5e6-96231b3b80d8

Ignore shell scripts when doing "dsymutil" call.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45166 91177308-0d34-0410-b5e6-96231b3b80d8

remove obviously dead uses of IncludeFile.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45165 91177308-0d34-0410-b5e6-96231b3b80d8

Also print alignment and volatileness.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45164 91177308-0d34-0410-b5e6-96231b3b80d8

remove a dead annotation

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45163 91177308-0d34-0410-b5e6-96231b3b80d8

Added some sectioning comments to Serialize.h.
Added additional serialization functors for use with std::foreach.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45162 91177308-0d34-0410-b5e6-96231b3b80d8

add an obvious load folding missed optzn.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45161 91177308-0d34-0410-b5e6-96231b3b80d8

Rename isNoReturn to doesNotReturn, and isNoUnwind to
doesNotThrow.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45160 91177308-0d34-0410-b5e6-96231b3b80d8

Fix typos.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45159 91177308-0d34-0410-b5e6-96231b3b80d8

Fold certain additions through selects (and their compares) so as to eliminate subtractions. This code is often produced by the SMAX expansion in SCEV.

This implements test/Transforms/InstCombine/2007-12-18-AddSelCmpSub.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45158 91177308-0d34-0410-b5e6-96231b3b80d8

FIX for PR1799: When a load is unfolded from an instruction, check if it is a new node. If not, do not create a new SUnit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45157 91177308-0d34-0410-b5e6-96231b3b80d8

SelectionDAG::dump() should print SrcValue of LoadSDNode and StoreSDNode.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45151 91177308-0d34-0410-b5e6-96231b3b80d8

avoid confusing terminology (what is a "word"?), fix scary markup, add section to TOC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45150 91177308-0d34-0410-b5e6-96231b3b80d8

Don't forget to print address space qualifiers when printing out the type table! Thanks to Gordon Henriksen for pointing this out.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45147 91177308-0d34-0410-b5e6-96231b3b80d8

Testcase for preceding FE fix

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45144 91177308-0d34-0410-b5e6-96231b3b80d8

add a missed case.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45141 91177308-0d34-0410-b5e6-96231b3b80d8

Remove int_x86_sse2_movl_dq. It's replaced with a string compare.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45140 91177308-0d34-0410-b5e6-96231b3b80d8

These have matching builtin's in 4.2.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45139 91177308-0d34-0410-b5e6-96231b3b80d8

i32 immediate constant test case for CellSPU

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45134 91177308-0d34-0410-b5e6-96231b3b80d8

s/hasSideEffects/hasUnmodelledSideEffects/g

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45133 91177308-0d34-0410-b5e6-96231b3b80d8

Add "mayHaveSideEffects" and "neverHasSideEffects" flags to some instructions. I
based what flag to set on whether it was already marked as
"isRematerializable". If there was a further check to determine if it's "really"
rematerializable, then I marked it as "mayHaveSideEffects" and created a check
in the X86 back-end similar to the remat one.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45132 91177308-0d34-0410-b5e6-96231b3b80d8

Bring back int_x86_sse2_movl_dq intrinsic for backward compatibility. Make sure
it's auto-upgraded to a shufflevector instruction.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45131 91177308-0d34-0410-b5e6-96231b3b80d8

- Restore some i8 functionality in CellSPU
- New test case: nand.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45130 91177308-0d34-0410-b5e6-96231b3b80d8

Modified Deserializer::ReadCStr to allow C-strings to be read into a
std::vector<char> starting from any index in the vector.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45129 91177308-0d34-0410-b5e6-96231b3b80d8

LD_Fp64m should have "isRematerializable" set.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45128 91177308-0d34-0410-b5e6-96231b3b80d8

Add "hasSideEffects" method to MachineInstrInfo class.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45126 91177308-0d34-0410-b5e6-96231b3b80d8