BUILD_* to PROJ_*

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19598 91177308-0d34-0410-b5e6-96231b3b80d8

Clarify assertion.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19597 91177308-0d34-0410-b5e6-96231b3b80d8

Add assertions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19596 91177308-0d34-0410-b5e6-96231b3b80d8

Add support for promoted registers being live across blocks.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19595 91177308-0d34-0410-b5e6-96231b3b80d8

Update per new Makefile requirements for projects

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19594 91177308-0d34-0410-b5e6-96231b3b80d8

Rename BUILD_* to PROJ_*

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19592 91177308-0d34-0410-b5e6-96231b3b80d8

Update documentation on how to set up a project

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19591 91177308-0d34-0410-b5e6-96231b3b80d8

Several changes:
* Rename BUILD_* to PROJ_*
* Differentiate between LLVM's Makefile.conf and the project's
* Use project specific install locations

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19590 91177308-0d34-0410-b5e6-96231b3b80d8

Several changes:
* Get rid of variables that are duplicates of autoconf variables.
* Rename BUILD_* to PROJ_*
* Define some project related install locations
* Don't assume LLVM's configured values are the project's

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19589 91177308-0d34-0410-b5e6-96231b3b80d8

Make this file capable of being used by both LLVM and its projects

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19588 91177308-0d34-0410-b5e6-96231b3b80d8

Fixed a couple of instructions that broke SSA.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19587 91177308-0d34-0410-b5e6-96231b3b80d8

Improve compatiblity with HPUX on Itanium, patch by Duraid Madina

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19586 91177308-0d34-0410-b5e6-96231b3b80d8

Improve compatibility with aCC on HPUX.  Patch by Duraid Madina

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19585 91177308-0d34-0410-b5e6-96231b3b80d8

Set up identity transforms.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19584 91177308-0d34-0410-b5e6-96231b3b80d8

Move some information into the TargetLowering object.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19583 91177308-0d34-0410-b5e6-96231b3b80d8

Use the new TLI method to get this.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19582 91177308-0d34-0410-b5e6-96231b3b80d8

Move some information out of LegalizeDAG into the generic Target interface.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19581 91177308-0d34-0410-b5e6-96231b3b80d8

legalize a bunch of operations that I missed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19580 91177308-0d34-0410-b5e6-96231b3b80d8

Add support for targets that require promotions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19579 91177308-0d34-0410-b5e6-96231b3b80d8

Fix some serious bugs in promotion.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19578 91177308-0d34-0410-b5e6-96231b3b80d8

Eliminate unneeded extensions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19577 91177308-0d34-0410-b5e6-96231b3b80d8

Implement promotion of a whole bunch more operators.  I think that this is
basically everything.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19576 91177308-0d34-0410-b5e6-96231b3b80d8

Print extra type for nodes with extra type info.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19575 91177308-0d34-0410-b5e6-96231b3b80d8

Add new file to Visual Studio CodeGen project

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19574 91177308-0d34-0410-b5e6-96231b3b80d8

Add support for legalizing FP_ROUND_INREG, SIGN_EXTEND_INREG, and
ZERO_EXTEND_INREG for targets that don't support them.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19573 91177308-0d34-0410-b5e6-96231b3b80d8

Common code factored out.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19572 91177308-0d34-0410-b5e6-96231b3b80d8

implement these methods.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19571 91177308-0d34-0410-b5e6-96231b3b80d8

Add some helper methods.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19570 91177308-0d34-0410-b5e6-96231b3b80d8

Add support for promoting ADD/MUL.
Add support for new SIGN_EXTEND_INREG, ZERO_EXTEND_INREG, and FP_ROUND_INREG operators.
Realize that if we do any promotions, we need to iterate SelectionDAG
construction.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19569 91177308-0d34-0410-b5e6-96231b3b80d8

Add new SIGN_EXTEND_INREG, ZERO_EXTEND_INREG, and FP_ROUND_INREG operators.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19568 91177308-0d34-0410-b5e6-96231b3b80d8

Add a new target-independent code generator flag.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19567 91177308-0d34-0410-b5e6-96231b3b80d8

Add support for truncstore and *extload.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19566 91177308-0d34-0410-b5e6-96231b3b80d8

Add intitial support for promoting some operators.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19565 91177308-0d34-0410-b5e6-96231b3b80d8

Improve output precision.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19564 91177308-0d34-0410-b5e6-96231b3b80d8

We don't distribute the operating system specific directories any more.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19563 91177308-0d34-0410-b5e6-96231b3b80d8

Adjust to CopyFromReg changes, implement deletion of truncating/extending
stores/loads.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19562 91177308-0d34-0410-b5e6-96231b3b80d8

Adjust to CopyFromREg changes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19561 91177308-0d34-0410-b5e6-96231b3b80d8

Change CopyFromReg to take and produce a chain node, allowing it to be used
with physregs that are not live across the entire block.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19560 91177308-0d34-0410-b5e6-96231b3b80d8

Start implementing truncating stores and extending loads.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19559 91177308-0d34-0410-b5e6-96231b3b80d8

Start adding some new operators, give IMPLICIT_DEF a chain operand.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19558 91177308-0d34-0410-b5e6-96231b3b80d8

Fix Regression/CodeGen/PowerPC/2005-01-14-UndefLong.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19557 91177308-0d34-0410-b5e6-96231b3b80d8

New testcase, problem found by Rob.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19556 91177308-0d34-0410-b5e6-96231b3b80d8

Fix: Regression/CodeGen/PowerPC/2005-01-14-SetSelectCrash.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19555 91177308-0d34-0410-b5e6-96231b3b80d8

Testcase that crashes the PPC backend.  Thanks to Rob for finding this.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19554 91177308-0d34-0410-b5e6-96231b3b80d8

Fix some bugs in an xform added yesterday.  This fixes Prolangs-C/allroots.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19553 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a compile crash on spiff

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19552 91177308-0d34-0410-b5e6-96231b3b80d8

Allow the Echo and EchoCmd variables to be overridden.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19551 91177308-0d34-0410-b5e6-96231b3b80d8

Fix the path from ../lib/Debug to ../Debug/lib per changes to Makefiles.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19550 91177308-0d34-0410-b5e6-96231b3b80d8

Improve compatibility with acc

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19549 91177308-0d34-0410-b5e6-96231b3b80d8

Make this compatible with the HP/intel compiler.  Fix by Duraid, thanks!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19548 91177308-0d34-0410-b5e6-96231b3b80d8

Correctly update configure to configure the llvm-java project

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19546 91177308-0d34-0410-b5e6-96231b3b80d8

Fix and improve win32 path validation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19545 91177308-0d34-0410-b5e6-96231b3b80d8

Make asctime_r work for HP/UX.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19544 91177308-0d34-0410-b5e6-96231b3b80d8

More testcases

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19543 91177308-0d34-0410-b5e6-96231b3b80d8

if two gep comparisons only differ by one index, compare that index directly.
This allows us to better optimize begin() -> end() comparisons in common cases.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19542 91177308-0d34-0410-b5e6-96231b3b80d8

Do not overrun iterators.  This fixes a 176.gcc crash

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19541 91177308-0d34-0410-b5e6-96231b3b80d8

Add a method

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19540 91177308-0d34-0410-b5e6-96231b3b80d8

new testcase

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19539 91177308-0d34-0410-b5e6-96231b3b80d8

Add a method

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19538 91177308-0d34-0410-b5e6-96231b3b80d8

Turn select C, (X+Y), (X-Y) --> (X+(select C, Y, (-Y))).  This occurs in
the 'sim' program and probably elsewhere.  In sim, it comes up for cases
like this:

#define round(x) ((x)>0.0 ? (x)+0.5 : (x)-0.5)
double G;
void T(double X) { G = round(X); }

(it uses the round macro a lot).  This changes the LLVM code from:

        %tmp.1 = setgt double %X, 0.000000e+00          ; <bool> [#uses=1]
        %tmp.4 = add double %X, 5.000000e-01            ; <double> [#uses=1]
        %tmp.6 = sub double %X, 5.000000e-01            ; <double> [#uses=1]
        %mem_tmp.0 = select bool %tmp.1, double %tmp.4, double %tmp.6
        store double %mem_tmp.0, double* %G

to:

        %tmp.1 = setgt double %X, 0.000000e+00          ; <bool> [#uses=1]
        %mem_tmp.0.p = select bool %tmp.1, double 5.000000e-01, double -5.000000e-01
        %mem_tmp.0 = add double %mem_tmp.0.p, %X
        store double %mem_tmp.0, double* %G
        ret void

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19537 91177308-0d34-0410-b5e6-96231b3b80d8

Implement an optimization for == and != comparisons like this:

_Bool test2(int X, int Y) {
  return &arr[X][Y] == arr;
}

instead of generating this:

bool %test2(int %X, int %Y) {
        %tmp.3.idx = mul int %X, 160            ; <int> [#uses=1]
        %tmp.3.idx1 = shl int %Y, ubyte 2               ; <int> [#uses=1]
        %tmp.3.offs2 = sub int 0, %tmp.3.idx            ; <int> [#uses=1]
        %tmp.7 = seteq int %tmp.3.idx1, %tmp.3.offs2            ; <bool> [#uses=1]
        ret bool %tmp.7
}

generate this:

bool %test2(int %X, int %Y) {
        seteq int %X, 0         ; <bool>:0 [#uses=1]
        seteq int %Y, 0         ; <bool>:1 [#uses=1]
        %tmp.7 = and bool %0, %1                ; <bool> [#uses=1]
        ret bool %tmp.7
}

This idiom occurs in C++ programs when iterating from begin() to end(),
in a vector or array.  For example, we now compile this:

void test(int X, int Y) {
  for (int *i = arr; i != arr+100; ++i)
    foo(*i);
}

to this:

no_exit:                ; preds = %entry, %no_exit
...
        %exitcond = seteq uint %indvar.next, 100                ; <bool> [#uses=1]
        br bool %exitcond, label %return, label %no_exit

instead of this:

no_exit:                ; preds = %entry, %no_exit
...
        %inc5 = getelementptr [100 x [40 x int]]* %arr, int 0, int 0, int %inc.rec              ; <int*> [#uses=1]
        %tmp.8 = seteq int* %inc5, getelementptr ([100 x [40 x int]]* %arr, int 0, int 100, int 0)              ; <bool> [#uses=1]
        %indvar.next = add uint %indvar, 1              ; <uint> [#uses=1]
        br bool %tmp.8, label %return, label %no_exit

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19536 91177308-0d34-0410-b5e6-96231b3b80d8

Add new ImplicitDef node, rename CopyRegSDNode class to RegSDNode.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19535 91177308-0d34-0410-b5e6-96231b3b80d8

Fix some bugs in code I didn't mean to check in.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19534 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a crash compiling 129.compress

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19533 91177308-0d34-0410-b5e6-96231b3b80d8

Codegen factor nodes more intelligently according to perceived register pressure.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19532 91177308-0d34-0410-b5e6-96231b3b80d8

Don't forget the existing root.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19531 91177308-0d34-0410-b5e6-96231b3b80d8

Update the documentation about -enable-llcbeta vs. -enable-linscan

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19530 91177308-0d34-0410-b5e6-96231b3b80d8

Initial trivial (but stupid) codegen for this node.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19529 91177308-0d34-0410-b5e6-96231b3b80d8

Codegen independent ops as being independent.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19528 91177308-0d34-0410-b5e6-96231b3b80d8

Legalize new node, add assertion.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19527 91177308-0d34-0410-b5e6-96231b3b80d8

Print new node.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19526 91177308-0d34-0410-b5e6-96231b3b80d8

Add a new node type, add comments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19525 91177308-0d34-0410-b5e6-96231b3b80d8

Turn on LOADABLE_MODULE so that profile.so can be loaded dynamically by
the JIT.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19524 91177308-0d34-0410-b5e6-96231b3b80d8

Re-enable libprofile now that llvm-ar is working better.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19523 91177308-0d34-0410-b5e6-96231b3b80d8

Add some really pedantic assertions to the load folding code.  Fix a bunch
of cases where we accidentally emitted a load folded once and unfolded
elsewhere.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19522 91177308-0d34-0410-b5e6-96231b3b80d8

Do not fold (zero_ext (sign_ext V)) -> (sign_ext V), they are not the same.

This fixes llvm-test/SingleSource/Regression/C/casts.c

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19519 91177308-0d34-0410-b5e6-96231b3b80d8

We can only fold a load into an op if there is exactly one use of the value.
Checking to see if the load has two uses is not equivalent, as the chain
value may have zero uses.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19518 91177308-0d34-0410-b5e6-96231b3b80d8

New method

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19517 91177308-0d34-0410-b5e6-96231b3b80d8

New method.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19516 91177308-0d34-0410-b5e6-96231b3b80d8

Fix sign extend to long.  When coming from sbyte, we used to generate:

        movsbl 4(%esp), %eax
        movl %eax, %edx
        sarl $7, %edx

Now we generate:

        movsbl 4(%esp), %eax
        movl %eax, %edx
        sarl $31, %edx

Which is right.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19515 91177308-0d34-0410-b5e6-96231b3b80d8

Update comments to indicate CopyFrom/ToReg take physregs as well as vregs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19514 91177308-0d34-0410-b5e6-96231b3b80d8

Try both ways to fold an add together.  This allows us to generate this code

        imul %EAX, %EAX, 400
        add %ECX, %EAX
        add %ESI, DWORD PTR [%ECX + 4*%EDX]
        inc %EDX
        cmp %EDX, 100

instead of this:

        imul %EAX, %EAX, 400
        add %ECX, %EAX
        mov %EAX, %EDX
        shl %EAX, 2
        add %ECX, %EAX
        add %ESI, DWORD PTR [%ECX]
        inc %EDX
        cmp %EDX, 100

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19513 91177308-0d34-0410-b5e6-96231b3b80d8

Shut up warnings with GCC 3.4.3 about uninitialized variables.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19512 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a major miscompilation where we were overwriting the scale reg.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19511 91177308-0d34-0410-b5e6-96231b3b80d8

Do not use the type of the RHS constant to determine the type of the operation.
This fails for shifts because the constant is always 8 bits.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19508 91177308-0d34-0410-b5e6-96231b3b80d8

Do not lose the offset from teh global when peephole optimizing instructions.
This fixes FreeBench/pcompress

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19507 91177308-0d34-0410-b5e6-96231b3b80d8

Silence VC++ warnings.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19506 91177308-0d34-0410-b5e6-96231b3b80d8

Add new file to Visual Studio CodeGen project

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19505 91177308-0d34-0410-b5e6-96231b3b80d8

Fix C++ more compilatiom errors

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19504 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a compile error with VC++, which things that static const arrays need
to be dynamically initialized. :(

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19503 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a bug that caused us to crash on povray.  We weren't emitting an FP_REG_KILL into a block that had a successor with a FP PHI node.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19502 91177308-0d34-0410-b5e6-96231b3b80d8

Print a load of a null pointer (in intel mode) like this:

        mov %AX, WORD PTR [0]

instead of like this:

        mov %AX, WORD PTR []

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19501 91177308-0d34-0410-b5e6-96231b3b80d8

Print a load of a null pointer like this:

        movw 0, %ax

instead of like this:

        movw , %ax

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19500 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a crash compiling povray on UINT_TO_FP from i16.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19499 91177308-0d34-0410-b5e6-96231b3b80d8

Add an option to view the selection dags as they are generated.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19498 91177308-0d34-0410-b5e6-96231b3b80d8

Use and print out BuildStatus, we don't always have build errors.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19497 91177308-0d34-0410-b5e6-96231b3b80d8

There are no [mem] op= reg instructions for FP, so remove their entries.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19496 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a bug where we didn't insert FP_REG_KILL instructions into MBB's that
contain FP PHI nodes but no other FP defining instructions.  This fixes
183.equake

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19495 91177308-0d34-0410-b5e6-96231b3b80d8

Fold TRUNCATE (LOAD P) into a smaller load from P.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19494 91177308-0d34-0410-b5e6-96231b3b80d8

Be more careful about order of arg evalution for CopyToReg nodes.  This shrinks
256.bzip2 from 7142 to 7103 lines of .s file.

Second, add initial support for folding loads into compares, though this code
is dynamically dead for now. :(

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19493 91177308-0d34-0410-b5e6-96231b3b80d8