http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20061009/038518.html

llvm-svn: 30906

that it can't assume ESP is unmodified across the instrs.

llvm-svn: 30905

llvm-svn: 30903

It's turning:
        movl -24(%ebp), %esp
        subl $16, %esp
        movl -24(%ebp), %ecx
into
        movl -24(%ebp), %esp
        subl $16, %esp
        movl %esp, (%esp)

llvm-svn: 30902

llvm-svn: 30900

the stack slot.  This fixes PR943.

llvm-svn: 30898

compile-time performance.

llvm-svn: 30896

This compiles both tests in X86/vec_ss_load_fold.ll into:

_test1:
        movss 4(%esp), %xmm0
        subss LCPI1_0, %xmm0
        mulss LCPI1_1, %xmm0
        minss LCPI1_2, %xmm0
        xorps %xmm1, %xmm1
        maxss %xmm1, %xmm0
        cvttss2si %xmm0, %eax
        andl $65535, %eax
        ret

instead of:

_test1:
        movss LCPI1_0, %xmm0
        movss 4(%esp), %xmm1
        subss %xmm0, %xmm1
        movss LCPI1_1, %xmm0
        mulss %xmm0, %xmm1
        movss LCPI1_2, %xmm0
        minss %xmm0, %xmm1
        xorps %xmm0, %xmm0
        maxss %xmm0, %xmm1
        cvttss2si %xmm1, %eax
        andl $65535, %eax
        ret

llvm-svn: 30894

llvm-svn: 30892

llvm-svn: 30891

llvm-svn: 30889

llvm-svn: 30884

llvm-svn: 30883

llvm-svn: 30881

llvm-svn: 30880

llvm-svn: 30878

when the dag combiner simplifies an and mask, notice this and allow those bits
to be missing from the zap mask.

This compiles Alpha/zapnot4.ll into:

        sll $16,3,$0
        zapnot $0,3,$0
        ret $31,($26),1

instead of:

        ldah $0,1($31)
        lda $0,-8($0)
        sll $16,3,$1
        and $1,$0,$0
        ret $31,($26),1

It would be *really* nice to replace the hunk of code in the
AlphaISelDAGToDAG.cpp file that matches (and (srl (x, C), c2) into
(SRL (ZAPNOTi)) with a similar pattern, but I've spent enough time poking
at alpha.  Make andrew will do this.

llvm-svn: 30875

As a bonus, use the GOT node instead of the AlphaISD::GOT for internal stuff.

llvm-svn: 30873

llvm-svn: 30872

llvm-svn: 30869

llvm-svn: 30867

llvm-svn: 30866

llvm-svn: 30864

llvm-svn: 30862

llvm-svn: 30861

llvm-svn: 30860

llvm-svn: 30859

llvm-svn: 30858

llvm-svn: 30857

llvm-svn: 30856

llvm-svn: 30854

llvm-svn: 30853

See comment in CanBeFoldedBy() for detailed explanation.

llvm-svn: 30851

folding first.

llvm-svn: 30848

llvm-svn: 30847

llvm-svn: 30844

llvm-svn: 30835

The result of yyparse() was not being checked. When YYERROR or YYABORT is
called it causes yyparse() to return 1 to indicate the error. The code was
silently ignoring this situation because it previously expected either an
exception or a null ParserResult to indicate an error. The patch corrects
this situation.

llvm-svn: 30834

llvm-svn: 30831

llvm-svn: 30830