llvm-svn: 31065

This patch implements the first increment for the Signless Types feature.
All changes pertain to removing the ConstantSInt and ConstantUInt classes
in favor of just using ConstantInt.

llvm-svn: 31063

llvm-svn: 31039

llvm-svn: 31038

Added workaround for linker bug with linkonce sections.
Changed sections prefix to allow linker merge them
(PE loader doesn't like too much long-named sections :) )
All of this unbreaks libstdc++ on mingw32 allowing (small)
programs to be compiled, linked and run.

llvm-svn: 31033

llvm-svn: 31024

targets.

llvm-svn: 31011

llvm-svn: 30993

llvm-svn: 30992

llvm-svn: 30990

llvm-svn: 30986

llvm-svn: 30985

llvm-svn: 30974

llvm-svn: 30973

llvm-svn: 30964

being matched and ensure there isn't a non-direct path to the load (i.e. a
path that goes out of the sub-dag.)

llvm-svn: 30958

llvm-svn: 30945

llvm-svn: 30938

llvm-svn: 30921

llvm-svn: 30914

llvm-svn: 30913

llvm-svn: 30907

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

llvm-svn: 30905

llvm-svn: 30900

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

See comment in CanBeFoldedBy() for detailed explanation.

llvm-svn: 30851

folding first.

llvm-svn: 30848

llvm-svn: 30847

llvm-svn: 30844

a framework for doing it right.  This fixes
CodeGen/X86/2006-10-07-ScalarSSEMiscompile.ll.

Once X86DAGToDAGISel::SelectScalarSSELoad is implemented right, this task
will be done.

llvm-svn: 30817

llvm-svn: 30815

llvm-svn: 30814

llvm-svn: 30813

llvm-svn: 30812

llvm-svn: 30811

Fix a bug where the asmstring for PSUBQrm was wrong.

llvm-svn: 30810

llvm-svn: 30809

llvm-svn: 30808