- Remove unused instructions.

llvm-svn: 49921

llvm-svn: 49916

rather than having it suck them out of a node.  Add
a bunch of new libcalls, and remove dead softfloat
code (dead, because FloatToInt is used not Expand
in this case).  Note that indexed stores probably
aren't handled properly, likewise for loads.

llvm-svn: 49915

llvm-svn: 49913

llvm-svn: 49911

llvm-svn: 49878

may fix a build error on Visual Studio.

llvm-svn: 49876

llvm-svn: 49869

llvm-svn: 49854

the end.  It is now run at the same moment as in
llvm-gcc.  Also, run StripDeadPrototypes at the
end, just before running DeadTypeElimination.
This may be useful when doing LTO.  Note that
llvm-gcc runs StripDeadPrototypes but not
DeadTypeElimination.

llvm-svn: 49848

llvm-svn: 49844

Be more careful with insert_subreg and extract_subreg where either source or destination operand has already been coalesced with another register that's defined by a insert_subreg or extract_subreg.

llvm-svn: 49843

llvm-svn: 49842

llvm-svn: 49841

llvm-svn: 49839

llvm-svn: 49838

llvm-svn: 49832

wee problem in Xcode 2.[45]/gcc 4.0.1.

llvm-svn: 49831

llvm-svn: 49830

llvm-svn: 49822

llvm-svn: 49820

Correlate stubs with functions in JIT: when emitting a stub, the JIT tells the memory manager which function
the stub will resolve.

llvm-svn: 49814

llvm-svn: 49813

llvm-svn: 49810

Infrastructure for getting the machine code size of a function and an instruction. X86, PowerPC and ARM are implemented

llvm-svn: 49809

llvm-svn: 49808

llvm-svn: 49807

Patch by Mikhail Glushenkov!

llvm-svn: 49803

llvm-svn: 49802

llvm-svn: 49800

llvm-svn: 49799

Rename SDOperandImpl back to SDOperand.
Introduce the SDUse class that represents a use of the SDNode referred by
an SDOperand. Now it is more similar to Use/Value classes.

Patch is approved by Dan Gohman.

llvm-svn: 49795

llvm-svn: 49793

merge of r49785 (from branches/ggreif/use-diet): pass V to dyn_cast by const reference, this avoids copy-constructing and destructing all the time. especially important if these constructors are not accessible

llvm-svn: 49787

Rewrite LiveVariable liveness computation. The new implementation is much simplified. It eliminated the nasty recursive routines and removed the partial def / use bookkeeping. There is also potential for performance improvement by replacing the conservative handling of partial physical register definitions. The code is currently disabled until live interval analysis is taught of the name scheme.

This patch also fixed a couple of nasty corner cases.

llvm-svn: 49784

llvm-svn: 49783

from transforming loops and adding a separate loop pass for removing
loops with know trip counts.  Until that happens, ADCE is miscompiling this code.

llvm-svn: 49769

llvm-svn: 49768

llvm-svn: 49766

llvm-svn: 49765