llvm-svn: 18846

llvm-svn: 18844

llvm-svn: 18843

in some cases.

llvm-svn: 18842

llvm-svn: 18841

llvm-svn: 18840

llvm-svn: 18839

In particular, implement div.ll:test10 and rem.ll:test4.

llvm-svn: 18838

when compiled with debug information.

llvm-svn: 18835

llvm-svn: 18833

failures from last night.

llvm-svn: 18832

This fixes a crash compiling TimberWolfMC that was exposed due to recent
optimizer changes.

llvm-svn: 18831

llvm-svn: 18830

llvm-svn: 18826

llvm-svn: 18824

Also, fix a bug where ubyte 255 would sometimes be output as -1. This
was afflicting hbd.

llvm-svn: 18823

llvm-svn: 18820

in SPEC, the subsequent optimziations that we are after don't play with
with FP values, so disable this xform for them.  Really we just don't want
stuff like:

double G;   (always 0 or 412312.312)
  = G;

turning into:

bool G_b;
  = G_b ? 412312.312 : 0;

We'd rather just do the load.

-Chris

llvm-svn: 18819

llvm-svn: 18818

down to actually BE a bool.  This allows simple value range propagation
stuff work harder, deleting comparisons in bzip2 in some hot loops.

This implements GlobalOpt/integer-bool.ll, which is the essence of the
loop condition distilled into a testcase.

llvm-svn: 18817

if the other side is overdefined.

This allows us to fold conditions like:  if (X < Y || Y > Z) in some cases.

llvm-svn: 18807

llvm-svn: 18805

test in the suite.  :(

llvm-svn: 18804

llvm-svn: 18803

llvm-svn: 18802

llvm-svn: 18800

llvm-svn: 18799

 1. Actually increment the Statistic for the GV elim optzn
 2. When resolving undef branches, only resolve branches in executable blocks,
    avoiding marking a bunch of completely dead blocks live.  This has a big
    impact on the quality of the generated code.

With this patch, we positively rip up vortex, compiling Ut_MoveBytes to a
single memcpy call. In vortex we get this:

     12 ipsccp           - Number of globals found to be constant
    986 ipsccp           - Number of arguments constant propagated
   1378 ipsccp           - Number of basic blocks unreachable
   8919 ipsccp           - Number of instructions removed

llvm-svn: 18796

llvm-svn: 18795

ctor parameters can be defaulted.

Print the transformed llvm code input to the instruction selector
when -print-machineinstrs is on, just like V9.

llvm-svn: 18794

*or g0, x      add g0, x          recognized * as a move)
 or  x, g0     add  x, g0
 or  0, x      add  0, x
 or  x, 0      add  x, 0

llvm-svn: 18793

* Don't emit the Index * ElementSize multiply if Index is a constant.
* Use a shift, not a multiply, if ElementSize is 1/2/4/8.
* If ElementSize fits in the immediate field of SMUL, then put it there.

Fix a bug where struct offsets might be truncated (ConstantSInt::get is
now used instead of ConstantInt::get).

llvm-svn: 18792

ones are failing in cbe.

llvm-svn: 18791

non-address-taken global variables.

llvm-svn: 18790

In functions where we fully constant prop the return value, replace all
ret instructions with 'ret undef'.

llvm-svn: 18786

llvm-svn: 18785

llvm-svn: 18781

llvm-svn: 18776

llvm-svn: 18774

and the failure on make_dparser last night.

llvm-svn: 18766