llvm-svn: 15337

llvm-svn: 15334

llvm-svn: 15328

llvm-svn: 15325

This change fixed a bug in the function visitMul.  The prior version
assumed that a constant on the RHS of a multiplication was either an
IntConstant or an FPConstant.  It checked for an IntConstant and then,
if it did not find one, did a hard cast to an FPConstant.  That code
would crash if the RHS were a ConstantExpr that was neither an
IntConstant nor an FPConstant.  This version replaces the hard cast
with a dyn_cast.  It performs the same way for IntConstants and
FPConstants but does nothing, instead of crashing, for constant
expressions.

The regression test for this change is 2004-07-27-ConstantExprMul.ll.

llvm-svn: 15291

llvm-svn: 15276

llvm-svn: 15263

end of the function (either return or unwind)

llvm-svn: 15232

llvm-svn: 15227

  a bug in DSE).
* Delete dead operand uses iteratively instead of recursively, using a
  SetVector.
* Defer deletion of dead operand uses until the end of processing, which means
  we don't have to bother with updating the AliasSetTracker.  This speeds up
  DSE substantially.

llvm-svn: 15204

llvm-svn: 15199

llvm-svn: 15162

can be improved in many ways.  But: stop laughing, even with -basicaa it
deletes 15% of the stores in 252.eon :)

llvm-svn: 15101

to the field being updated.  Patch contributed by Tobias Nurmiranta

llvm-svn: 15097

llvm-svn: 15089

* Test for whether bits are shifted out during the optzn.

If so, the fold is illegal, though it can be handled explicitly for setne/seteq

This fixes the miscompilation of 254.gap last night, which was a latent bug
exposed by other optimizer improvements.

llvm-svn: 15085

"simplify" a bit of code for comparison/and folding

llvm-svn: 15082

the appopriate size.  This gives us the ability to eliminate int -> ptr -> int

llvm-svn: 15063

return, clone the 'ret' BB code into the block AFTER the inlined call, not the
other way around.

llvm-svn: 15030

llvm-svn: 15029

to constify 14 globals instead of 4 in a trivial C++ testcase.

llvm-svn: 15027

llvm-svn: 15024

llvm-svn: 15022

actually care about.  Someday when the cast instruction is gone, we can do
better here, but this will do for now.  This implements
instcombine/cast.ll:test17/18 as well.

llvm-svn: 15018

llvm-svn: 14974

night compiling cfrac.  It did not realize that code like this:

int G; int *H = &G;

takes the address of G.

llvm-svn: 14973

llvm-svn: 14972

llvm-svn: 14968

llvm-svn: 14967

llvm-svn: 14966

llvm-svn: 14965

too.

llvm-svn: 14964

llvm-svn: 14963

llvm-svn: 14958

llvm-svn: 14957

- Replace ConstantPointerRef usage with GlobalValue usage

llvm-svn: 14953

- Replace ConstantPointerRef usage with GlobalValue usage
- Minimize redundant isa<GlobalValue> usage
- Correct isa<Constant> for GlobalValue subclass

llvm-svn: 14950

- Minimize redundant isa<GlobalValue> usage

llvm-svn: 14948

- Replace ConstantPointerRef usage with GlobalValue usage
- Correct isa<Constant> for GlobalValue subclass

llvm-svn: 14947

- Minimize redundant isa<GlobalValue> usage
- Correct isa<Constant> for GlobalValue subclass

llvm-svn: 14946