avoids a call to ::fstat by MappedFile when the file size information was
already obtained by the Path object.

llvm-svn: 35477

Make the sys::Path::getFileStatus function more efficient by having it
return a pointer to the FileStatus structure rather than copy it. Adjust
uses of the function accordingly. Also, fix some memory issues in sys::Path.

llvm-svn: 35476

llvm-svn: 35475

llvm-svn: 35473

removed in a few days.

llvm-svn: 35472

llvm-svn: 35467

llvm-svn: 35464

to the inode number on Unix and something far less unique on Windows. The
windows case needs to be improved.

llvm-svn: 35461

Updates for change in interface of getFileStatus method of sys::Path class.

llvm-svn: 35458

* Add a method: bool isAbsolute() const, which determines if the path name
  is absolute or not.
* Implement caching of file status information in the Path object. Allow it
  to be updated forcefully or lazily re-fetched from the cached value.

llvm-svn: 35456

2. Let APInt variable do the binary operation stuff instead of using
   ConstantExpr::getXXX.

llvm-svn: 35450

big endian targets until llvm-gcc build issue has been resolved.

llvm-svn: 35449

llvm-svn: 35448

llvm-svn: 35446

llvm-svn: 35445

1. Line out nested call of APInt::zext/trunc.
2. Make more use of APInt::getHighBitsSet/getLowBitsSet.
3. Use APInt[] operator instead of expression like "APIntVal & SignBit".

llvm-svn: 35444

   instead of using ConstantExpr::getXX.
2. Use constant reference to APInt if possible instead of expensive
   APInt copy.

llvm-svn: 35443

front ends that do not depend on the GCC runtime (someday...).

llvm-svn: 35441

llvm-svn: 35439

llvm-svn: 35438

behaviour in some cases.

llvm-svn: 35437

llvm-svn: 35435

_test3:
        leaq (,%rdi,4), %rax
        orq %rdi, %rax
        ret

instead of:
_test2:
        movq %rdi, %rax
        shlq $2, %rax
        orq %rdi, %rax
        ret

llvm-svn: 35434

llvm-svn: 35431

llvm-svn: 35430

llvm-svn: 35429

2. Use APInt[] instead of "X & SignBit".
3. Clean up some codes.
4. Make the expression like "ShiftAmt = ShiftAmtC->getZExtValue()" safe.

llvm-svn: 35424

based on their ordering. This is applicable to ETForest::dominates() also.

llvm-svn: 35423

2. Make the APInt value do the zext/trunc stuff instead of using
   ConstantExpr::getZExt().

llvm-svn: 35422

llvm-svn: 35420

llvm-svn: 35419

llvm-svn: 35418

llvm-svn: 35414

llvm-svn: 35411

describes its function as check against unresolved types and definitions.
This is handy for forcing error messages in assembly test cases or otherwise
ensuring that everything is resolved at that point in the assembly.

llvm-svn: 35410

1. Line out nested use of zext/trunc.
2. Make more use of getHighBitsSet/getLowBitsSet.
3. Use APInt[] != 0 instead of "(APInt & SignBit) != 0".

llvm-svn: 35408

llvm-svn: 35407

llvm-svn: 35406

llvm-svn: 35405

1) Take address scale into consideration. e.g. i32* -> scale 4.
2) Examine all the users of GEP.
3) Generalize to inter-block GEP's (no longer uses loopinfo).
4) Don't do xform if GEP has other variable index(es).

llvm-svn: 35403