_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: 35433

llvm-svn: 35432

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

systems.

llvm-svn: 35416

llvm-svn: 35415

llvm-svn: 35414

Docuemnt the checkpoint keyword

llvm-svn: 35413

llvm-svn: 35412

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

llvm-svn: 35409

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

llvm-svn: 35404

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

llvm-svn: 35402

llvm-svn: 35401

When converting an add/xor/and triplet into a trunc/sext, only do so if the
intermediate integer type is a bitwidth that the targets can handle.

llvm-svn: 35400

Remove test cases for and/xor/add -> trunc/sext that use bit widths that
the targets cannot code gen.

llvm-svn: 35399

llvm-svn: 35398

llvm-svn: 35397

not violate that.

llvm-svn: 35396

llvm-svn: 35395

llvm-svn: 35394

system assembler not groking legal instructions like "leal (,%esi,8), %ecx".

llvm-svn: 35393

llvm-svn: 35392

llvm-svn: 35391

Fixing doxygen.cfg target. I'm not a makefile expert, so hopefully this correct.Tested doxygen generation on zion.

llvm-svn: 35390

the MMX instructions that are needed...

llvm-svn: 35389