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

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

not violate that.

llvm-svn: 35396

llvm-svn: 35394

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

llvm-svn: 35393

llvm-svn: 35392

the MMX instructions that are needed...

llvm-svn: 35389

llvm-svn: 35388

comparison operators.

llvm-svn: 35385

llvm-svn: 35383

char" and it is up to the compilers implementation or the platform which is
followed."
http://www.arm.linux.org.uk/docs/faqs/signedchar.php

llvm-svn: 35382

llvm-svn: 35381

llvm-svn: 35380

llvm-svn: 35379

llvm-svn: 35376