The long awaited CAST patch. This introduces 12 new instructions into LLVM
to replace the cast instruction. Corresponding changes throughout LLVM are
provided. This passes llvm-test, llvm/test, and SPEC CPUINT2000 with the
exception of 175.vpr which fails only on a slight floating point output
difference.

llvm-svn: 31931

First in a series of patches to convert SetCondInst into ICmpInst and
FCmpInst using only two opcodes and having the instructions contain their
predicate value. Nothing uses these classes yet. More patches to follow.

llvm-svn: 31867

llvm-svn: 31816

llvm-svn: 31815

llvm-svn: 31812

llvm-svn: 31811

llvm-svn: 31810

llvm-svn: 31724

llvm-svn: 31697

llvm-svn: 31561

This patch converts the old SHR instruction into two instructions,
AShr (Arithmetic) and LShr (Logical). The Shr instructions now are not
dependent on the sign of their operands.

llvm-svn: 31542

llvm-svn: 31511

Allow loop detection during debug in forwarding nodes, and revert auxcall patch as it make 176.gcc untenable

llvm-svn: 31510

llvm-svn: 31509

vector accesses like we handle out-of-range array accesses.

llvm-svn: 31427

improves readability of the call handling code significantly, as well as
makes it clear which parts are hacky (externals) and which parts are good
(call handling).

No functionality change.

llvm-svn: 31415

Turn on -Wunused and -Wno-unused-parameter. Clean up most of the resulting
fall out by removing unused variables. Remaining warnings have to do with
unused functions (I didn't want to delete code without review) and unused
variables in generated code. Maintainers should clean up the remaining
issues when they see them. All changes pass DejaGnu tests and Olden.

llvm-svn: 31380

Replace the REM instruction with UREM, SREM and FREM.

llvm-svn: 31369

having SCZeroExtendExpr be equivalent to SCTruncate

llvm-svn: 31355

llvm-svn: 31249

Make necessary changes to support DIV -> [SUF]Div. This changes llvm to
have three division instructions: signed, unsigned, floating point. The
bytecode and assembler are bacwards compatible, however.

llvm-svn: 31195

llvm-svn: 31136

llvm-svn: 31135

llvm-svn: 31128

This patch implements the first increment for the Signless Types feature.
All changes pertain to removing the ConstantSInt and ConstantUInt classes
in favor of just using ConstantInt.

llvm-svn: 31063

llvm-svn: 30933

llvm-svn: 30831

llvm-svn: 30725

llvm-svn: 30724

llvm-svn: 30686

llvm-svn: 30685

to unaliased allocations.  Use this information to disambiguate pointers loaded
from them.  This is a very common case, so it's worthwhile to handle efficiently.

This implements Analysis/GlobalsModRef/indirect-global.ll

llvm-svn: 30684

ConstantBool::getTrue() and ConstantBool::getFalse().

llvm-svn: 30666

llvm-svn: 30658

Fix http://llvm.org/bugs/show_bug.cgi?id=923

llvm-svn: 30630

llvm-svn: 30443

being erased.

llvm-svn: 30442

llvm-svn: 30168

reduce amount of stack space used at runtime.

llvm-svn: 30167

exit blocks. The output is dependent on addresses of basic block.

Add and use Loop::getUniqueExitBlocks.

llvm-svn: 29966