llvm-svn: 91589

llvm-svn: 91588

folding in particular expects null to be on the RHS.

llvm-svn: 91587

1. Don't make a copy of LangOptions every time a lexer is created.
2. Don't make CharInfo global mutable state.
3. Fix the implementation to properly treat ^Z as EOF instead of as
   horizontal whitespace, which matches the semantic implemented by VC++.

llvm-svn: 91586

llvm-svn: 91585

llvm-svn: 91584

llvm-svn: 91583

llvm-svn: 91582

llvm-svn: 91581

llvm-svn: 91580

with -disassemble, llvm-mc now accepts lines of the
form
0x00 0x00
and passes the resulting bytes to the disassembler for
the chosen (or default) target, printing the result.

llvm-svn: 91579

llvm-svn: 91578

llvm-svn: 91577

PR5809

llvm-svn: 91575

Fold (zext (and x, cst)) -> (and (zext x), cst)

DAG combiner likes to optimize expression in the other way so this would end up cause an infinite looping.

llvm-svn: 91574

llvm-svn: 91573

llvm-svn: 91572

llvm-svn: 91571

'void *' to mimic gcc's behavior. (fixes radar 7477351).

llvm-svn: 91570

llvm-svn: 91566

context) increment-of-bool idiom.

llvm-svn: 91564

llvm-svn: 91563

llvm-svn: 91562

Reapply r91392, it was only unmasking the bug, and since TOT is still broken having it reverted does no good.

llvm-svn: 91560

Reapply r91459, it was only unmasking the bug, and since TOT is still broken having it reverted does no good.

llvm-svn: 91559

method overrides a pure virtual method.

llvm-svn: 91558

llvm-svn: 91557

llvm-svn: 91555

llvm-svn: 91554

llvm-svn: 91553

llvm-svn: 91552

llvm-svn: 91551

Tail duplication produces lots of identical phi nodes in different basic
blocks. Teach PHIElimination to reuse the join registers when lowering a phi
node that is identical to an already lowered node. This saves virtual
registers, and more importantly it avoids creating copies the the coalescer
doesn't know how to eliminate.

Teach LiveIntervalAnalysis about the phi joins with multiple uses.

This patch significantly reduces code size produced by -pre-regalloc-taildup.

llvm-svn: 91549

with a non-trivial default constructor, zero-initialize the storage
and then call the default constructor. Fixes PR5800.

llvm-svn: 91548

llvm-svn: 91547

instead of crashing for now. 

llvm-svn: 91546

llvm-svn: 91545

llvm-svn: 91544

implement PR5654: add -fassume-sane-operator-new, which is enabled by default, and adds the malloc attribute to the global function new() and to the overloaded new operators.

feel free to chage the name to this lengthy argument

llvm-svn: 91543

llvm-svn: 91542