destruction of compiler-created ones.

llvm-svn: 42383

llvm-svn: 42382

llvm-svn: 42377

- Added ability to emit cross class register copies to the BBRU scheduler.
- More aggressive backtracking.

llvm-svn: 42375

llvm-svn: 42374

llvm-svn: 42373

- Added MRegisterInfo::getCrossCopyRegClass() hook. For register classes where reg to reg copies are not possible, this returns another register class which registers in the specified register class can be copied to (and copy back from).
- X86 copyRegToReg() now supports copying between EFLAGS and GR32 / GR64 registers.

llvm-svn: 42372

Some assemblers do not recognize aliases pushfd, pushfq, popfd, and popfq. Just emit them as pushf and popf.

llvm-svn: 42371

for direct codegen of fsin/fcos.

llvm-svn: 42369

llvm-svn: 42368

instruction creation. No support yet for instruction introspection.

Also eliminated allocas from the Ocaml bindings for portability,
and avoided unnecessary casts.

llvm-svn: 42367

llvm-svn: 42359

llvm-svn: 42357

llvm-svn: 42356

llvm-svn: 42355

llvm-svn: 42354

llvm-svn: 42350

llvm-svn: 42349

llvm-svn: 42348

llvm-svn: 42347

Tested with "make check"!

llvm-svn: 42346

llvm-svn: 42345

llvm-svn: 42344

llvm-svn: 42343

llvm-svn: 42342

llvm-svn: 42341

llvm-svn: 42338

llvm-svn: 42335

llvm-svn: 42333

llvm-svn: 42332

llvm-svn: 42331

llvm-svn: 42329

cases with undefined behavior.

llvm-svn: 42328

llvm-svn: 42324

llvm-svn: 42323

llvm-svn: 42322

llvm-svn: 42318

llvm-svn: 42316

llvm-svn: 42314

llvm-svn: 42313