(or (x << c) | (y >> (64 - c))) ==> (shld64 x, y, c)

The isel patterns may not catch all the cases if general dag combine has reduced width of source operands.

llvm-svn: 92513

llvm-svn: 92511

lets the test-elimination work in more conditional-move cases.

llvm-svn: 92508

rules as normal add, and, or, etc.

llvm-svn: 92507

This lets isel fold loads into them in more cases.

llvm-svn: 92506

llvm-svn: 92472

on the example in PR4216.  This doesn't trigger in the testsuite,
so I'd really appreciate someone scrutinizing the logic for
correctness.

llvm-svn: 92458

multiply sequence when the power is a constant integer.  Before, our
codegen for std::pow(.., int) always turned into a libcall, which was
really inefficient.

This should also make many gfortran programs happier I'd imagine.

llvm-svn: 92388

on integers as well and codegen should lower them to branch trees.

llvm-svn: 92382

llvm-svn: 92265

llvm-svn: 92242

to go away from IRBuilder.h

llvm-svn: 92230

llvm-svn: 92222

llvm-svn: 92201

Allow targets to specify the return type of libcalls that are generated for floating point comparisons, rather than hard-coding them as i32.

llvm-svn: 92199

llvm-svn: 92198

llvm-svn: 92197

llvm-svn: 92196

llvm-svn: 92195

llvm-svn: 92194

llvm-svn: 92193

llvm-svn: 92186

llvm-svn: 92185

llvm-svn: 92184

llvm-svn: 92182

mainly used in debugging and/or assert situations. It should make the compiler
and the static analyzer stop nagging us about them.

llvm-svn: 92181

do illegal stuff around it.  No testcase because the issue is very fragile.

llvm-svn: 92167

llvm-svn: 92058

llvm-svn: 92054

Rearrange arguments.
No functional changes

llvm-svn: 92053

llvm-svn: 92052

llvm-svn: 92051

llvm-svn: 91996

llvm-svn: 91995

llvm-svn: 91993

llvm-svn: 91976

interesting part of this is the divrem changes, which are
already tested by CodeGen/X86/divrem.ll.

llvm-svn: 91975

static inline functions with macros.

llvm-svn: 91973

instead use the appropriate subreggy thing.  This generates identical
code on some large apps (thanks to Evan's cross class coalescing
stuff he did back in july).  This means that MOV16r0 can go away
completely in the future soon.

llvm-svn: 91972

Certain Thumb instructions require only SP (e.g. tSTRspi).

llvm-svn: 91944