llvm-svn: 127388

llvm-svn: 127383

llvm-svn: 127382

Introduce DebugInfoProbe. This is used to monitor how llvm optimizer is treating debugging information. 
It generates output that lools like

8 times line number info lost by Scalar Replacement of Aggregates (SSAUp) 
1 times line number info lost by Simplify well-known library calls 
12 times variable info lost by Jump Threading

llvm-svn: 127381

llvm-svn: 127380

llvm-svn: 127376

llvm-svn: 127371

llvm-svn: 127369

flexible.

If it returns a register class that's different from the input, then that's the
register class used for cross-register class copies.
If it returns a register class that's the same as the input, then no cross-
register class copies are needed (normal copies would do).
If it returns null, then it's not at all possible to copy registers of the
specified register class.

llvm-svn: 127368

llvm-svn: 127366

llvm-svn: 127365

llvm-svn: 127364

llvm-svn: 127363

llvm-svn: 127362

llvm-svn: 127359

llvm-svn: 127358

llvm-svn: 127357

try to make o32 cc tests less specific to silence some buildbots. The test isn't enabled yet, this is will be done in a subsequent commit. Patch by Akira Hatanaka.

llvm-svn: 127356

The insufficient encoding information of the combined instruction confuses the decoder wrt
UQADD16.  Add extra logic to recover from that.

Fixed an assert reported by Sean Callanan

llvm-svn: 127354

command line, they'll still be seen with -help-hidden.

llvm-svn: 127353

llvm-svn: 127352

The damage done by physreg coalescing only depends on the number of instructions
the extended physreg live range covers. This fixes PR9438.

The heuristic is still luck-based, and physreg coalescing really should be
disabled completely. We need a register allocator with better hinting support
before that is possible.

Convert a test to FileCheck and force spilling by inserting an extra call. The
previous spilling behavior was dependent on misguided physreg coalescing
decisions.

llvm-svn: 127351

The test is derived from an old miscompilation of
MultiSource/Benchmarks/VersaBench/8b10b which is run regularly, so we are not
losing coverage.

llvm-svn: 127350

llvm-svn: 127349

llvm-svn: 127348

This helps cases like 2008-07-19-movups-spills.ll, but doesn't have an obvious impact on benchmarks

llvm-svn: 127347

Add createELFObjectTargetWriter method to TargetAsmBackend, which enables construction of non-standard ELFObjectWriters that can be used in MCJIT.

llvm-svn: 127346

llvm-svn: 127345

llvm-svn: 127343

When ExactBECount is a constant, use it for MaxBECount.
When MaxBECount cannot be computed, replace it with ExactBECount.
Fixes PR9424.

llvm-svn: 127342

llvm-svn: 127341

llvm-svn: 127340

llvm-svn: 127335

before the main loop. This is necessary because the loop ignores the
items added to `link_components' after it is entered.

llvm-svn: 127333

llvm-svn: 127331

llvm-svn: 127328

Makefile.rules: [PR2928] "make install" may install include files along explicit pattern, not to install CMake's building stuff.

llvm-svn: 127325

Thanks Duncan Sands!

llvm-svn: 127323

llvm-svn: 127321

alloca as both integer and floating-point vectors of the same size. Bugpoint is
not cooperating with me, but I'll try to find a manual testcase tomorrow.

llvm-svn: 127320