method. This allows the target lowering code to not have to deal with MDNodes.

Also, avoid leaking memory like a sieve by not creating a global variable for
the image info section, but just emitting the code directly.

llvm-svn: 150624

llvm-svn: 150623

Accomplished by moving the body of StringRef::edit_distance into
a separate function that accepts two ArrayRefs, and making
StringRef::edit_distance a wrapper around the new function.

llvm-svn: 150621

llvm-svn: 150619

llvm-svn: 150610

llvm-svn: 150608

Patch by Sundeep!

llvm-svn: 150607

llvm-svn: 150606

This reverts commit 1656806a944bbd23e98c6e578810fe02495ab741.

llvm-svn: 150605

as it's breaking the build.

This reverts commit 11241abca5e2a313412fed594bb9d9fa2a2057fb.

llvm-svn: 150604

llvm-svn: 150603

llvm-svn: 150601

llvm-svn: 150591

For ELF, also call fixSymbolsInTLSFixups() on expressions passed to EmitValue (literal values). Previously only called on expressions in instructions. New test cases added to tls.s, tls-i386.s. Resolves PR11981.

llvm-svn: 150582

The c'tor list is stored as a list of 'void ()*'s, so all of the functions are
bitcast to that. However, the dyn_cast doesn't automagically look through
bitcasts. Do that for it.
<rdar://problem/10813350>

llvm-svn: 150572

used to incrementally update a created node without needing a
temporary node and RAUW.

llvm-svn: 150571

I'll put MachineLICM back before PEI. All my arm/x86 benchmarks look good, but buildbots don't like it.

llvm-svn: 150568

llvm-svn: 150567

llvm-svn: 150566

llvm-svn: 150565

llvm-svn: 150564

The llc command line options for enabling/disabling passes are local to CodeGen/Passes.cpp. This patch associates those options with standard pass IDs so they work regardless of how the target configures the passes.

A target has two ways of overriding standard passes:
1) Redefine the pass pipeline (override TargetPassConfig::add%Stage)
2) Replace or suppress individiual passes with TargetPassConfig::substitutePass.

In both cases, the command line options associated with the pass override the target default.

For example, say a target wants to disable machine instruction scheduling by default:

- The target calls disablePass(MachineSchedulerID) but otherwise does not override any TargetPassConfig methods.

- Without any llc options, no scheduler is run.

- With -enable-misched, the standard machine scheduler is run and honors the -misched=... flag to select the scheduler variant, which may be used for performance evaluation or testing.

Sorry overridePass is ugly. I haven't thought of a better way without replacing the cl::opt framework. I hope to do that one day...

I haven't figured out why CodeGen uses char& for pass IDs. AnalysisID is much easier to use and less bug prone. I'm using it wherever I can for internal implementation. Maybe later we can change the global pass ID definitions as well.

llvm-svn: 150563

Added TargetPassConfig::disablePass/substitutePass as a general mechanism to override specific passes.

llvm-svn: 150562

llvm-svn: 150561

llvm-svn: 150553

llvm-svn: 150552

llvm-svn: 150550

llvm-svn: 150538

Stop custom lowering forr x86 DEC64m from happening if the load in the lowered sequence has more than 1 user

llvm-svn: 150537

llvm-svn: 150536

Pretend that regmask interference ends at the 'dead' slot, even when
there is other interference ending at the 'reg' slot of the same
instruction.

llvm-svn: 150531

Perform all comparisons at instruction granularity, and make sure
register masks on uses count in both gaps.

llvm-svn: 150530

Only accept register masks when looking for an 'overlapping' def. When
Overlap is not set, the function searches for a proper definition of
Reg.

This means MI->modifiesRegister() considers register masks, but
MI->definesRegister() doesn't.

llvm-svn: 150529

When a physreg is live in to a basic block, look for any instruction in
the block that clobbers the physreg.

The instruction doesn't have to properly redefine the register, any
overlapping clobber is OK.

This slightly changes live ranges when compiling with register masks.

llvm-svn: 150528

The old DenseMap hashed order was very confusing.

llvm-svn: 150527

llvm-svn: 150525

llvm-svn: 150520

after the `for(...) ;' has more indentation than for itself.

llvm-svn: 150516

Using the new external-linkage warning recently added instead of disabling all return type warnings.

llvm-svn: 150512

Patch by Matt Johnson

llvm-svn: 150508