This patch migrates the isdigit optimizations from the simplify-libcalls
pass into the instcombine library call simplifier.

llvm-svn: 168578

Adding CXX_SUPPORTS_COVERED_SWITCH_DEFAULT_FLAG
       C_SUPPORTS_COVERED_SWITCH_DEFAULT_FLAG

This is to handle the wackiness on a Mac host where cmake detects:

CMAKE_CXX_COMPILER == "/usr/bin/c++"
CMAKE_C_COMPILER == "/usr/bin/gcc"

llvm-svn: 168577

llvm-svn: 168576

llvm-svn: 168575

This patch migrates the *abs optimizations from the simplify-libcalls
pass into the instcombine library call simplifier.

llvm-svn: 168574

This patch migrates the ffs* optimizations from the simplify-libcalls
pass into the instcombine library call simplifier.

llvm-svn: 168571

llvm-svn: 168570

llvm-svn: 168569

llvm-svn: 168568

  - Widespread trailing space removal
  - A dash of OCD spacing to block align enums
  - joined a line that probably needed 80 cols a while back

llvm-svn: 168566

to support it. Original patch with the parsing and plumbing by the PaX team and
Roman Divacky. I added the bits in MCDwarf.cpp and the test.

llvm-svn: 168565

No functionality change.

llvm-svn: 168561

llvm-svn: 168560

llvm-svn: 168559

llvm-svn: 168558

llvm-svn: 168557

llvm-svn: 168556

llvm-svn: 168554

Remove duplicate check of LimitFloatPrecision. It was already checked earlier before IsExp10 could be set to true.

llvm-svn: 168553

llvm-svn: 168551

Remove redundant calls to getCurDebugLoc in visitIntrinsicCall. It's already called at the start of the function and captured in a local variable.

llvm-svn: 168548

llvm-svn: 168546

Necessary to give disassembler users (like darwin's otool) a possibility to
dlopen libLTO and still initialize the required LLVM bits. This used to go
through libMCDisassembler but that's a gross layering violation, the MC layer
can't pull in functions from the targets. Adding a function to libLTO is a bit
of a hack but not worse than exposing other disassembler bits from libLTO.

Fixes PR14362.

llvm-svn: 168545

llvm-svn: 168543

The implementations already diverged a bit, merge them back together.

llvm-svn: 168542

The last remaining bit is "bcl 20, 31, AnonSymbol", which I couldn't find the
instruction definition for. Only whitespace changes in assembly output.

llvm-svn: 168541

llvm-svn: 168540

No functionality change.

llvm-svn: 168539

llvm-svn: 168538

We now store the Register and Offset directly. MachineLocation is gone (from
this file)!

llvm-svn: 168536

This untangles the switch cases of the old Move and RelMove opcodes a bit
and makes it clear how to add new instructions.

llvm-svn: 168534

llvm-svn: 168533

Give MCCFIInstruction a single, private constructor and add helper static
methods that create each type of cfi instruction. This is is preparation
for changing its representation. The representation with a pair
MachineLocations older than MC and has been abused quiet a bit to support
more cfi instructions.

llvm-svn: 168532

It can delete the block, and the loop continues on free'd memory.
No change in output. Found by valgrind.

llvm-svn: 168525

llvm-svn: 168524

it will expand any .cfi_* directives in the input assembly.

Unfortunately this cannot replace elf-dump in tests as the asm streamer
cannot relax the line advance opcodes.

llvm-svn: 168522

Roman Divacky. I just added the testcase.

llvm-svn: 168520

Update some test cases accordingly.

llvm-svn: 168516

llvm-svn: 168512

llvm-svn: 168511