Add support for switch and indirectbr edges. This works by densely numbering
all blocks which have such terminators, and then separately numbering the
possible successors. The predecessors write down a number, the successor knows
its own number (as a ConstantInt) and sends that and the pointer to the number
the predecessor wrote down to the runtime, who looks up the counter in a
per-function table.

Coverage data should now be functional, but I haven't tested it on anything
other than my 2-file synthetic test program for coverage.

llvm-svn: 130186

llvm-svn: 130183

llvm-svn: 130181

return it as a clobber.  This allows GVN to do smart things.

Enhance GVN to be smart about the case when a small load is clobbered
by a larger overlapping load.  In this case, forward the value.  This
allows us to compile stuff like this:

int test(void *P) {
  int tmp = *(unsigned int*)P;
  return tmp+*((unsigned char*)P+1);
}

into:

_test:                                  ## @test
	movl	(%rdi), %ecx
	movzbl	%ch, %eax
	addl	%ecx, %eax
	ret

which has one load.  We already handled the case where the smaller
load was from a must-aliased base pointer.

llvm-svn: 130180

llvm-svn: 130179

Let dwarf writer allocate extra space in the debug location expression. This space, if requested, will be used for complex addresses of the Blocks' variables.

llvm-svn: 130178

llvm-svn: 130177

llvm-svn: 130176

llvm-svn: 130175

And modify the test cases accordingly.

llvm-svn: 130174

side-effect to generate their ir. Not just for
__builtin_expect. // rdar://9330105

llvm-svn: 130172

llvm-svn: 130171

s/addVariableAddress/addFrameVariableAddress/g

llvm-svn: 130170

For the warnings related to -Wparentheses, display first the note about how to silence the warning and
any other suggestion after that. Related to rdar://9300260.

llvm-svn: 130169

Re-enable disable free optimization where the FrontendAction is not freed when -disable-free is passed.  This accidentally was commited in r128011.

llvm-svn: 130168

Observed this while reading code, so I do not have a test case handy here.

llvm-svn: 130167

llvm-svn: 130166

llvm-svn: 130165

When generating printf fixits, preserve the original formating for unsigned integers (e.g., 'x', 'o').

llvm-svn: 130164

constant-folded. // rdar://9330105

llvm-svn: 130163

llvm-svn: 130162

Implements the strncmp() checker just like the strcmp() checker, but with bounds. Requires LLVM svn r129582.

llvm-svn: 130161

llvm-svn: 130160

Add 'lldb_private' namespace where necessary to prevent ambiguity and
resulting infinite loops.

llvm-svn: 130159

llvm-svn: 130158

'extern' variables in functions don't shadow externs in global scope. Fixes rdar://8883302, this time for C++ as well.

llvm-svn: 130157

llvm-svn: 130156

llvm-svn: 130155

llvm-svn: 130154

llvm-svn: 130153

llvm-svn: 130152

patch by Johannes Schaub!

llvm-svn: 130151

write access to.

llvm-svn: 130150

into user code which may warn about them with -pedantic.  Patch by Jonathan Sauer!

llvm-svn: 130149

the enum decl, we need to use an integer type the same size as the enumerator,
which may not be the promoted type with packed enums.

llvm-svn: 130148

i.e., with 'SBStream &description' first, followed by 'DescriptionLevel level'.

Modify lldbutil.py so that get_description() for a target or breakpoint location
can just take the lldb object itself without specifying an option to mean option
lldb.eDescriptionLevelBrief.  Modify TestTargetAPI.py to exercise this logic path.

llvm-svn: 130147

This is wip.

llvm-svn: 130138

llvm-svn: 130137

Minor tweak to avoid having to dig through canonical types multiple times when checking a qualification conversion

llvm-svn: 130136

in a Utility directory.

llvm-svn: 130135