After trivial coalescing, the MI being visited may have become a copy. Avoid adding it to CSE hash table since copies aren't being considered for CSE and they may be deleted.
rdar://7819990

llvm-svn: 100170

PartialDiagnostic objects, and hoisting the stream operator for QualType into
Type.h with the operator for the normal DiagnosticBuilder. Also remove the no
longer needed friend declaration for the DeclarationName stream operator.

llvm-svn: 100169

folder to be tolerant of debug info following the
branch(es) at the end of a block.

llvm-svn: 100168

llvm-svn: 100167

unaligned loads into aligned loads.

llvm-svn: 100166

llvm-svn: 100165

llvm-svn: 100164

on Mac OS X to use @rpath rather than an absolute
path.  Also allowed the version to be set using an
environment variable.

llvm-svn: 100163

This fixes test/Transforms/GlobalOpt/gv-align.ll.

llvm-svn: 100161

llvm-svn: 100160

llvm-svn: 100159

This is more efficient than adding them to the worklist and then ignoring them.

llvm-svn: 100158

might interfere with merges to other branches (as Dan pointed out)

llvm-svn: 100157

likely not a bitcode file at all, rather than being a bitcode file which
is truncated. Check for this case and issue a more relevant error message.

llvm-svn: 100156

the standard.

llvm-svn: 100155

llvm-svn: 100153

llvm-svn: 100148

llvm-svn: 100147

llvm-svn: 100146

llvm-svn: 100145

llvm-svn: 100144

Add some switches helpful for debugging:

-print-before=<Pass Name>

Dump IR before running pass <Pass Name>.

-print-before-all

Dump IR before running each pass.

-print-after-all

Dump IR after running each pass.

These are helpful when tracking down a miscompilation.  It is easy to
get IR dumps and do diffs on them, etc.

To make this work well, add a new getPrinterPass API to Pass so that
each kind of pass (ModulePass, FunctionPass, etc.) can create a Pass
suitable for dumping out the kind of object the Pass works on.

llvm-svn: 100143

llvm-svn: 100137

Do not eagerly record known previous location. DBG_VALUE may not cause a new label due to one or other reason.

llvm-svn: 100134

llvm-svn: 100133

llvm-svn: 100132

llvm-svn: 100131

one place.  This removes the template function added in svn 94690.

llvm-svn: 100130

take'id' or return 'id' in their type. Fixes radar 7814131.

llvm-svn: 100129

blow out the stack for really big functions.  Start by fixing an easy case.

llvm-svn: 100126

an object or function. Our previous checking was too lax, and ended up
allowing missing or extraneous address-of operators, among other
evils. The new checking provides better diagnostics and adheres more
closely to the standard.

Fixes PR6563 and PR6749.

llvm-svn: 100125

Clang++ support, even in "Production" mode (for testing purposes).

llvm-svn: 100119

- Do not try to infer GV alignment unless its type is sized. It's not possible to infer alignment if it has opaque type.

llvm-svn: 100118

llvm-svn: 100117

Update comment, rename a local variable.

llvm-svn: 100116

llvm-svn: 100115

llvm-svn: 100107

- Use a RAII object to close the FD.
- Use sys::StrError instead of thread-unsafe strerror calls.
- Recover gracefully if read returns zero. This works around an issue on
  DragonFlyBSD where /dev/null has an st_size of 136 but we can't read 136 bytes
  from it.

llvm-svn: 100106

Fixes PR6755.

llvm-svn: 100105

llvm-svn: 100101