The x86_mmx type is used for MMX intrinsics, parameters and
return values where these use MMX registers, and is also
supported in load, store, and bitcast.

Only the above operations generate MMX instructions, and optimizations
do not operate on or produce MMX intrinsics. 

MMX-sized vectors <2 x i32> etc. are lowered to XMM or split into
smaller pieces.  Optimizations may occur on these forms and the
result casted back to x86_mmx, provided the result feeds into a
previous existing x86_mmx operation.

The point of all this is prevent optimizations from introducing
MMX operations, which is unsafe due to the EMMS problem.

llvm-svn: 115243

false positive, at least on Darwin. I haven't filed this, but you can feel free.

llvm-svn: 115242

conversion heuristics to the old-style ones.

llvm-svn: 115239

use MC instructions in the printInstruction() method via the tablegen flag
for it rather than a #define prior to including the autogenerated bits.

llvm-svn: 115238

llvm-svn: 115237

Fixed some misspells in comments.

llvm-svn: 115236

    # rdar://problem/8493023
    # test/types failures for Test*TypesExpr.py: element offset computed wrong and sign error?

Two failures remain for test_short* test cases.

llvm-svn: 115229

- post-increament, distance and bool conversion methods to LocalScope::const_iterator,
- adding VarDecl to LocalScope.

Fixed some misspells in comments.

llvm-svn: 115227

llvm-svn: 115225

llvm-svn: 115224

declarations because we lost the original context which was needed to be
able to figure out the byte size.

llvm-svn: 115223

llvm-svn: 115216

llvm-svn: 115215

llvm-svn: 115214

Added the start of Host specific launch services, though it currently isn't
hookup up to anything. We want to be able to launch a process and use the
native launch services to launch an app like it would be launched by the
user double clicking on the app. We also eventually want to be able to run
a command line app in a newly spawned terminal to avoid terminal sharing.

Fixed an issue with the new DWARF forward type declaration stuff. A crasher
was found that was happening when trying to properly expand the forward
declarations.

llvm-svn: 115213

llvm-svn: 115210

llvm-svn: 115209

to using Clang to get type sizes.  This fixes a bug
where the type size for a double[2] was being wrongly
reported as 8 instead of 16 bytes, causing problems
for IRForTarget.

Also improved logging so that the next bug in this
area will be easier to find.

llvm-svn: 115208

[atomics.flag] completed.  Initialization is not working on clang and can't be made to work without defaulted default constructors.

llvm-svn: 115207

llvm-svn: 115206

We do want to allow LoadPRE to perform LICM-like transformations: we already consider PHI nodes to be negligible for
code size (making this transform code size neutral), and it allows us to hoist values out of loops, which is always
a good thing.

llvm-svn: 115205

The bug that broke i386 linux has been fixed in r115191.

llvm-svn: 115204

llvm-svn: 115203

llvm-svn: 115202

Fixes rdra://8475819.

llvm-svn: 115201

ensure we at least get some minimal testing of running in a multithreaded
environment (for example, having a reduced stack size).

llvm-svn: 115200

llvm-svn: 115198

fixes some cases where we were producing relocations with at symbol that
should use a section instead.

llvm-svn: 115194

llvm-svn: 115193

edited during emission.

If the basic block ends in a switch that gets lowered to a jump table, any
phis at the default edge were getting updated wrong. The jump table data
structure keeps a pointer to the header blocks that wasn't getting updated
after the MBB is split.

This bug was exposed on 32-bit Linux when disabling critical edge splitting in
codegen prepare.

The fix is to uipdate stale MBB pointers whenever a block is split during
emission.

llvm-svn: 115191

In this experimental mode try avoiding debug info emission for classes as much as possible. The goal is to reduce size of produced debuginfo without reducing quality of debug info in general. This is a work in progress.

llvm-svn: 115188

llvm-svn: 115186

llvm-svn: 115185

llvm-svn: 115184

Add "-o" option to "expression" which prints the object description if available.

llvm-svn: 115182

vs. ELF

llvm-svn: 115180

llvm-svn: 115179

llvm-svn: 115178

llvm-svn: 115177

llvm-svn: 115176