memcpy alignment is the minimum of the incoming alignments.

Fixes PR 8266.

llvm-svn: 115305

llvm-svn: 115304

llvm-svn: 115303

llvm-svn: 115300

llvm-svn: 115297

llvm-svn: 115296

llvm-svn: 115295

llvm-svn: 115294

llvm-svn: 115293

llvm-svn: 115292

maybe even Linux.

llvm-svn: 115291

llvm-svn: 115261

llvm-svn: 115257

llvm-svn: 115255

llvm-svn: 115251

llvm-svn: 115250

SingleSource/Regression/C/casts.c.

llvm-svn: 115246

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: 115225

llvm-svn: 115215

llvm-svn: 115214

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: 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

vs. ELF

llvm-svn: 115180

llvm-svn: 115179

llvm-svn: 115178

llvm-svn: 115177

llvm-svn: 115176

llvm-svn: 115175

llvm-svn: 115174

missed a bunch of files.  Here the rest.  Sorry about that.

llvm-svn: 115173