Some passes require breaking critical edges before they're called. Don't
segfault because of that.

llvm-svn: 140196

Place the check for an exit landing pad where it will be run on both code paths through the if-then-else.

llvm-svn: 140195

The landing pad must accompany the invoke when it's extracted. However, if it
does, then the loop isn't properly extracted. I.e., the resulting extraction has
a loop in it. The extracted function is then extracted, etc. resulting in an
infinite loop.

llvm-svn: 140193

This was only needed to locate llvm-gcc's installation directory when clang
falls back to run llvm-gcc for i386 kexts.  As of clang svn r140187, we're
now just searching paths with several different Darwin versions on either
side of the current version, so this is no longer needed.

llvm-svn: 140188

llvm-svn: 140186

This fixes PR10963. Thanks to Benjamin for finding the wrong tablegen
declaration.

llvm-svn: 140184

llvm-svn: 140183

Fix a bug introduced during refactoring a couple of months ago. Cortex-M3 does not support Thumb2 dsp instructions. rdar://10152911.

llvm-svn: 140181

llvm-svn: 140178

llvm-svn: 140176

extract its associated landing pad block as well. However, that landing pad
block may have more than one predecessor. So split the landing pad block so that
individual landing pads have only one predecessor.

This type of transformation may produce a false positive with bugpoint.

llvm-svn: 140173

llvm-svn: 140172

llvm-svn: 140169

llvm-svn: 140168

llvm-svn: 140167

llvm-svn: 140166

llvm-svn: 140164

No functionality change. The hook makes it explicit which patterns
require "special" handling. i.e. it self-documents tblgen
deficiencies. I plan to add verification in ExpandISelPseudos and
Thumb2SizeReduce to catch any missing hasPostISelHooks. Otherwise it's
too fragile.

llvm-svn: 140160

llvm-svn: 140158

llvm-svn: 140157

llvm-svn: 140156

llvm-svn: 140154

GCOVLines is always accessed through a StringMap where the key is FileName.

llvm-svn: 140151

There is no need to write a local utility routine to find subprogram info if the utility routine is already available in DebugInfo.

llvm-svn: 140145

llvm-svn: 140140

Modified ARMISelLowering::AdjustInstrPostInstrSelection to handle the
full gamut of CPSR defs/uses including instructins whose "optional"
cc_out operand is not really optional. This allowed removal of the
hasPostISelHook to simplify the .td files and make the implementation
more robust.
Fixes rdar://10137436: sqlite3 miscompile

llvm-svn: 140134

llvm-svn: 140133

llvm-svn: 140125

llvm-svn: 140122

llvm-svn: 140121

llvm-svn: 140119

llvm-svn: 140116

llvm-svn: 140111

llvm-svn: 140108

llvm-svn: 140106

llvm-svn: 140105

llvm-svn: 140104

llvm-svn: 140102

llvm-svn: 140099

llvm-svn: 140098