Clear function specific containers while processing end of a function, even if DW_TAG_subprogram for current function is not found.

llvm-svn: 90247

llvm-svn: 90246

llvm-svn: 90243

We want LiveVariables clients to use methods rather than accessing the
getVarInfo data structure directly. That way it will be possible to change the
LiveVariables representation.

llvm-svn: 90240

llvm-svn: 90236

llvm-svn: 90230

llvm-svn: 90222

llvm-svn: 90221

llvm-svn: 90220

llvm-svn: 90217

llvm-svn: 90216

llvm-svn: 90214

llvm-svn: 90212

precisely, which prevents us from infinitely peeling the loop.

llvm-svn: 90211

llvm-svn: 90210

explicitly so we can check arguments.

llvm-svn: 90199

This means that well connected blocks are copy coalesced before the less connected blocks. Connected blocks are more difficult to
coalesce because intervals are more complicated, so handling them first gives a greater chance of success.

llvm-svn: 90194

llvm-svn: 90189

PEDANTIC defaults to ON and WERROR default to off.

Also add MSVC warnings. To disable warnings add the flags
LLVM_ENABLE_WARNINGS (default on).

Patch by Tobias Grosser!

llvm-svn: 90188

llvm-svn: 90186

llvm-svn: 90185

llvm-svn: 90184

llvm-svn: 90182

DICompileUnit. This code now prints debug filenames successfully.

llvm-svn: 90181

llvm-svn: 90180

llvm-svn: 90176

For VMOVv*i[16,32], op bit is don't care, and some cmode bits vary depending on
the immediate values.

Ref: Table A7-15 Modified immediate values for Advanced SIMD instructions.
llvm-svn: 90173

llvm-svn: 90172

llvm-svn: 90170

llvm-svn: 90169

llvm-svn: 90166

llvm-svn: 90165

llvm-svn: 90164

New virtual registers created for spill intervals should inherit allocation hints from the original register.

This helps us avoid silly copies when rematting values that are copied to a physical register:

leaq	_.str44(%rip), %rcx
movq	%rcx, %rsi
call	_strcmp

becomes:

leaq	_.str44(%rip), %rsi
call	_strcmp

The coalescer will not touch the movq because that would tie down the physical register.

llvm-svn: 90163

llvm-svn: 90160

branches even when optimizing for code size.  Unless we find evidence to the
contrary in the future, the special treatment for indirect branches does not
have a significant effect on code size, and performance still matters with -Os.

llvm-svn: 90147

for all the processors where I have tried it, and even when it might not help
performance, the cost is quite low.  The opportunities for duplicating
indirect branches are limited by other factors so code size does not change
much due to tail duplicating indirect branches aggressively.

llvm-svn: 90144

llvm-svn: 90141

llvm-svn: 90138

llvm-svn: 90136