llvm-svn: 85351

use it to control tail merging when there is a tradeoff between performance
and code size.  When there is only 1 instruction in the common tail, we have
been merging.  That can be good for code size but is a definite loss for
performance.  Now we will avoid tail merging in that case when the
optimization level is "Aggressive", i.e., "-O3".  Radar 7338114.

Since the IfConversion pass invokes BranchFolding, it too needs to know
the optimization level.  Note that I removed the RegisterPass instantiation
for IfConversion because it required a default constructor.  If someone
wants to keep that for some reason, we can add a default constructor with
a hard-wired optimization level.

llvm-svn: 85346

llvm-svn: 85341

llvm-svn: 85335

llvm-svn: 85334

default behind a command line option. This will enable better performance for
vectors on NEON enabled processors.

llvm-svn: 85333

llvm-svn: 85332

llvm-svn: 85331

llvm-svn: 85329

llvm-svn: 85312

llvm-svn: 85311

llvm-svn: 85299

BL_pred and BLr9_pred.

llvm-svn: 85297

Do away with addLegalFPImmediate. Add a target hook isFPImmLegal which returns true if the fp immediate can be natively codegened by target.

llvm-svn: 85281

instruction format that already takes care of setting this.

llvm-svn: 85280

for the r/rr fragment of the multiclass AI_unary_rrot/AI_bin_rrot.

llvm-svn: 85271

llvm-svn: 85257

llvm-svn: 85255

llvm-svn: 85252

llvm-svn: 85235

llvm-svn: 85186

Change Thumb1 and Thumb2 instructions to separate opcode from operands with a tab instead of a space.

llvm-svn: 85184

llvm-svn: 85178

Remove LowerAllocations pass.
Update some more passes to treate free calls just like they were treating FreeInst.

llvm-svn: 85176

bits.  Johnny, please review -- I do not have a good track record of getting
these right.

llvm-svn: 85173

Patch by Johnny Chen.

llvm-svn: 85169

bits.  Patch by Johnny Chen.

llvm-svn: 85167

llvm-svn: 85161

llvm-svn: 85138

llvm-svn: 85134

llvm-svn: 85127

direct inclusion edge from System to Support.

llvm-svn: 85086

llvm-svn: 85065

llvm-svn: 85064

llvm-svn: 85052

llvm-svn: 85049

llvm-svn: 85048

VISIBILITY_HIDDEN removal.

llvm-svn: 85043

Chris claims we should never have visibility_hidden inside any .cpp file but
that's still not true even after this commit.

llvm-svn: 85042

llvm-svn: 85041