Commit Graph

60 Commits

Author SHA1 Message Date
Eric Christopher e0bd2fa927 Remove extra local variable.
llvm-svn: 209381
2014-05-22 01:45:59 +00:00
Alexey Volkov 6226de6721 [X86] Tune LEA usage for Silvermont
According to Intel Software Optimization Manual on Silvermont in some cases LEA
is better to be replaced with ADD instructions:
"The rule of thumb for ADDs and LEAs is that it is justified to use LEA
with a valid index and/or displacement for non-destructive destination purposes
(especially useful for stack offset cases), or to use a SCALE.
Otherwise, ADD(s) are preferable."

Differential Revision: http://reviews.llvm.org/D3826

llvm-svn: 209198
2014-05-20 08:55:50 +00:00
Craig Topper 062a2baef0 [C++] Use 'nullptr'. Target edition.
llvm-svn: 207197
2014-04-25 05:30:21 +00:00
Chandler Carruth 84e68b2994 [Modules] Fix potential ODR violations by sinking the DEBUG_TYPE
definition below all of the header #include lines, lib/Target/...
edition.

llvm-svn: 206842
2014-04-22 02:41:26 +00:00
Craig Topper 2d9361e325 [C++11] Add 'override' keyword to virtual methods that override their base class.
llvm-svn: 203378
2014-03-09 07:44:38 +00:00
Preston Gurd f03a6e7fba Forgot to add a break statement.
llvm-svn: 191715
2013-09-30 23:51:22 +00:00
Preston Gurd f0b6288cbf The X86FixupLEAs pass for Intel Atom must not call convertToThreeAddress
on ADD16rr opcodes, if src1 != src, since that would cause 
convertToThreeAddress to try to create a virtual register. This is not
permitted after register allocation, which is when the X86FixupLEAs pass
runs.

This patch fixes PR16785.

llvm-svn: 191711
2013-09-30 23:18:42 +00:00
Bill Wendling 8f26840c5a Don't cache the instruction and register info from the TargetMachine, because
the internals of TargetMachine could change.

No functionality change intended.

llvm-svn: 183571
2013-06-07 21:00:34 +00:00
Preston Gurd 128920d9fa Make function documentation conform to llvm standards.
Expunge all remaining traces and use of live variable information.

llvm-svn: 180577
2013-04-25 21:31:33 +00:00
Preston Gurd 8b7ab4ba2b This patch adds the X86FixupLEAs pass, which will reduce instruction
latency for certain models of the Intel Atom family, by converting
instructions into their equivalent LEA instructions, when it is both
useful and possible to do so.

llvm-svn: 180573
2013-04-25 20:29:37 +00:00