llvm-svn: 160950

Remove check for sub class of X86Inst from filter function since caller guaranteed it. Replace another sub class check with ShouldBeEmitted flag since it was factored in there already.

llvm-svn: 160949

llvm-svn: 160948

Remove check for f256mem from has256BitOperands as nothing depended on it and it isn't the only 256-bit memory type anyway.

llvm-svn: 160946

llvm-svn: 160945

llvm-svn: 160942

llvm-svn: 160941

Fix up patterns for VCVTSS2SD. Specifically give it priority over SSE form. Add an OptForSpeed to explicitly pair up with an OptForSize that was already on another pattern.

llvm-svn: 160939

llvm-svn: 160938

llvm-svn: 160937

No functionality change.

llvm-svn: 160929

llvm-svn: 160927

llvm-svn: 160925

llvm-svn: 160922

llvm-svn: 160921

Trying to fix the bot by specifying a triple in the failing testing cases.

llvm-svn: 160920

Machine CSE and other optimizations can remove instructions so folding
is possible at peephole while not possible at ISel.

rdar://10554090 and rdar://11873276

llvm-svn: 160919

llvm-svn: 160914

llvm-svn: 160913

It is possible that an instruction can use and update EFLAGS.
When checking the safety, we should check the usage of EFLAGS first before
declaring it is safe to optimize due to the update.

llvm-svn: 160912

Jakob fixed ProcessImplicifDefs in r159149.

llvm-svn: 160910

llvm-svn: 160905

This makes it possible to quickly detect blocks that are outside the
trace.

llvm-svn: 160904

all tests accordingly.

Fixes PR13351.

Patch by shinichiro hamaji!

llvm-svn: 160899

llvm-svn: 160898

llvm-svn: 160897

into predecessor blocks to enable tail call optimization.

rdar://11958338

llvm-svn: 160894

A value number is a PHI def if and only if it begins at a block
boundary. This can be derived from the def slot, a separate flag is not
necessary.

llvm-svn: 160893

This option replaces the existing live interval computation with one
based on LiveRangeCalc.cpp. The new algorithm does not depend on
LiveVariables, and it can be run at any time, before or after leaving
SSA form.

llvm-svn: 160892

llvm-svn: 160889

Patch by Tyler Nowicki!

llvm-svn: 160888

Also add assertions to validate the iterator in the insert method overloads.

llvm-svn: 160882

llvm-svn: 160881

llvm-svn: 160880

llvm-svn: 160876

This can happen as long as the instruction is not reachable. Instcombine does generate these unreachable malformed selects when doing RAUW

llvm-svn: 160874

llvm-svn: 160873

Move some functions from MCRegisterInfo.h that don't need to be inline.

This shrinks llc by 8K.

llvm-svn: 160865

The rationale here is that it's hard to write loops containing vector erases and
it only shows up if the vector contains non-trivial objects leading to crashes
when forming them out of garbage memory.

llvm-svn: 160854

llvm-svn: 160852