Enable execution dependency fix pass for YMM registers when AVX2 is enabled. Add AVX2 logical operations to list of replaceable instructions.

llvm-svn: 144179

llvm-svn: 144176

llvm-svn: 144174

or not. Patch by Brendon Cahoon!

llvm-svn: 144173

llvm-svn: 144172

llvm-svn: 144169

remove a fair number of unnecessary materialized constants.
rdar://10412592

llvm-svn: 144163

llvm-svn: 144154

During the initial RPO traversal of the basic blocks, remember the ones
that are incomplete because of back-edges from predecessors that haven't
been visited yet.

After the initial RPO, revisit all those loop headers so the incoming
DomainValues on the back-edges can be properly collapsed.

This will properly fix execution domains on software pipelined code,
like the included test case.

llvm-svn: 144151

When merging two uncollapsed DomainValues, place a link to the active
DomainValue from the passive DomainValue.  This allows old stale
references to the passive DomainValue to be updated to point to the
active DomainValue.

The new resolve() function finds the active DomainValue and updates the
pointer.

This change makes old live-out lists more useful since they may contain
uncollapsed DomainValues that have since been merged into other
DomainValues.

llvm-svn: 144149

llvm-svn: 144148

This allows clear() to be called on a DomainValue with references.

llvm-svn: 144147

Patch by Jack Carter.

llvm-svn: 144139

*headdesk*

llvm-svn: 144138

There is no need to involve the LiveRegs array and kill() any longer.

llvm-svn: 144133

No functional change.

llvm-svn: 144132

This new function will decrement the reference count, and collapse a
domain value when the last reference is gone.

This simplifies DomainValue reference counting, and decouples it from
the LiveRegs array.

llvm-svn: 144131

and is different than the normal name.

llvm-svn: 144130

basic blocks containing calls. This works around a problem in which
these artificial dependencies can get tied up in calling seqeunce
scheduling in a way that makes the graph unschedulable with the current
approach of using artificial physical register dependencies for calling
sequences. This fixes PR11314.

llvm-svn: 144124

llvm-svn: 144123

No functional change intended.

llvm-svn: 144122

llvm-svn: 144121

The old value may still be referenced by some live-out list, and we
don't wan't to collapse those instructions twice.

This fixes the "Can only swizzle VMOVD" assertion in some armv7 SPEC
builds.

<rdar://problem/10413292>

llvm-svn: 144117

llvm-svn: 144111

LICM pass now understands invariant load metadata.  Nothing generates this yet so it will currently never get used in real tests

llvm-svn: 144107

llvm-svn: 144105

Add support for trimming constants to GetDemandedBits. This fixes some funky
constant generation that occurs when stores are expanded for targets that don't
support unaligned stores natively.

llvm-svn: 144102

When this field is true it means that the load is from constant (runt-time or compile-time) and so can be hoisted from loops or moved around other memory accesses

llvm-svn: 144100

llvm-svn: 144099

llvm-svn: 144095

implements unaligned loads and stores with assembler macro-instructions
ulw, usw, ulh, ulhu, ush, and this patch emits corresponding instructions
instead of these macros. Since each unaligned load/store is expanded
into two corresponding loads/stores where offset for second load/store is
modified by +3 (for words) or +1 (for halfwords).

Patch by Petar Jovanovic and Sasa Stankovic.

llvm-svn: 144081

llvm-svn: 144071

llvm-svn: 144057

Add a bunch of calls to RemoveDeadNode in LegalizeDAG, so legalization doesn't get confused by CSE later on.  Fixes PR11318.

Re-commit of r144034, with an extra fix so that RemoveDeadNode doesn't blow up.

llvm-svn: 144055

Add x86 isel logic and patterns to match movlps from clang generated IR for _mm_loadl_pi(). rdar://10134392, rdar://10050222

llvm-svn: 144052

callee's responsibility to sign or zero-extend the return value.  The additional
test case just checks to make sure the calls are selected (i.e., -fast-isel-abort
doesn't assert).

llvm-svn: 144047

llvm-svn: 144044

Delete!

llvm-svn: 144043

DomainValues that are only used by "don't care" instructions are now
collapsed to the first possible execution domain after all basic blocks
have been processed.  This typically means the PS domain on x86.

For example, the vsel_i64 and vsel_double functions in sse2-blend.ll are
completely collapsed to the PS domain instead of containing a mix of
execution domains created by isel.

llvm-svn: 144037

Fixes r8429

llvm-svn: 144036