llvm-svn: 110384

Split the tag and value members of LVILatticeVal in preparation for expanding the lattice to something that won't fit in two bits.

llvm-svn: 110383

response from getModRefInfo is not useful here. Instead, check for identical
calls only in the NoModRef case.

Reapply r110270, and strengthen it to compensate for the memdep changes.
When both calls are readonly, there is no dependence between them.

llvm-svn: 110382

as a positive consequence the CallSite::getCallee() methods now can be rewritten to be
a bit more efficient

llvm-svn: 110380

llvm-svn: 110371

llvm-svn: 110369

register for local access when it's closer to the stack slot being refererenced
than the stack pointer. Make sure to take into account any argument frame
SP adjustments that are in affect at the time.

rdar://8256090

llvm-svn: 110366

llvm-svn: 110363

be killed before being redefined.

These checks are usually disabled, and usually fail when enabled. We de facto
allow live registers to be redefined without a kill, the corresponding
assertions in RegScavenger were removed long ago.

llvm-svn: 110362

Partial fix for PR7792.

llvm-svn: 110361

instructions.

llvm-svn: 110360

llvm-svn: 110359

Partial fix for PR7792.

llvm-svn: 110358

we sometimes compare singular iterators, reported by ENABLE_EXPENSIVE_CHECKS.
This fixes PR7825.

llvm-svn: 110355

preserves the existing behavior, as it seems a concious choice to allow RS to
be null and BigStack marked true.

llvm-svn: 110307

llvm-svn: 110293

llvm-svn: 110292

one is a suffix of the other, and FileCheck accepts superstrings.
Adjust the output to avoid this problem.

llvm-svn: 110280

because it could create such things. This fixes a MingW buildbot test failure.

llvm-svn: 110279

uses.

llvm-svn: 110274

to return Ref if the left callsite only reads memory read or written
by the right callsite; fix BasicAliasAnalysis to implement this.

Add AliasAnalysisEvaluator support for testing the two-callsite
form of getModRefInfo.

llvm-svn: 110270

llvm-svn: 110269

llvm-svn: 110268

llvm-svn: 110267

This helps avoid silly code:

    %R0<def = LOAD <fi#5>
    STORE <fi#5>, %R0<kill>

llvm-svn: 110266

llvm-svn: 110259

simplify the call frame pseudo instructions. In that situation, the
calculations for estimating the stack size will be way off, leading to
not having an emergency spill slot when we need one. It should be possible
to be more precise about tracking the adjustment values, but not really
necessary for correctness. Upcoming cleanups for PEI in general will
render that moot.

llvm-svn: 110258

We are now at a point where we can split around simple single-entry, single-exit
loops, although still with some bugs.

llvm-svn: 110257

llvm-svn: 110256

llvm-svn: 110255

llvm-svn: 110248

See PR5201. There is no way to know if direct calls will be within the allowed
range for BL. Hence emit all calls as indirect when in JIT mode.
Without this long-running applications will fail to JIT on PowerPC with a
relocation failure.

llvm-svn: 110246

llvm-svn: 110244

using wider types than are necessary.

llvm-svn: 110241

be triggered by valid, if dubious, IR.

llvm-svn: 110240

While spilling live registers at the end of block check whether they are used by DBG_VALUE machine instructions or not. If a spilled register is used by DBG_VALUE machine instruction then insert a new DBG_VALUE machine instruction to encode variable's new location on stack.

llvm-svn: 110235

llvm-svn: 110234

Experiments show that we can safely increase our unrolling threshold without unduly impacting code size, particularly
since unrolling is not enabled at -Os.

llvm-svn: 110233

seem to be working correctly.  No functional change.

llvm-svn: 110226

llvm-svn: 110224