llvm-svn: 139670

#line directives with the needed support in the lexer.  Next will be to build
a simple file/line# table mapping source SMLoc's for later use by diagnostics.
And the last step will be to get the diagnostics to use the mapping for file
and line numbers.

llvm-svn: 139669

It seems i686-cygwin-gcc-4.3 does not accept 64-bit constant without LL.

llvm-svn: 139664

When a ParentVNI maps to multiple defs in a new interval, its live range
may still be derived directly from RegAssign by transferValues().

On the other hand, when instructions have been rematerialized or
hoisted, it may be necessary to completely recompute live ranges using
LiveRangeCalc::extend() to all uses.

Use a bit in the value map to indicate that a live range must be
recomputed.  Rename markComplexMapped() to forceRecompute().

This fixes some live range verification errors when
-split-spill-mode=size hoists back-copies by recomputing source ranges
when RegAssign kills can't be moved.

llvm-svn: 139660

llvm-svn: 139658

llvm-svn: 139656

llvm-svn: 139652

Whenever the complement interval is defined by multiple copies of the
same value, hoist those back-copies to the nearest common dominator.

This ensures that at most one copy is inserted per value in the
complement inteval, and no phi-defs are needed.

llvm-svn: 139651

llvm-svn: 139649

llvm-svn: 139646

llvm-svn: 139645

llvm-svn: 139642

llvm-svn: 139641

llvm-svn: 139639

llvm-svn: 139637

llvm-svn: 139636

llvm-svn: 139635

tries to match a dead MipsLo node (explanation in the link below).

http://article.gmane.org/gmane.comp.compilers.llvm.devel/42757/match=dagcombiner+dead

llvm-svn: 139634

llvm-svn: 139633

llvm-svn: 139632

llvm-svn: 139631

llvm-svn: 139630

llvm-svn: 139629

llvm-svn: 139628

This introduces a new library to LLVM: libDebugInfo. It will provide debug information
parsing to LLVM. Much of the design and some of the code is taken from the LLDB project.

It also contains an llvm-dwarfdump tool that can dump the abbrevs and DIEs from an
object file. It can be used to write tests for DWARF input and output easily.

llvm-svn: 139627

It is an endian-aware helper that can read data from a StringRef. It will
come in handy for DWARF parsing. This class is inspired by LLDB's
DataExtractor, but is stripped down to the bare minimum needed for DWARF.

Comes with unit tests!

llvm-svn: 139626

more strict about the alignment checking. This was found by inspection
and I don't have any testcases so far, although the llvm testsuite runs
without any problem.

llvm-svn: 139625

to be in the VSELECT operands order, so I'll leave the fix for Nadav.

llvm-svn: 139624

xor/and/or (For example SSE2).

llvm-svn: 139623

llvm-svn: 139622

llvm-svn: 139617

llvm-svn: 139616

This function is used to flag values where the complement interval may
overlap other intervals.  Call it from overlapIntv, and use the flag to
fully recompute those live ranges in transferValues().

llvm-svn: 139612

Teach the Thumb ASM parser that BKPT is allowed in IT blocks, even though it is always executed unconditionally.

llvm-svn: 139610

llvm-svn: 139608

llvm-svn: 139607

llvm-svn: 139606

Three out of four clients prefer this interface which is consistent with
extendIntervalEndTo() and LiveRangeCalc::extend().

llvm-svn: 139604

The complement interval may overlap the other intervals created, so use
a separate LiveRangeCalc instance to compute its live range.

A LiveRangeCalc instance can only be shared among non-overlapping
intervals.

llvm-svn: 139603

llvm-svn: 139601