use the old behavior, the flag is -O0. This change allows for finer-grained
control over which optimizations are run at different -O levels.

Most of this work was pretty mechanical. The majority of the fixes came from
verifying that a "fast" variable wasn't used anymore. The JIT still uses a
"Fast" flag. I'm not 100% sure if it's necessary to change it there...

llvm-svn: 70270

llvm-svn: 70262

llvm-svn: 70247

llvm-svn: 70245

between the comparison's iv stride and the candidate stride is
exactly -1.

llvm-svn: 70244

the comparison operators were not only unnecessary in the presence of the
implicit conversion; they caused ambiguous overload errors. So I deleted them.

llvm-svn: 70243

information to simplify [sz]ext({a,+,b}) to {zext(a),+,[zs]ext(b)},
as appropriate.

These functions and the trip count code each call into the other, so
this requires careful handling to avoid infinite recursion. During
the initial trip count computation, conservative SCEVs are used,
which are subsequently discarded once the trip count is actually
known.

Among other benefits, this change lets LSR automatically eliminate
some unnecessary zext-inreg and sext-inreg operation where the
operand is an induction variable.

llvm-svn: 70241

only llvm-bcanalyzer wants this info.

llvm-svn: 70239

This should have no effect on generated code, but makes the intermediate state
of the coalescer more sane.

llvm-svn: 70238

no-longer needed workarounds.

llvm-svn: 70234

llvm-svn: 70233

llvm-svn: 70226

PR2957

ISD::VECTOR_SHUFFLE now stores an array of integers representing the shuffle
mask internal to the node, rather than taking a BUILD_VECTOR of ConstantSDNodes
as the shuffle mask.  A value of -1 represents UNDEF.

In addition to eliminating the creation of illegal BUILD_VECTORS just to 
represent shuffle masks, we are better about canonicalizing the shuffle mask,
resulting in substantially better code for some classes of shuffles.

llvm-svn: 70225

and % abbreviated.  For example:

	Record Histogram:
		  Count    # Bits   % Abv  Record Kind
		  25738   3424174  100.00  SM_SLOC_INSTANTIATION_ENTRY
		    814    562079  100.00  SM_SLOC_FILE_ENTRY
		    798     34110          SM_HEADER_FILE_INFO
		      3     91104  100.00  SM_SLOC_BUFFER_BLOB
		      3       498  100.00  SM_SLOC_BUFFER_ENTRY
		      1       465          SM_LINE_TABLE

llvm-svn: 70215

instead of ostreams for formatting.

llvm-svn: 70214

Fix PR4056. It's possible a physical register def is dead if its implicit use is deleted by two-address pass.

llvm-svn: 70213

llvm-svn: 70212

to precisely describe the h-register subreg register classes.
Thanks to Jakob Stoklund Olesen for spotting this and for the
initial patch!

Also, make getStoreRegOpcode and getLoadRegOpcode aware of the
needs of h registers.

llvm-svn: 70211

GR32_ABCD, and GR64_ABCD, respectively, to help describe them.

llvm-svn: 70210

llvm-svn: 70209

llvm-svn: 70208

building without optimization and building with checking.

llvm-svn: 70205

llvm-svn: 70197

another stub, but then never calling the jitted function) can cause the JIT to
leave a stub in place. Judging by the comments this is a known deficiency, so
we're just not going to use AssertingVH for the StubToFunctionTy map.

Also shorten some lines longer than 80 columns.

This fixes the "make check" failure with ocaml on x86-64 linux.

llvm-svn: 70185

Now that any size of integer indices are allowed for sequential types, remove the unneccessary gyan about promoting them.

llvm-svn: 70181

llvm-svn: 70180

the trunc is directly replaced with the smaller load, so don't
try to create a new sext node. This fixes PR4050.

llvm-svn: 70179

llvm-svn: 70176

or when some other std::exception is thrown.

llvm-svn: 70175

BLOCKNAME and SETRECORDNAME.  This allows a bitcode
file to be self describing with pretty names for 
records and blocks in addition to numbers.  This
enhances llvm-bcanalyzer to use this to print prettily.

llvm-svn: 70165

llvm-svn: 70159

state out of the BitstreamReader class into a BitstreamCursor class.
Doing this allows the client to have multiple cursors into the same
file, each with potentially different live block stacks and
abbreviation records.

llvm-svn: 70157

llvm-svn: 70151

llvm-svn: 70148

64-bit build.

llvm-svn: 70147

llvm-svn: 70138

Any size of integral indices are allowed in gep for indexing into sequential types. Also adding a test case to check the indices type allowed into struct.

llvm-svn: 70134

Josef Eisl!

llvm-svn: 70087

llvm-svn: 70085

Patch by Jeffrey Yasskin!

llvm-svn: 70084