This test compares the output of llvm-cov against a coverage file
generated by gcov.

llvm-svn: 194038

This will allow for much easier testing when the input files are in a
different folder from the test script.

llvm-svn: 194034

This patch enables llvm-cov to correctly output the run count stored in
the GCDA file. GCOVProfiling currently does not generate this
information, so the GCDA run data had to be hacked on from a GCDA file
generated by gcc. This is corrected by a subsequent patch.

With the run and program data included, both llvm-cov and gcov produced
the same output.

llvm-svn: 194033

llvm-svn: 194032

ErrorOr had quiet a bit of complexity and indirection to be able to hold a user
type with the error.

That feature is not used anymore. This patch removes it, it will live in svn
history if we ever need it again.

If we do need it again, IMHO there is one thing that should be done
differently: Holding extra info in the error is not a property a function also
returning a value or not. The ability to hold extra info should be in the error
type and ErrorOr templated over it so that we don't need the funny looking
ErrorOr<void>.

llvm-svn: 194030

As with the other loop unrolling parameters (the unrolling threshold, partial
unrolling, etc.) runtime unrolling can now also be controlled via the
constructor. This will be necessary for moving non-trivial unrolling late in
the pass manager (after loop vectorization).

No functionality change intended.

llvm-svn: 194027

Revert r194019 to r194021, "Submit the basic port of the rest of ARM constant islands code to Mips."

It broke -Asserts build.

llvm-svn: 194026

ResolveFrameIndex had what appeared to be a very nasty hack for when the
frame-index referred to a callee-saved register. In this case it "adjusted" the
offset so that the address was correct if (and only if) the MachineInstr
immediately followed the respective push.

This "worked" for all forms of GPR & DPR but was only ever used to set the
frame pointer itself, and once this was put in a more sensible location the
entire state-tracking machinery it relied on became redundant. So I stripped
it.

The only wrinkle is that "add r7, sp, #0" might theoretically be slower (need
an actual ALU slot) compared to "mov r7, sp" so I added a micro-optimisation
that also makes emitARMRegUpdate and emitT2RegUpdate also work when NumBytes ==
0.

No test changes since there shouldn't be any functionality change.

llvm-svn: 194025

If an inline assembly operand has multiple constraints (e.g. "Ir" for immediate
or register) and an operand modifier (E.g. "w" for "print register as wN") then
we need to decide behaviour when the modifier doesn't apply to the constraint.

Previousely produced some combination of an assertion failure and a fatal
error. GCC's behaviour appears to be to ignore the modifier and print the
operand in the default way. This patch should implement that.

llvm-svn: 194024

when compiling with DEBUG.

llvm-svn: 194021

islands. I forgot to add it to svn on that patch. Ooops.

llvm-svn: 194020

Two test cases are added which reflect the next level of functionality:
constants getting moved to water areas that are out of range from the
initial placement at the end of the function and basic blocks being split to
create water when none exists that can be used. There is a bunch of this
code that is not complete and has been marked with IN_PROGRESS. I will
finish cleaning this all up during the next week or two and submit the
rest of the test cases. I have elminated some code for dealing with
inline assembly because to me it unecessarily complicates things and
some of the newer features of llvm like function attributies and builtin
assembler give me better tools to solve the alignment issues created
there. Also, for Mips16 I even have the option of not doing constant
islands in the present of inline assembler if I chose.

llvm-svn: 194019

llvm-svn: 194017

those produced by clang for the inline asm bswap conversion.

Modified from a patch by Chris Smowton.

llvm-svn: 194016

STL debug mode checks this.

llvm-svn: 194015

This fixes an assertion failure with a different sized address space.

llvm-svn: 194014

When the elements are extracted from a select on vectors
or a vector select, do the select on the extracted scalars
from the input if there is only one use.

llvm-svn: 194013

llvm-svn: 194011

llvm-svn: 194007

llvm-svn: 194006

llvm-svn: 194001

In order to create an ObjectFile implementation that uses bitcode files, we
need to propagate the bitcode errors to the ObjectFile interface, so we need
to convert it to use the same error handling as ObjectFile: error_code.

llvm-svn: 193996

llvm-svn: 193992

llvm-svn: 193988

This is just bdver2 + FSGSBase.

llvm-svn: 193984

stack traces by default if you use PrettyStackTraceProgram, so that existing LLVM-based 
tools will continue to get it without any changes.

llvm-svn: 193971

llvm-svn: 193968

llvm-svn: 193967

llvm-svn: 193966

llvm-svn: 193965

added EVEX_KZ to tablegen

llvm-svn: 193959

llvm-svn: 193958

llvm-svn: 193957

Instead of doing a RPO traversal of the whole function remember the blocks
containing gathers (typically <= 2) and scan them in dominator-first order.

The actual CSE is still quadratic, but I'm not confident that adding a
scoped hash table here is worth it as we're only looking at the generated
instructions and not arbitrary code.

llvm-svn: 193956

This reverts commit r193356, it caused PR17781.

A reduced test case covering this regression has been added to the test suite.

llvm-svn: 193955

llvm-svn: 193954

llvm-svn: 193953

OCaml's type unit is not compatible with C's type void.

llvm-svn: 193952

llvm-svn: 193951

llvm-svn: 193950