overflow (nsw flag), which was disabled because it breaks 254.gap.  I have
informed the GAP authors of the mistake in their code, and arranged for the
testsuite to use -fwrapv when compiling this benchmark.

llvm-svn: 124746

The algorithm for identifying which operand is invalid will now always point to
some operand and not the mnemonic sometimes.  The change is now that ErrorInfo
is the index of the highest operand that does not match for any of the matching
mnemonics records.  And no longer the ~0U value when the mnemonic matches and
not every record with a matching mnemonic has the same mismatching operand
index.

llvm-svn: 124734

llvm-svn: 124725

This makes the job of the later optzn passes easier, allowing the vast amount of
icmp transforms to chew on it.

We transform 840 switches in gcc.c, leading to a 16k byte shrink of the resulting
binary on i386-linux.

The testcase from README.txt now compiles into
  decl  %edi
  cmpl  $3, %edi
  sbbl  %eax, %eax
  andl  $1, %eax
  ret

llvm-svn: 124724

llvm-svn: 124722

may be useful to understand "none", this is not the place for it.  Tweak
the fix to Normalize while there: the fix added in 123990 works correctly,
but I like this way better.  Finally, now that Triple understands some
non-trivial environment values, teach the unittests about them.

llvm-svn: 124720

that might have changed been affected by a merge elsewhere will have been
removed from the function set, and it isn't needed for performance because we
call grow() ahead of time to prevent reallocations.

llvm-svn: 124717

reassociation. No testcase, because I wasn't able to create a testcase
which actually demonstrates a problem.

llvm-svn: 124713

llvm-svn: 124712

prefix would be misinterpreted in some cases on 32-bit
x86 platforms.  Thanks to Olivier Meurant for identifying
the bug.

llvm-svn: 124709

the load, then it may be legal to transform the load and store to integer
load and store of the same width.

This is done if the target specified the transformation as profitable. e.g.
On arm, this can transform:
vldr.32 s0, []
vstr.32 s0, []

to

ldr r12, []
str r12, []

rdar://8944252

llvm-svn: 124708

llvm-svn: 124705

This is completely untested but pretty straightforward, so hopefully I
got it right.

llvm-svn: 124694

llvm-svn: 124688

llvm-svn: 124687

Patch by Brian G. Lucas!

llvm-svn: 124679

llvm-svn: 124677

[AVX] Implement EnforceSmallerThan for mixed int/fp type lists.  This
makes type checking for extract_subvector and insert_subvector more
robust and will allow stricter typechecking of more patterns in the
future.

This change handles int and fp as disjoint sets so that it will
enforce integer types to be smaller than the largest integer type and
fp types to be smaller than the largest fp type.  There is no attempt
to check type sizes across the int/fp sets.

llvm-svn: 124672

llvm-svn: 124664

llvm-svn: 124659

pattern matching can also pattern match undef, creating a more uniform
style.

llvm-svn: 124657

llvm-svn: 124656

llvm-svn: 124655

llvm-svn: 124652

different visibilities.

llvm-svn: 124650

llvm-svn: 124645

llvm-svn: 124641

llvm-svn: 124640

llvm-svn: 124639

llvm-svn: 124635

complain about duplicated definitions.

llvm-svn: 124634

llvm-svn: 124611

While printing "interesting" breakpoint locations for debug info quality test harness, focus only on entry block's terminator for now.

llvm-svn: 124610

Enumerate .code16/32/64 instead of checking .code prefix. This
unbreaks some ARM tests.

llvm-svn: 124608

llvm-svn: 124605

llvm-svn: 124604

all lead to a silent miscompilation of code.

llvm-svn: 124603

Fix vector sign extend to put the source and destination types in the
correct places.

llvm-svn: 124601

llvm-svn: 124599

for dlopen/dlerror.

Patch by arrowdodger!

llvm-svn: 124590