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

llvm-svn: 124587

llvm-svn: 124583

llvm-svn: 124570

llvm-svn: 124569

(A+B) == A  ->  B == 0
A == (A+B)  ->  B == 0

llvm-svn: 124567

This is similar to the -unroll-threshold option. There should be no change in
behavior when -tail-dup-size is not explicit on the llc command line.

llvm-svn: 124564

by PR9088 fixes things.

llvm-svn: 124561

to do this and more, but would only do it if X/Y had only one use.  Spotted as the
most common missed simplification in SPEC by my auto-simplifier, now that it knows
about nuw/nsw/exact flags.  This removes a bunch of multiplications from 447.dealII
and 483.xalancbmk.  It also removes a lot from tramp3d-v4, which results in much
more inlining.

llvm-svn: 124560