Stop using memdep for a check that didn't really make sense with memdep. In terms of specific issues, using memdep here checks irrelevant instructions and won't work properly once we start returning "unknown" more aggressively from memdep.

llvm-svn: 133035

the bits being cleared by the AND are not demanded by the BFI.

The previous BFI dag combine rule was actually incorrect (or used to be
correct until BFI representation changed).

rdar://9609030

llvm-svn: 133034

Change the output for -Wshift-overflow and
-Wshift-sign-overflow to an unsigned hexadecimal. It makes
more sense for looking at bits than a signed decimal does.
Also, change the diagnostic's wording from "overrides"
to "sets".

This uses a new optional argument in APInt::toString()
that adds the '0x' prefix to hexademical numbers.

This fixes PR 9651.

Patch by nobled@dreamwidth.org!

llvm-svn: 133033

toString() now takes an optional bool argument that,
depending on the radix, adds the appropriate prefix
to the integer's string representation that makes it into a
meaningful C literal, e.g.:

hexademical: '-f' becomes '-0xf'
octal: '77' becomes '077'
binary: '110' becomes '0b110'

Patch by nobled@dreamwidth.org!

llvm-svn: 133032

Add "unknown" results for memdep, which mean "I don't know whether a dependence for the given instruction exists in the given block".  This cleans up all the existing hacks in memdep which represent this concept by returning clobber with various unrelated instructions.

llvm-svn: 133031

llvm-svn: 133030

No functional change intended.

llvm-svn: 133029

Add an optimization that looks for a specific pair-wise add pattern and generates a vpaddl instruction instead of scalarizing the add.
Includes a test case.

llvm-svn: 133027

llvm-svn: 133026

inference, to be used (only) by the Objective-C rewriter.

llvm-svn: 133025

[format strings] correctly suggest correct type for '%@' specifiers.  Fixes <rdar://problem/9607158>.

llvm-svn: 133024

llvm-svn: 133023

converted to add x,x if x is a undef.  add undef, undef does not guarantee
that the resulting low order bit is zero.
Fixes <rdar://problem/9453156> and <rdar://problem/9487392>.

llvm-svn: 133022

llvm-svn: 133021

llvm-svn: 133020

command produces error output on stdout instead of stderr (and suppress the
stderr output while at it).

llvm-svn: 133019

PR10136: fix PPCTargetLowering::LowerCall_SVR4 so that a necessary CopyToReg doesn't appear to be dead.

Roman, since you're writing tests for other PPC-SVR4 vararg-related stuff, would you mind writing a test for this?

llvm-svn: 133018

llvm-svn: 133017

no-format-y2k turn off -Wformat altogether. 
// rdar://9504680

llvm-svn: 133015

llvm-svn: 133014

Apparently llvm itself generates undefined assembler local labels, causing
self-hosting problems with this patch. Reverting until that's sorted out.

llvm-svn: 133013

llvm-svn: 133012

llvm-svn: 133011

When an assembler local symbol is used but not defined in a module, a
Darwin assembler wants to issue a diagnostic to that effect.

rdar://9559714

llvm-svn: 133010

llvm-svn: 133009

Provide names for template and function parameters in forward declarations.  The purpose is to aid automated documentation tools.

llvm-svn: 133008

llvm-svn: 133007

This patch is a starting point for the attach functionality.

Signed-off-by: Johnny Chen <johnny.chen@apple.com>
llvm-svn: 133006

lexer is not a paste operator, it is a normal token.  This fixes a conformance
issue shown here:
http://p99.gforge.inria.fr/c99-conformance/c99-conformance-clang-2.9.html

and it defines away the crash from before.

llvm-svn: 133005

Dan noted that this would work on the case shown on the commit message. I think
the case that was failing was a bb ending with a redundant conditional jump:

...
jne foo

foo:
...

I was unable to find any such case in the tests or in a debug build of clang,
so I will revert this part of the patch and watch the bots.

llvm-svn: 133004

llvm-svn: 133003

llvm-svn: 133002

llvm-svn: 133001

llvm-gcc-x86_64-linux-selfhost buildbot and others.

llvm-svn: 133000

Measure the worst case number of probes for a miss instead of the less
conservative number of probes required for an insertion.

Lower the limit to < 6 probes worst case.

This doubles the size of the ARM and X86 hash tables, other targets are
unaffected. LiveVariables runs 12% faster with this change.

<rdar://problem/9598545>

llvm-svn: 132999

in a noexcept exception specification because it isn't part of the
canonical type. This ensures that we keep the exact expression written
in the noexcept exception specification, rather than accidentally
"adopting" a previously-written and canonically "equivalent" function
prototype. Fixes PR10087.

llvm-svn: 132998

Add error message; clean up comment.

llvm-svn: 132997

llvm-svn: 132996

llvm-svn: 132995

llvm-svn: 132994