Add support for vectors of pointers.

llvm-svn: 145801

Fixed deadstoreelimination bug where negative indices were incorrectly causing the optimisation to occur

Turns out long long + unsigned long long is unsigned.  Doh!

Fixes http://llvm.org/bugs/show_bug.cgi?id=11455

llvm-svn: 145731

Add FIXMEs to places that are non-trivial to fix.

llvm-svn: 145661

where it appeared beneficial to pass.
More of rdar://10500969

llvm-svn: 145630

InstructionSimplify.cpp.  Other fixups as needed.
Part of rdar://10500969

llvm-svn: 145559

Make GlobalMerge honor the preferred alignment on globals without an explicitly specified alignment.

<rdar://problem/10497732>.

llvm-svn: 145523

Potential bug in RewriteLoopBodyWithConditionConstant: use iterator should not be changed inside the uses enumeration loop.

llvm-svn: 145432

llvm-svn: 145420

This reverts r139450, fixes r139453, and adds much needed comments and a
unit test.

llvm-svn: 145367

SCEV should now be used for trip count analysis, not LoopInfo.

llvm-svn: 145262

llvm-svn: 145154

Suggested in code review by Eli.

That code in InstCombine looks kinda suspicious.

llvm-svn: 145013

Add support for custom names for library functions in TargetLibraryInfo.  Add a custom name for fwrite and fputs on x86-32 OSX.  Make SimplifyLibCalls honor the custom
names for fwrite and fputs.

Fixes <rdar://problem/9815881>.

llvm-svn: 144876

looking at the size of the pointee. Fixes PR11390!

llvm-svn: 144773

llvm-svn: 144721

llvm-svn: 144675

llvm-svn: 144442

Get rid of an optimization in SCCP which appears to have many issues.  Specifically, it doesn't handle many cases involving undef correctly, and it is missing other checks which
lead to it trying to re-mark a value marked as a constant with a different value.  It also appears to trigger very rarely.

Fixes PR11357.

llvm-svn: 144352

Size of data being pointed to wasn't always being checked so some small writes were killing big writes

Fixes <rdar://problem/10426753>

llvm-svn: 144312

Currently checks alignment and killing stores on a power of 2 boundary as this is likely
to trim the size of the earlier store without breaking large vector stores into scalar ones.

Fixes <rdar://problem/10140300>

llvm-svn: 144239

LICM pass now understands invariant load metadata.  Nothing generates this yet so it will currently never get used in real tests

llvm-svn: 144107

llvm-svn: 143808

the end of it is dead.", which appears to break bootstrapping LLVM.

llvm-svn: 143668

llvm-svn: 143634

Only currently done if the later store is writing to a power of 2 address or 
has the same alignment as the earlier store as then its likely to not break up
large stores into smaller ones

Fixes <rdar://problem/10140300>

llvm-svn: 143630

We've been hitting asserts in this code due to the many supported
combintions of modes (iv-rewrite/no-iv-rewrite) and IV types. This
second rewrite of the code attempts to deal with these cases systematically.

llvm-svn: 143546

silence -Wparentheses.

llvm-svn: 143534

Narrowest possible fix for PR11279.

llvm-svn: 143522

SimplifyLibCalls: Use IRBuilder.CreateGlobalString when creating a string for printf->puts, which correctly sets the unnamed_addr bit on the resulting GlobalVariable.

Fixes PR11264.

llvm-svn: 143289

Fixes rdar://10359193 Indvar LinearFunctionTestReplace assertion

llvm-svn: 143183

It is not safe to sink an alloca into a stacksave/stackrestore pair, so don't do that. <rdar://problem/10352360>

llvm-svn: 143093

element types, even though the element extraction code does. It is surprising
that this bug has been here for so long. Fixes <rdar://problem/10318778>.

llvm-svn: 142740

elimination on them too.

llvm-svn: 142735

Patch by Pranav Bhandarkar!

llvm-svn: 142556

tag on objc_retainBlock calls, which indicates that they may be
optimized away. rdar://10211286.

llvm-svn: 142298

possibility that it will span multiple CFG diamonds/triangles which
could have different controlling predicates.  rdar://10282956

llvm-svn: 142222

Some code want to check that *any* call within a function has the 'returns
twice' attribute, not just that the current function has one.

llvm-svn: 142221

obsolete. Check the attribute instead.
<rdar://problem/8031714>

llvm-svn: 142212

llvm-svn: 142204

There is no reason to have simple IR level pass in lib/Target.

llvm-svn: 142200