llvm/lib/CodeGen, branch release_33

Merging r181296:

2013-05-08T00:28:30Z

------------------------------------------------------------------------ r181296 | timurrrr | 2013-05-07 00:47:47 -0700 (Tue, 07 May 2013) | 1 line Fix the VS2010 build broken by r181271 ------------------------------------------------------------------------ git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_33@181379 91177308-0d34-0410-b5e6-96231b3b80d8

DebugInfo: Support imported modules in lexical blocks

2013-05-06T23:33:07Z

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181271 91177308-0d34-0410-b5e6-96231b3b80d8

Remove unnecessary instance variable and rework logic accordingly.

2013-05-06T17:50:50Z

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181227 91177308-0d34-0410-b5e6-96231b3b80d8

Grammar.

2013-05-06T17:50:46Z

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181226 91177308-0d34-0410-b5e6-96231b3b80d8

Fix slightly too aggressive conact_vector optimization.

2013-05-06T08:06:13Z

(Would sometimes optimize away conacts used to extend a vector with undef values) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181186 91177308-0d34-0410-b5e6-96231b3b80d8

Teach if-converter to avoid removing BBs whose addresses are takne. rdar://13782395

2013-05-05T18:03:49Z

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181160 91177308-0d34-0410-b5e6-96231b3b80d8

InlineSpiller: Remove quadratic behavior.

2013-05-05T11:29:14Z

No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181149 91177308-0d34-0410-b5e6-96231b3b80d8

For ARM backend, fixed "byval" attribute support.

2013-05-05T07:48:36Z

Now even the small structures could be passed within byval (small enough to be stored in GPRs). In regression tests next function prototypes are checked: PR15293: %artz = type { i32 } define void @foo(%artz* byval %s) define void @foo2(%artz* byval %s, i32 %p, %artz* byval %s2) foo: "s" stored in R0 foo2: "s" stored in R0, "s2" stored in R2. Next AAPCS rules are checked: 5.5 Parameters Passing, C.4 and C.5, "ParamSize" is parameter size in 32bit words: -- NSAA != 0, NCRN < R4 and NCRN+ParamSize > R4. Parameter should be sent to the stack; NCRN := R4. -- NSAA != 0, and NCRN < R4, NCRN+ParamSize < R4. Parameter stored in GPRs; NCRN += ParamSize. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181148 91177308-0d34-0410-b5e6-96231b3b80d8

Add ArrayRef constructor from None, and do the cleanups that this constructor enables

2013-05-05T00:40:33Z

Patch by Robert Wilhelm. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181138 91177308-0d34-0410-b5e6-96231b3b80d8

TiedTo flag can now be placed on implicit operands. isTwoAddrUse() should look

2013-05-02T02:07:32Z

at all of the operands. Previously it was skipping over implicit operands which cause infinite looping when the two-address pass try to reschedule a two-address instruction below the kill of tied operand. I'm unable to come up with a reasonably sized test case. rdar://13747577 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180906 91177308-0d34-0410-b5e6-96231b3b80d8