llvm-svn: 93832

llvm-svn: 93831

Fix r93758. Use isel patterns instead of c++ selection code to select rbit and make sure we pick different instructions for ARM vs. Thumb2.

llvm-svn: 93829

llvm-svn: 93824

llvm-svn: 93819

llvm-svn: 93818

comments (fast isel, X86).  This doesn't seem
to break any functionality, but will introduce
cases where -g affects the generated code.  I'll
be fixing that.

llvm-svn: 93811

Add comment that MDNode::getFunction() is not to be used by performance-critical code (currently only used by AsmWriter)

llvm-svn: 93802

match.

llvm-svn: 93798

llvm-svn: 93797

- Greatly improve the comments to the getLSDAEncoding method.

llvm-svn: 93796

patch by Michael Beck!

llvm-svn: 93793

aggressive changed the canonical form from sext(trunc(x)) to ashr(lshr(x)),
make sure to transform a couple more things into that canonical form,
and catch a case where we missed turning zext/shl/ashr into a single sext.

llvm-svn: 93787

llvm-svn: 93784

to something more accurate.

llvm-svn: 93782

llvm-svn: 93781

be used independently of SourceMgr.

llvm-svn: 93780

printing via <<. Otherwise we just print the pointer value.

llvm-svn: 93777

llvm-svn: 93776

llvm-svn: 93775

llvm-svn: 93774

Instcombine does this but apparently there are situations where this pattern will escape the optimizer and / or created by isel. Here is a case that's seen in JavaScriptCore:
  %t1 = sub i32 0, %a
  %t2 = add i32 %t1, -1
The dag combiner pattern: ((c1-A)+c2) -> (c1+c2)-A
will fold it to -1 - %a.

llvm-svn: 93773

llvm-svn: 93771

llvm-svn: 93764

Simplify MDNode::getFunction() and assertLocalFunction() by avoiding extra Function* variable and smallptrset since function-local metadata cannot be cyclic

llvm-svn: 93762

the various MOV (register) instructions (16-bit Thumb), including tBRIND (the
indirect branch).  Instead of '1', it should be specified as '?', because GPR
only specifies the register class, which includes both hi-and-lo registers.

llvm-svn: 93759

"On ARMv6T2 this turns cttz into rbit, clz instead of the 4 instruction
 sequence it is now."

llvm-svn: 93758

because it points to an alloca instruction through metadata.

llvm-svn: 93757

.ll parser, but PR6070 wants it in the verifier too.

llvm-svn: 93756

llvm-svn: 93755

  idea, but unfortunately necessary.
- Default to using 4-bytes for the LSDA pointer encoding to agree with the
  encoded value in the CIE.

llvm-svn: 93753

Make printing of metadata more robust when function is not found (which is the normal situation for non function-local metadata)

llvm-svn: 93748

llvm-svn: 93729

llvm-svn: 93724

llvm-svn: 93723

with the rest of the assembly output, is easier to read, and matches the
expected output for gcc's Neon tests.

llvm-svn: 93703

llvm-svn: 93702

as it emits code.  Switch .globl directives to use OutStreamer instead of
doing it textually (in x86)

llvm-svn: 93700

llvm-svn: 93699

llvm-svn: 93698