* The prologue is modified to read the __stack_chk_guard global and insert it
  onto the stack.

* The epilogue is modified to read the stored guard from the stack and compare
  it to the original __stack_chk_guard value. If they differ, then the
  __stack_chk_fail() function is called.

* The stack protector needs to be first on the stack (after the parameters) to
  catch any stack-smashing activities.

Front-end support will follow after a round of beta testing.

llvm-svn: 58673

llvm-svn: 58671

have its node id set. The new and and shift nodes are the nodes that need
the IDs. This fixes PR2982.

llvm-svn: 58655

llvm-svn: 58653

llvm-svn: 58651

llvm-svn: 58650

llvm-svn: 58644

llvm-svn: 58643

work correctly, and bring over a late change to ppcf128
SetCC handling.

llvm-svn: 58642

sized integers like i129, and also reduce the number
of assumptions made about how vaarg is implemented.
This still doesn't work correctly for small integers
like (eg) i1 on x86, since x86 passes each of them
(essentially an i8) in a 4 byte stack slot, so the
pointer needs to be advanced by 4 bytes not by 1 byte
as now.  But this is no longer a LegalizeTypes problem
(it was also wrong in LT before): it is a bug in the
operation expansion in LegalizeDAG: now LegalizeTypes
turns an i1 vaarg into an i8 vaarg which would work
fine if only the i8 vaarg was turned into correct code
later.

llvm-svn: 58635

to avoid overload ambiguities. This fixes build errors introduced
by r58623.

llvm-svn: 58632

llvm-svn: 58631

add a period at the end of the comment, ignoring the fact that the comment would be hard pressed to be considered a sentence, but if it makes Bill happy...

llvm-svn: 58630

Add binary encoding support for multiply instructions. Some blanks left to fill in, but the basics are there.

llvm-svn: 58626

This allows SCEV users to effectively calculate trip count.
LSR later on transforms back integer IVs to floating point IVs
later on to avoid int-to-float casts inside the loop.

llvm-svn: 58625

adding a TargetMachine member to the base TargetAsmInfo class instead.

llvm-svn: 58624

bits, use a union of a SimpleValueType enum and a regular Type*.

This increases the size of MVT on 64-bit hosts from 32 bits to 64 bits.
In most cases, this doesn't add significant overhead. There are places
in codegen that use arrays of MVTs, so these are now larger, but
they're small in common cases.

This eliminates restrictions on the size of integer types and vector
types that can be represented in codegen. As the included testcase
demonstrates, it's now possible to codegen very large add operations.
There are still some complications with using very large types. PR2880
is still open so they can't be used as return values on normal targets,
there are no libcalls defined for very large integers so operations
like multiply and divide aren't supported.

This also introduces a minimal tablgen Type library, capable of
handling IntegerType and VectorType. This will allow parts of
TableGen that don't depend on using SimpleValueType values to handle
arbitrary integer and vector types.

llvm-svn: 58623

llvm-svn: 58615

10 bytes long, but is passed in 12/16 bytes).

llvm-svn: 58608

llvm-svn: 58606

llvm-svn: 58598

llvm-svn: 58593

We're still waiting on code that actually analyzes them properly.

llvm-svn: 58592

llvm-svn: 58591

 * merge two weak functions by making them both alias a third non-weak fn
 * don't reimplement CallSite::hasArgument
 * whitelist the safe linkage types

llvm-svn: 58568

llvm-svn: 58563

cast from ‘const llvm::PointerType*’ to ‘unsigned int’
loses precision).

llvm-svn: 58561

exist before.  Updating the live intervals in that care is tricky in the general
case.

Evan, if you see a tighter guard condition for this, let me know.

llvm-svn: 58560

llvm-svn: 58559

This triggers only 60 times in llvm-test (look at .llvm.bc, not .linked.rbc)
and so it probably wont be turned on by default. Also, may of those are likely
to go away when PR2973 is fixed.

llvm-svn: 58557

by Richard Osborne.

llvm-svn: 58555

ConstantInt, and SI is the original cast instruction. This fixes
PR2996.

llvm-svn: 58549

target intrinsics that touches memory

llvm-svn: 58548

ready.

llvm-svn: 58547

llvm-svn: 58539

Based on patch by Martin Nowack!

llvm-svn: 58536

llvm-svn: 58533

llvm-svn: 58532

llvm-svn: 58529

llvm-svn: 58528