llvm-svn: 190080

llvm-svn: 190079

GlobalAdderss nodes that appeared in more than one basic block were
being counted twice.

llvm-svn: 190078

llvm-svn: 190077

This pass was segfaulting when it ran into a non-intrinsic function
call.  Function calls are not supported, so now instead of segfaulting,
we will get an assertion failure with a nice error message.

I'm not sure how to test this using lit.

llvm-svn: 190076

we're proposing it for DWARF5.

No functional change intended.

llvm-svn: 190074

llvm-svn: 190067

llvm-svn: 190064

llvm-svn: 190060

This removes the custom ISD Node: MEMBARRIER and replaces it
with an intrinsic.

llvm-svn: 190055

These were pretty straightforward instructions, with some assembly support
required for HLT.

The ARM assembler is keen to split the instruction mnemonic into a
(non-existent) 'H' instruction with the LT condition code. An exception for
HLT is needed.

HLT follows the same rules as BKPT when in IT blocks, so the special BKPT
hadling code has been adapted to handle HLT also.

Regression tests added including diagnostic tests for out of range immediates
and illegal condition codes, as well as negative tests for pre-ARMv8.

llvm-svn: 190053

Solution is not sufficient to prevent 'mov pc, lr' being emitted for jump table code.
Test case doesn't trigger the added functionality.

llvm-svn: 190047

This improves code generation for jump tables by avoiding the emission of "mov pc, lr" which could fool the processor into believing this is a return from a function causing mispredicts. The code generation logic for jump tables uses ADR to materialize the address of the jump target.

Patch by Daniel Stewart!
   

llvm-svn: 190043

For now these are just used to handle scalar ANDs, ORs and XORs in which
all operands are memory.

llvm-svn: 190041

llvm-svn: 190035

llvm-svn: 190034

In sparc, setjmp stores only the registers %fp, %sp, %i7 and %o7. longjmp restores
the stack, and the callee-saved registers (all local/in registers: %i0-%i7, %l0-%l7)
using the stored %fp and register windows. However, this does not guarantee that the longjmp
will restore the registers, as they were when the setjmp was called. This is because these
registers may be clobbered after returning from setjmp, but before calling longjmp.

This patch prevents the registers %i0-%i5, %l0-l7 to live across the setjmp call using the register mask.  

llvm-svn: 190033

This allows linking libraries like the asan RTL.

llvm-svn: 190028

llvm-svn: 190021

llvm-svn: 190019

llvm-svn: 190015

Fast register pressure tracking currently only takes effect during
bottom up scheduling. Forcing this is a bit faster and simpler for
targets that don't have many scheduling constraints and don't need
top-down scheduling.

llvm-svn: 190014

llvm-svn: 190013

than the spec dwarf constants.

llvm-svn: 190011

llvm-svn: 190009

llvm-svn: 190004

llvm-svn: 190003

without a limiting factor.

Update all testcases accordingly.

llvm-svn: 190002

Needs testcase updates.

llvm-svn: 190000

llvm-svn: 189999

llvm-svn: 189998

llvm-svn: 189997

llvm-svn: 189995

llvm-svn: 189994

llvm-svn: 189993

llvm-svn: 189992

If the instruction window is < NumRegs/2, pressure tracking is not
likely to be effective. The scheduler has to process a very large
number of tiny blocks. We want this to be fast.

llvm-svn: 189991

llvm-svn: 189990

llvm-svn: 189989

llvm-svn: 189988