Implicit def instructions, e.g. X86::IMPLICIT_DEF_GR32, are always re-materializable and they should not be spilled.

llvm-svn: 44960

llvm-svn: 44045

adjustment fields, and an optional flag. If there is a "dynamic_stackalloc" in
the code, make sure that it's bracketed by CALLSEQ_START and CALLSEQ_END. If
not, then there is the potential for the stack to be changed while the stack's
being used by another instruction (like a call).

This can only result in tears...

llvm-svn: 44037

Target maintainers: please check that the instructions for your target are correctly marked.

llvm-svn: 44012

llvm-svn: 41863

llvm-svn: 41812

llvm-svn: 41626

llvm-svn: 40887

llvm-svn: 40658

llvm-svn: 40132

InOperandList. This gives one piece of important information: # of results
produced by an instruction.
An example of the change:
def ADD32rr  : I<0x01, MRMDestReg, (ops GR32:$dst, GR32:$src1, GR32:$src2),
                 "add{l} {$src2, $dst|$dst, $src2}",
                 [(set GR32:$dst, (add GR32:$src1, GR32:$src2))]>;
=>
def ADD32rr  : I<0x01, MRMDestReg, (outs GR32:$dst), (ins GR32:$src1, GR32:$src2),
                 "add{l} {$src2, $dst|$dst, $src2}",
                 [(set GR32:$dst, (add GR32:$src1, GR32:$src2))]>;

llvm-svn: 40033

llvm-svn: 38501

llvm-svn: 37965

llvm-svn: 37961

llvm-svn: 37931

llvm-svn: 37914

Each ARM use predicate operand is now made up of two components. The new component is the CPSR register.

llvm-svn: 37895

instruction flag, and use the flag along with a virtual member function
hook for targets to override if there are instructions that are only
trivially rematerializable with specific operands (i.e. constant pool
loads).

llvm-svn: 37728

llvm-svn: 37705

llvm-svn: 37659

with a general target hook to identify rematerializable instructions. Some
instructions are only rematerializable with specific operands, such as loads
from constant pools, while others are always rematerializable. This hook
allows both to be identified as being rematerializable with the same
mechanism.

llvm-svn: 37644

llvm-svn: 37643

llvm-svn: 37468

llvm-svn: 37388

llvm-svn: 37381

llvm-svn: 37349

llvm-svn: 37271

llvm-svn: 37269

Mark calls non-predicable for now. Need to ensure it's the last instruction in the if-converted block or make sure it preserve condition code.

llvm-svn: 37199

Make ARM::B isPredicable; Make Bcc and MOVCC condition option a normal operand so they are not predicable.

llvm-svn: 37118

llvm-svn: 37103

llvm-svn: 37066

llvm-svn: 36948

llvm-svn: 36519

llvm-svn: 36518

llvm-svn: 36506

llvm-svn: 36222

flags (ARMISD::CMPNZ) and comparisons that use all flags (ARMISD::CMP).
- Defines the instructions: TST, TEQ (ARM) and TST (Thumb).

llvm-svn: 35573

llvm-svn: 35381

    mov lr, pc
    bx lr
So, the function was not called.

llvm-svn: 35218