SDNode for LDRB_POST_IMM is invalid: number of registers added to SDNode fewer
that described in .td.

7 ops is needed, but SDNode with only 6 is created.

In more details:
In ARMInstrInfo.td, in multiclass AI2_ldridx, in definition _POST_IMM, offset
operand is defined as am2offset_imm. am2offset_imm is complex parameter type,
and actually it consists from dummy register and imm itself. As I understood
trick with dummy reg was made for AsmParser. In ARMISelLowering.cpp, this dummy
register was not added to SDNode, and it cause crash in Peephole Optimizer pass.

The problem fixed by setting up additional dummy reg when emitting
LDRB_POST_IMM instruction.

llvm-svn: 165617

SchedulerDAGInstrs::buildSchedGraph ignores dependencies between FixedStack
objects and byval parameters. So loading byval parameters from stack may be
inserted *before* it will be stored, since these operations are treated as
independent.

Fix:
Currently ARMTargetLowering::LowerFormalArguments saves byval registers with
FixedStack MachinePointerInfo. To fix the problem we need to store byval
registers with MachinePointerInfo referenced to first the "byval" parameter.

Also commit adds two new fields to the InputArg structure: Function's argument
index and InputArg's part offset in bytes relative to the start position of
Function's argument. E.g.: If function's argument is 128 bit width and it was
splitted onto 32 bit regs, then we got 4 InputArg structs with same arg index,
but different offset values. 

llvm-svn: 165616

llvm-svn: 165613

namespace. Use the attribute's enum value instead. No functionality change
intended.

llvm-svn: 165610

checkRegMaskInterference only initializes the bitmask on the first interference.

This fixes PR14027 and (re)fixes PR13945.

llvm-svn: 165608

enums. These are then created via the correct Attributes creation method.

llvm-svn: 165607

llvm-svn: 165606

llvm-svn: 165605

Consistently evaluate Aliases and Sequences recursively.

llvm-svn: 165604

Allows the new machine model to be used for NumMicroOps and OutputLatency.

Allows the HazardRecognizer to be disabled along with itineraries.

llvm-svn: 165603

llvm-svn: 165602

llvm-svn: 165601

llvm-svn: 165599

Have 'addFnAttr' take the attribute enum value. Then have it build the attribute object and add it appropriately. No functionality change.

llvm-svn: 165595

llvm-svn: 165594

llvm-svn: 165590

Patch committed on behalf of Kirill Uhanov

llvm-svn: 165589

llvm-svn: 165588

This patch adds new functions to the SectionRef and ObjectFile interfaces to determine whether or not a section is meant to be read-only.  These functions will be used by the MCJIT RuntimeDyld to give hints to the memory manager during the object loading process in a future patch.

Patch by Ashok Thirumurthi.

llvm-svn: 165586

Patch by Sasa Stankovic. 

llvm-svn: 165585

This reverts commit 165428 in an attempt to get our buildbots going.

llvm-svn: 165574

llvm-svn: 165569

llvm-svn: 165568

llvm-svn: 165566

llvm-svn: 165565

misched: Allow flags to disable hasInstrSchedModel/hasInstrItineraries for external users of TargetSchedule.

llvm-svn: 165564

This wasn't contributing anything significant to postRA heuristics except compile time (by my measurements) and will be replaced by a more general heuristic for cross-region dependencies within the scheduler itself.

llvm-svn: 165563

Use the attribute builder to add attributes to call/invoke instruction. No functionality change intended.

llvm-svn: 165562

This patch provides initial implementation of load address 
macro instruction for Mips. We have implemented two kinds 
of expansions with their variations depending on the size 
of immediate operand:

 1) load address with immediate value directly:
    * la d,j => addiu d,$zero,j   (for -32768 <= j <= 65535)
    * la d,j => lui d,hi16(j)
                ori d,d,lo16(j)   (for any other 32 bit value of j)

 2) load load address with register offset value
    * la d,j(s) => addiu d,s,j     (for -32768 <= j <= 65535)
    * la d,j(s) => lui d,hi16(j)   (for any other 32 bit value of j)
                   ori d,d,lo16(j)
                   addu d,d,s

This patch does not cover the case when the address is loaded 
from the value of the label or function.

Contributer: Vladimir Medic
llvm-svn: 165561

llvm-svn: 165559

llvm-svn: 165554

llvm-svn: 165551

llvm-svn: 165550

llvm-svn: 165548

llvm-svn: 165547

llvm-svn: 165544

llvm-svn: 165543

This keeps it out of the main flow of TableGenMain.

llvm-svn: 165542

llvm-svn: 165541

llvm-svn: 165540