Patch by Matthijs Kooijman!

llvm-svn: 51083

bug as well as a missed optimization.  We weren't properly checking for local
dependencies before moving on to non-local ones when doing non-local read-only 
call CSE.

llvm-svn: 51082

llvm-svn: 51081

llvm-svn: 51080

llvm-svn: 51079

Do not rely on std::swap<Use>, provide a (faster) member function instead.
This change is primarily necessitated by MSVC++'s incompatibility with
declaring std::swap<Use> to be a friend of Use.

Also contains some minor tweaks to Use inline functions,
to undo pointless changes that sneaked in with the last merge.

llvm-svn: 51078

llvm-svn: 51077

llvm-svn: 51075

llvm-svn: 51070

instruction.  This fixes some Ada miscompiles reported in PR2324.

llvm-svn: 51069

llvm-svn: 51068

llvm-svn: 51067

llvm-svn: 51065

llvm-svn: 51063

llvm-svn: 51062

- Incorporate Chris' comment suggestion.

llvm-svn: 51061

llvm-svn: 51060

working with struct field or array element values. Thanks Duncan!

llvm-svn: 51059

llvm-svn: 51057

llvm-svn: 51056

llvm-svn: 51055

- Correct a pasto.

llvm-svn: 51054

llvm-svn: 51048

llvm-svn: 51042

llvm-svn: 51035

A brief description about PIC16:
===============================
PIC16 is an 8-bit microcontroller with only one 8-bit register which is the 
accumulator. All arithmetic/load/store operations are 8-bit only.
The architecture has two address spaces: program and data. The program memory 
is divided into 2K pages and the data memory is divided into banks of 128 byte, with only 80 usable bytes, resulting in an non-contiguous data memory. 

It supports direct data memory access (by specifying the address as part of the instruction) and indirect data and program memory access (in an unorthodox fashion which utilize a 16 bit pointer register). 

Two classes of registers exist: (8-bit class which is only one
accumulator) (16-bit class, which contains one or more 16 bit
pointer(s))

llvm-svn: 51027

Instead of a vector load, shuffle and then extract an element. Load the element from address with an offset.
        pshufd $1, (%rdi), %xmm0
        movd %xmm0, %eax
=>
        movl 4(%rdi), %eax

llvm-svn: 51026

llvm-svn: 51025

llvm-svn: 51024

llvm-svn: 51023

address of the PassInfo directly instead of calling getPassInfo.
This eliminates a bunch of dynamic initializations of static data.

Also, fold RegisterPassBase into PassInfo, make a bunch of its
data members const, and rearrange some code to initialize data
members in constructors instead of using setter member functions.

llvm-svn: 51022

llvm-svn: 51021

llvm-svn: 51020

llvm-svn: 51019

several things that were neither in an anonymous namespace nor static
but not intended to be global.

llvm-svn: 51017

llvm-svn: 51014

llvm-svn: 51013

llvm-svn: 51012

llvm-svn: 51011

Teach X86 a few more vsetcc patterns.  Custom lowering for unsupported ones is next.

llvm-svn: 51009