llvm-svn: 59046

to be sign-extended when it is promoted to 64 bits for intermediate
offset calculations. The offset calculations are done as uint64_t so that
overflow conditions are well defined.

This fixes a problem which is currently hidden by the x86 AsmPrinter but
which was exposed by r58917 (which is temporarily reverted).  See PR3027
for details.

llvm-svn: 59044

llvm-svn: 59043

llvm-svn: 59042

llvm-svn: 59039

 - Emits an unconditional branch, with extra logic to avoid generating
   spurious branches out of dummy blocks.

llvm-svn: 59037

llvm-svn: 59036

The CC was changed, but wasn't checked to see if it was legal if the DAG
combiner was being run after legalization. Threw in a couple of checks just to
make sure that it's okay. As far as the PR is concerned, no back-end target
actually exhibited this problem, so there isn't an associated testcase.

llvm-svn: 59035

the size of the -O0 output on some cases.  For example, on expr.c from
176.gcc, it shrinks the .ll file from 43164 to 42835 lines, and removed
references to two external symbols.

llvm-svn: 59034

condition is a constant.  This shrinks -O0 codegen by quite a bit
on some cases.

llvm-svn: 59033

llvm-svn: 59032

llvm-svn: 59031

Don't free AST consumer when --disable-free is set.

llvm-svn: 59030

llvm-svn: 59029

llvm-svn: 59028

llvm-svn: 59027

llvm-svn: 59026

llvm-svn: 59025

llvm-svn: 59024

llvm-svn: 59023

"dummy" blocks (blocks just used to make sure we have a place to dump
code to).

llvm-svn: 59022

 - Was confusing and only used in one small part of the code.

llvm-svn: 59020

llvm-svn: 59019

backend.

llvm-svn: 59018

 - No functionality change.

llvm-svn: 59017

llvm-svn: 59016

llvm-svn: 59015

llvm-svn: 59014

llvm-svn: 59013

llvm-svn: 59012

llvm-svn: 59011

llvm-svn: 59010

llvm-svn: 59009

llvm-svn: 59008

llvm-svn: 59007

llvm-svn: 59006

`clean' makefile target removes add-hoc directory created for building
the native tablegen.

llvm-svn: 59005

llvm-svn: 59004

Comparing stages 2 and 3
warning: ./cc1-checksum.o differs
warning: ./cc1obj-checksum.o differs
warning: ./cc1objplus-checksum.o differs
warning: ./cc1plus-checksum.o differs
Bootstrap comparison failure!
./alias.o differs
./alloc-pool.o differs
./attribs.o differs
./bb-reorder.o differs
./bitmap.o differs
./build/errors.o differs
./build/genattrtab.o differs
./build/genautomata.o differs
./build/genemit.o differs
./build/genextract.o differs
...

-bw

llvm-svn: 59003

  basic blocks.
- Minor code clean-up.

llvm-svn: 59002