Make the assignment operator for SmallPtrSet return a reference, and fix a long-standing bug in the copy
ctor while I'm at it.

Thanks to Chris Lattner for help with this patch.

llvm-svn: 38470

Patch by Chis Lattner.

llvm-svn: 38467

llvm-svn: 38460

Almost all occurrences of "bytecode" in the sources have been eliminated.

llvm-svn: 37913

llvm-svn: 37829

llvm-svn: 37697

 1. Make SmallPtrSet::erase faster in the small case by replacing a memmove
    with a pointer copy.
 2. Fix a bug where the null terminator at the end of the array in the small
    case was not copied

llvm-svn: 37696

llvm-svn: 37532

for a target-dependent default with a command-line override; this way
should be generally usable.

llvm-svn: 37285

can't use getZExtValue() to extract the low order bits for each digit.
Instead, we need to access the low order word directly.

llvm-svn: 37242

llvm-svn: 37175

undefined behavior when the width > 64 bits.

llvm-svn: 37153

not being generated correctly because the shl operator does not mutate its
object but returns a new value. Also, make the distinction between radix
16 and the others more clear.

llvm-svn: 37111

llvm-svn: 37026

types:
1. Functions to compute div/rem at the same time.
2. Further assurance that an APInt with 0 bitwidth cannot be constructed.
3. Left and right rotate operations.
4. An exactLogBase2 function which requires an exact power of two or it
   returns -1.

llvm-svn: 37025

shift amount is 0. Previously this code would do a lshr by the bit width
which can lead to incorrect results.

llvm-svn: 37010

llvm-svn: 36981

llvm-svn: 36901

llvm-svn: 36899

the future (and integrate it with membuffer, etc)

llvm-svn: 36876

llvm-svn: 36875

llvm-svn: 36871

llvm-svn: 36870

file instead of aborting.

llvm-svn: 36858

a bug in GraphWriter.cpp.

Patch by Florian Brandner

llvm-svn: 36684

llvm-svn: 36680

llvm-svn: 36561

llvm-svn: 36559

llvm-svn: 36553

llvm-svn: 36475

llvm-svn: 36016

llvm-svn: 35977

represent a string in binary form by an APInt.

llvm-svn: 35968

llvm-svn: 35960

handlers (like the pass list).  My previous fix only supported *new* command
line options, not additions to old ones.

This fixes test/Feature/load_module.ll

llvm-svn: 35935

llvm-svn: 35905

llvm-svn: 35901

Change uses of sys::Path class to sys::PathWithStatus in those places where
the file status information is needed.

llvm-svn: 35743

llvm-svn: 35733

This fixes llvm-ar.

llvm-svn: 35727