llvm-svn: 49167

- Eliminate an implicit_def when it's being spilled.

llvm-svn: 49166

- Be (slightly) smarter about where to place the copies.

llvm-svn: 49165

There is no point in creating a long live range defined by an implicit_def. Scheduler now duplicates implicit_def instruction for each of its uses. Therefore, if an implicit_def node has multiple uses, it will become a number of very short live ranges, rather than a long one. This will make coalescer's job easier.

llvm-svn: 49164

This method allows one to create a directory, and optionally create all parent
directories that do not exist.

The original implementation would require that *all* directories along a path
are writable by the user, including directories that already exist. For example,
suppose we wanted to create the directory "/tmp/foo/bar", and the directory
"/tmp" already exists, but not "/tmp/foo". Since "/tmp" is writable by all
users, the original implementation would work, and create "/tmp/foo", followed
by "/tmp/bar".

A problem occurred, however if one wanted to created the directory
"/Users/myuser/bar" (or equivalently "/home/myuser/bar"), and "/Users/myuser"
already existed and is writable by the current user. The directory
"/User/myuser" is writable by the user, but "/User" is not. The original
implementation of createDirectoryOnDisk would return with failure since "/User"
is not writable, even though "/User/mysuser" is writable.

The new implementation works by recursively creating parents as needed, and thus
doesn't need to check the permissions on every directory in a path.

llvm-svn: 49162

llvm-svn: 49161

llvm-svn: 49160

llvm-svn: 49158

Fix x86-64 encoding bug. REX prefix must always follow 0x0F prefix. For example, extractps in 64bit mode: 66 REX 0F 3A 17, not 66 0F 3A REX 17.

llvm-svn: 49157

llvm-svn: 49156

llvm-svn: 49155

llvm-svn: 49152

a piece with a SourceLocation that does not have a FileID.

llvm-svn: 49151

issues.

llvm-svn: 49150

llvm-svn: 49149

llvm-svn: 49148

elements in table so that sorttable can sort them.

llvm-svn: 49145

by Lauro Venancio!

llvm-svn: 49144

llvm-svn: 49142

can be tested on derived classes.

llvm-svn: 49141

llvm-svn: 49139

the LHS for null twice.

llvm-svn: 49138

llvm-svn: 49137

llvm-svn: 49136

llvm-svn: 49135

BFS path to the root.  This also avoids problems with loops in the ExplodedGraph.

llvm-svn: 49133

the graph.

llvm-svn: 49132

llvm-svn: 49129

llvm-svn: 49128

"BugReporter" and "BugDescription".  BugDescription is used to describe
a bug and provide pieces of the PathDiagnostic, and BugReporter creates
the actual PathDiagnostic by crawling through the ExplodedGraph.

Migrated checks done by GRSimpleVals to be reported using the new BugReporter
mechanism.

llvm-svn: 49127

double includes.

llvm-svn: 49126

llvm-svn: 49124

CodeGenDAGPatterns, where it can be used in other tablegen backends.
This allows the inference to be done for DAGISelEmitter so that it
gets accurate mayLoad/mayStore/isSimpleLoad flags. 

This brings MemOperand functionality back to where it was before
48329. However, it doesn't solve the problem of anonymous patterns
which expand to code that does loads or stores.

llvm-svn: 49123

it causes compile errors.

llvm-svn: 49122

llvm-svn: 49121

llvm-svn: 49120

llvm-svn: 49119

llvm-svn: 49117

llvm-svn: 49116

llvm-svn: 49115