rather than individually on behalf of each
ASTContext. This allows the ASTImporter to know
about all containers of types, which will let it
be smarter about forwarding information about
type origins. That means that the following
sequence of steps will be possible (after a few
more changes):
- Import a type from a Module's ASTContext into
an expression parser ASTContext, tracking its
origin information -- this works now.
- Because the result of the expression uses that
type, import it from the expression parser
ASTContext into the Target's scratch AST
context, forwarding the origin information --
this needs to be added.
- For a later expression that uses the result,
import the type from the Target's scratch AST
context, still forwarding origin information
-- this also needs to be added.
- Use the intact origin information to complete
the type as needed -- this works now if the
origin information is present.
To this end, I made the following changes:
- ASTImporter top-level copy functions now
require both a source and a destination AST
context parameter.
- The ASTImporter now knows how to purge
records related to an ASTContext that is
going away.
- The Target now owns and creates the ASTImporter
whenever the main executable changes or (in the
absence of a main executable) on demand.
llvm-svn: 144802
header, create our own in-memory buffer to parse all of the
appropriate headers, and use that to build the module. This isn't
end-to-end testable yet; that's coming next.
llvm-svn: 144797
and code model. This eliminates the need to pass OptLevel flag all over the
place and makes it possible for any codegen pass to use this information.
llvm-svn: 144788
There may be many invokes that share one landing pad, and the previous code
would record the landing pad once for each invoke. Besides the wasted
effort, a pair of volatile loads gets inserted every time the landing pad is
processed. The rest of the code can get optimized away when a landing pad
is processed repeatedly, but the volatile loads remain, resulting in code like:
LBB35_18:
Ltmp483:
ldr r2, [r7, #-72]
ldr r2, [r7, #-68]
ldr r2, [r7, #-72]
ldr r2, [r7, #-68]
ldr r2, [r7, #-72]
ldr r2, [r7, #-68]
ldr r2, [r7, #-72]
ldr r2, [r7, #-68]
ldr r2, [r7, #-72]
ldr r2, [r7, #-68]
ldr r2, [r7, #-72]
ldr r2, [r7, #-68]
ldr r2, [r7, #-72]
ldr r2, [r7, #-68]
ldr r2, [r7, #-72]
ldr r2, [r7, #-68]
ldr r4, [r7, #-72]
ldr r2, [r7, #-68]
llvm-svn: 144787
This same basic code was in the older version of the SjLj exception handling,
but it was removed in the recent revisions to that code. It needs to be there.
llvm-svn: 144782
The EmitBasePointerRecalculation function has 2 problems, one minor and one
fatal. The minor problem is that it inserts the code at the setjmp
instead of in the dispatch block. The fatal problem is that at the point
where this code runs, we don't know whether there will be a base pointer,
so the entire function is a no-op. The base pointer recalculation needs to
be handled as it was before, by inserting a pseudo instruction that gets
expanded late.
Most of the support for the old approach is still here, but it no longer
has any connection to the eh_sjlj_dispatchsetup intrinsic. Clean up the
parts related to the intrinsic and just generate the pseudo instruction
directly.
llvm-svn: 144781
After recent changes we weren't reaping child processes resulting in many
zombie processes.
This was fixed by adding more settings to the ProcessLaunchOptions class
that allow clients to specify a callback function and baton to be notified
when their process dies. If one is not supplied a default callback will be
used that "does the right thing".
Cleaned up a race condition in the ProcessGDBRemote class that would attempt
to monitor when debugserver died.
Added an extra boolean to the process monitor callbacks that indicate if a
process exited or not. If your process exited with a zero exit status and no
signal, both items could be zero.
Modified the process monitor functions to not require a callback function
in order to reap the child process.
llvm-svn: 144780
Chandler Carruth