Commit Graph

67 Commits

Author SHA1 Message Date
Peter Collingbourne d34d92fb9c irgen: modify the ABI to use init guards instead of priority
The new ABI is simpler for use cases such as dynamically loaded packages.

The calling convention for import functions is similar to what go/ssa would
produce if BareInits were cleared. However, simply clearing this flag causes
two additional issues:

 1) We would need to special case the 'init$guard' variable (see
    discussion in https://codereview.appspot.com/78780043/).

 2) The call to __go_register_gc_roots needs to appear in the right
    place, i.e. after the guard check. Making this check appear
    in the right place with non-bare inits seems unreliable at best.

So we keep BareInits set and generate the necessary code manually.

It is still possible to get the old ABI by specifying a path to a gccgo
installation.

Differential Revision: http://reviews.llvm.org/D6804

llvm-svn: 225030
2014-12-31 00:25:39 +00:00
Peter Collingbourne a0a53085e1 irgen: make it possible to use a custom importer
Differential Revision: http://reviews.llvm.org/D6803

llvm-svn: 225029
2014-12-31 00:25:36 +00:00
Peter Collingbourne 76c1d4e4dd irgen: return a types.Package to the compiler client
Differential Revision: http://reviews.llvm.org/D6802

llvm-svn: 225028
2014-12-31 00:25:35 +00:00
Peter Collingbourne 82a260eaaf irgen: introduce ManglePackagePath function
This is useful for clients that need to use llgo's mangling of the package
path to look up a specific function within a given package.

Differential Revision: http://reviews.llvm.org/D6801

llvm-svn: 225027
2014-12-31 00:25:34 +00:00
Peter Collingbourne 9350942b20 irgen, driver: modify Compiler.Compile to take a FileSet and Files
This change allows clients to generate IR using "files" received from locations
other than the file system. The regular file parser is moved to a new library,
"driver", which is intended to eventually contain much of the logic from
the existing driver.

Differential Revision: http://reviews.llvm.org/D6794

llvm-svn: 225026
2014-12-31 00:25:32 +00:00
Chandler Carruth a5ecd8a9f7 [cmake/multilib] Teach llgo to respect the LLVM_LIBDIR_SUFFIX variable for
multilib build and installs.

Summary:
This requires introducing a generated header to encapsulate the
LLVM_LIBDIR_SUFFIX value from the build system and push it into the go
code. From there, I've adjusted the gllgo code to systematically use
this rather than a raw "lib". This requires some awkwardness as one of
the flags *must* be "lib"-relative for compatibility with how gccgo
works. For that flag, we use ".." to back up a directory and then go
into the proper lib directory.

Differential Revision: http://reviews.llvm.org/D6795

llvm-svn: 224964
2014-12-29 22:57:21 +00:00
Peter Collingbourne b113d0206e irgen: remove unused compiler.runtimetypespkg field.
llvm-svn: 224931
2014-12-29 13:01:28 +00:00
Peter Collingbourne b6edff93ae irgen: do not emit an extra terminator for panic thunks
Found with GoSmith.

Differential Revision: http://reviews.llvm.org/D6714

llvm-svn: 224904
2014-12-28 22:39:01 +00:00
Andrew Wilkins c17d0bbfb3 Test commit
Just changing whitespace to test commit access...

llvm-svn: 224565
2014-12-19 02:45:48 +00:00
Peter Collingbourne 1f89ffdf4d irgen: fix canAvoid*
Patch by Andrew Wilkins!

canAvoidElementLoad and canAvoidLoad were incorrectly
eliding loads when an index expression is used as an
another array index expression. This led to a panic.

See comments on https://github.com/go-llvm/llgo/issues/175

Test Plan: lit test added

Differential Revision: http://reviews.llvm.org/D6676

llvm-svn: 224420
2014-12-17 09:45:05 +00:00
Peter Collingbourne 545e7276a8 Use the object's package to mangle method names, rather than the receiver's package
If we use the receiver's package, we can end up with identical manglings
for different functions. Consider:

package p
type U struct{}
func (U) f()

package q
import "p"
type T struct { p.U }
func (T) f()

The method set of *T has two synthetic methods named (*T).f(); one forwards to
(T).f(), and the other to (U).f(). Previously, we were distinguishing them
by the receiver's package, and in this case because both methods have the
same receiver, they received the same name.

The methods are correctly distinguished by the package owning the identifier
"f", which is available via f.Object().Pkg().

Differential Revision: http://reviews.llvm.org/D6673

llvm-svn: 224357
2014-12-16 20:04:55 +00:00
Peter Collingbourne 8bcc05d5f4 Update to new bindings.
llvm-svn: 224180
2014-12-13 02:26:00 +00:00
Peter Collingbourne c5b84a53f7 Optimize comparisons to empty string.
Geo-mean performance improvement of 0.2% (-0.3% - 0.9% @ 95% CI).

Differential Revision: http://reviews.llvm.org/D6569

llvm-svn: 223728
2014-12-09 01:02:12 +00:00
Peter Collingbourne ac4744ec86 Add .arcconfig file.
llvm-svn: 223689
2014-12-08 20:12:22 +00:00
Peter Collingbourne 19048871b2 Roll gofrontend to 2a85649c19e1.
llvm-svn: 223385
2014-12-04 20:39:58 +00:00
Peter Collingbourne 594c10de22 Initial commit of llgo third_party.
llvm-svn: 222858
2014-11-27 00:12:26 +00:00
Peter Collingbourne ad9841e8ac Initial commit of llgo.
llvm-svn: 222857
2014-11-27 00:06:42 +00:00