[llgo] Roll gofrontend forward

Switch gofrontend to using go.googlesource.com, and
update to 81eb6a3f425b2158c67ee32c0cc973a72ce9d6be.

There are various changes required to update to the
go 1.5 runtime:

typemap.go is changed to accommodate the change in representation for equal/hash algorithms, and the removal of the zero value/type.
CMakeLists.txt is updated to add the build tree to the package search path, so internal packages, which are not installed, are found.
various files changes due to removal of __go_new_nopointers; the same change as in D11863, but with NoUnwindAttribute added to the added runtime functions which are called with "callOnly".
minor cleanups in ssa.go while investigating issues with unwinding/panic handling.

Differential Revisision: http://reviews.llvm.org/D15188

llvm-svn: 263536

1 files changed, 4 insertions, 4 deletions

diff --git a/llgo/third_party/gofrontend/libgo/runtime/go-now.c b/llgo/third_party/gofrontend/libgo/runtime/go-now.c
index ea8d070e9f3..d24e6ee76af 100644
--- a/llgo/third_party/gofrontend/libgo/runtime/go-now.c
+++ b/llgo/third_party/gofrontend/libgo/runtime/go-now.c
@@ -13,11 +13,11 @@
 struct time_now_ret
 now()
 {
-  struct timeval tv;
+  struct timespec ts;
   struct time_now_ret ret;
 
-  gettimeofday (&tv, NULL);
-  ret.sec = tv.tv_sec;
-  ret.nsec = tv.tv_usec * 1000;
+  clock_gettime (CLOCK_REALTIME, &ts);
+  ret.sec = ts.tv_sec;
+  ret.nsec = ts.tv_nsec;
   return ret;
 }