diff options
Diffstat (limited to 'rts')
| -rw-r--r-- | rts/sm/GCThread.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/rts/sm/GCThread.h b/rts/sm/GCThread.h index c563d95efd..5646eddb51 100644 --- a/rts/sm/GCThread.h +++ b/rts/sm/GCThread.h @@ -209,10 +209,15 @@ extern gc_thread **gc_threads; #define SET_GCT(to) gct = (to) -#if defined(sparc_HOST_ARCH) +#if defined(sparc_HOST_ARCH) || defined(i386_HOST_ARCH) // Don't use REG_base or R1 for gct on SPARC because they're getting clobbered // by something else. Not sure what yet. -- BL 2009/01/03 +// Using __thread is better than stealing a register on x86, because +// we have too few registers available. In my tests it was worth +// about 5% in GC performance, but of course that might change as gcc +// improves. -- SDM 2009/04/03 + extern __thread gc_thread* gct; #define DECLARE_GCT __thread gc_thread* gct; |