update a comment

[ghc-hetmet.git] / rts / PrimOps.cmm

diff --git a/rts/PrimOps.cmm b/rts/PrimOps.cmm
index cbdfe67..c7c3727 100644 (file)
--- a/rts/PrimOps.cmm
+++ b/rts/PrimOps.cmm
@@ -452,11 +452,11 @@ int64ToIntegerzh_fast
    hi = TO_W_(val >> 32);
    lo = TO_W_(val);
 
-   if ( hi != 0 && hi != 0xFFFFFFFF )  { 
-       words_needed = 2;
-   } else { 
+   if ( hi == 0 || (hi == 0xFFFFFFFF && lo != 0) )  {
        // minimum is one word
        words_needed = 1;
+   } else { 
+       words_needed = 2;
    }
 
    ALLOC_PRIM( SIZEOF_StgArrWords + WDS(words_needed),
@@ -928,16 +928,20 @@ decodeDoublezu2Intzh_fast
     W_ p;
     FETCH_MP_TEMP(mp_tmp1);
     FETCH_MP_TEMP(mp_tmp2);
-    FETCH_MP_TEMP(mp_tmp_w);
+    FETCH_MP_TEMP(mp_result1);
+    FETCH_MP_TEMP(mp_result2);
 
     /* arguments: D1 = Double# */
     arg = D1;
 
     /* Perform the operation */
-    foreign "C" __decodeDouble_2Int(mp_tmp1 "ptr", mp_tmp2 "ptr", mp_tmp_w "ptr", arg) [];
-    
-    /* returns: (Int# (mant high), Int# (mant low), Int# (expn)) */
-    RET_NNN(W_[mp_tmp1], W_[mp_tmp2], W_[mp_tmp_w]);
+    foreign "C" __decodeDouble_2Int(mp_tmp1 "ptr", mp_tmp2 "ptr",
+                                    mp_result1 "ptr", mp_result2 "ptr",
+                                    arg) [];
+
+    /* returns:
+       (Int# (mant sign), Word# (mant high), Word# (mant low), Int# (expn)) */
+    RET_NNNN(W_[mp_tmp1], W_[mp_tmp2], W_[mp_result1], W_[mp_result2]);
 }
 
 /* -----------------------------------------------------------------------------
@@ -2118,7 +2122,11 @@ delayzh_fast
     W_ time;
     W_ divisor;
     (time) = foreign "C" getourtimeofday() [R1];
-    divisor = TO_W_(RtsFlags_MiscFlags_tickInterval(RtsFlags))*1000;
+    divisor = TO_W_(RtsFlags_MiscFlags_tickInterval(RtsFlags));
+    if (divisor == 0) {
+        divisor = 50;
+    }
+    divisor = divisor * 1000;
     target = ((R1 + divisor - 1) / divisor) /* divide rounding up */
            + time + 1; /* Add 1 as getourtimeofday rounds down */
     StgTSO_block_info(CurrentTSO) = target;