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-rw-r--r--erts/emulator/beam/beam_load.c46
1 files changed, 46 insertions, 0 deletions
diff --git a/erts/emulator/beam/beam_load.c b/erts/emulator/beam/beam_load.c
index 2d57c8a218..e6448931eb 100644
--- a/erts/emulator/beam/beam_load.c
+++ b/erts/emulator/beam/beam_load.c
@@ -2787,6 +2787,52 @@ gen_skip_bits2(LoaderState* stp, GenOpArg Fail, GenOpArg Ms,
return op;
}
+static GenOp*
+gen_increment(LoaderState* stp, GenOpArg Reg, GenOpArg Integer,
+ GenOpArg Live, GenOpArg Dst)
+{
+ GenOp* op;
+
+ NEW_GENOP(stp, op);
+ op->op = genop_i_increment_4;
+ op->arity = 4;
+ op->next = NULL;
+ op->a[0] = Reg;
+ op->a[1].type = TAG_u;
+ op->a[1].val = Integer.val;
+ op->a[2] = Live;
+ op->a[3] = Dst;
+ return op;
+}
+
+static GenOp*
+gen_increment_from_minus(LoaderState* stp, GenOpArg Reg, GenOpArg Integer,
+ GenOpArg Live, GenOpArg Dst)
+{
+ GenOp* op;
+
+ NEW_GENOP(stp, op);
+ op->op = genop_i_increment_4;
+ op->arity = 4;
+ op->next = NULL;
+ op->a[0] = Reg;
+ op->a[1].type = TAG_u;
+ op->a[1].val = -Integer.val;
+ op->a[2] = Live;
+ op->a[3] = Dst;
+ return op;
+}
+
+/*
+ * Test whether the negation of the given number is small.
+ */
+static int
+negation_is_small(LoaderState* stp, GenOpArg Int)
+{
+ return Int.type == TAG_i && IS_SSMALL(-Int.val);
+}
+
+
static int
smp(LoaderState* stp)
{