fixup! Fuse multiplication with addition

erlang · Aug 14, 2023 · b78544f · b78544f
1 parent 2ffb85e
commit b78544f
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/erts/emulator/beam/jit/x86/instr_arith.cpp b/erts/emulator/beam/jit/x86/instr_arith.cpp
@@ -1015,6 +1015,7 @@ void BeamModuleAssembler::emit_i_mul_add(const ArgLabel &Fail,
         is_product_small && is_sum_small) {
         x86::Mem p;
         Sint increment = Src4.as<ArgSmall>().get();
+        increment -= factor * _TAG_IMMED1_SMALL;
 
         switch (factor) {
         case 2:
@@ -1040,7 +1041,6 @@ void BeamModuleAssembler::emit_i_mul_add(const ArgLabel &Fail,
         if (Support::isInt32(increment) && p.hasIndex()) {
             comment("optimizing multiplication and addition using LEA");
             mov_arg(RET, Src1);
-            a.and_(RET, imm(~_TAG_IMMED1_MASK));
             a.lea(RET, p);
             mov_arg(Dst, RET);
             return;