Fold I2L with ICONST_n when beneficial

ICONST_0; I2L -> LCONST_0 ICONST_1; I2L -> LCONST_1
2017-07-07 13:45:55 +03:00
parent ad80c3cd7f
commit aa7db727ba
5 changed files with 19 additions and 4 deletions
@@ -65,6 +65,19 @@ class StackPeepholeOptimizationsTransformer : MethodTransformer() {
                    }
                }

+                Opcodes.I2L -> {
+                    when (prevNonNop.opcode) {
+                        Opcodes.ICONST_0 -> actions.add {
+                            it.remove(insn)
+                            it.set(prevNonNop, InsnNode(Opcodes.LCONST_0))
+                        }
+                        Opcodes.ICONST_1 -> actions.add {
+                            it.remove(insn)
+                            it.set(prevNonNop, InsnNode(Opcodes.LCONST_1))
+                        }
+                    }
+                }
+
                Opcodes.POP2 -> {
                    if (prevNonNop.isEliminatedByPop2()) {
                        actions.add {