Implement constant folding in the IR backend for JVM

The newly added pass folds the set of constant functions of the
current backend, plus IrBuiltIns.

compiler/testData/codegen/bytecodeText/constants/byte.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: JVM_IR
 val a: Byte = 1 + 10
 
 // 1 BIPUSH 11

compiler/testData/codegen/bytecodeText/constants/comparisonFalse.kt

@@ -0,0 +1,22 @@
+// TARGET_BACKEND: JVM_IR
+
+fun foo(): Array<Boolean> {
+    return arrayOf(
+        0.0 / 0 == 0.0 / 0,
+        0.0F > -0.0F,
+        0.0.equals(-0.0),
+        (0.0 / 0.0).equals(1.0 / 0.0)
+    )
+}
+
+// Disabled: current backend doesn't fold them.
+// 4 INVOKESTATIC
+// 4 INVOKESTATIC java/lang/Boolean.valueOf
+// 1 ICONST_1
+// 5 ICONST_0
+// 0 IFEQ
+// 0 IFNE
+// 0 IFGE
+// 0 IFGT
+// 0 IFLE
+// 0 IFLT

compiler/testData/codegen/bytecodeText/constants/comparisonTrue.kt

@@ -0,0 +1,29 @@
+// TARGET_BACKEND: JVM_IR
+
+fun foo(): Array<Boolean> {
+    return arrayOf(
+        19 < 20.0,
+        12 > 11,
+        3.0F <= 4.0,
+        4.0F >= 4,
+        0.0 / 0 != 0.0 / 0,
+        0.0 == -0.0,
+        123 == 123,
+        123L == 123L,
+        0.0F == -0.0F,
+        0.0.compareTo(-0.0) > 0,
+        (0.0 / 0.0).compareTo(1.0 / 0.0) > 0
+    )
+}
+
+// Disabled because the current backend doesn't fold them.
+// 11 INVOKESTATIC
+// 11 INVOKESTATIC java/lang/Boolean.valueOf
+// 1 ICONST_0
+// 12 ICONST_1
+// 0 IFEQ
+// 0 IFNE
+// 0 IFGE
+// 0 IFGT
+// 0 IFLE
+// 0 IFLT

compiler/testData/codegen/bytecodeText/constants/floatingPoints.kt

@@ -0,0 +1,16 @@
+val a = 1.0 + 10
+val b = 2 + 10.0
+val c = 3.0F + 10
+val d = 4 + 10.0F
+val e = 1.0 / 0
+val f = 1 / 0.0
+val g = 0.0 / 0
+val h = 0 / 0.0
+val i = 0.0 / 0.0
+
+// 1 LDC 11.0
+// 1 LDC 12.0
+// 1 LDC 13.0
+// 1 LDC 14.0
+// 2 LDC Infinity
+// 3 LDC NaN

compiler/testData/codegen/bytecodeText/constants/partialString.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: JVM_IR
 fun box(): String {
     val z = 1;
     return "O" + "K".toString() + z

compiler/testData/codegen/bytecodeText/constants/short.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: JVM_IR
 val a: Short = 1 + 255
 
 // 1 SIPUSH 256

compiler/testData/codegen/bytecodeText/constants/string.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: JVM_IR
 fun box(): String {
     return "O" + "K".toString() + 1.toLong()
 }