Implement long negate instruction in the optimizing compiler.

- Add support for the neg-long (long integer two's
  complement negate) instruction in the optimizing compiler.
- Add a 64-bit NEG instruction (negq) to the x86-64
  assembler.
- Generate ARM, x86 and x86-64 code for integer HNeg nodes.
- Put neg-related tests into test/415-optimizing-arith-neg.

Change-Id: I1fbe9611e134408a6b8745d1df20ab6ffa5e50f2

1 files changed, 0 insertions, 34 deletions

diff --git a/test/411-optimizing-arith/src/Main.java b/test/411-optimizing-arith/src/Main.java
index 4de2271..a22c516 100644
--- a/test/411-optimizing-arith/src/Main.java
+++ b/test/411-optimizing-arith/src/Main.java
@@ -74,7 +74,6 @@ public class Main {
 
   public static void main(String[] args) {
     mul();
-    neg();
   }
 
   public static void mul() {
@@ -164,34 +163,6 @@ public class Main {
     expectEquals(Double.POSITIVE_INFINITY, $opt$Mul(Double.NEGATIVE_INFINITY, Double.NEGATIVE_INFINITY));
   }
 
-  public static void neg() {
-    expectEquals(-1, $opt$Neg(1));
-    expectEquals(1, $opt$Neg(-1));
-    expectEquals(0, $opt$Neg(0));
-    expectEquals(51, $opt$Neg(-51));
-    expectEquals(-51, $opt$Neg(51));
-    expectEquals(2147483647, $opt$Neg(-2147483647));  // (2^31 - 1)
-    expectEquals(-2147483647, $opt$Neg(2147483647));  // -(2^31 - 1)
-    // From the Java 7 SE Edition specification:
-    // http://docs.oracle.com/javase/specs/jls/se7/html/jls-15.html#jls-15.15.4
-    //
-    //   For integer values, negation is the same as subtraction from
-    //   zero.  The Java programming language uses two's-complement
-    //   representation for integers, and the range of two's-complement
-    //   values is not symmetric, so negation of the maximum negative
-    //   int or long results in that same maximum negative number.
-    //   Overflow occurs in this case, but no exception is thrown.
-    //   For all integer values x, -x equals (~x)+1.''
-    expectEquals(-2147483648, $opt$Neg(-2147483648)); // -(2^31)
-
-    $opt$InplaceNegOne(1);
-  }
-
-  public static void $opt$InplaceNegOne(int a) {
-    a = -a;
-    expectEquals(-1, a);
-  }
-
   static int $opt$Mul(int a, int b) {
     return a * b;
   }
@@ -207,9 +178,4 @@ public class Main {
   static double $opt$Mul(double a, double b) {
     return a * b;
   }
-
-  static int $opt$Neg(int a){
-    return -a;
-  }
-
 }