Disable some IR rules for Power8.

Author: TheRealMDoerr

test/hotspot/jtreg/compiler/c2/irTests/TestAutoVectorization2DArray.java

@@ -30,8 +30,9 @@
  * @bug 8279258
  * @summary Auto-vectorization enhancement for two-dimensional array operations
  * @requires ((os.arch == "x86" | os.arch == "i386") & (vm.opt.UseSSE == "null" | vm.opt.UseSSE >= 2))
- *           | (os.arch != "x86" & os.arch != "i386" & os.arch != "riscv64")
+ *           | (os.arch != "x86" & os.arch != "i386" & os.arch != "riscv64" & os.arch != "ppc64" & os.arch != "ppc64le")
  *           | (os.arch == "riscv64" & vm.cpu.features ~= ".*rvv.*")
+ *           | ((os.arch == "ppc64" | os.arch == "ppc64le") & vm.cpu.features ~= ".*darn.*")
  * @library /test/lib /
  * @run driver compiler.c2.irTests.TestAutoVectorization2DArray
  */

test/hotspot/jtreg/compiler/loopopts/superword/MinMaxRed_Int.java

@@ -97,6 +97,7 @@ public static void ReductionInit(int[] a, int[] b) {
         applyIfCPUFeature = {"rvv", "true"},
         counts = {IRNode.MIN_REDUCTION_V, " > 0"})
     @IR(applyIfPlatform = {"ppc", "true"},
+        applyIf = {"SuperwordUseVSX", "true"},
         counts = {IRNode.MIN_REDUCTION_V, " > 0"})
     public static int minReductionImplement(int[] a, int[] b, int res) {
         for (int i = 0; i < a.length; i++) {
@@ -113,6 +114,7 @@ public static int minReductionImplement(int[] a, int[] b, int res) {
         applyIfCPUFeature = {"rvv", "true"},
         counts = {IRNode.MAX_REDUCTION_V, " > 0"})
     @IR(applyIfPlatform = {"ppc", "true"},
+        applyIf = {"SuperwordUseVSX", "true"},
         counts = {IRNode.MAX_REDUCTION_V, " > 0"})
     public static int maxReductionImplement(int[] a, int[] b, int res) {
         for (int i = 0; i < a.length; i++) {