8296426: x86: Narrow UseAVX and UseSSE flags

Reviewed-by: vlivanov, kvn

Author: cl4es

src/hotspot/cpu/x86/globals_x86.hpp

@@ -106,13 +106,13 @@ define_pd_global(intx, InitArrayShortSize, 8*BytesPerLong);
   product(bool, UseStoreImmI16, true,                                       \
           "Use store immediate 16-bits value instruction on x86")           \
                                                                             \
-  product(intx, UseSSE, 99,                                                 \
+  product(int, UseSSE, 4,                                                   \
           "Highest supported SSE instructions set on x86/x64")              \
-          range(0, 99)                                                      \
+          range(0, 4)                                                       \
                                                                             \
-  product(intx, UseAVX, 3,                                                  \
+  product(int, UseAVX, 3,                                                   \
           "Highest supported AVX instructions set on x86/x64")              \
-          range(0, 99)                                                      \
+          range(0, 3)                                                       \
                                                                             \
   product(bool, UseKNLSetting, false, DIAGNOSTIC,                           \
           "Control whether Knights platform setting should be used")        \

src/hotspot/cpu/x86/vm_version_x86.cpp

@@ -404,8 +404,8 @@ class VM_Version_StubGenerator: public StubCodeGenerator {
     // Generate SEGV here (reference through NULL)
     // and check upper YMM/ZMM bits after it.
     //
-    intx saved_useavx = UseAVX;
-    intx saved_usesse = UseSSE;
+    int saved_useavx = UseAVX;
+    int saved_usesse = UseSSE;
 
     // If UseAVX is uninitialized or is set by the user to include EVEX
     if (use_evex) {
@@ -900,7 +900,7 @@ void VM_Version::get_processor_features() {
   if (FLAG_IS_DEFAULT(UseSSE)) {
     FLAG_SET_DEFAULT(UseSSE, use_sse_limit);
   } else if (UseSSE > use_sse_limit) {
-    warning("UseSSE=%d is not supported on this CPU, setting it to UseSSE=%d", (int) UseSSE, use_sse_limit);
+    warning("UseSSE=%d is not supported on this CPU, setting it to UseSSE=%d", UseSSE, use_sse_limit);
     FLAG_SET_DEFAULT(UseSSE, use_sse_limit);
   }
 
@@ -930,9 +930,9 @@ void VM_Version::get_processor_features() {
   }
   if (UseAVX > use_avx_limit) {
     if (UseSSE < 4) {
-      warning("UseAVX=%d requires UseSSE=4, setting it to UseAVX=0", (int) UseAVX);
+      warning("UseAVX=%d requires UseSSE=4, setting it to UseAVX=0", UseAVX);
     } else {
-      warning("UseAVX=%d is not supported on this CPU, setting it to UseAVX=%d", (int) UseAVX, use_avx_limit);
+      warning("UseAVX=%d is not supported on this CPU, setting it to UseAVX=%d", UseAVX, use_avx_limit);
     }
     FLAG_SET_DEFAULT(UseAVX, use_avx_limit);
   }
@@ -1860,9 +1860,9 @@ void VM_Version::get_processor_features() {
     log->print_cr("Logical CPUs per core: %u",
                   logical_processors_per_package());
     log->print_cr("L1 data cache line size: %u", L1_data_cache_line_size());
-    log->print("UseSSE=%d", (int) UseSSE);
+    log->print("UseSSE=%d", UseSSE);
     if (UseAVX > 0) {
-      log->print("  UseAVX=%d", (int) UseAVX);
+      log->print("  UseAVX=%d", UseAVX);
     }
     if (UseAES) {
       log->print("  UseAES=1");

src/hotspot/share/jvmci/jvmciCompilerToVMInit.cpp

@@ -232,7 +232,7 @@ JVMCIObjectArray CompilerToVM::initialize_intrinsics(JVMCI_TRAPS) {
   do_uintx_flag(TLABWasteIncrement)                                        \
   do_intx_flag(TypeProfileWidth)                                           \
   do_bool_flag(UseAESIntrinsics)                                           \
-  X86_ONLY(do_intx_flag(UseAVX))                                           \
+  X86_ONLY(do_int_flag(UseAVX))                                           \
   do_bool_flag(UseCRC32Intrinsics)                                         \
   do_bool_flag(UseAdler32Intrinsics)                                       \
   do_bool_flag(UseCompressedClassPointers)                                 \
@@ -252,7 +252,7 @@ JVMCIObjectArray CompilerToVM::initialize_intrinsics(JVMCI_TRAPS) {
   do_bool_flag(UseSHA1Intrinsics)                                          \
   do_bool_flag(UseSHA256Intrinsics)                                        \
   do_bool_flag(UseSHA512Intrinsics)                                        \
-  X86_ONLY(do_intx_flag(UseSSE))                                           \
+  X86_ONLY(do_int_flag(UseSSE))                                           \
   COMPILER2_PRESENT(do_bool_flag(UseSquareToLenIntrinsic))                 \
   do_bool_flag(UseTLAB)                                                    \
   do_bool_flag(VerifyOops)                                                 \

test/hotspot/jtreg/compiler/floatingpoint/NaNTest.java

@@ -82,7 +82,7 @@ public static void main(String args[]) {
         // native methods that use FPU instructions, and those strip the
         // signaling NaNs.
         if (Platform.isX86()) {
-            int sse = WHITE_BOX.getIntxVMFlag("UseSSE").intValue();
+            int sse = WHITE_BOX.getIntVMFlag("UseSSE").intValue();
             expectStableFloats = (sse >= 1);
             expectStableDoubles = (sse >= 2);
         }