[vm/assembler] Skip tests on hosts without POPCNT/LZCNT

Change-Id: I49552c67d908d941eb08ab0a5c49cca4c39148bc
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/117920
Reviewed-by: Alexander Aprelev <[email protected]>
Reviewed-by: Ryan Macnak <[email protected]>
Commit-Queue: Aart Bik <[email protected]>

Author: aartbik

runtime/vm/compiler/assembler/assembler_ia32_test.cc

@@ -366,6 +366,9 @@ ASSEMBLER_TEST_GENERATE(Popcnt, assembler) {
 }
 
 ASSEMBLER_TEST_RUN(Popcnt, test) {
+  if (!HostCPUFeatures::popcnt_supported()) {
+    return;
+  }
   typedef int (*PopcntCode)();
   EXPECT_EQ(36, reinterpret_cast<PopcntCode>(test->entry())());
   EXPECT_DISASSEMBLY(
@@ -387,6 +390,9 @@ ASSEMBLER_TEST_GENERATE(Lzcnt, assembler) {
 }
 
 ASSEMBLER_TEST_RUN(Lzcnt, test) {
+  if (!HostCPUFeatures::abm_supported()) {
+    return;
+  }
   typedef int (*LzcntCode)();
   EXPECT_EQ(44, reinterpret_cast<LzcntCode>(test->entry())());
   EXPECT_DISASSEMBLY(

runtime/vm/compiler/assembler/assembler_x64_test.cc

@@ -6,6 +6,7 @@
 #if defined(TARGET_ARCH_X64)
 
 #include "vm/compiler/assembler/assembler.h"
+#include "vm/cpu.h"
 #include "vm/os.h"
 #include "vm/unit_test.h"
 #include "vm/virtual_memory.h"
@@ -626,6 +627,12 @@ ASSEMBLER_TEST_GENERATE(Testb2, assembler) {
 }
 
 ASSEMBLER_TEST_RUN(Testb2, test) {
+  // TODO(ajcbik): split out popcount and lzcnt.
+  if (!HostCPUFeatures::popcnt_supported() ||
+      !HostCPUFeatures::abm_supported()) {
+    return;
+  }
+
   typedef int64_t (*Testb2Code)();
   EXPECT_EQ(42, reinterpret_cast<Testb2Code>(test->entry())());
   EXPECT_DISASSEMBLY(