[arm64] Updated poison tests for root movement

The root was moved to the beginning of a 4Gb reservation, which
imapacts codegen https://chromium-review.googlesource.com/c/v8/v8/+/1835548

Since the tests are now passing, removed the SKIP on cctests.

Bug: v8:9820, v8:9706
Change-Id: Icb45e5b078c405aee880bd7f1c333d28acb7c271
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1849527Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64242}

test/cctest/cctest.status

@@ -153,11 +153,6 @@
   'test-api/Threading*': [SKIP],
   'test-cpu-profiler/MultipleIsolates': [PASS, SLOW],
   'test-debug/DebugBreakStackTrace': [PASS, SLOW],
-
-  # BUG(v8:9820): Load poisoning tests failing on the ARM64 simulator
-  'test-poison-disasm-arm64/DisasmPoisonMonomorphicLoad': [SKIP],
-  'test-poison-disasm-arm64/DisasmPoisonMonomorphicLoadFloat64': [SKIP],
-  'test-poison-disasm-arm64/DisasmPoisonPolymorphicLoad': [SKIP],
 }],  # 'arch == arm64 and simulator_run'
 
 ##############################################################################

test/cctest/test-poison-disasm-arm64.cc

@@ -51,8 +51,8 @@ TEST(DisasmPoisonMonomorphicLoad) {
       "b.ne",                                              // deopt if different
       "csel " + kPReg + ", xzr, " + kPReg + ", ne",        // update the poison
       "csdb",                                              // spec. barrier
-      "ldursw <<Field:x[0-9]+>>, \\[<<Obj>>, #[0-9]+\\]",  // load the field
-      "and <<Field>>, <<Field>>, " + kPReg,                // apply the poison
+      "ldur w<<Field:[0-9]+>>, \\[<<Obj>>, #[0-9]+\\]",    // load the field
+      "and x<<Field>>, x<<Field>>, " + kPReg,              // apply the poison
   };
 #else
   std::vector<std::string> patterns_array = {
@@ -117,7 +117,7 @@ TEST(DisasmPoisonPolymorphicLoad) {
       // Lcase1:
       "csel " + kPReg + ", xzr, " + kPReg + ", ne",      // update the poison
       "csdb",                                            // spec. barrier
-      "ldursw x<<BSt:[0-9]+>>, \\[<<Obj>>, #[0-9]+\\]",  // load backing store
+      "ldur w<<BSt:[0-9]+>>, \\[<<Obj>>, #[0-9]+\\]",    // load backing store
                                                          // branchful decompress
       "add x<<BSt>>, x26, x<<BSt>>",                     // Add root to ref
       "and x<<BSt>>, x<<BSt>>, " + kPReg,                // apply the poison
@@ -191,10 +191,10 @@ TEST(DisasmPoisonMonomorphicLoadFloat64) {
       "b.ne",                                              // deopt if differ
       "csel " + kPReg + ", xzr, " + kPReg + ", ne",        // update the poison
       "csdb",                                              // spec. barrier
-      "ldursw <<F1:x[0-9]+>>, \\[<<Obj>>, #11\\]",         // load heap number
-      "add <<F1>>, x26, <<F1>>",                           // Decompress ref
-      "and <<F1>>, <<F1>>, " + kPReg,                      // apply the poison
-      "add <<Addr:x[0-9]+>>, <<F1>>, #0x[0-9a-f]+",        // addr. calculation
+      "ldur w<<F1:[0-9]+>>, \\[<<Obj>>, #11\\]",           // load heap number
+      "add x<<F1>>, x26, x<<F1>>",                         // Decompress ref
+      "and x<<F1>>, x<<F1>>, " + kPReg,                    // apply the poison
+      "add <<Addr:x[0-9]+>>, x<<F1>>, #0x[0-9a-f]+",       // addr. calculation
       "and <<Addr>>, <<Addr>>, " + kPReg,                  // apply the poison
       "ldr d[0-9]+, \\[<<Addr>>\\]",                       // load Float64
   };