[wasm] Add stress test for I64 atomics

This test is modelled after the atomics-stress test but supports 64 bit
operands.

Bug: v8:6532
Change-Id: I313b1ade74a58201b3fa097ba5b1515754a685db
Reviewed-on: https://chromium-review.googlesource.com/c/1234414
Commit-Queue: Stephan Herhut <herhut@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56812}

test/mjsunit/mjsunit.status

@@ -178,6 +178,7 @@
   'wasm/grow-memory': [PASS, SLOW],
   'wasm/unreachable-validation': [PASS, SLOW],
   'wasm/atomics-stress': [PASS, SLOW, ['(arch == arm or arch == arm64) and simulator_run', SKIP]],
+  'wasm/atomics64-stress': [PASS, SLOW, ['(arch == arm or arch == arm64) and simulator_run', SKIP]],
 
   # case-insensitive unicode regexp relies on case mapping provided by ICU.
   'es6/unicode-regexp-ignore-case': [PASS, ['no_i18n == True', FAIL]],
@@ -811,7 +812,9 @@
 
   # These tests already stress d8 by using many workers. No need for extra stress.
   'wasm/compare-exchange-stress': [SKIP],
+  'wasm/compare-exchange64-stress': [SKIP],
   'wasm/atomics-stress': [SKIP],
+  'wasm/atomics64-stress': [SKIP],
 
   # Too slow for verify-csa builds.
   'big-object-literal': [PASS, ['verify_csa == True', SKIP]],

test/mjsunit/wasm/atomics-stress.js

@@ -80,8 +80,10 @@ class Operation {
     constructor(opcode, input, offset) {
         this.opcode = opcode != undefined ? opcode : Operation.nextOpcode();
         this.size = Operation.opcodeToSize(this.opcode);
-        this.input = input != undefined ? input : Operation.inputForSize(this.size);
-        this.offset = offset != undefined ? offset : Operation.offsetForSize(this.size);
+        this.input = input != undefined ? input : Operation.inputForSize(
+            this.size);
+        this.offset = offset != undefined ? offset : Operation.offsetForSize(
+            this.size);
     }
 
     static nextOpcode() {
@@ -280,20 +282,22 @@ function generateFunctionBodyForSequence(sequence) {
     // an int32* we use to count down spinning workers.
     let body = [];
     // Initially, we spin until all workers start running.
-    body.push(
-        // Decrement the wait count.
-        kExprGetLocal, 2,
-        kExprI32Const, 1,
-        kAtomicPrefix, kExprI32AtomicSub, 2, 0,
-        // Spin until zero.
-        kExprLoop, kWasmStmt,
-        kExprGetLocal, 2,
-        kAtomicPrefix, kExprI32AtomicLoad, 2, 0,
-        kExprI32Const, 0,
-        kExprI32GtU,
-        kExprBrIf, 0,
-        kExprEnd
-    );
+    if (!kDebug) {
+        body.push(
+            // Decrement the wait count.
+            kExprGetLocal, 2,
+            kExprI32Const, 1,
+            kAtomicPrefix, kExprI32AtomicSub, 2, 0,
+            // Spin until zero.
+            kExprLoop, kWasmStmt,
+            kExprGetLocal, 2,
+            kAtomicPrefix, kExprI32AtomicLoad, 2, 0,
+            kExprI32Const, 0,
+            kExprI32GtU,
+            kExprBrIf, 0,
+            kExprEnd
+        );
+    }
     for (let operation of sequence) {
         body.push(
             // Pre-load address of results sequence pointer for later.
@@ -451,8 +455,9 @@ function loadSequencesFromStrings(inputs) {
         let parts = input.split(",");
         let sequence = [];
         for (let part of parts) {
-          let parsed = parseRE.exec(part);
-          sequence.push(new Operation(reverseOpcodes[parsed[1]], parsed[3], parsed[2]|0));
+            let parsed = parseRE.exec(part);
+            sequence.push(new Operation(reverseOpcodes[parsed[1]], parsed[3],
+                parsed[2] | 0));
         }
         sequences.push(sequence);
     }
@@ -466,7 +471,7 @@ function loadResultsFromStrings(inputs) {
         let parts = input.split(",");
         let result = [];
         for (let number of parts) {
-            result.push(number|0);
+            result.push(number | 0);
         }
         results.push(result);
     }

test/mjsunit/wasm/wasm-constants.js

@@ -108,6 +108,7 @@ let kSig_l_l = makeSig([kWasmI64], [kWasmI64]);
 let kSig_i_l = makeSig([kWasmI64], [kWasmI32]);
 let kSig_i_ii = makeSig([kWasmI32, kWasmI32], [kWasmI32]);
 let kSig_i_iii = makeSig([kWasmI32, kWasmI32, kWasmI32], [kWasmI32]);
+let kSig_v_iiii = makeSig([kWasmI32, kWasmI32, kWasmI32, kWasmI32], []);
 let kSig_d_dd = makeSig([kWasmF64, kWasmF64], [kWasmF64]);
 let kSig_l_ll = makeSig([kWasmI64, kWasmI64], [kWasmI64]);
 let kSig_i_dd = makeSig([kWasmF64, kWasmF64], [kWasmI32]);
@@ -370,9 +371,9 @@ let kExprI32AtomicXor16U = 0x3d;
 let kExprI32AtomicExchange = 0x41;
 let kExprI32AtomicExchange8U = 0x43;
 let kExprI32AtomicExchange16U = 0x44;
-let kExprI32AtomicCompareExchange = 0x48
-let kExprI32AtomicCompareExchange8U = 0x4a
-let kExprI32AtomicCompareExchange16U = 0x4b
+let kExprI32AtomicCompareExchange = 0x48;
+let kExprI32AtomicCompareExchange8U = 0x4a;
+let kExprI32AtomicCompareExchange16U = 0x4b;
 
 let kExprI64AtomicLoad = 0x11;
 let kExprI64AtomicLoad8U = 0x14;