[wasm] Turn off tests for mips and x87.

The tests require the implementation of Int32PairAdd and Word32PairShl.

R=titzer@chromium.org, v8-mips-ports@googlegroups.com

Review URL: https://codereview.chromium.org/1804913002

Cr-Commit-Position: refs/heads/master@{#34782}

test/cctest/compiler/test-run-machops.cc

@@ -4201,7 +4201,8 @@ int64_t ToInt64(uint32_t low, uint32_t high) {
   return (static_cast<int64_t>(high) << 32) | static_cast<int64_t>(low);
 }
 
-#if V8_TARGET_ARCH_32_BIT
+#if V8_TARGET_ARCH_32_BIT && !V8_TARGET_ARCH_MIPS && !V8_TARGET_ARCH_PPC && \
+    !V8_TARGET_ARCH_X87
 TEST(RunInt32PairAdd) {
   BufferedRawMachineAssemblerTester<int32_t> m(
       MachineType::Int32(), MachineType::Int32(), MachineType::Int32(),

test/cctest/wasm/test-run-wasm-64.cc

@@ -45,7 +45,7 @@
   V(I64Return, true)            \
   V(I64Param, true)             \
   V(I64LoadStore, true)         \
-  V(I64Add, true)               \
+  V(I64Add, !MIPS_OR_X87)       \
   V(I64Sub, false)              \
   V(I64Mul, false)              \
   V(I64DivS, true)              \