[simd] Disable Simd Scalar lowering for x64, enable tests for all other architectures.

test/cctest/BUILD.gn

Index: test/cctest/BUILD.gn
diff --git a/test/cctest/BUILD.gn b/test/cctest/BUILD.gn
index 9f960ec876ef54d1814af0042b3b2b11f77c7818..c036f942b0dca00e1421ca4ef3bd7613f227f4f0 100644
--- a/test/cctest/BUILD.gn
+++ b/test/cctest/BUILD.gn
@@ -206,6 +206,7 @@ v8_executable("cctest") {
       "test-disasm-arm.cc",
       "test-macro-assembler-arm.cc",
       "test-run-wasm-relocation-arm.cc",
+      "wasm/test-run-wasm-simd-lowering.cc",
     ]
   } else if (v8_current_cpu == "arm64") {
     sources += [  ### gcmole(arch:arm64) ###
@@ -220,6 +221,7 @@ v8_executable("cctest") {
       "test-run-wasm-relocation-arm64.cc",
       "test-utils-arm64.cc",
       "test-utils-arm64.h",
+      "wasm/test-run-wasm-simd-lowering.cc",
     ]
   } else if (v8_current_cpu == "x86") {
     sources += [  ### gcmole(arch:ia32) ###
@@ -231,6 +233,7 @@ v8_executable("cctest") {
       "test-log-stack-tracer.cc",
       "test-macro-assembler-ia32.cc",
       "test-run-wasm-relocation-ia32.cc",
+      "wasm/test-run-wasm-simd-lowering.cc",
     ]
   } else if (v8_current_cpu == "mips") {
     sources += [  ### gcmole(arch:mips) ###
@@ -240,6 +243,7 @@ v8_executable("cctest") {
       "test-code-stubs.h",
       "test-disasm-mips.cc",
       "test-macro-assembler-mips.cc",
+      "wasm/test-run-wasm-simd-lowering.cc",
     ]
   } else if (v8_current_cpu == "mipsel") {
     sources += [  ### gcmole(arch:mipsel) ###
@@ -249,6 +253,7 @@ v8_executable("cctest") {
       "test-code-stubs.h",
       "test-disasm-mips.cc",
       "test-macro-assembler-mips.cc",
+      "wasm/test-run-wasm-simd-lowering.cc",
     ]
   } else if (v8_current_cpu == "mips64") {
     sources += [  ### gcmole(arch:mips64) ###
@@ -258,6 +263,7 @@ v8_executable("cctest") {
       "test-code-stubs.h",
       "test-disasm-mips64.cc",
       "test-macro-assembler-mips64.cc",
+      "wasm/test-run-wasm-simd-lowering.cc",
     ]
   } else if (v8_current_cpu == "mips64el") {
     sources += [  ### gcmole(arch:mips64el) ###
@@ -267,6 +273,7 @@ v8_executable("cctest") {
       "test-code-stubs.h",
       "test-disasm-mips64.cc",
       "test-macro-assembler-mips64.cc",
+      "wasm/test-run-wasm-simd-lowering.cc",
     ]
   } else if (v8_current_cpu == "x64") {
     sources += [  ### gcmole(arch:x64) ###
@@ -278,7 +285,6 @@ v8_executable("cctest") {
       "test-log-stack-tracer.cc",
       "test-macro-assembler-x64.cc",
       "test-run-wasm-relocation-x64.cc",
-      "wasm/test-run-wasm-simd-lowering.cc",
       "wasm/test-run-wasm-simd.cc",
     ]
   } else if (v8_current_cpu == "x87") {
@@ -291,6 +297,7 @@ v8_executable("cctest") {
       "test-log-stack-tracer.cc",
       "test-macro-assembler-x87.cc",
       "test-run-wasm-relocation-x87.cc",
+      "wasm/test-run-wasm-simd-lowering.cc",
     ]
   } else if (v8_current_cpu == "ppc" || v8_current_cpu == "ppc64") {
     sources += [  ### gcmole(arch:ppc) ###
@@ -298,6 +305,7 @@ v8_executable("cctest") {
       "test-code-stubs.cc",
       "test-code-stubs.h",
       "test-disasm-ppc.cc",
+      "wasm/test-run-wasm-simd-lowering.cc",
     ]
   } else if (v8_current_cpu == "s390" || v8_current_cpu == "s390x") {
     sources += [  ### gcmole(arch:s390) ###
@@ -305,6 +313,7 @@ v8_executable("cctest") {
       "test-code-stubs.cc",
       "test-code-stubs.h",
       "test-disasm-s390.cc",
+      "wasm/test-run-wasm-simd-lowering.cc",
     ]
   }