Expose SIMD.Float32x4 type to Javascript.

src/ppc/code-stubs-ppc.cc

Index: src/ppc/code-stubs-ppc.cc
diff --git a/src/ppc/code-stubs-ppc.cc b/src/ppc/code-stubs-ppc.cc
index f18477892b7d6ce294e733981c59bb96a2af9f9a..c18f0f7d79365c4ab4c68284c3959191bd6e73cb 100644
--- a/src/ppc/code-stubs-ppc.cc
+++ b/src/ppc/code-stubs-ppc.cc
@@ -266,6 +266,9 @@ static void EmitIdenticalObjectComparison(MacroAssembler* masm, Label* slow,
     // Call runtime on identical symbols since we need to throw a TypeError.
     __ cmpi(r7, Operand(SYMBOL_TYPE));
     __ beq(slow);
+    // Call runtime on identical SIMD values since we must throw a TypeError.
+    __ cmpi(r7, Operand(FLOAT32X4_TYPE));
+    __ beq(slow);
     if (is_strong(strength)) {
       // Call the runtime on anything that is converted in the semantics, since
       // we need to throw a TypeError. Smis have already been ruled out.
@@ -284,6 +287,9 @@ static void EmitIdenticalObjectComparison(MacroAssembler* masm, Label* slow,
       // Call runtime on identical symbols since we need to throw a TypeError.
       __ cmpi(r7, Operand(SYMBOL_TYPE));
       __ beq(slow);
+      // Call runtime on identical SIMD values since we must throw a TypeError.
+      __ cmpi(r7, Operand(FLOAT32X4_TYPE));
+      __ beq(slow);
       if (is_strong(strength)) {
         // Call the runtime on anything that is converted in the semantics,
         // since we need to throw a TypeError. Smis and heap numbers have