MIPS: Fix compilation under clang.

src/mips/lithium-mips.cc

Index: src/mips/lithium-mips.cc
diff --git a/src/mips/lithium-mips.cc b/src/mips/lithium-mips.cc
index 4015bffba3fc6dd9a37506ea09a8d9444d73914e..4a6a1fdc437d538fe7ff204808403b7b8c7d7bce 100644
--- a/src/mips/lithium-mips.cc
+++ b/src/mips/lithium-mips.cc
@@ -1829,12 +1829,11 @@ LInstruction* LChunkBuilder::DoLoadKeyedFastDoubleElement(
 LInstruction* LChunkBuilder::DoLoadKeyedSpecializedArrayElement(
     HLoadKeyedSpecializedArrayElement* instr) {
   ElementsKind elements_kind = instr->elements_kind();
-  Representation representation(instr->representation());
   ASSERT(
-      (representation.IsInteger32() &&
+      (instr->representation().IsInteger32() &&
        (elements_kind != EXTERNAL_FLOAT_ELEMENTS) &&
        (elements_kind != EXTERNAL_DOUBLE_ELEMENTS)) ||
-      (representation.IsDouble() &&
+      (instr->representation().IsDouble() &&
        ((elements_kind == EXTERNAL_FLOAT_ELEMENTS) ||
        (elements_kind == EXTERNAL_DOUBLE_ELEMENTS))));
   ASSERT(instr->key()->representation().IsInteger32() ||
@@ -1897,13 +1896,12 @@ LInstruction* LChunkBuilder::DoStoreKeyedFastDoubleElement(
 
 LInstruction* LChunkBuilder::DoStoreKeyedSpecializedArrayElement(
     HStoreKeyedSpecializedArrayElement* instr) {
-  Representation representation(instr->value()->representation());
   ElementsKind elements_kind = instr->elements_kind();
   ASSERT(
-      (representation.IsInteger32() &&
+      (instr->value()->representation().IsInteger32() &&
        (elements_kind != EXTERNAL_FLOAT_ELEMENTS) &&
        (elements_kind != EXTERNAL_DOUBLE_ELEMENTS)) ||
-      (representation.IsDouble() &&
+      (instr->value()->representation().IsDouble() &&
        ((elements_kind == EXTERNAL_FLOAT_ELEMENTS) ||
        (elements_kind == EXTERNAL_DOUBLE_ELEMENTS))));
   ASSERT(instr->external_pointer()->representation().IsExternal());