[turbofan] Slightly improve truncations for CheckBounds.

src/compiler/types.h

Index: src/compiler/types.h
diff --git a/src/compiler/types.h b/src/compiler/types.h
index 9e55a0bc88ca432f8f10d3c7ac19b3b3ea0d2530..df9a828d031e9200b199a0968994ea2e8a0d48c8 100644
--- a/src/compiler/types.h
+++ b/src/compiler/types.h
@@ -139,7 +139,8 @@ namespace compiler {
   V(Unsigned32OrMinusZero,        kUnsigned32 | kMinusZero) \
   V(Unsigned32OrMinusZeroOrNaN,   kUnsigned32 | kMinusZero | kNaN) \
   V(Integral32,                   kSigned32 | kUnsigned32) \
-  V(Integral32OrMinusZeroOrNaN,   kIntegral32 | kMinusZero | kNaN) \
+  V(Integral32OrMinusZero,        kIntegral32 | kMinusZero) \
+  V(Integral32OrMinusZeroOrNaN,   kIntegral32OrMinusZero | kNaN) \
   V(PlainNumber,                  kIntegral32 | kOtherNumber) \
   V(OrderedNumber,                kPlainNumber | kMinusZero) \
   V(MinusZeroOrNaN,               kMinusZero | kNaN) \