Fix up more SSE implementations for nontrapping-fp

Fixes lto2.test_sse1 and test_sse2 with checks similar to

Author: dschuff

system/include/compat/emmintrin.h

@@ -7,6 +7,7 @@
 #ifndef __emscripten_emmintrin_h__
 #define __emscripten_emmintrin_h__
 
+#include <climits>
 #ifndef __SSE2__
 #error "SSE2 instruction set not enabled"
 #endif
@@ -1008,9 +1009,10 @@ static __inline__ long long __attribute__((__always_inline__, __nodebug__))
 _mm_cvtsd_si64(__m128d __a)
 {
   // TODO: optimize
-  if (isnan(__a[0]) || isinf(__a[0])) return 0x8000000000000000LL;
-  long long x = llrint(__a[0]);
-  if (x != 0xFFFFFFFF00000000ULL && (x != 0 || fabs(__a[0]) < 2.f))
+  double e = __a[0];
+  if (isnan(e) || isinf(e)) return 0x8000000000000000LL;
+  long long x = llrint(e);
+  if (x != 0xFFFFFFFF00000000ULL && (x != 0 || fabs(e) < 2.f) && e <= LLONG_MAX && e >= LLONG_MIN)
     return x;
   else
     return 0x8000000000000000LL;

system/include/compat/xmmintrin.h

@@ -596,8 +596,9 @@ _mm_cvtsi32_ss(__m128 __a, int __b)
 
 static __inline__ int __attribute__((__always_inline__, __nodebug__, DIAGNOSE_SLOW)) _mm_cvtss_si32(__m128 __a)
 {
-  int x = lrint(((__f32x4)__a)[0]);
-  if (x != 0 || fabsf(((__f32x4)__a)[0]) < 2.f)
+  float e = ((__f32x4)__a)[0];
+  int x = lrint(e);
+  if ((x != 0 || fabsf(e)) < 2.f && !isnan(e) && e <= (float)INT_MAX && e >= INT_MIN)
     return x;
   else
     return (int)0x80000000;
@@ -627,9 +628,10 @@ _mm_cvtsi64_ss(__m128 __a, long long __b)
 static __inline__ long long __attribute__((__always_inline__, __nodebug__, DIAGNOSE_SLOW))
 _mm_cvtss_si64(__m128 __a)
 {
-  if (isnan(((__f32x4)__a)[0]) || isinf(((__f32x4)__a)[0])) return 0x8000000000000000LL;
-  long long x = llrintf(((__f32x4)__a)[0]);
-  if (x != 0xFFFFFFFF00000000ULL && (x != 0 || fabsf(((__f32x4)__a)[0]) < 2.f))
+  float e = ((__f32x4)__a)[0];
+  if (isnan(e) || isinf(e)) return 0x8000000000000000LL;
+  long long x = llrintf(e);
+  if ((x != 0xFFFFFFFF00000000ULL && (x != 0 || fabsf(e) < 2.f)) && e <= (float)LLONG_MAX && e >= LLONG_MIN)
     return x;
   else
     return 0x8000000000000000LL;