[Atomics] Remove support for atomic accesses on floating-point values.

test/mjsunit/asm/atomics-load.js

Index: test/mjsunit/asm/atomics-load.js
diff --git a/test/mjsunit/asm/atomics-load.js b/test/mjsunit/asm/atomics-load.js
index 7d27aa8d6e14ad4d5cea3ecbb58f575a113c5288..4234d22c4e6cc5ae53779ecb153865f097d39501 100644
--- a/test/mjsunit/asm/atomics-load.js
+++ b/test/mjsunit/asm/atomics-load.js
@@ -12,8 +12,6 @@ function Module(stdlib, foreign, heap) {
   var MEMU8 = new stdlib.Uint8Array(heap);
   var MEMU16 = new stdlib.Uint16Array(heap);
   var MEMU32 = new stdlib.Uint32Array(heap);
-  var MEMF32 = new stdlib.Float32Array(heap);
-  var MEMF64 = new stdlib.Float64Array(heap);
   var load = stdlib.Atomics.load;
   var fround = stdlib.Math.fround;
 
@@ -47,16 +45,6 @@ function Module(stdlib, foreign, heap) {
     return load(MEMU32, i)>>>0;
   }
 
-  function loadf32(i) {
-    i = i | 0;
-    return fround(load(MEMF32, i));
-  }
-
-  function loadf64(i) {
-    i = i | 0;
-    return +load(MEMF64, i);
-  }
-
   return {
     loadi8: loadi8,
     loadi16: loadi16,
@@ -64,8 +52,6 @@ function Module(stdlib, foreign, heap) {
     loadu8: loadu8,
     loadu16: loadu16,
     loadu32: loadu32,
-    loadf32: loadf32,
-    loadf64: loadf64
   };
 }
 
@@ -98,5 +84,3 @@ testElementType(Int32Array, m.loadi32, 0);
 testElementType(Uint8Array, m.loadu8, 0);
 testElementType(Uint16Array, m.loadu16, 0);
 testElementType(Uint32Array, m.loadu32, 0);
-testElementType(Float32Array, m.loadf32, NaN);
-testElementType(Float64Array, m.loadf64, NaN);