Make FAST_MATH an internal setting

Author: devalgupta404

site/source/docs/tools_reference/settings_reference.rst

@@ -46,17 +46,6 @@ defaults 1, absent any other settings:
 
 Default value: 0
 
-.. _fast_math:
-
-FAST_MATH
-=========
-
-Enable fast math optimizations in wasm-opt when -ffast-math is passed.
-This enables aggressive floating-point optimizations that may violate
-IEEE 754 semantics but can improve performance.
-
-Default value: 0
-
 .. _check_null_writes:
 
 CHECK_NULL_WRITES

src/settings.js

@@ -66,12 +66,6 @@ var ASSERTIONS = 1;
 // [link]
 var STACK_OVERFLOW_CHECK = 0;
 
-// Enable fast math optimizations in wasm-opt when -ffast-math is passed.
-// This enables aggressive floating-point optimizations that may violate
-// IEEE 754 semantics but can improve performance.
-// [link]
-var FAST_MATH = 0;
-
 // When STACK_OVERFLOW_CHECK is enabled we also check writes to address zero.
 // This can help detect NULL pointer usage.  If you want to skip this extra
 // check (for example, if you want reads from the address zero to always return

src/settings_internal.js

@@ -260,6 +260,11 @@ var ASYNCIFY_IMPORTS_EXCEPT_JS_LIBS = [];
 
 var WARN_DEPRECATED = true;
 
+// Enable fast math optimizations in wasm-opt when -ffast-math is passed.
+// This enables aggressive floating-point optimizations that may violate
+// IEEE 754 semantics but can improve performance.
+var FAST_MATH = 0;
+
 // WebGL 2 provides new garbage-free entry points to call to WebGL. Use
 // those always when possible.
 // We currently set this to false for certain browser when large memory sizes