UNALIGNED_MEMORY option to emulate unaligned reads/writes all the time, to support some nonportable code

1 files changed, 4 insertions, 0 deletions

diff --git a/src/settings.js b/src/settings.js
index 0b58a26f..5b1968b9 100644
--- a/src/settings.js
+++ b/src/settings.js
@@ -72,6 +72,10 @@ var DOUBLE_MODE = 1; // How to load and store 64-bit doubles. Without typed arra
                      // then load it aligned, and that load-store will make JS engines alter it if it is being
                      // stored to a typed array for security reasons. That will 'fix' the number from being a
                      // NaN or an infinite number.
+var UNALIGNED_MEMORY = 0; // If enabled, all memory accesses are assumed to be unaligned. (This only matters in
+                          // typed arrays mode 2 where alignment is relevant.) In unaligned memory mode, you
+                          // can run nonportable code that typically would break in JS (or on ARM for that
+                          // matter, which also cannot do unaligned reads/writes), at the cost of slowness
 var PRECISE_I64_MATH = 1; // If enabled, i64 addition etc. is emulated - which is slow but precise. If disabled,
                           // we use the 'double trick' which is fast but incurs rounding at high values.
                           // Note that we do not catch 32-bit multiplication by default (which must be done in