Issue 311 - Add a pass to make NaN bits deterministic. (#322)

2018-05-09 16:11:58 -04:00
parent f636d795c5
commit b36fc6b75f
6 changed files with 105 additions and 0 deletions
--- a/lib/codegen/meta/base/settings.py
+++ b/lib/codegen/meta/base/settings.py
@@ -99,6 +99,16 @@ enable_float = BoolSetting(
        """,
        default=True)

+enable_nan_canonicalization = BoolSetting(
+        """
+        Enable NaN canonicalization
+
+        This replaces NaNs with a single canonical value, for users requiring
+        entirely deterministic WebAssembly computation. This is not required
+        by the WebAssembly spec, so it is not enabled by default.
+        """,
+        default=False)
+
 enable_simd = BoolSetting(
        """Enable the use of SIMD instructions.""",
        default=True)