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-rw-r--r--tcg/README5
1 files changed, 5 insertions, 0 deletions
diff --git a/tcg/README b/tcg/README
index 466e330368..fd72cad357 100644
--- a/tcg/README
+++ b/tcg/README
@@ -280,6 +280,11 @@ to zero.
64 bit byte swap
+* discard_i32/i64 t0
+
+Indicate that the value of t0 won't be used later. It is useful to
+force dead code elimination.
+
********* Type conversions
* ext_i32_i64 t0, t1