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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 776e9259e3..a550ff176d 100644
--- a/tcg/README
+++ b/tcg/README
@@ -314,6 +314,11 @@ This operation would be equivalent to
dest = (t1 & ~0x0f00) | ((t2 << 8) & 0x0f00)
+* trunc_shr_i32 t0, t1, pos
+
+For 64-bit hosts only, right shift the 64-bit input T1 by POS and
+truncate to 32-bit output T0. Depending on the host, this may be
+a simple mov/shift, or may require additional canonicalization.
********* Conditional moves