commit 4bb7a41ed635960e1551e8b5a1aea9ee4d1758a3
author Richard Henderson <rth@twiddle.net> Mon Sep 09 17:03:24 2013 -0700
committer Richard Henderson <rth@twiddle.net> Mon Apr 28 11:06:34 2014 -0700
tree 68ed85758ad038717290bd8f4aa4dae00d08935b
parent 71b926992e0e0a0da078873480c6fc1dd65af6fc

tcg: Add INDEX_op_trunc_shr_i32

Let the backend do something special for truncation.

Signed-off-by: Richard Henderson <rth@twiddle.net>

tcg/README

diff --git a/tcg/README b/tcg/README
index 776e925..a550ff1 100644
--- a/tcg/README
+++ b/tcg/README
@@ -314,6 +314,11 @@
 
   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