Merge remote-tracking branch 'remotes/bonzini/nbd-next' into staging

[qemu.git] / tcg / README

diff --git a/tcg/README b/tcg/README
index 776e9259e33489fc15654ef38ea7df2c09b42d7a..a550ff176da28fa3b75657cef16262b193e830ff 100644 (file)
--- 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