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authorbellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162>2008-02-04 00:37:54 +0000
committerbellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162>2008-02-04 00:37:54 +0000
commit5ff9d6a469fbbd3861ea49e241b0ccd09aedd62b (patch)
tree6604027fe330eb0722c528ee57d3212868794bc4 /tcg/README
parentbb210e78b35d21f8bfe2addbe64b65f586f5a241 (diff)
downloadqemu-5ff9d6a469fbbd3861ea49e241b0ccd09aedd62b.tar.gz
fixed sign extensions - added explicit side effect op flag - added discard instruction
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3963 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'tcg/README')
-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