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JMP reg64 does not require a REX.W prefix.
author
H. Peter Anvin
<hpa@zytor.com>
Fri, 26 Sep 2008 06:42:28 +0000
(23:42 -0700)
committer
H. Peter Anvin
<hpa@zytor.com>
Fri, 26 Sep 2008 06:42:28 +0000
(23:42 -0700)
We were redundantly emitting a REX.W prefix for JMP reg64.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
insns.dat
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diff --git
a/insns.dat
b/insns.dat
index 94046ba5c4d693b21e36cca906e6e17bead4bfd9..6f8dc44d53282001b5a166a84a1af829c63e3f14 100644
(file)
--- a/
insns.dat
+++ b/
insns.dat
@@
-645,7
+645,7
@@
JMP mem32|near \321\1\xFF\204 386,NOLONG
JMP mem64|near \323\1\xFF\204 X64
JMP reg16 \320\1\xFF\204 8086
JMP reg32 \321\1\xFF\204 386,NOLONG
-JMP reg64 \32
4
\1\xFF\204 X64
+JMP reg64 \32
3
\1\xFF\204 X64
JMP mem \322\1\xFF\204 8086
JMP mem16 \320\1\xFF\204 8086
JMP mem32 \321\1\xFF\204 386,NOLONG