From: Taylor R Campbell <campbell@mumble.net>
Date: Sun, 16 Mar 2014 15:21:38 +0000 (+0000)
Subject: Revert "Assemble (JMP (@PCR FOO)) (LABEL FOO) to zero bits on amd64."
X-Git-Tag: release-9.2.0~25
X-Git-Url: https://birchwood-abbey.net/git?a=commitdiff_plain;h=882cfe5baa1a018964d98a686c9826a15bfaaca6;p=mit-scheme.git

Revert "Assemble (JMP (@PCR FOO)) (LABEL FOO) to zero bits on amd64."

This reverts commit f4dda7bf4a6f9f529fd2b295a0f51ee9ed6dc22b.

Apparently this doesn't work.
---

diff --git a/src/compiler/machines/x86-64/instr1.scm b/src/compiler/machines/x86-64/instr1.scm
index 4fd2969f7..72c069507 100644
--- a/src/compiler/machines/x86-64/instr1.scm
+++ b/src/compiler/machines/x86-64/instr1.scm
@@ -566,8 +566,6 @@ USA.
 (define-instruction JMP
   (((@PCR (? dest)))
    (VARIABLE-WIDTH (disp `(- ,dest (+ *PC* 2)))
-     ((0 0)
-      (BITS))
      ((#x-80 #x7f)
       (BITS (8 #xeb)
 	    (8 disp SIGNED)))
@@ -577,8 +575,6 @@ USA.
 
   (((@PCRO (? dest) (? offset)))
    (VARIABLE-WIDTH (disp `(- (+ ,dest ,offset) (+ *PC* 2)))
-     ((0 0)
-      (BITS))
      ((#x-80 #x7f)
       (BITS (8 #xeb)
 	    (8 disp SIGNED)))