Add copy_special instruction.

2017-11-22 19:18:11 -08:00
parent 8ed37e352e
commit cdf70ccb77
6 changed files with 36 additions and 0 deletions
--- a/lib/cretonne/meta/base/instructions.py
+++ b/lib/cretonne/meta/base/instructions.py
@@ -537,6 +537,13 @@ regmove = Instruction(
        ins=(x, src, dst),
        other_side_effects=True)

+copy_special = Instruction(
+        'copy_special', r"""
+        Copies a value from one special register to another. e.g. rbp -> rsp.
+        """,
+        ins=(src, dst),
+        other_side_effects=True)
+
 regspill = Instruction(
        'regspill', r"""
        Temporarily divert ``x`` from ``src`` to ``SS``.