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authorAlan Modra <amodra@gmail.com>2004-05-19 05:11:48 +0000
committerAlan Modra <amodra@gmail.com>2004-05-19 05:11:48 +0000
commita30e9cc4a092ed45c7c4c68fc0bfa343782adbae (patch)
tree209d3f569930a3fe4c451bb8caa91102c30cecf8 /opcodes
parentbaffbae05ecad434555561f528065428612962bf (diff)
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* ppc-opc.c (insert_fxm): Enable two operand mfcr when -many as
well as when -mpower4.
Diffstat (limited to 'opcodes')
-rw-r--r--opcodes/ChangeLog7
-rw-r--r--opcodes/ppc-opc.c9
2 files changed, 13 insertions, 3 deletions
diff --git a/opcodes/ChangeLog b/opcodes/ChangeLog
index 8ef9095..3cd88ab 100644
--- a/opcodes/ChangeLog
+++ b/opcodes/ChangeLog
@@ -1,3 +1,8 @@
+2004-05-19 Alan Modra <amodra@bigpond.net.au>
+
+ * ppc-opc.c (insert_fxm): Enable two operand mfcr when -many as
+ well as when -mpower4.
+
2004-05-13 Nick Clifton <nickc@redhat.com>
* po/fr.po: Updated French translation.
@@ -10,7 +15,7 @@
2004-05-05 Alan Modra <amodra@bigpond.net.au>
- PR 146.
+ PR 147.
* ppc-opc.c (PPCVEC): Remove PPC_OPCODE_PPC.
2004-04-29 Ben Elliston <bje@au.ibm.com>
diff --git a/opcodes/ppc-opc.c b/opcodes/ppc-opc.c
index 35f7fc6..51fcfe2 100644
--- a/opcodes/ppc-opc.c
+++ b/opcodes/ppc-opc.c
@@ -1004,8 +1004,13 @@ insert_fxm (unsigned long insn,
/* If only one bit of the FXM field is set, we can use the new form
of the instruction, which is faster. Unlike the Power4 branch hint
- encoding, this is not backward compatible. */
- else if ((dialect & PPC_OPCODE_POWER4) != 0 && (value & -value) == value)
+ encoding, this is not backward compatible. Do not generate the
+ new form unless -mpower4 has been given, or -many and the two
+ operand form of mfcr was used. */
+ else if ((value & -value) == value
+ && ((dialect & PPC_OPCODE_POWER4) != 0
+ || ((dialect & PPC_OPCODE_ANY) != 0
+ && (insn & (0x3ff << 1)) == 19 << 1)))
insn |= 1 << 20;
/* Any other value on mfcr is an error. */