In encode_pattern_1, we stuff the 'm' into the pattern for the memory
operand, then want to recurse on the address. So A fallthru seems
reasonable.
In m32c_legitimate_address_p we have a special case for certain
registers, but which does not apply to A0. So we've got
case ...
case ...
special handling
case A0_REGNO:
common handling
So fallthru is what we wanted here too.
Installing on the trunk.
Jeff
commit 90189036e0ed5752b5bb448962bda507b97c18c5
Author: law <law@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Wed Oct 26 16:08:30 2016 +0000
* config/m32c/m32c.c (encode_pattern_1): Add fallthru comment.
(m32c_legitimate_address_p): Likewise.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@241572
138bc75d-0d04-0410-961f-82ee72b054a4
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 1e03936..4aec3eb 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,8 @@
2016-10-26 Jeff Law <l...@redhat.com>
+ * config/m32c/m32c.c (encode_pattern_1): Add fallthru comment.
+ (m32c_legitimate_address_p): Likewise.
+
* config/m32r/m32r.c (m32r_print_operand): Adjust fallthru comment.
* config/mcore/mcore.c (mcore_gen_compare): Adjust fallthru comments.
diff --git a/gcc/config/m32c/m32c.c b/gcc/config/m32c/m32c.c
index 7d64c49..ccd9675 100644
--- a/gcc/config/m32c/m32c.c
+++ b/gcc/config/m32c/m32c.c
@@ -176,6 +176,7 @@ encode_pattern_1 (rtx x)
break;
case MEM:
*patternp++ = 'm';
+ /* FALLTHRU */
case CONST:
encode_pattern_1 (XEXP (x, 0));
break;
@@ -1696,6 +1697,7 @@ m32c_legitimate_address_p (machine_mode mode, rtx x, bool
strict)
case SP_REGNO:
if (TARGET_A16 && GET_MODE (x) == SImode)
return 0;
+ /* FALLTHRU */
case A0_REGNO:
return 1;
