From: David Given <dg@cowlark.com>
Date: Thu, 20 Sep 2018 21:30:38 +0000 (+0200)
Subject: Remove some old, hopefully unused PowerPC code. Teach the code generator about
X-Git-Url: https://git.ndcode.org/public/gitweb.cgi?a=commitdiff_plain;h=985d3dc7d13d2658cc1dbadbb63734adcfb3a436;p=ack.git

Remove some old, hopefully unused PowerPC code. Teach the code generator about
non-volatile long registers.
---

diff --git a/mach/mips/mcg/platform.c b/mach/mips/mcg/platform.c
index 8a937ebef..74396ddcb 100644
--- a/mach/mips/mcg/platform.c
+++ b/mach/mips/mcg/platform.c
@@ -156,72 +156,7 @@ struct hop* platform_move(struct basicblock* bb, struct vreg* vreg, struct hreg*
     struct hop* hop = new_hop(bb, NULL);
 
     if ((src->attrs & TYPE_ATTRS) != (dest->attrs & TYPE_ATTRS))
-    {
-        assert(!src->is_stacked);
-        assert(!dest->is_stacked);
-
-        switch (src->attrs & TYPE_ATTRS)
-        {
-            case burm_int_ATTR:
-                hop_add_insel(hop, "stwu %H, -4(sp)", src);
-                break;
-
-            case burm_long_ATTR:
-                hop_add_insel(hop, "stwu %0H, -4(sp)", src);
-                hop_add_insel(hop, "stwu %1H, -4(sp)", src);
-                break;
-
-            case burm_float_ATTR:
-                hop_add_insel(hop, "stfsu %H, -4(sp)", src);
-                break;
-
-            case burm_double_ATTR:
-                hop_add_insel(hop, "stfdu %H, -8(sp)", src);
-                break;
-
-            default:
-                goto nomove;
-        }
-
-        switch (dest->attrs & TYPE_ATTRS)
-        {
-            case burm_int_ATTR:
-                hop_add_insel(hop, "lwz %H, 0(sp)", dest);
-                break;
-
-            case burm_long_ATTR:
-                hop_add_insel(hop, "lwz %0H, 4(sp)", dest);
-                hop_add_insel(hop, "lwz %1H, 0(sp)", dest);
-                break;
-
-            case burm_float_ATTR:
-                hop_add_insel(hop, "lfs %H, 0(sp)", dest);
-                break;
-
-            case burm_double_ATTR:
-                hop_add_insel(hop, "lfd %H, 0(sp)", dest);
-                break;
-
-            default:
-                goto nomove;
-        }
-
-        switch (dest->attrs & TYPE_ATTRS)
-        {
-            case burm_int_ATTR:
-            case burm_float_ATTR:
-                hop_add_insel(hop, "addi sp, sp, 4");
-                break;
-
-            case burm_double_ATTR:
-            case burm_long_ATTR:
-                hop_add_insel(hop, "addi sp, sp, 8");
-                break;
-
-            default:
-                goto nomove;
-        }
-    }
+            fatal("hreg move of %%%d from %s to %s with mismatched types", vreg->id, src->id, dest->id);
     else
     {
         uint32_t type = src->attrs & TYPE_ATTRS;
diff --git a/mach/mips/mcg/table b/mach/mips/mcg/table
index ff4d77e28..f2b64333e 100644
--- a/mach/mips/mcg/table
+++ b/mach/mips/mcg/table
@@ -44,6 +44,10 @@ REGISTERS
 	r24r25  named("r24", "r25") aliases(r24, r25) long volatile;
 	r2r3    named("r2", "r3")   aliases(r2,  r3)  long volatile lret;
 
+	r17r18  named("r17", "r18") aliases(r17, r18) long;
+	r19r20  named("r19", "r20") aliases(r19, r20) long;
+	r21r22  named("r21", "r22") aliases(r21, r22) long;
+
 	f0                                            float volatile fret;
 	f1                                            float volatile;
 	f2                                            float volatile;