PowerPC ncg never uses the rules to stack LOCAL or DLOCAL.

diff --git a/mach/powerpc/ncg/table b/mach/powerpc/ncg/table
index 23b9042..a116209 100644 (file)
--- a/mach/powerpc/ncg/table
+++ b/mach/powerpc/ncg/table
@@ -328,6 +328,7 @@ INSTRUCTIONS
   xori            GPR:wo, GPR:ro, CONST:ro.
   xoris           GPR:wo, GPR:ro, CONST:ro.
 
+  bug ">>> BUG"           LABEL:ro cost(0, 0).
   comment "!"             LABEL:ro cost(0, 0).
 
 
@@ -588,16 +589,6 @@ TESTS
 
 STACKINGRULES
 
-       from LOCAL inreg(%off)==reg_float to STACK
-               gen
-                       COMMENT("stack LOCAL")
-                       stfsu %1, {IND_RC_W, sp, 0-4}
-
-       from LOCAL to STACK
-               gen
-                       COMMENT("stack LOCAL")
-                       stwu %1, {IND_RC_W, sp, 0-4}
-
        from REG to STACK
                gen
                        COMMENT("stack REG")
@@ -615,7 +606,7 @@ STACKINGRULES
                        move %1, FSCRATCH
                        stfdu FSCRATCH, {IND_RC_D, sp, 0-8}
 
-       from FREG+DLOCAL to STACK
+       from FREG to STACK
                gen
                        COMMENT("stack FREG+DLOCAL")
                        stfdu %1, {IND_RC_D, sp, 0-8}
@@ -625,6 +616,16 @@ STACKINGRULES
                        COMMENT("stack FSREG")
                        stfsu %1, {IND_RC_W, sp, 0-4}
 
+       /*
+        * We never stack LOCAL or DLOCAL tokens, because we only use
+        * them for register variables, so ncg pushes the register,
+        * not the token.  These rules only prevent an error in ncgg.
+        */
+       from LOCAL to STACK
+               gen bug {LABEL, "STACKING LOCAL"}
+       from DLOCAL to STACK
+               gen bug {LABEL, "STACKING DLOCAL"}
+
 
 
 COERCIONS