rs6000-cpus.def (OTHER_FUSION_MASKS): New #define.

2019-05-30  Bill Schmidt  <wschmidt@linux.ibm.com>
	    Michael Meissner  <meissner@linux.ibm.com>

	* rs6000-cpus.def (OTHER_FUSION_MASKS): New #define.
	(ISA_3_0_MASKS_SERVER): Mask off OTHER_FUSION_MASKS.
	(ISA_3_0_MASKS_IEEE): Remove OPTION_MASK_DIRECT_MOVE.
	(ISA_FUTURE_MASKS_SERVER): Add OPTION_MASK_PREFIXED_ADDR.
	(OTHER_FUTURE_MASKS): Likewise.
	(POWERPC_MASKS): Likewise.
	* rs6000.c (rs6000_option_override_internal): Error if -mpcrel is
	specified without -mprefixed-addr or -mcpu=future.  Error if
	-mprefixed-addr is specified without -mcpu=future.
	(rs6000_opt_masks): Add entry for prefixed-addr.
	* rs6000.opt (mprefixed-addr): New option.

Co-Authored-By: Michael Meissner <meissner@linux.ibm.com>
From-SVN: r271781

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 2f6c2a2ea2c0562d9c25832b87179e2146b255eb..c912da6012080b7374a89645b32a66c75db9ffa1 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,18 @@
+2019-05-30  Bill Schmidt  <wschmidt@linux.ibm.com>
+           Michael Meissner  <meissner@linux.ibm.com>
+
+       * rs6000-cpus.def (OTHER_FUSION_MASKS): New #define.
+       (ISA_3_0_MASKS_SERVER): Mask off OTHER_FUSION_MASKS.
+       (ISA_3_0_MASKS_IEEE): Remove OPTION_MASK_DIRECT_MOVE.
+       (ISA_FUTURE_MASKS_SERVER): Add OPTION_MASK_PREFIXED_ADDR.
+       (OTHER_FUTURE_MASKS): Likewise.
+       (POWERPC_MASKS): Likewise.
+       * rs6000.c (rs6000_option_override_internal): Error if -mpcrel is
+       specified without -mprefixed-addr or -mcpu=future.  Error if
+       -mprefixed-addr is specified without -mcpu=future.
+       (rs6000_opt_masks): Add entry for prefixed-addr.
+       * rs6000.opt (mprefixed-addr): New option.
+
 2019-05-30  Sam Tebbs  <sam.tebbs@arm.com>
 
        * aarch64/aarch64.c (aarch64_post_cfi_startproc): Add 

diff --git a/gcc/config/rs6000/rs6000-cpus.def b/gcc/config/rs6000/rs6000-cpus.def
index 5337382bdcfb780e667b1dc22575f4c4bc329442..101efd541837a8c885748da0a03fe8877c24ece5 100644 (file)
--- a/gcc/config/rs6000/rs6000-cpus.def
+++ b/gcc/config/rs6000/rs6000-cpus.def
@@ -56,29 +56,35 @@
                                 | OPTION_MASK_QUAD_MEMORY              \
                                 | OPTION_MASK_QUAD_MEMORY_ATOMIC)
 
+/* ISA masks setting fusion options.  */
+#define OTHER_FUSION_MASKS     (OPTION_MASK_P8_FUSION                  \
+                                | OPTION_MASK_P8_FUSION_SIGN)
+
 /* Add ISEL back into ISA 3.0, since it is supposed to be a win.  Do not add
    FLOAT128_HW here until we are ready to make -mfloat128 on by default.  */
-#define ISA_3_0_MASKS_SERVER   (ISA_2_7_MASKS_SERVER                   \
-                                | OPTION_MASK_ISEL                     \
-                                | OPTION_MASK_MODULO                   \
-                                | OPTION_MASK_P9_MINMAX                \
-                                | OPTION_MASK_P9_MISC                  \
-                                | OPTION_MASK_P9_VECTOR)
+#define ISA_3_0_MASKS_SERVER   ((ISA_2_7_MASKS_SERVER                  \
+                                 | OPTION_MASK_ISEL                    \
+                                 | OPTION_MASK_MODULO                  \
+                                 | OPTION_MASK_P9_MINMAX               \
+                                 | OPTION_MASK_P9_MISC                 \
+                                 | OPTION_MASK_P9_VECTOR)              \
+                                & ~OTHER_FUSION_MASKS)
 
 /* Support for the IEEE 128-bit floating point hardware requires a lot of the
    VSX instructions that are part of ISA 3.0.  */
 #define ISA_3_0_MASKS_IEEE     (OPTION_MASK_VSX                        \
                                 | OPTION_MASK_P8_VECTOR                \
-                                | OPTION_MASK_P9_VECTOR                \
-                                | OPTION_MASK_DIRECT_MOVE)
+                                | OPTION_MASK_P9_VECTOR)
 
 /* Support for a future processor's features.  */
 #define ISA_FUTURE_MASKS_SERVER        (ISA_3_0_MASKS_SERVER                   \
                                 | OPTION_MASK_FUTURE                   \
-                                | OPTION_MASK_PCREL)
+                                | OPTION_MASK_PCREL                    \
+                                | OPTION_MASK_PREFIXED_ADDR)
 
 /* Flags that need to be turned off if -mno-future.  */
-#define OTHER_FUTURE_MASKS     (OPTION_MASK_PCREL)
+#define OTHER_FUTURE_MASKS     (OPTION_MASK_PCREL                      \
+                                | OPTION_MASK_PREFIXED_ADDR)
 
 /* Flags that need to be turned off if -mno-power9-vector.  */
 #define OTHER_P9_VECTOR_MASKS  (OPTION_MASK_FLOAT128_HW                \
@@ -139,6 +145,7 @@
                                 | OPTION_MASK_POWERPC64                \
                                 | OPTION_MASK_PPC_GFXOPT               \
                                 | OPTION_MASK_PPC_GPOPT                \
+                                | OPTION_MASK_PREFIXED_ADDR            \
                                 | OPTION_MASK_QUAD_MEMORY              \
                                 | OPTION_MASK_QUAD_MEMORY_ATOMIC       \
                                 | OPTION_MASK_RECIP_PRECISION          \

diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c
index cfc2a6853c1fb0ee15fd66daf128de19fea60cf5..fca8bdfc04c01ffe76e3b6ad0e89106bc4c02f01 100644 (file)
--- a/gcc/config/rs6000/rs6000.c
+++ b/gcc/config/rs6000/rs6000.c
@@ -4296,15 +4296,24 @@ rs6000_option_override_internal (bool global_init_p)
       rs6000_isa_flags &= ~OPTION_MASK_FLOAT128_HW;
     }
 
-  /* -mpcrel requires the prefixed load/store support on FUTURE systems.  */
-  if (!TARGET_FUTURE && TARGET_PCREL)
+  /* -mpcrel requires prefixed load/store addressing.  */
+  if (TARGET_PCREL && !TARGET_PREFIXED_ADDR)
     {
       if ((rs6000_isa_flags_explicit & OPTION_MASK_PCREL) != 0)
-       error ("%qs requires %qs", "-mpcrel", "-mcpu=future");
+       error ("%qs requires %qs", "-mpcrel", "-mprefixed-addr");
 
       rs6000_isa_flags &= ~OPTION_MASK_PCREL;
     }
 
+  /* -mprefixed-addr (and hence -mpcrel) requires -mcpu=future.  */
+  if (TARGET_PREFIXED_ADDR && !TARGET_FUTURE)
+    {
+      if ((rs6000_isa_flags_explicit & OPTION_MASK_PCREL) != 0)
+       error ("%qs requires %qs", "-mprefixed-addr", "-mcpu=future");
+
+      rs6000_isa_flags &= ~(OPTION_MASK_PCREL | OPTION_MASK_PREFIXED_ADDR);
+    }
+
   /* Print the options after updating the defaults.  */
   if (TARGET_DEBUG_REG || TARGET_DEBUG_TARGET)
     rs6000_print_isa_options (stderr, 0, "after defaults", rs6000_isa_flags);
@@ -36375,6 +36384,7 @@ static struct rs6000_opt_mask const rs6000_opt_masks[] =
   { "power9-vector",           OPTION_MASK_P9_VECTOR,          false, true  },
   { "powerpc-gfxopt",          OPTION_MASK_PPC_GFXOPT,         false, true  },
   { "powerpc-gpopt",           OPTION_MASK_PPC_GPOPT,          false, true  },
+  { "prefixed-addr",           OPTION_MASK_PREFIXED_ADDR,      false, true  },
   { "quad-memory",             OPTION_MASK_QUAD_MEMORY,        false, true  },
   { "quad-memory-atomic",      OPTION_MASK_QUAD_MEMORY_ATOMIC, false, true  },
   { "recip-precision",         OPTION_MASK_RECIP_PRECISION,    false, true  },

diff --git a/gcc/config/rs6000/rs6000.opt b/gcc/config/rs6000/rs6000.opt
index 43b04834746b567a694334e68efc981317b28999..3a4353674b8f483af64245e8e38204adb19e2ec8 100644 (file)
--- a/gcc/config/rs6000/rs6000.opt
+++ b/gcc/config/rs6000/rs6000.opt
@@ -574,6 +574,10 @@ mfuture
 Target Report Mask(FUTURE) Var(rs6000_isa_flags)
 Use instructions for a future architecture.
 
+mprefixed-addr
+Target Undocumented Mask(PREFIXED_ADDR) Var(rs6000_isa_flags)
+Generate (do not generate) prefixed memory instructions.
+
 mpcrel
 Target Report Mask(PCREL) Var(rs6000_isa_flags)
 Generate (do not generate) pc-relative memory addressing.