aarch64.h (AARCH64_FL_DOTPROD): New.

2017-10-16  Tamar Christina  <tamar.christina@arm.com>

	* config/aarch64/aarch64.h (AARCH64_FL_DOTPROD): New.
	(AARCH64_ISA_DOTPROD, TARGET_DOTPROD): New.
	* config/aarch64/aarch64-c.c (aarch64_update_cpp_builtins): Add TARGET_DOTPROD.
	* config/aarch64/aarch64-option-extensions.def (dotprod): New.
	* config/aarch64/aarch64-cores.def (cortex-a55, cortex-a75): Enable TARGET_DOTPROD.
	(cortex-a75.cortex-a55): Likewise.
	* doc/invoke.texi (aarch64-feature-modifiers): Document dotprod.

From-SVN: r253782

4 files changed, 20 insertions, 10 deletions

diff --git a/gcc/config/aarch64/aarch64-c.c b/gcc/config/aarch64/aarch64-c.c
index 177e638..c7d866f 100644
--- a/gcc/config/aarch64/aarch64-c.c
+++ b/gcc/config/aarch64/aarch64-c.c
@@ -106,6 +106,7 @@ aarch64_update_cpp_builtins (cpp_reader *pfile)
 
 
   aarch64_def_or_undef (TARGET_CRC32, "__ARM_FEATURE_CRC32", pfile);
+  aarch64_def_or_undef (TARGET_DOTPROD, "__ARM_FEATURE_DOTPROD", pfile);
 
   cpp_undef (pfile, "__AARCH64_CMODEL_TINY__");
   cpp_undef (pfile, "__AARCH64_CMODEL_SMALL__");
diff --git a/gcc/config/aarch64/aarch64-cores.def b/gcc/config/aarch64/aarch64-cores.def
index 1089332..16e4485 100644
--- a/gcc/config/aarch64/aarch64-cores.def
+++ b/gcc/config/aarch64/aarch64-cores.def
@@ -83,8 +83,8 @@ AARCH64_CORE("thunderx2t99",  thunderx2t99,  thunderx2t99, 8_1A,  AARCH64_FL_FOR
 /* ARMv8.2-A Architecture Processors.  */
 
 /* ARM ('A') cores. */
-AARCH64_CORE("cortex-a55",  cortexa55, cortexa53, 8_2A,  AARCH64_FL_FOR_ARCH8_2 | AARCH64_FL_RCPC, cortexa53, 0x41, 0xd05, -1)
-AARCH64_CORE("cortex-a75",  cortexa75, cortexa57, 8_2A,  AARCH64_FL_FOR_ARCH8_2 | AARCH64_FL_RCPC, cortexa73, 0x41, 0xd0a, -1)
+AARCH64_CORE("cortex-a55",  cortexa55, cortexa53, 8_2A,  AARCH64_FL_FOR_ARCH8_2 | AARCH64_FL_RCPC | AARCH64_FL_DOTPROD, cortexa53, 0x41, 0xd05, -1)
+AARCH64_CORE("cortex-a75",  cortexa75, cortexa57, 8_2A,  AARCH64_FL_FOR_ARCH8_2 | AARCH64_FL_RCPC | AARCH64_FL_DOTPROD, cortexa73, 0x41, 0xd0a, -1)
 
 /* ARMv8-A big.LITTLE implementations.  */
 
@@ -95,6 +95,6 @@ AARCH64_CORE("cortex-a73.cortex-a53",  cortexa73cortexa53, cortexa53, 8A,  AARCH
 
 /* ARM DynamIQ big.LITTLE configurations.  */
 
-AARCH64_CORE("cortex-a75.cortex-a55",  cortexa75cortexa55, cortexa53, 8_2A,  AARCH64_FL_FOR_ARCH8_2 | AARCH64_FL_RCPC, cortexa73, 0x41, AARCH64_BIG_LITTLE (0xd0a, 0xd05), -1)
+AARCH64_CORE("cortex-a75.cortex-a55",  cortexa75cortexa55, cortexa53, 8_2A,  AARCH64_FL_FOR_ARCH8_2 | AARCH64_FL_RCPC | AARCH64_FL_DOTPROD, cortexa73, 0x41, AARCH64_BIG_LITTLE (0xd0a, 0xd05), -1)
 
 #undef AARCH64_CORE
diff --git a/gcc/config/aarch64/aarch64-option-extensions.def b/gcc/config/aarch64/aarch64-option-extensions.def
index a989a2e..2c808f0 100644
--- a/gcc/config/aarch64/aarch64-option-extensions.def
+++ b/gcc/config/aarch64/aarch64-option-extensions.def
@@ -43,8 +43,8 @@
 AARCH64_OPT_EXTENSION("fp", AARCH64_FL_FP, 0, AARCH64_FL_SIMD | AARCH64_FL_CRYPTO | AARCH64_FL_F16, "fp")
 
 /* Enabling "simd" also enables "fp".
-   Disabling "simd" also disables "crypto".  */
-AARCH64_OPT_EXTENSION("simd", AARCH64_FL_SIMD, AARCH64_FL_FP, AARCH64_FL_CRYPTO, "asimd")
+   Disabling "simd" also disables "crypto" and "dotprod".  */
+AARCH64_OPT_EXTENSION("simd", AARCH64_FL_SIMD, AARCH64_FL_FP, AARCH64_FL_CRYPTO | AARCH64_FL_DOTPROD, "asimd")
 
 /* Enabling "crypto" also enables "fp", "simd".
    Disabling "crypto" just disables "crypto".  */
@@ -67,4 +67,8 @@ AARCH64_OPT_EXTENSION("rcpc", AARCH64_FL_RCPC, 0, 0, "lrcpc")
    Disabling "rdma" just disables "rdma".  */
 AARCH64_OPT_EXTENSION("rdma", AARCH64_FL_RDMA, AARCH64_FL_FP | AARCH64_FL_SIMD, 0, "asimdrdm")
 
+/* Enabling "dotprod" also enables "simd".
+   Disabling "dotprod" only disables "dotprod".  */
+AARCH64_OPT_EXTENSION("dotprod", AARCH64_FL_DOTPROD, AARCH64_FL_SIMD, 0, "asimddp")
+
 #undef AARCH64_OPT_EXTENSION
diff --git a/gcc/config/aarch64/aarch64.h b/gcc/config/aarch64/aarch64.h
index 1c3aff5..98d93c6 100644
--- a/gcc/config/aarch64/aarch64.h
+++ b/gcc/config/aarch64/aarch64.h
@@ -136,14 +136,15 @@ extern unsigned aarch64_architecture_version;
 #define AARCH64_FL_CRC        (1 << 3)	/* Has CRC.  */
 /* ARMv8.1-A architecture extensions.  */
 #define AARCH64_FL_LSE	      (1 << 4)  /* Has Large System Extensions.  */
-#define AARCH64_FL_RDMA	      (1 << 5)  /* Has Round Double Multiply Add.  */
-#define AARCH64_FL_V8_1	      (1 << 6)  /* Has ARMv8.1-A extensions.  */
+#define AARCH64_FL_RDMA       (1 << 5)  /* Has Round Double Multiply Add.  */
+#define AARCH64_FL_V8_1       (1 << 6)  /* Has ARMv8.1-A extensions.  */
 /* ARMv8.2-A architecture extensions.  */
-#define AARCH64_FL_V8_2	      (1 << 8)  /* Has ARMv8.2-A features.  */
+#define AARCH64_FL_V8_2       (1 << 8)  /* Has ARMv8.2-A features.  */
 #define AARCH64_FL_F16	      (1 << 9)  /* Has ARMv8.2-A FP16 extensions.  */
 /* ARMv8.3-A architecture extensions.  */
-#define AARCH64_FL_V8_3	      (1 << 10)  /* Has ARMv8.3-A features.  */
-#define AARCH64_FL_RCPC	      (1 << 11)  /* Has support for RCpc model.  */
+#define AARCH64_FL_V8_3       (1 << 10)  /* Has ARMv8.3-A features.  */
+#define AARCH64_FL_RCPC       (1 << 11)  /* Has support for RCpc model.  */
+#define AARCH64_FL_DOTPROD    (1 << 12)  /* Has ARMv8.2-A Dot Product ins.  */
 
 /* Has FP and SIMD.  */
 #define AARCH64_FL_FPSIMD     (AARCH64_FL_FP | AARCH64_FL_SIMD)
@@ -172,6 +173,7 @@ extern unsigned aarch64_architecture_version;
 #define AARCH64_ISA_V8_2	   (aarch64_isa_flags & AARCH64_FL_V8_2)
 #define AARCH64_ISA_F16		   (aarch64_isa_flags & AARCH64_FL_F16)
 #define AARCH64_ISA_V8_3	   (aarch64_isa_flags & AARCH64_FL_V8_3)
+#define AARCH64_ISA_DOTPROD	   (aarch64_isa_flags & AARCH64_FL_DOTPROD)
 
 /* Crypto is an optional extension to AdvSIMD.  */
 #define TARGET_CRYPTO (TARGET_SIMD && AARCH64_ISA_CRYPTO)
@@ -186,6 +188,9 @@ extern unsigned aarch64_architecture_version;
 #define TARGET_FP_F16INST (TARGET_FLOAT && AARCH64_ISA_F16)
 #define TARGET_SIMD_F16INST (TARGET_SIMD && AARCH64_ISA_F16)
 
+/* Dot Product is an optional extension to AdvSIMD enabled through +dotprod.  */
+#define TARGET_DOTPROD (TARGET_SIMD && AARCH64_ISA_DOTPROD)
+
 /* ARMv8.3-A features.  */
 #define TARGET_ARMV8_3	(AARCH64_ISA_V8_3)