[AArch64][PATCH 1/14] Support ARMv8.2 FP16 Adv.SIMD instructions.

ARMv8.2 adds 16-bit floating point operations as an optional extension
to floating point and Adv.SIMD support. This patch set adds the 16-bit
Adv.SIMD vector and scalar instructions to binutils, making them
available when both +simd and +fp16 architecture extensions are enabled.
The series also adds support for a new vector type, 2H, used by the FP16
scalar pairwise instructions.

The patches in this series:
- Add a FP16 Adv.SIMD feature macro for use by the encoding/decoding
  routines.
- Add FP16 instructions in the group Vector Three Register Same.
- Add FP16 instructions in the group Scalar Three Register Same.
- Add FP16 instructions in the group Vector Two Register Misc.
- Add FP16 instructions in the group Scalar Two Register Misc.
- Add FP16 instructions in the group Vector Indexed Element.
- Add FP16 instructions in the group Scalar Indexed Element.
- Add FP16 instructions in the group Adv.SIMD Across Lanes.
- Add FP16 instructions in the group Adv.SIMD Modified Immediate.
- Rework some code for handling vector types to weaken its assumptions
  about available vector-types.
- Add support for the 2H vector type.
- Add FP16 instructions in the group Adv.SIMD Scalar Pairwise.
- Add FP16 instructions in the group Adv.SIMD Shift By Immediate.
- Add a FP16 instructions in the group Adv.SIMD Scalar Shift By
  Immediate.

This patch adds the feature macro SIMD_F16 to the AArch64
encoding/decoding routines. It is used to decide when the new
instructions are available to the assembler and is true when both +simd
and +fp16 are selected.

opcodes/
2015-12-14  Matthew Wahab  <matthew.wahab@arm.com>

	* aarch64-tbl.h (aarch64_feature_simd_f16): New.
	(SIMD_F16): New.

Change-Id: Iee5a37928418f15e51dfaa927b24cafef7295e8f

diff --git a/opcodes/ChangeLog b/opcodes/ChangeLog
index 7b28fdd..a2d32b3 100644 (file)
--- a/opcodes/ChangeLog
+++ b/opcodes/ChangeLog
@@ -1,5 +1,10 @@
 2015-12-14  Matthew Wahab  <matthew.wahab@arm.com>
 
+       * aarch64-tbl.h (aarch64_feature_simd_f16): New.
+       (SIMD_F16): New.
+
+2015-12-14  Matthew Wahab  <matthew.wahab@arm.com>
+
        * aarch64-opc.c (aarch64_sys_reg_supported_p): Add mistakenly
        removed statement.
        (aarch64_pstatefield_supported_p): Move feature checks for AT

diff --git a/opcodes/aarch64-tbl.h b/opcodes/aarch64-tbl.h
index 35f950f..a726b33 100644 (file)
--- a/opcodes/aarch64-tbl.h
+++ b/opcodes/aarch64-tbl.h
@@ -1303,6 +1303,8 @@ static const aarch64_feature_set aarch64_feature_v8_2 =
   AARCH64_FEATURE (AARCH64_FEATURE_V8_2, 0);
 static const aarch64_feature_set aarch64_feature_fp_f16 =
   AARCH64_FEATURE (AARCH64_FEATURE_F16 | AARCH64_FEATURE_FP, 0);
+static const aarch64_feature_set aarch64_feature_simd_f16 =
+  AARCH64_FEATURE (AARCH64_FEATURE_F16 | AARCH64_FEATURE_SIMD, 0);
 static const aarch64_feature_set aarch64_feature_stat_profile =
   AARCH64_FEATURE (AARCH64_FEATURE_PROFILE, 0);
 
@@ -1315,6 +1317,7 @@ static const aarch64_feature_set aarch64_feature_stat_profile =
 #define LOR    &aarch64_feature_lor
 #define RDMA   &aarch64_feature_rdma
 #define FP_F16 &aarch64_feature_fp_f16
+#define SIMD_F16       &aarch64_feature_simd_f16
 #define RAS    &aarch64_feature_ras
 #define STAT_PROFILE   &aarch64_feature_stat_profile
 #define ARMV8_2        &aarch64_feature_v8_2