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[gas][aarch64] Turn on SVE when using f32mm or f64mm extensions

From: Matthew Malcomson <Matthew dot Malcomson at arm dot com>
To: "binutils at sourceware dot org" <binutils at sourceware dot org>
Cc: Marcus Shawcroft <Marcus dot Shawcroft at arm dot com>, nd <nd at arm dot com>, Richard Earnshaw <Richard dot Earnshaw at arm dot com>, "nickc at redhat dot com" <nickc at redhat dot com>
Date: Mon, 13 Jan 2020 11:31:13 +0000
Subject: [gas][aarch64] Turn on SVE when using f32mm or f64mm extensions
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There are no instructions under these matrix multiply extensions that
can be used without having SVE enabled.
Since these extensions require SVE, we make that explicit in the options
table.

Tested on aarch64-none-elf without regressions.

gas/ChangeLog:

2020-01-13  Matthew Malcomson  <matthew.malcomson@arm.com>

	* config/tc-aarch64.c (f64mm, f32mm): Add sve as a feature
	dependency.



###############     Attachment also inlined for ease of reply    ###############
                Inline version does not contain generated files


diff --git a/gas/config/tc-aarch64.c b/gas/config/tc-aarch64.c
index 8fa8657afcda44983dd21a7aea0b986904f62d6a..4f9c6030c560841527d007429ef1f11bac02330a 100644
--- a/gas/config/tc-aarch64.c
+++ b/gas/config/tc-aarch64.c
@@ -9063,9 +9063,9 @@ static const struct aarch64_option_cpu_value_table aarch64_features[] = {
   {"i8mm",		AARCH64_FEATURE (AARCH64_FEATURE_I8MM, 0),
 			AARCH64_ARCH_NONE},
   {"f32mm",		AARCH64_FEATURE (AARCH64_FEATURE_F32MM, 0),
-			AARCH64_ARCH_NONE},
+			AARCH64_FEATURE (AARCH64_FEATURE_SVE, 0)},
   {"f64mm",		AARCH64_FEATURE (AARCH64_FEATURE_F64MM, 0),
-			AARCH64_ARCH_NONE},
+			AARCH64_FEATURE (AARCH64_FEATURE_SVE, 0)},
   {NULL,		AARCH64_ARCH_NONE, AARCH64_ARCH_NONE},
 };

Attachment: feature-dependencies.patch
Description: feature-dependencies.patch

Follow-Ups:
- Re: [gas][aarch64] Turn on SVE when using f32mm or f64mm extensions
  - From: Nick Clifton

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