From 41bbbb89c4d31a15ef317dd7de8af749d2a35e5f Mon Sep 17 00:00:00 2001
From: Felix Willgerodt <felix.willgerodt@intel.com>
Date: Wed, 21 Jul 2021 14:38:04 +0200
Subject: gdb, i386: Enable AVX512-bfloat16 for i386 targets.

Values of type bfloat16 can also be used on 32-bit targets, which was missed
in the original enablement.  This also adjusts the testcase to pass with
"unix/-m32", where only the lower 8 AVX registers are available.

gdb/ChangeLog:
2021-07-21  Felix Willgerodt  <Felix.Willgerodt@intel.com>

	* features/i386/32bit-sse.xml: Add bfloat16 type.
	* features/i386/32bit-sse.c: Regenerated.

gdb/testsuite/ChangeLog:
2021-07-21  Felix Willgerodt  <Felix.Willgerodt@intel.com>

	* gdb.arch/x86-avx512bf16.exp: Only use x/z/ymm 0-7.
---
 gdb/features/i386/32bit-sse.c   | 5 +++++
 gdb/features/i386/32bit-sse.xml | 2 ++
 2 files changed, 7 insertions(+)

(limited to 'gdb/features')

diff --git a/gdb/features/i386/32bit-sse.c b/gdb/features/i386/32bit-sse.c
index e5eaf8f..b6d5fba 100644
--- a/gdb/features/i386/32bit-sse.c
+++ b/gdb/features/i386/32bit-sse.c
@@ -10,6 +10,9 @@ create_feature_i386_32bit_sse (struct target_desc *result, long regnum)
 
   feature = tdesc_create_feature (result, "org.gnu.gdb.i386.sse");
   tdesc_type *element_type;
+  element_type = tdesc_named_type (feature, "bfloat16");
+  tdesc_create_vector (feature, "v8bf16", element_type, 8);
+
   element_type = tdesc_named_type (feature, "ieee_single");
   tdesc_create_vector (feature, "v4f", element_type, 4);
 
@@ -31,6 +34,8 @@ create_feature_i386_32bit_sse (struct target_desc *result, long regnum)
   tdesc_type_with_fields *type_with_fields;
   type_with_fields = tdesc_create_union (feature, "vec128");
   tdesc_type *field_type;
+  field_type = tdesc_named_type (feature, "v8bf16");
+  tdesc_add_field (type_with_fields, "v8_bfloat16", field_type);
   field_type = tdesc_named_type (feature, "v4f");
   tdesc_add_field (type_with_fields, "v4_float", field_type);
   field_type = tdesc_named_type (feature, "v2d");
diff --git a/gdb/features/i386/32bit-sse.xml b/gdb/features/i386/32bit-sse.xml
index 7bf3e0f..8710622 100644
--- a/gdb/features/i386/32bit-sse.xml
+++ b/gdb/features/i386/32bit-sse.xml
@@ -7,6 +7,7 @@
 
 <!DOCTYPE feature SYSTEM "gdb-target.dtd">
 <feature name="org.gnu.gdb.i386.sse">
+  <vector id="v8bf16" type="bfloat16" count="8"/>
   <vector id="v4f" type="ieee_single" count="4"/>
   <vector id="v2d" type="ieee_double" count="2"/>
   <vector id="v16i8" type="int8" count="16"/>
@@ -14,6 +15,7 @@
   <vector id="v4i32" type="int32" count="4"/>
   <vector id="v2i64" type="int64" count="2"/>
   <union id="vec128">
+    <field name="v8_bfloat16" type="v8bf16"/>
     <field name="v4_float" type="v4f"/>
     <field name="v2_double" type="v2d"/>
     <field name="v16_int8" type="v16i8"/>
-- 
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