Enable Intel PCONFIG instruction.

Intel has disclosed a set of new instructions for Icelake processor.
The spec is
https://software.intel.com/sites/default/files/managed/c5/15/architecture-instruction-set-extensions-programming-reference.pdf

This patch enables Intel PCONFIG instruction.

gas/
	* config/tc-i386.c (cpu_arch): Add .pconfig.
	* doc/c-i386.texi: Document .pconfig.
	* testsuite/gas/i386/i386.exp: Add PCONFIG tests.
	* testsuite/gas/i386/pconfig-intel.d: New test.
	* testsuite/gas/i386/pconfig.d: Likewise.
	* testsuite/gas/i386/pconfig.s: Likewise.
	* testsuite/gas/i386/x86-64-pconfig-intel.d: Likewise.
	* testsuite/gas/i386/x86-64-pconfig.d: Likewise.
	* testsuite/gas/i386/x86-64-pconfig.s: Likewise.
opcodes/
	* i386-dis.c (enum): Add pconfig.
	* i386-gen.c (cpu_flag_init): Add CPU_PCONFIG_FLAGS.
	(cpu_flags): Add CpuPCONFIG.
	* i386-opc.h (enum): Add CpuPCONFIG.
	(i386_cpu_flags): Add cpupconfig.
	* i386-opc.tbl: Add PCONFIG instruction.
	* i386-init.h: Regenerate.
	* i386-tbl.h: Likewise.

7 files changed, 58 insertions, 0 deletions

diff --git a/gas/testsuite/gas/i386/i386.exp b/gas/testsuite/gas/i386/i386.exp
index 4123cd8..a21ef84 100644
--- a/gas/testsuite/gas/i386/i386.exp
+++ b/gas/testsuite/gas/i386/i386.exp
@@ -415,6 +415,8 @@ if [expr ([istarget "i*86-*-*"] ||  [istarget "x86_64-*-*"]) && [gas_32_check]]
     run_dump_test "vpclmulqdq-intel"
     run_dump_test "wbnoinvd"
     run_dump_test "wbnoinvd-intel"
+    run_dump_test "pconfig"
+    run_dump_test "pconfig-intel"
     run_list_test "avx512vl-1" "-al"
     run_list_test "avx512vl-2" "-al"
     run_dump_test "fpu-bad"
@@ -884,6 +886,8 @@ if [expr ([istarget "i*86-*-*"] || [istarget "x86_64-*-*"]) && [gas_64_check]] t
     run_dump_test "x86-64-vpclmulqdq-intel"
     run_dump_test "x86-64-wbnoinvd"
     run_dump_test "x86-64-wbnoinvd-intel"
+    run_dump_test "x86-64-pconfig"
+    run_dump_test "x86-64-pconfig-intel"
     run_dump_test "x86-64-fence-as-lock-add-yes"
     run_dump_test "x86-64-fence-as-lock-add-no"
     run_dump_test "x86-64-pr20141"
diff --git a/gas/testsuite/gas/i386/pconfig-intel.d b/gas/testsuite/gas/i386/pconfig-intel.d
new file mode 100644
index 0000000..08584fe
--- /dev/null
+++ b/gas/testsuite/gas/i386/pconfig-intel.d
@@ -0,0 +1,11 @@
+#objdump: -dwMintel
+#name: i386 PCONFIG (Intel disassembly)
+#source: pconfig.s
+
+.*: +file format .*
+
+Disassembly of section .text:
+
+0+ <_start>:
+[ 	]*[a-f0-9]+:[ 	]*0f 01 c5[ 	]*pconfig[ 	]*
+#pass
diff --git a/gas/testsuite/gas/i386/pconfig.d b/gas/testsuite/gas/i386/pconfig.d
new file mode 100644
index 0000000..de61788
--- /dev/null
+++ b/gas/testsuite/gas/i386/pconfig.d
@@ -0,0 +1,11 @@
+#objdump: -dw
+#name: i386 PCONFIG insn
+
+.*: +file format .*
+
+
+Disassembly of section .text:
+
+0+ <_start>:
+[ 	]*[a-f0-9]+:[ 	]*0f 01 c5[ 	]*pconfig[ 	]*
+#pass
diff --git a/gas/testsuite/gas/i386/pconfig.s b/gas/testsuite/gas/i386/pconfig.s
new file mode 100644
index 0000000..f08c628
--- /dev/null
+++ b/gas/testsuite/gas/i386/pconfig.s
@@ -0,0 +1,5 @@
+# Check 32bit PCONFIG instructions.
+
+	.text
+_start:
+	pconfig
diff --git a/gas/testsuite/gas/i386/x86-64-pconfig-intel.d b/gas/testsuite/gas/i386/x86-64-pconfig-intel.d
new file mode 100644
index 0000000..08584fe
--- /dev/null
+++ b/gas/testsuite/gas/i386/x86-64-pconfig-intel.d
@@ -0,0 +1,11 @@
+#objdump: -dwMintel
+#name: i386 PCONFIG (Intel disassembly)
+#source: pconfig.s
+
+.*: +file format .*
+
+Disassembly of section .text:
+
+0+ <_start>:
+[ 	]*[a-f0-9]+:[ 	]*0f 01 c5[ 	]*pconfig[ 	]*
+#pass
diff --git a/gas/testsuite/gas/i386/x86-64-pconfig.d b/gas/testsuite/gas/i386/x86-64-pconfig.d
new file mode 100644
index 0000000..de61788
--- /dev/null
+++ b/gas/testsuite/gas/i386/x86-64-pconfig.d
@@ -0,0 +1,11 @@
+#objdump: -dw
+#name: i386 PCONFIG insn
+
+.*: +file format .*
+
+
+Disassembly of section .text:
+
+0+ <_start>:
+[ 	]*[a-f0-9]+:[ 	]*0f 01 c5[ 	]*pconfig[ 	]*
+#pass
diff --git a/gas/testsuite/gas/i386/x86-64-pconfig.s b/gas/testsuite/gas/i386/x86-64-pconfig.s
new file mode 100644
index 0000000..8fb9b02
--- /dev/null
+++ b/gas/testsuite/gas/i386/x86-64-pconfig.s
@@ -0,0 +1,5 @@
+# Check 64bit PCONFIG instructions.
+
+	.text
+_start:
+	pconfig