UNRATIFIED RISC-V: Add 'Zihintntl' extension tests

[DO NOT MERGE]
Until 'Zihintntl' extension is ratified and final version number is
determined, this patch should not merged upstream.  This commit uses
unratified version 0.2 as in documentation (instead of possible 1.0
after ratification).

This commit adds testcases for 'Zihintntl' extension.

gas/ChangeLog:

	* testsuite/gas/riscv/zihintntl.s: New test for 4-byte hint
	instructions.
	* testsuite/gas/riscv/zihintntl.d: Likewise.
	* testsuite/gas/riscv/zihintntl-auto-c.d: Likewise but test auto
	compression to 2-byte instructions.
	* testsuite/gas/riscv/zihintntl-c.s: New test for 2-byte hint
	instructions.
	* testsuite/gas/riscv/zihintntl-c.d: Likewise.
	* testsuite/gas/riscv/zihintntl-c-noalias.d: Likewise but
	different output with -Mno-aliases.
	* testsuite/gas/riscv/zihintntl-base.s: New test for base
	instructions corresponding non-temporal locality hints.
	* testsuite/gas/riscv/zihintntl-base.d: Likewise.
	* testsuite/gas/riscv/zihintntl-base-noarch.d: Likewise but
	without 'Zihintntl' extension in -march.

gas/testsuite/gas/riscv/zihintntl-auto-c.d

@@ -0,0 +1,17 @@
+#as: -march=rv64ic_zihintntl
+#source: zihintntl.s
+#objdump: -dr
+
+.*:[ 	]+file format .*
+
+Disassembly of section .text:
+
+0+000 <target>:
+[ 	]+[0-9a-f]+:[ 	]+900a[ 	]+ntl\.p1
+[ 	]+[0-9a-f]+:[ 	]+01b28023[ 	]+sb[ 	]+s11,0\(t0\)
+[ 	]+[0-9a-f]+:[ 	]+900e[ 	]+ntl\.pall
+[ 	]+[0-9a-f]+:[ 	]+01b28123[ 	]+sb[ 	]+s11,2\(t0\)
+[ 	]+[0-9a-f]+:[ 	]+9012[ 	]+ntl\.s1
+[ 	]+[0-9a-f]+:[ 	]+01b28223[ 	]+sb[ 	]+s11,4\(t0\)
+[ 	]+[0-9a-f]+:[ 	]+9016[ 	]+ntl\.all
+[ 	]+[0-9a-f]+:[ 	]+01b28323[ 	]+sb[ 	]+s11,6\(t0\)

gas/testsuite/gas/riscv/zihintntl-base-noarch.d

@@ -0,0 +1,25 @@
+#as: -march=rv64ic
+#source: zihintntl-base.s
+#objdump: -dr
+
+.*:[ 	]+file format .*
+
+Disassembly of section .text:
+
+0+000 <target>:
+[ 	]+[0-9a-f]+:[ 	]+00200033[ 	]+add[		]+zero,zero,sp
+[ 	]+[0-9a-f]+:[ 	]+01b28823[ 	]+sb[ 		]+s11,16\(t0\)
+[ 	]+[0-9a-f]+:[ 	]+00300033[ 	]+add[		]+zero,zero,gp
+[ 	]+[0-9a-f]+:[ 	]+01b28923[ 	]+sb[ 		]+s11,18\(t0\)
+[ 	]+[0-9a-f]+:[ 	]+00400033[ 	]+add[		]+zero,zero,tp
+[ 	]+[0-9a-f]+:[ 	]+01b28a23[ 	]+sb[ 		]+s11,20\(t0\)
+[ 	]+[0-9a-f]+:[ 	]+00500033[ 	]+add[		]+zero,zero,t0
+[ 	]+[0-9a-f]+:[ 	]+01b28b23[ 	]+sb[ 		]+s11,22\(t0\)
+[ 	]+[0-9a-f]+:[ 	]+900a[ 	]+c\.add[ 	]+zero,sp
+[ 	]+[0-9a-f]+:[ 	]+01b28c23[ 	]+sb[ 		]+s11,24\(t0\)
+[ 	]+[0-9a-f]+:[ 	]+900e[ 	]+c\.add[ 	]+zero,gp
+[ 	]+[0-9a-f]+:[ 	]+01b28d23[ 	]+sb[ 		]+s11,26\(t0\)
+[ 	]+[0-9a-f]+:[ 	]+9012[ 	]+c\.add[ 	]+zero,tp
+[ 	]+[0-9a-f]+:[ 	]+01b28e23[ 	]+sb[ 		]+s11,28\(t0\)
+[ 	]+[0-9a-f]+:[ 	]+9016[ 	]+c\.add[ 	]+zero,t0
+[ 	]+[0-9a-f]+:[ 	]+01b28f23[ 	]+sb[ 		]+s11,30\(t0\)

gas/testsuite/gas/riscv/zihintntl-base.d

@@ -0,0 +1,25 @@
+#as: -march=rv64ic_zihintntl
+#source: zihintntl-base.s
+#objdump: -dr -Mno-aliases
+
+.*:[ 	]+file format .*
+
+Disassembly of section .text:
+
+0+000 <target>:
+[ 	]+[0-9a-f]+:[ 	]+00200033[ 	]+ntl\.p1
+[ 	]+[0-9a-f]+:[ 	]+01b28823[ 	]+sb[ 	]+s11,16\(t0\)
+[ 	]+[0-9a-f]+:[ 	]+00300033[ 	]+ntl\.pall
+[ 	]+[0-9a-f]+:[ 	]+01b28923[ 	]+sb[ 	]+s11,18\(t0\)
+[ 	]+[0-9a-f]+:[ 	]+00400033[ 	]+ntl\.s1
+[ 	]+[0-9a-f]+:[ 	]+01b28a23[ 	]+sb[ 	]+s11,20\(t0\)
+[ 	]+[0-9a-f]+:[ 	]+00500033[ 	]+ntl\.all
+[ 	]+[0-9a-f]+:[ 	]+01b28b23[ 	]+sb[ 	]+s11,22\(t0\)
+[ 	]+[0-9a-f]+:[ 	]+900a[ 	]+c\.ntl\.p1
+[ 	]+[0-9a-f]+:[ 	]+01b28c23[ 	]+sb[ 	]+s11,24\(t0\)
+[ 	]+[0-9a-f]+:[ 	]+900e[ 	]+c\.ntl\.pall
+[ 	]+[0-9a-f]+:[ 	]+01b28d23[ 	]+sb[ 	]+s11,26\(t0\)
+[ 	]+[0-9a-f]+:[ 	]+9012[ 	]+c\.ntl\.s1
+[ 	]+[0-9a-f]+:[ 	]+01b28e23[ 	]+sb[ 	]+s11,28\(t0\)
+[ 	]+[0-9a-f]+:[ 	]+9016[ 	]+c\.ntl\.all
+[ 	]+[0-9a-f]+:[ 	]+01b28f23[ 	]+sb[ 	]+s11,30\(t0\)

gas/testsuite/gas/riscv/zihintntl-base.s

@@ -0,0 +1,17 @@
+target:
+	add	x0, x0, x2      # ntl.p1
+	sb	s11, 2*0x8(t0)
+	add	x0, x0, x3      # ntl.pall
+	sb	s11, 2*0x9(t0)
+	add	x0, x0, x4      # ntl.s1
+	sb	s11, 2*0xa(t0)
+	add	x0, x0, x5      # ntl.all
+	sb	s11, 2*0xb(t0)
+	c.add	x0, x2          # c.ntl.p1
+	sb	s11, 2*0xc(t0)
+	c.add	x0, x3          # c.ntl.pall
+	sb	s11, 2*0xd(t0)
+	c.add	x0, x4          # c.ntl.s1
+	sb	s11, 2*0xe(t0)
+	c.add	x0, x5          # c.ntl.all
+	sb	s11, 2*0xf(t0)

gas/testsuite/gas/riscv/zihintntl-c-noalias.d

@@ -0,0 +1,17 @@
+#as: -march=rv64ic_zihintntl
+#source: zihintntl-c.s
+#objdump: -dr -Mno-aliases
+
+.*:[ 	]+file format .*
+
+Disassembly of section .text:
+
+0+000 <target>:
+[ 	]+[0-9a-f]+:[ 	]+900a[ 	]+c\.ntl\.p1
+[ 	]+[0-9a-f]+:[ 	]+01b28423[ 	]+sb[ 	]+s11,8\(t0\)
+[ 	]+[0-9a-f]+:[ 	]+900e[ 	]+c\.ntl\.pall
+[ 	]+[0-9a-f]+:[ 	]+01b28523[ 	]+sb[ 	]+s11,10\(t0\)
+[ 	]+[0-9a-f]+:[ 	]+9012[ 	]+c\.ntl\.s1
+[ 	]+[0-9a-f]+:[ 	]+01b28623[ 	]+sb[ 	]+s11,12\(t0\)
+[ 	]+[0-9a-f]+:[ 	]+9016[ 	]+c\.ntl\.all
+[ 	]+[0-9a-f]+:[ 	]+01b28723[ 	]+sb[ 	]+s11,14\(t0\)

gas/testsuite/gas/riscv/zihintntl-c.d

@@ -0,0 +1,17 @@
+#as: -march=rv64ic_zihintntl
+#source: zihintntl-c.s
+#objdump: -dr
+
+.*:[ 	]+file format .*
+
+Disassembly of section .text:
+
+0+000 <target>:
+[ 	]+[0-9a-f]+:[ 	]+900a[ 	]+ntl\.p1
+[ 	]+[0-9a-f]+:[ 	]+01b28423[ 	]+sb[ 	]+s11,8\(t0\)
+[ 	]+[0-9a-f]+:[ 	]+900e[ 	]+ntl\.pall
+[ 	]+[0-9a-f]+:[ 	]+01b28523[ 	]+sb[ 	]+s11,10\(t0\)
+[ 	]+[0-9a-f]+:[ 	]+9012[ 	]+ntl\.s1
+[ 	]+[0-9a-f]+:[ 	]+01b28623[ 	]+sb[ 	]+s11,12\(t0\)
+[ 	]+[0-9a-f]+:[ 	]+9016[ 	]+ntl\.all
+[ 	]+[0-9a-f]+:[ 	]+01b28723[ 	]+sb[ 	]+s11,14\(t0\)

gas/testsuite/gas/riscv/zihintntl-c.s

@@ -0,0 +1,9 @@
+target:
+	c.ntl.p1
+	sb	s11, 2*0x4(t0)
+	c.ntl.pall
+	sb	s11, 2*0x5(t0)
+	c.ntl.s1
+	sb	s11, 2*0x6(t0)
+	c.ntl.all
+	sb	s11, 2*0x7(t0)

gas/testsuite/gas/riscv/zihintntl.d

@@ -0,0 +1,17 @@
+#as: -march=rv64i_zihintntl
+#source: zihintntl.s
+#objdump: -dr
+
+.*:[ 	]+file format .*
+
+Disassembly of section .text:
+
+0+000 <target>:
+[ 	]+[0-9a-f]+:[ 	]+00200033[ 	]+ntl\.p1
+[ 	]+[0-9a-f]+:[ 	]+01b28023[ 	]+sb[ 	]+s11,0\(t0\)
+[ 	]+[0-9a-f]+:[ 	]+00300033[ 	]+ntl\.pall
+[ 	]+[0-9a-f]+:[ 	]+01b28123[ 	]+sb[ 	]+s11,2\(t0\)
+[ 	]+[0-9a-f]+:[ 	]+00400033[ 	]+ntl\.s1
+[ 	]+[0-9a-f]+:[ 	]+01b28223[ 	]+sb[ 	]+s11,4\(t0\)
+[ 	]+[0-9a-f]+:[ 	]+00500033[ 	]+ntl\.all
+[ 	]+[0-9a-f]+:[ 	]+01b28323[ 	]+sb[ 	]+s11,6\(t0\)

gas/testsuite/gas/riscv/zihintntl.s

@@ -0,0 +1,9 @@
+target:
+	ntl.p1
+	sb	s11, 2*0x0(t0)
+	ntl.pall
+	sb	s11, 2*0x1(t0)
+	ntl.s1
+	sb	s11, 2*0x2(t0)
+	ntl.all
+	sb	s11, 2*0x3(t0)