Support Intel MOVRS

This patch focus on supporting MOVRS ISA. We could take this full ISA
as four part: PREFETCHRST2, MOVRS, MOVRS APX_F extension and MOVRS AVX10.2
extension.

The APX_F extension for MOVRS will be:
  - EVEX.LLZ.NP.MAP4.WIG 8A !(11):rrr:bbb for r8/m8 with NF=0 and
    ND=0
  - EVEX.LLZ.NP/66.MAP4.SCALABLE 8B !(11):rrr:bbb for rv/mv with NF=0
    and ND=0

We did not merge the table together for APX_F since there is an explicit
x64 for movrs insn. The current APX_F() did not support the combination
between CPUIDs. Also, the space is different for legacy and apx_f forms.

gas/ChangeLog:

	* NEWS: Support Intel MOVRS.
	* config/tc-i386.c: Add MOVRS.
	* doc/c-i386.texi: Document .movrs.
	* testsuite/gas/i386/i386.exp: Run MOVRS tests.
	* testsuite/gas/i386/x86-64.exp: Ditto.
        * testsuite/gas/i386/x86-64-apx-evex-promoted-intel.d: Add MOVRS
	tests.
        * testsuite/gas/i386/x86-64-apx-evex-promoted-wig.d: Ditto.
        * testsuite/gas/i386/x86-64-apx-evex-promoted.d: Ditto.
        * testsuite/gas/i386/x86-64-apx-evex-promoted.s: Ditto.
	* testsuite/gas/i386/lfence-load.d: Add prefetchrst2.
	* testsuite/gas/i386/lfence-load.s: Ditto.
	* testsuite/gas/i386/nops-8.d: Ditto.
	* testsuite/gas/i386/prefetch-intel.d: Ditto.
	* testsuite/gas/i386/prefetch.d: Ditto.
	* testsuite/gas/i386/x86-64-lfence-load.d: Ditto.
	* testsuite/gas/i386/x86-64-lfence-load.s: Ditto.
	* testsuite/gas/i386/x86-64-prefetch-intel.d: Ditto.
	* testsuite/gas/i386/x86-64-prefetch.d: Ditto.
	* testsuite/gas/i386/movrs-intel.d: New test.
	* testsuite/gas/i386/movrs-inval.l: Ditto.
	* testsuite/gas/i386/movrs-inval.s: Ditto.
	* testsuite/gas/i386/movrs.d: Ditto.
	* testsuite/gas/i386/movrs.s: Ditto.
	* testsuite/gas/i386/x86-64-movrs-avx10_2-256-intel.d: Ditto.
	* testsuite/gas/i386/x86-64-movrs-avx10_2-256.d: Ditto.
	* testsuite/gas/i386/x86-64-movrs-avx10_2-256.s: Ditto.
	* testsuite/gas/i386/x86-64-movrs-avx10_2-512-intel.d: Ditto.
	* testsuite/gas/i386/x86-64-movrs-avx10_2-512.d: Ditto.
	* testsuite/gas/i386/x86-64-movrs-avx10_2-512.s: Ditto.
	* testsuite/gas/i386/x86-64-movrs-intel.d: Ditto.
	* testsuite/gas/i386/x86-64-movrs.d: Ditto.
	* testsuite/gas/i386/x86-64-movrs.s: Ditto.
	* testsuite/gas/i386/x86-64-movrs-intel-suffix.d: Ditto.
	* testsuite/gas/i386/x86-64-movrs-suffix.d: Ditto.
	* testsuite/gas/i386/x86-64-movrs-suffix.s: Ditto.

opcodes/ChangeLog:

	* i386-dis-evex-prefix.h: Add PREFIX_EVEX_MAP5_6F_X86_64.
	* i386-dis-evex-x86.h: Add X86_64_EVEX_MAP5_6F.
	* i386-dis-evex.h (evex_table): New entry for movrs.
	* i386-dis.c (MOD_0F18_REG_4): New.
	(PREFIX_EVEX_MAP5_6F_X86_64): Ditto.
	(X86_64_0F388A): Ditto.
	(X86_64_0F388B): Ditto.
	(X86_64_EVEX_MAP5_6F): Ditto.
	(three_byte_table): New entry for MOVRS.
	(reg_table): Ditto.
	(mod_table): Ditto.
	(x86_64_table): Ditto. Also include i386-dis-evex-x86.h.
	* i386-gen.c (cpu_flags): Add MOVRS.
	* i386-init.h: Regenerated.
	* i386-mnem.h: Ditto.
	* i386-opc.h (i386_cpu_flags): Add cpumovrs.
	* i386-opc.tbl: Add MOVRS instrctions.
	* i386-tbl.h: Regenerated.

Co-authored-by: Haochen Jiang <haochen.jiang@intel.com>
Co-authored-by: Lili Cui <lili.cui@intel.com>

32 files changed, 453 insertions, 8 deletions

diff --git a/gas/testsuite/gas/i386/i386.exp b/gas/testsuite/gas/i386/i386.exp
index fed9283..e6e10f0 100644
--- a/gas/testsuite/gas/i386/i386.exp
+++ b/gas/testsuite/gas/i386/i386.exp
@@ -542,6 +542,9 @@ if [gas_32_check] then {
     run_dump_test "avx10_2-512-sm4"
     run_dump_test "avx10_2-512-sm4-intel"
     run_list_test "avx10_2-sm4-inval"
+    run_dump_test "movrs"
+    run_dump_test "movrs-intel"
+    run_list_test "movrs-inval"
     run_list_test "sg"
     run_dump_test "clzero"
     run_dump_test "invlpgb"
diff --git a/gas/testsuite/gas/i386/lfence-load.d b/gas/testsuite/gas/i386/lfence-load.d
index a315be7..4bed600 100644
--- a/gas/testsuite/gas/i386/lfence-load.d
+++ b/gas/testsuite/gas/i386/lfence-load.d
@@ -33,6 +33,7 @@ Disassembly of section .text:
  +[a-f0-9]+:	0f 18 55 00          	prefetcht1 0x0\(%ebp\)
  +[a-f0-9]+:	0f 18 5d 00          	prefetcht2 0x0\(%ebp\)
  +[a-f0-9]+:	0f 0d 4d 00          	prefetchw 0x0\(%ebp\)
+ +[a-f0-9]+:	0f 18 65 00          	prefetchrst2 0x0\(%ebp\)
  +[a-f0-9]+:	1f                   	pop    %ds
  +[a-f0-9]+:	0f ae e8             	lfence
  +[a-f0-9]+:	9d                   	popf
diff --git a/gas/testsuite/gas/i386/lfence-load.s b/gas/testsuite/gas/i386/lfence-load.s
index 4b4aa16..157ee28 100644
--- a/gas/testsuite/gas/i386/lfence-load.s
+++ b/gas/testsuite/gas/i386/lfence-load.s
@@ -20,6 +20,7 @@ _start:
 	prefetcht1 (%ebp)
 	prefetcht2 (%ebp)
 	prefetchw (%ebp)
+	prefetchrst2 (%ebp)
 	pop %ds
 	popf
 	popa
diff --git a/gas/testsuite/gas/i386/movrs-intel.d b/gas/testsuite/gas/i386/movrs-intel.d
new file mode 100644
index 0000000..ae7f750
--- /dev/null
+++ b/gas/testsuite/gas/i386/movrs-intel.d
@@ -0,0 +1,15 @@
+#objdump: -dw -Mintel
+#name: i386 MOVRS insns (Intel disassembly)
+#source: movrs.s
+
+.*: +file format .*
+
+Disassembly of section \.text:
+
+#...
+[a-f0-9]+ <_intel>:
+\s*[a-f0-9]+:\s*0f 18 a4 f4 00 00 00 10\s+prefetchrst2 BYTE PTR \[esp\+esi\*8\+0x10000000\]
+\s*[a-f0-9]+:\s*0f 18 21\s+prefetchrst2 BYTE PTR \[ecx\]
+\s*[a-f0-9]+:\s*0f 18 61 7f\s+prefetchrst2 BYTE PTR \[ecx\+0x7f\]
+\s*[a-f0-9]+:\s*0f 18 62 80\s+prefetchrst2 BYTE PTR \[edx-0x80\]
+#pass
diff --git a/gas/testsuite/gas/i386/movrs-inval.l b/gas/testsuite/gas/i386/movrs-inval.l
new file mode 100644
index 0000000..43af5a1
--- /dev/null
+++ b/gas/testsuite/gas/i386/movrs-inval.l
@@ -0,0 +1,9 @@
+.* Assembler messages:
+.*:5: Error: `movrs' is only supported in 64-bit mode
+.*:6: Error: `movrs' is only supported in 64-bit mode
+.*:7: Error: `movrs' is only supported in 64-bit mode
+.*:8: Error: `movrs' is only supported in 64-bit mode
+.*:9: Error: `vmovrsb' is only supported in 64-bit mode
+.*:10: Error: `vmovrsd' is only supported in 64-bit mode
+.*:11: Error: `vmovrsq' is only supported in 64-bit mode
+.*:12: Error: `vmovrsw' is only supported in 64-bit mode
diff --git a/gas/testsuite/gas/i386/movrs-inval.s b/gas/testsuite/gas/i386/movrs-inval.s
new file mode 100644
index 0000000..9236bf3
--- /dev/null
+++ b/gas/testsuite/gas/i386/movrs-inval.s
@@ -0,0 +1,12 @@
+# Check Illegal 32bit MOVRS instructions
+
+	.text
+_start:
+	movrs	0x10000000(%esp, %esi, 8), %dx
+	movrs	0x10000000(%esp, %esi, 8), %edx
+	movrs	0x10000000(%esp, %esi, 8), %r12
+	movrs	0x10000000(%esp, %esi, 8), %bl
+	vmovrsb	0x10000000(%esp, %esi, 8), %zmm6{%k7}
+	vmovrsd	0x10000000(%esp, %esi, 8), %zmm6{%k7}
+	vmovrsq	0x10000000(%esp, %esi, 8), %zmm6{%k7}
+	vmovrsw	0x10000000(%esp, %esi, 8), %zmm6{%k7}
diff --git a/gas/testsuite/gas/i386/movrs.d b/gas/testsuite/gas/i386/movrs.d
new file mode 100644
index 0000000..5b2bb45
--- /dev/null
+++ b/gas/testsuite/gas/i386/movrs.d
@@ -0,0 +1,13 @@
+#objdump: -dw
+#name: i386 MOVRS insns
+
+.*: +file format .*
+
+Disassembly of section \.text:
+
+0+ <_start>:
+\s*[a-f0-9]+:\s*0f 18 a4 f4 00 00 00 10\s+prefetchrst2 0x10000000\(%esp,%esi,8\)
+\s*[a-f0-9]+:\s*0f 18 21\s+prefetchrst2 \(%ecx\)
+\s*[a-f0-9]+:\s*0f 18 61 7f\s+prefetchrst2 0x7f\(%ecx\)
+\s*[a-f0-9]+:\s*0f 18 62 80\s+prefetchrst2 -0x80\(%edx\)
+#pass
diff --git a/gas/testsuite/gas/i386/movrs.s b/gas/testsuite/gas/i386/movrs.s
new file mode 100644
index 0000000..e959283
--- /dev/null
+++ b/gas/testsuite/gas/i386/movrs.s
@@ -0,0 +1,15 @@
+# Check 32bit MOVRS instructions
+
+	.text
+_start:
+	prefetchrst2	0x10000000(%esp, %esi, 8)
+	prefetchrst2	(%ecx)
+	prefetchrst2	127(%ecx)
+	prefetchrst2	-128(%edx)
+
+_intel:
+	.intel_syntax noprefix
+	prefetchrst2	BYTE PTR [esp+esi*8+0x10000000]
+	prefetchrst2	BYTE PTR [ecx]
+	prefetchrst2	BYTE PTR [ecx+127]
+	prefetchrst2	BYTE PTR [edx-128]
diff --git a/gas/testsuite/gas/i386/nops-8.d b/gas/testsuite/gas/i386/nops-8.d
index 2d99ac7..d0be54d 100644
--- a/gas/testsuite/gas/i386/nops-8.d
+++ b/gas/testsuite/gas/i386/nops-8.d
@@ -74,7 +74,7 @@ Disassembly of section .text:
  +[a-f0-9]+:	0f 18 08             	prefetcht0 \(%eax\)
  +[a-f0-9]+:	0f 18 10             	prefetcht1 \(%eax\)
  +[a-f0-9]+:	0f 18 18             	prefetcht2 \(%eax\)
- +[a-f0-9]+:	0f 18 20             	nopl   \(%eax\)
+ +[a-f0-9]+:	0f 18 20             	prefetchrst2 \(%eax\)
  +[a-f0-9]+:	0f 18 28             	nopl   \(%eax\)
  +[a-f0-9]+:	0f 18 30             	nopl   \(%eax\)
  +[a-f0-9]+:	0f 18 38             	nopl   \(%eax\)
@@ -146,7 +146,7 @@ Disassembly of section .text:
  +[a-f0-9]+:	66 0f 18 08          	data16 prefetcht0 \(%eax\)
  +[a-f0-9]+:	66 0f 18 10          	data16 prefetcht1 \(%eax\)
  +[a-f0-9]+:	66 0f 18 18          	data16 prefetcht2 \(%eax\)
- +[a-f0-9]+:	66 0f 18 20          	nopw   \(%eax\)
+ +[a-f0-9]+:	66 0f 18 20          	data16 prefetchrst2 \(%eax\)
  +[a-f0-9]+:	66 0f 18 28          	nopw   \(%eax\)
  +[a-f0-9]+:	66 0f 18 30          	nopw   \(%eax\)
  +[a-f0-9]+:	66 0f 18 38          	nopw   \(%eax\)
@@ -218,7 +218,7 @@ Disassembly of section .text:
  +[a-f0-9]+:	f3 0f 18 08          	repz prefetcht0 \(%eax\)
  +[a-f0-9]+:	f3 0f 18 10          	repz prefetcht1 \(%eax\)
  +[a-f0-9]+:	f3 0f 18 18          	repz prefetcht2 \(%eax\)
- +[a-f0-9]+:	f3 0f 18 20          	repz nopl \(%eax\)
+ +[a-f0-9]+:	f3 0f 18 20          	repz prefetchrst2 \(%eax\)
  +[a-f0-9]+:	f3 0f 18 28          	repz nopl \(%eax\)
  +[a-f0-9]+:	f3 0f 18 30          	repz nopl \(%eax\)
  +[a-f0-9]+:	f3 0f 18 38          	repz nopl \(%eax\)
@@ -290,7 +290,7 @@ Disassembly of section .text:
  +[a-f0-9]+:	f2 0f 18 08          	repnz prefetcht0 \(%eax\)
  +[a-f0-9]+:	f2 0f 18 10          	repnz prefetcht1 \(%eax\)
  +[a-f0-9]+:	f2 0f 18 18          	repnz prefetcht2 \(%eax\)
- +[a-f0-9]+:	f2 0f 18 20          	repnz nopl \(%eax\)
+ +[a-f0-9]+:	f2 0f 18 20          	repnz prefetchrst2 \(%eax\)
  +[a-f0-9]+:	f2 0f 18 28          	repnz nopl \(%eax\)
  +[a-f0-9]+:	f2 0f 18 30          	repnz nopl \(%eax\)
  +[a-f0-9]+:	f2 0f 18 38          	repnz nopl \(%eax\)
diff --git a/gas/testsuite/gas/i386/prefetch-intel.d b/gas/testsuite/gas/i386/prefetch-intel.d
index ca0fd91..1a6fad1 100644
--- a/gas/testsuite/gas/i386/prefetch-intel.d
+++ b/gas/testsuite/gas/i386/prefetch-intel.d
@@ -22,7 +22,7 @@ Disassembly of section .text:
 \s*[a-f0-9]+:	0f 18 08             	prefetcht0 BYTE PTR \[eax\]
 \s*[a-f0-9]+:	0f 18 10             	prefetcht1 BYTE PTR \[eax\]
 \s*[a-f0-9]+:	0f 18 18             	prefetcht2 BYTE PTR \[eax\]
-\s*[a-f0-9]+:	0f 18 20             	nop    DWORD PTR \[eax\]
+\s*[a-f0-9]+:	0f 18 20             	prefetchrst2 BYTE PTR \[eax\]
 \s*[a-f0-9]+:	0f 18 28             	nop    DWORD PTR \[eax\]
 \s*[a-f0-9]+:	0f 18 30             	nop    DWORD PTR \[eax\]
 \s*[a-f0-9]+:	0f 18 38             	nop    DWORD PTR \[eax\]
diff --git a/gas/testsuite/gas/i386/prefetch.d b/gas/testsuite/gas/i386/prefetch.d
index 2850778..f46c141 100644
--- a/gas/testsuite/gas/i386/prefetch.d
+++ b/gas/testsuite/gas/i386/prefetch.d
@@ -21,7 +21,7 @@ Disassembly of section .text:
 \s*[a-f0-9]+:	0f 18 08             	prefetcht0 \(%eax\)
 \s*[a-f0-9]+:	0f 18 10             	prefetcht1 \(%eax\)
 \s*[a-f0-9]+:	0f 18 18             	prefetcht2 \(%eax\)
-\s*[a-f0-9]+:	0f 18 20             	nopl   \(%eax\)
+\s*[a-f0-9]+:	0f 18 20             	prefetchrst2 \(%eax\)
 \s*[a-f0-9]+:	0f 18 28             	nopl   \(%eax\)
 \s*[a-f0-9]+:	0f 18 30             	nopl   \(%eax\)
 \s*[a-f0-9]+:	0f 18 38             	nopl   \(%eax\)
diff --git a/gas/testsuite/gas/i386/x86-64-apx-evex-promoted-intel.d b/gas/testsuite/gas/i386/x86-64-apx-evex-promoted-intel.d
index d45167e..a782cd3 100644
--- a/gas/testsuite/gas/i386/x86-64-apx-evex-promoted-intel.d
+++ b/gas/testsuite/gas/i386/x86-64-apx-evex-promoted-intel.d
@@ -118,6 +118,10 @@ Disassembly of section \.text:
 [	 ]*[a-f0-9]+:[	 ]*62 4c 7d 08 f8 bc 87 23 01 00 00[	 ]+movdir64b[	 ]+r31,\[r31\+rax\*4\+0x123\]
 [	 ]*[a-f0-9]+:[	 ]*62 4c 7c 08 f9 8c 87 23 01 00 00[	 ]+movdiri[	 ]+DWORD PTR \[r31\+rax\*4\+0x123\],r25d
 [	 ]*[a-f0-9]+:[	 ]*62 4c fc 08 f9 bc 87 23 01 00 00[	 ]+movdiri[	 ]+QWORD PTR \[r31\+rax\*4\+0x123\],r31
+[	 ]*[a-f0-9]+:[	 ]*62 cc 7c 08 8a 84 87 23 01 00 00[	 ]+movrs[	 ]+r16b,BYTE PTR \[r31\+rax\*4\+0x123\]
+[	 ]*[a-f0-9]+:[	 ]*62 ec 7d 08 8b 94 80 23 01 00 00[	 ]+movrs[	 ]+r18w,WORD PTR \[r16\+rax\*4\+0x123\]
+[	 ]*[a-f0-9]+:[	 ]*62 4c 7c 08 8b 8c 87 23 01 00 00[	 ]+movrs[	 ]+r25d,DWORD PTR \[r31\+rax\*4\+0x123\]
+[	 ]*[a-f0-9]+:[	 ]*62 6c fc 08 8b bc 80 23 01 00 00[	 ]+movrs[	 ]+r31,QWORD PTR \[r16\+rax\*4\+0x123\]
 [	 ]*[a-f0-9]+:[	 ]*62 5a 6f 08 f5 d1[	 ]+pdep[	 ]+r10d,edx,r25d
 [	 ]*[a-f0-9]+:[	 ]*62 5a 87 08 f5 df[	 ]+pdep[	 ]+r11,r15,r31
 [	 ]*[a-f0-9]+:[	 ]*62 da 37 00 f5 94 87 23 01 00 00[	 ]+pdep[	 ]+edx,r25d,DWORD PTR \[r31\+rax\*4\+0x123\]
@@ -253,6 +257,10 @@ Disassembly of section \.text:
 [	 ]*[a-f0-9]+:[	 ]*62 4c 7d 08 f8 bc 87 23 01 00 00[	 ]+movdir64b[	 ]+r31,\[r31\+rax\*4\+0x123\]
 [	 ]*[a-f0-9]+:[	 ]*62 4c 7c 08 f9 8c 87 23 01 00 00[	 ]+movdiri[	 ]+DWORD PTR \[r31\+rax\*4\+0x123\],r25d
 [	 ]*[a-f0-9]+:[	 ]*62 4c fc 08 f9 bc 87 23 01 00 00[	 ]+movdiri[	 ]+QWORD PTR \[r31\+rax\*4\+0x123\],r31
+[	 ]*[a-f0-9]+:[	 ]*62 cc 7c 08 8a 84 87 23 01 00 00[	 ]+movrs[	 ]+r16b,BYTE PTR \[r31\+rax\*4\+0x123\]
+[	 ]*[a-f0-9]+:[	 ]*62 ec 7d 08 8b 94 80 23 01 00 00[	 ]+movrs[	 ]+r18w,WORD PTR \[r16\+rax\*4\+0x123\]
+[	 ]*[a-f0-9]+:[	 ]*62 4c 7c 08 8b 8c 87 23 01 00 00[	 ]+movrs[	 ]+r25d,DWORD PTR \[r31\+rax\*4\+0x123\]
+[	 ]*[a-f0-9]+:[	 ]*62 6c fc 08 8b bc 80 23 01 00 00[	 ]+movrs[	 ]+r31,QWORD PTR \[r16\+rax\*4\+0x123\]
 [	 ]*[a-f0-9]+:[	 ]*62 5a 6f 08 f5 d1[	 ]+pdep[	 ]+r10d,edx,r25d
 [	 ]*[a-f0-9]+:[	 ]*62 5a 87 08 f5 df[	 ]+pdep[	 ]+r11,r15,r31
 [	 ]*[a-f0-9]+:[	 ]*62 da 37 00 f5 94 87 23 01 00 00[	 ]+pdep[	 ]+edx,r25d,DWORD PTR \[r31\+rax\*4\+0x123\]
diff --git a/gas/testsuite/gas/i386/x86-64-apx-evex-promoted-wig.d b/gas/testsuite/gas/i386/x86-64-apx-evex-promoted-wig.d
index fa6d66b..ac98dfc 100644
--- a/gas/testsuite/gas/i386/x86-64-apx-evex-promoted-wig.d
+++ b/gas/testsuite/gas/i386/x86-64-apx-evex-promoted-wig.d
@@ -118,6 +118,10 @@ Disassembly of section \.text:
 [	 ]*[a-f0-9]+:[	 ]*62 4c .d 08 f8 bc 87 23 01 00 00[	 ]+movdir64b[	 ]+0x123\(%r31,%rax,4\),%r31
 [	 ]*[a-f0-9]+:[	 ]*62 4c 7c 08 f9 8c 87 23 01 00 00[	 ]+movdiri[	 ]+%r25d,0x123\(%r31,%rax,4\)
 [	 ]*[a-f0-9]+:[	 ]*62 4c fc 08 f9 bc 87 23 01 00 00[	 ]+movdiri[	 ]+%r31,0x123\(%r31,%rax,4\)
+[	 ]*[a-f0-9]+:[	 ]*62 cc fc 08 8a 84 87 23 01 00 00[	 ]+movrs[	 ]+0x123\(%r31,%rax,4\),%r16b
+[	 ]*[a-f0-9]+:[	 ]*62 ec 7d 08 8b 94 80 23 01 00 00[	 ]+movrs[	 ]+0x123\(%r16,%rax,4\),%r18w
+[	 ]*[a-f0-9]+:[	 ]*62 4c 7c 08 8b 8c 87 23 01 00 00[	 ]+movrs[	 ]+0x123\(%r31,%rax,4\),%r25d
+[	 ]*[a-f0-9]+:[	 ]*62 6c fc 08 8b bc 80 23 01 00 00[	 ]+movrs[	 ]+0x123\(%r16,%rax,4\),%r31
 [	 ]*[a-f0-9]+:[	 ]*62 5a 6f 08 f5 d1[	 ]+pdep[	 ]+%r25d,%edx,%r10d
 [	 ]*[a-f0-9]+:[	 ]*62 5a 87 08 f5 df[	 ]+pdep[	 ]+%r31,%r15,%r11
 [	 ]*[a-f0-9]+:[	 ]*62 da 37 00 f5 94 87 23 01 00 00[	 ]+pdep[	 ]+0x123\(%r31,%rax,4\),%r25d,%edx
@@ -253,6 +257,10 @@ Disassembly of section \.text:
 [	 ]*[a-f0-9]+:[	 ]*62 4c .d 08 f8 bc 87 23 01 00 00[	 ]+movdir64b[	 ]+0x123\(%r31,%rax,4\),%r31
 [	 ]*[a-f0-9]+:[	 ]*62 4c 7c 08 f9 8c 87 23 01 00 00[	 ]+movdiri[	 ]+%r25d,0x123\(%r31,%rax,4\)
 [	 ]*[a-f0-9]+:[	 ]*62 4c fc 08 f9 bc 87 23 01 00 00[	 ]+movdiri[	 ]+%r31,0x123\(%r31,%rax,4\)
+[	 ]*[a-f0-9]+:[	 ]*62 cc fc 08 8a 84 87 23 01 00 00[	 ]+movrs[	 ]+0x123\(%r31,%rax,4\),%r16b
+[	 ]*[a-f0-9]+:[	 ]*62 ec 7d 08 8b 94 80 23 01 00 00[	 ]+movrs[	 ]+0x123\(%r16,%rax,4\),%r18w
+[	 ]*[a-f0-9]+:[	 ]*62 4c 7c 08 8b 8c 87 23 01 00 00[	 ]+movrs[	 ]+0x123\(%r31,%rax,4\),%r25d
+[	 ]*[a-f0-9]+:[	 ]*62 6c fc 08 8b bc 80 23 01 00 00[	 ]+movrs[	 ]+0x123\(%r16,%rax,4\),%r31
 [	 ]*[a-f0-9]+:[	 ]*62 5a 6f 08 f5 d1[	 ]+pdep[	 ]+%r25d,%edx,%r10d
 [	 ]*[a-f0-9]+:[	 ]*62 5a 87 08 f5 df[	 ]+pdep[	 ]+%r31,%r15,%r11
 [	 ]*[a-f0-9]+:[	 ]*62 da 37 00 f5 94 87 23 01 00 00[	 ]+pdep[	 ]+0x123\(%r31,%rax,4\),%r25d,%edx
diff --git a/gas/testsuite/gas/i386/x86-64-apx-evex-promoted.d b/gas/testsuite/gas/i386/x86-64-apx-evex-promoted.d
index ba684c1..6aad9b3 100644
--- a/gas/testsuite/gas/i386/x86-64-apx-evex-promoted.d
+++ b/gas/testsuite/gas/i386/x86-64-apx-evex-promoted.d
@@ -118,6 +118,10 @@ Disassembly of section \.text:
 [	 ]*[a-f0-9]+:[	 ]*62 4c 7d 08 f8 bc 87 23 01 00 00[	 ]+movdir64b[	 ]+0x123\(%r31,%rax,4\),%r31
 [	 ]*[a-f0-9]+:[	 ]*62 4c 7c 08 f9 8c 87 23 01 00 00[	 ]+movdiri[	 ]+%r25d,0x123\(%r31,%rax,4\)
 [	 ]*[a-f0-9]+:[	 ]*62 4c fc 08 f9 bc 87 23 01 00 00[	 ]+movdiri[	 ]+%r31,0x123\(%r31,%rax,4\)
+[	 ]*[a-f0-9]+:[	 ]*62 cc 7c 08 8a 84 87 23 01 00 00[	 ]+movrs[	 ]+0x123\(%r31,%rax,4\),%r16b
+[	 ]*[a-f0-9]+:[	 ]*62 ec 7d 08 8b 94 80 23 01 00 00[	 ]+movrs[	 ]+0x123\(%r16,%rax,4\),%r18w
+[	 ]*[a-f0-9]+:[	 ]*62 4c 7c 08 8b 8c 87 23 01 00 00[	 ]+movrs[	 ]+0x123\(%r31,%rax,4\),%r25d
+[	 ]*[a-f0-9]+:[	 ]*62 6c fc 08 8b bc 80 23 01 00 00[	 ]+movrs[	 ]+0x123\(%r16,%rax,4\),%r31
 [	 ]*[a-f0-9]+:[	 ]*62 5a 6f 08 f5 d1[	 ]+pdep[	 ]+%r25d,%edx,%r10d
 [	 ]*[a-f0-9]+:[	 ]*62 5a 87 08 f5 df[	 ]+pdep[	 ]+%r31,%r15,%r11
 [	 ]*[a-f0-9]+:[	 ]*62 da 37 00 f5 94 87 23 01 00 00[	 ]+pdep[	 ]+0x123\(%r31,%rax,4\),%r25d,%edx
@@ -253,6 +257,10 @@ Disassembly of section \.text:
 [	 ]*[a-f0-9]+:[	 ]*62 4c 7d 08 f8 bc 87 23 01 00 00[	 ]+movdir64b[	 ]+0x123\(%r31,%rax,4\),%r31
 [	 ]*[a-f0-9]+:[	 ]*62 4c 7c 08 f9 8c 87 23 01 00 00[	 ]+movdiri[	 ]+%r25d,0x123\(%r31,%rax,4\)
 [	 ]*[a-f0-9]+:[	 ]*62 4c fc 08 f9 bc 87 23 01 00 00[	 ]+movdiri[	 ]+%r31,0x123\(%r31,%rax,4\)
+[	 ]*[a-f0-9]+:[	 ]*62 cc 7c 08 8a 84 87 23 01 00 00[	 ]+movrs[	 ]+0x123\(%r31,%rax,4\),%r16b
+[	 ]*[a-f0-9]+:[	 ]*62 ec 7d 08 8b 94 80 23 01 00 00[	 ]+movrs[	 ]+0x123\(%r16,%rax,4\),%r18w
+[	 ]*[a-f0-9]+:[	 ]*62 4c 7c 08 8b 8c 87 23 01 00 00[	 ]+movrs[	 ]+0x123\(%r31,%rax,4\),%r25d
+[	 ]*[a-f0-9]+:[	 ]*62 6c fc 08 8b bc 80 23 01 00 00[	 ]+movrs[	 ]+0x123\(%r16,%rax,4\),%r31
 [	 ]*[a-f0-9]+:[	 ]*62 5a 6f 08 f5 d1[	 ]+pdep[	 ]+%r25d,%edx,%r10d
 [	 ]*[a-f0-9]+:[	 ]*62 5a 87 08 f5 df[	 ]+pdep[	 ]+%r31,%r15,%r11
 [	 ]*[a-f0-9]+:[	 ]*62 da 37 00 f5 94 87 23 01 00 00[	 ]+pdep[	 ]+0x123\(%r31,%rax,4\),%r25d,%edx
diff --git a/gas/testsuite/gas/i386/x86-64-apx-evex-promoted.s b/gas/testsuite/gas/i386/x86-64-apx-evex-promoted.s
index 3fc9832..83bc940 100644
--- a/gas/testsuite/gas/i386/x86-64-apx-evex-promoted.s
+++ b/gas/testsuite/gas/i386/x86-64-apx-evex-promoted.s
@@ -112,6 +112,10 @@ _start:
 	movdir64b	0x123(%r31,%rax,4),%r31
 	movdiri	%r25d,0x123(%r31,%rax,4)
 	movdiri	%r31,0x123(%r31,%rax,4)
+	movrs	0x123(%r31,%rax,4),%r16b
+	movrs	0x123(%r16,%rax,4),%r18w
+	movrs	0x123(%r31,%rax,4),%r25d
+	movrs	0x123(%r16,%rax,4),%r31
 	pdep	%r25d,%edx,%r10d
 	pdep	%r31,%r15,%r11
 	pdep	0x123(%r31,%rax,4),%r25d,%edx
@@ -249,6 +253,10 @@ _start:
 	movdir64b	r31,[r31+rax*4+0x123]
 	movdiri	DWORD PTR [r31+rax*4+0x123],r25d
 	movdiri	QWORD PTR [r31+rax*4+0x123],r31
+	movrs	r16b,BYTE PTR [r31+rax*4+0x123]
+	movrs	r18w,WORD PTR [r16+rax*4+0x123]
+	movrs	r25d,DWORD PTR [r31+rax*4+0x123]
+	movrs	r31,QWORD PTR [r16+rax*4+0x123]
 	pdep	r10d,edx,r25d
 	pdep	r11,r15,r31
 	pdep	edx,r25d,DWORD PTR [r31+rax*4+0x123]
diff --git a/gas/testsuite/gas/i386/x86-64-lfence-load.d b/gas/testsuite/gas/i386/x86-64-lfence-load.d
index dcfa810..c86155e 100644
--- a/gas/testsuite/gas/i386/x86-64-lfence-load.d
+++ b/gas/testsuite/gas/i386/x86-64-lfence-load.d
@@ -35,6 +35,7 @@ Disassembly of section .text:
  +[a-f0-9]+:	0f 0d 4d 00          	prefetchw 0x0\(%rbp\)
  +[a-f0-9]+:	0f 18 3d 78 56 34 12 	prefetchit0 0x12345678\(%rip\)        # [0-9a-f]+ <_start\+0x[0-9a-f]+>
  +[a-f0-9]+:	0f 18 35 78 56 34 12 	prefetchit1 0x12345678\(%rip\)        # [0-9a-f]+ <_start\+0x[0-9a-f]+>
+ +[a-f0-9]+:	0f 18 65 00          	prefetchrst2 0x0\(%rbp\)
  +[a-f0-9]+:	0f a1                	pop    %fs
  +[a-f0-9]+:	0f ae e8             	lfence
  +[a-f0-9]+:	9d                   	popf
diff --git a/gas/testsuite/gas/i386/x86-64-lfence-load.s b/gas/testsuite/gas/i386/x86-64-lfence-load.s
index 05c07ad..e30b9a4 100644
--- a/gas/testsuite/gas/i386/x86-64-lfence-load.s
+++ b/gas/testsuite/gas/i386/x86-64-lfence-load.s
@@ -22,6 +22,7 @@ _start:
 	prefetchw (%rbp)
 	prefetchit0 0x12345678(%rip)
 	prefetchit1 0x12345678(%rip)
+	prefetchrst2 (%rbp)
 	pop %fs
 	popf
 	xlatb (%rbx)
diff --git a/gas/testsuite/gas/i386/x86-64-movrs-avx10_2-256-intel.d b/gas/testsuite/gas/i386/x86-64-movrs-avx10_2-256-intel.d
new file mode 100644
index 0000000..fbbc85f
--- /dev/null
+++ b/gas/testsuite/gas/i386/x86-64-movrs-avx10_2-256-intel.d
@@ -0,0 +1,27 @@
+#objdump: -dw -Mintel
+#name: x86_64 MOVRS, AVX10.2/256 insns (Intel disassembly)
+#source: x86-64-movrs-avx10_2-256.s
+
+.*: +file format .*
+
+Disassembly of section \.text:
+
+#...
+[a-f0-9]+ <_intel>:
+\s*[a-f0-9]+:\s*62 25 7f 0f 6f b4 f5 00 00 00 10\s+vmovrsb xmm30\{k7\},XMMWORD PTR \[rbp\+r14\*8\+0x10000000\]
+\s*[a-f0-9]+:\s*62 45 7f 08 6f 31\s+vmovrsb xmm30,XMMWORD PTR \[r9\]
+\s*[a-f0-9]+:\s*62 65 7f 08 6f 71 7f\s+vmovrsb xmm30,XMMWORD PTR \[rcx\+0x7f0\]
+\s*[a-f0-9]+:\s*62 65 7f 8f 6f 72 80\s+vmovrsb xmm30\{k7\}\{z\},XMMWORD PTR \[rdx-0x800\]
+\s*[a-f0-9]+:\s*62 25 7e 0f 6f b4 f5 00 00 00 10\s+vmovrsd xmm30\{k7\},XMMWORD PTR \[rbp\+r14\*8\+0x10000000\]
+\s*[a-f0-9]+:\s*62 45 7e 08 6f 31\s+vmovrsd xmm30,XMMWORD PTR \[r9\]
+\s*[a-f0-9]+:\s*62 65 7e 08 6f 71 7f\s+vmovrsd xmm30,XMMWORD PTR \[rcx\+0x7f0\]
+\s*[a-f0-9]+:\s*62 65 7e 8f 6f 72 80\s+vmovrsd xmm30\{k7\}\{z\},XMMWORD PTR \[rdx-0x800\]
+\s*[a-f0-9]+:\s*62 25 fe 0f 6f b4 f5 00 00 00 10\s+vmovrsq xmm30\{k7\},XMMWORD PTR \[rbp\+r14\*8\+0x10000000\]
+\s*[a-f0-9]+:\s*62 45 fe 08 6f 31\s+vmovrsq xmm30,XMMWORD PTR \[r9\]
+\s*[a-f0-9]+:\s*62 65 fe 08 6f 71 7f\s+vmovrsq xmm30,XMMWORD PTR \[rcx\+0x7f0\]
+\s*[a-f0-9]+:\s*62 65 fe 8f 6f 72 80\s+vmovrsq xmm30\{k7\}\{z\},XMMWORD PTR \[rdx-0x800\]
+\s*[a-f0-9]+:\s*62 25 ff 0f 6f b4 f5 00 00 00 10\s+vmovrsw xmm30\{k7\},XMMWORD PTR \[rbp\+r14\*8\+0x10000000\]
+\s*[a-f0-9]+:\s*62 45 ff 08 6f 31\s+vmovrsw xmm30,XMMWORD PTR \[r9\]
+\s*[a-f0-9]+:\s*62 65 ff 08 6f 71 7f\s+vmovrsw xmm30,XMMWORD PTR \[rcx\+0x7f0\]
+\s*[a-f0-9]+:\s*62 65 ff 8f 6f 72 80\s+vmovrsw xmm30\{k7\}\{z\},XMMWORD PTR \[rdx-0x800\]
+#pass
diff --git a/gas/testsuite/gas/i386/x86-64-movrs-avx10_2-256.d b/gas/testsuite/gas/i386/x86-64-movrs-avx10_2-256.d
new file mode 100644
index 0000000..68b38be
--- /dev/null
+++ b/gas/testsuite/gas/i386/x86-64-movrs-avx10_2-256.d
@@ -0,0 +1,25 @@
+#objdump: -dw
+#name: x86_64 MOVRS, AVX10.2/256 insns
+
+.*: +file format .*
+
+Disassembly of section \.text:
+
+0+ <_start>:
+\s*[a-f0-9]+:\s*62 25 7f 0f 6f b4 f5 00 00 00 10\s+vmovrsb 0x10000000\(%rbp,%r14,8\),%xmm30\{%k7\}
+\s*[a-f0-9]+:\s*62 45 7f 08 6f 31\s+vmovrsb \(%r9\),%xmm30
+\s*[a-f0-9]+:\s*62 65 7f 08 6f 71 7f\s+vmovrsb 0x7f0\(%rcx\),%xmm30
+\s*[a-f0-9]+:\s*62 65 7f 8f 6f 72 80\s+vmovrsb -0x800\(%rdx\),%xmm30\{%k7\}\{z\}
+\s*[a-f0-9]+:\s*62 25 7e 0f 6f b4 f5 00 00 00 10\s+vmovrsd 0x10000000\(%rbp,%r14,8\),%xmm30\{%k7\}
+\s*[a-f0-9]+:\s*62 45 7e 08 6f 31\s+vmovrsd \(%r9\),%xmm30
+\s*[a-f0-9]+:\s*62 65 7e 08 6f 71 7f\s+vmovrsd 0x7f0\(%rcx\),%xmm30
+\s*[a-f0-9]+:\s*62 65 7e 8f 6f 72 80\s+vmovrsd -0x800\(%rdx\),%xmm30\{%k7\}\{z\}
+\s*[a-f0-9]+:\s*62 25 fe 0f 6f b4 f5 00 00 00 10\s+vmovrsq 0x10000000\(%rbp,%r14,8\),%xmm30\{%k7\}
+\s*[a-f0-9]+:\s*62 45 fe 08 6f 31\s+vmovrsq \(%r9\),%xmm30
+\s*[a-f0-9]+:\s*62 65 fe 08 6f 71 7f\s+vmovrsq 0x7f0\(%rcx\),%xmm30
+\s*[a-f0-9]+:\s*62 65 fe 8f 6f 72 80\s+vmovrsq -0x800\(%rdx\),%xmm30\{%k7\}\{z\}
+\s*[a-f0-9]+:\s*62 25 ff 0f 6f b4 f5 00 00 00 10\s+vmovrsw 0x10000000\(%rbp,%r14,8\),%xmm30\{%k7\}
+\s*[a-f0-9]+:\s*62 45 ff 08 6f 31\s+vmovrsw \(%r9\),%xmm30
+\s*[a-f0-9]+:\s*62 65 ff 08 6f 71 7f\s+vmovrsw 0x7f0\(%rcx\),%xmm30
+\s*[a-f0-9]+:\s*62 65 ff 8f 6f 72 80\s+vmovrsw -0x800\(%rdx\),%xmm30\{%k7\}\{z\}
+#pass
diff --git a/gas/testsuite/gas/i386/x86-64-movrs-avx10_2-256.s b/gas/testsuite/gas/i386/x86-64-movrs-avx10_2-256.s
new file mode 100644
index 0000000..c699d8e
--- /dev/null
+++ b/gas/testsuite/gas/i386/x86-64-movrs-avx10_2-256.s
@@ -0,0 +1,41 @@
+# Check 64bit MOVRS, AVX10.2/256 instructions
+
+	.arch generic64
+	.arch .avx10.2/256
+	.arch .movrs
+_start:
+	vmovrsb	0x10000000(%rbp, %r14, 8), %xmm30{%k7}
+	vmovrsb	(%r9), %xmm30
+	vmovrsb	2032(%rcx), %xmm30
+	vmovrsb	-2048(%rdx), %xmm30{%k7}{z}
+	vmovrsd	0x10000000(%rbp, %r14, 8), %xmm30{%k7}
+	vmovrsd	(%r9), %xmm30
+	vmovrsd	2032(%rcx), %xmm30
+	vmovrsd	-2048(%rdx), %xmm30{%k7}{z}
+	vmovrsq	0x10000000(%rbp, %r14, 8), %xmm30{%k7}
+	vmovrsq	(%r9), %xmm30
+	vmovrsq	2032(%rcx), %xmm30
+	vmovrsq	-2048(%rdx), %xmm30{%k7}{z}
+	vmovrsw	0x10000000(%rbp, %r14, 8), %xmm30{%k7}
+	vmovrsw	(%r9), %xmm30
+	vmovrsw	2032(%rcx), %xmm30
+	vmovrsw	-2048(%rdx), %xmm30{%k7}{z}
+
+_intel:
+	.intel_syntax noprefix
+	vmovrsb	xmm30{k7}, XMMWORD PTR [rbp+r14*8+0x10000000]
+	vmovrsb	xmm30, XMMWORD PTR [r9]
+	vmovrsb	xmm30, XMMWORD PTR [rcx+2032]
+	vmovrsb	xmm30{k7}{z}, XMMWORD PTR [rdx-2048]
+	vmovrsd	xmm30{k7}, XMMWORD PTR [rbp+r14*8+0x10000000]
+	vmovrsd	xmm30, XMMWORD PTR [r9]
+	vmovrsd	xmm30, XMMWORD PTR [rcx+2032]
+	vmovrsd	xmm30{k7}{z}, XMMWORD PTR [rdx-2048]
+	vmovrsq	xmm30{k7}, XMMWORD PTR [rbp+r14*8+0x10000000]
+	vmovrsq	xmm30, XMMWORD PTR [r9]
+	vmovrsq	xmm30, XMMWORD PTR [rcx+2032]
+	vmovrsq	xmm30{k7}{z}, XMMWORD PTR [rdx-2048]
+	vmovrsw	xmm30{k7}, XMMWORD PTR [rbp+r14*8+0x10000000]
+	vmovrsw	xmm30, XMMWORD PTR [r9]
+	vmovrsw	xmm30, XMMWORD PTR [rcx+2032]
+	vmovrsw	xmm30{k7}{z}, XMMWORD PTR [rdx-2048]
diff --git a/gas/testsuite/gas/i386/x86-64-movrs-avx10_2-512-intel.d b/gas/testsuite/gas/i386/x86-64-movrs-avx10_2-512-intel.d
new file mode 100644
index 0000000..e2f5847
--- /dev/null
+++ b/gas/testsuite/gas/i386/x86-64-movrs-avx10_2-512-intel.d
@@ -0,0 +1,27 @@
+#objdump: -dw -Mintel
+#name: x86_64 MOVRS, AVX10.2/512 insns (Intel disassembly)
+#source: x86-64-movrs-avx10_2-512.s
+
+.*: +file format .*
+
+Disassembly of section \.text:
+
+#...
+[a-f0-9]+ <_intel>:
+\s*[a-f0-9]+:\s*62 25 7f 4f 6f b4 f5 00 00 00 10\s+vmovrsb zmm30\{k7\},ZMMWORD PTR \[rbp\+r14\*8\+0x10000000\]
+\s*[a-f0-9]+:\s*62 45 7f 48 6f 31\s+vmovrsb zmm30,ZMMWORD PTR \[r9\]
+\s*[a-f0-9]+:\s*62 65 7f 48 6f 71 7f\s+vmovrsb zmm30,ZMMWORD PTR \[rcx\+0x1fc0\]
+\s*[a-f0-9]+:\s*62 65 7f cf 6f 72 80\s+vmovrsb zmm30\{k7\}\{z\},ZMMWORD PTR \[rdx-0x2000\]
+\s*[a-f0-9]+:\s*62 25 7e 4f 6f b4 f5 00 00 00 10\s+vmovrsd zmm30\{k7\},ZMMWORD PTR \[rbp\+r14\*8\+0x10000000\]
+\s*[a-f0-9]+:\s*62 45 7e 48 6f 31\s+vmovrsd zmm30,ZMMWORD PTR \[r9\]
+\s*[a-f0-9]+:\s*62 65 7e 48 6f 71 7f\s+vmovrsd zmm30,ZMMWORD PTR \[rcx\+0x1fc0\]
+\s*[a-f0-9]+:\s*62 65 7e cf 6f 72 80\s+vmovrsd zmm30\{k7\}\{z\},ZMMWORD PTR \[rdx-0x2000\]
+\s*[a-f0-9]+:\s*62 25 fe 4f 6f b4 f5 00 00 00 10\s+vmovrsq zmm30\{k7\},ZMMWORD PTR \[rbp\+r14\*8\+0x10000000\]
+\s*[a-f0-9]+:\s*62 45 fe 48 6f 31\s+vmovrsq zmm30,ZMMWORD PTR \[r9\]
+\s*[a-f0-9]+:\s*62 65 fe 48 6f 71 7f\s+vmovrsq zmm30,ZMMWORD PTR \[rcx\+0x1fc0\]
+\s*[a-f0-9]+:\s*62 65 fe cf 6f 72 80\s+vmovrsq zmm30\{k7\}\{z\},ZMMWORD PTR \[rdx-0x2000\]
+\s*[a-f0-9]+:\s*62 25 ff 4f 6f b4 f5 00 00 00 10\s+vmovrsw zmm30\{k7\},ZMMWORD PTR \[rbp\+r14\*8\+0x10000000\]
+\s*[a-f0-9]+:\s*62 45 ff 48 6f 31\s+vmovrsw zmm30,ZMMWORD PTR \[r9\]
+\s*[a-f0-9]+:\s*62 65 ff 48 6f 71 7f\s+vmovrsw zmm30,ZMMWORD PTR \[rcx\+0x1fc0\]
+\s*[a-f0-9]+:\s*62 65 ff cf 6f 72 80\s+vmovrsw zmm30\{k7\}\{z\},ZMMWORD PTR \[rdx-0x2000\]
+#pass
diff --git a/gas/testsuite/gas/i386/x86-64-movrs-avx10_2-512.d b/gas/testsuite/gas/i386/x86-64-movrs-avx10_2-512.d
new file mode 100644
index 0000000..af32491
--- /dev/null
+++ b/gas/testsuite/gas/i386/x86-64-movrs-avx10_2-512.d
@@ -0,0 +1,25 @@
+#objdump: -dw
+#name: x86_64 MOVRS, AVX10.2/512 insns
+
+.*: +file format .*
+
+Disassembly of section \.text:
+
+0+ <_start>:
+\s*[a-f0-9]+:\s*62 25 7f 4f 6f b4 f5 00 00 00 10\s+vmovrsb 0x10000000\(%rbp,%r14,8\),%zmm30\{%k7\}
+\s*[a-f0-9]+:\s*62 45 7f 48 6f 31\s+vmovrsb \(%r9\),%zmm30
+\s*[a-f0-9]+:\s*62 65 7f 48 6f 71 7f\s+vmovrsb 0x1fc0\(%rcx\),%zmm30
+\s*[a-f0-9]+:\s*62 65 7f cf 6f 72 80\s+vmovrsb -0x2000\(%rdx\),%zmm30\{%k7\}\{z\}
+\s*[a-f0-9]+:\s*62 25 7e 4f 6f b4 f5 00 00 00 10\s+vmovrsd 0x10000000\(%rbp,%r14,8\),%zmm30\{%k7\}
+\s*[a-f0-9]+:\s*62 45 7e 48 6f 31\s+vmovrsd \(%r9\),%zmm30
+\s*[a-f0-9]+:\s*62 65 7e 48 6f 71 7f\s+vmovrsd 0x1fc0\(%rcx\),%zmm30
+\s*[a-f0-9]+:\s*62 65 7e cf 6f 72 80\s+vmovrsd -0x2000\(%rdx\),%zmm30\{%k7\}\{z\}
+\s*[a-f0-9]+:\s*62 25 fe 4f 6f b4 f5 00 00 00 10\s+vmovrsq 0x10000000\(%rbp,%r14,8\),%zmm30\{%k7\}
+\s*[a-f0-9]+:\s*62 45 fe 48 6f 31\s+vmovrsq \(%r9\),%zmm30
+\s*[a-f0-9]+:\s*62 65 fe 48 6f 71 7f\s+vmovrsq 0x1fc0\(%rcx\),%zmm30
+\s*[a-f0-9]+:\s*62 65 fe cf 6f 72 80\s+vmovrsq -0x2000\(%rdx\),%zmm30\{%k7\}\{z\}
+\s*[a-f0-9]+:\s*62 25 ff 4f 6f b4 f5 00 00 00 10\s+vmovrsw 0x10000000\(%rbp,%r14,8\),%zmm30\{%k7\}
+\s*[a-f0-9]+:\s*62 45 ff 48 6f 31\s+vmovrsw \(%r9\),%zmm30
+\s*[a-f0-9]+:\s*62 65 ff 48 6f 71 7f\s+vmovrsw 0x1fc0\(%rcx\),%zmm30
+\s*[a-f0-9]+:\s*62 65 ff cf 6f 72 80\s+vmovrsw -0x2000\(%rdx\),%zmm30\{%k7\}\{z\}
+#pass
diff --git a/gas/testsuite/gas/i386/x86-64-movrs-avx10_2-512.s b/gas/testsuite/gas/i386/x86-64-movrs-avx10_2-512.s
new file mode 100644
index 0000000..5caaf4f
--- /dev/null
+++ b/gas/testsuite/gas/i386/x86-64-movrs-avx10_2-512.s
@@ -0,0 +1,41 @@
+# Check 64bit MOVRS, AVX10.2/512 instructions
+
+	.arch generic64
+	.arch .avx10.2/512
+	.arch .movrs
+_start:
+	vmovrsb	0x10000000(%rbp, %r14, 8), %zmm30{%k7}
+	vmovrsb	(%r9), %zmm30
+	vmovrsb	8128(%rcx), %zmm30
+	vmovrsb	-8192(%rdx), %zmm30{%k7}{z}
+	vmovrsd	0x10000000(%rbp, %r14, 8), %zmm30{%k7}
+	vmovrsd	(%r9), %zmm30
+	vmovrsd	8128(%rcx), %zmm30
+	vmovrsd	-8192(%rdx), %zmm30{%k7}{z}
+	vmovrsq	0x10000000(%rbp, %r14, 8), %zmm30{%k7}
+	vmovrsq	(%r9), %zmm30
+	vmovrsq	8128(%rcx), %zmm30
+	vmovrsq	-8192(%rdx), %zmm30{%k7}{z}
+	vmovrsw	0x10000000(%rbp, %r14, 8), %zmm30{%k7}
+	vmovrsw	(%r9), %zmm30
+	vmovrsw	8128(%rcx), %zmm30
+	vmovrsw	-8192(%rdx), %zmm30{%k7}{z}
+
+_intel:
+	.intel_syntax noprefix
+	vmovrsb	zmm30{k7}, ZMMWORD PTR [rbp+r14*8+0x10000000]
+	vmovrsb	zmm30, ZMMWORD PTR [r9]
+	vmovrsb	zmm30, ZMMWORD PTR [rcx+8128]
+	vmovrsb	zmm30{k7}{z}, ZMMWORD PTR [rdx-8192]
+	vmovrsd	zmm30{k7}, ZMMWORD PTR [rbp+r14*8+0x10000000]
+	vmovrsd	zmm30, ZMMWORD PTR [r9]
+	vmovrsd	zmm30, ZMMWORD PTR [rcx+8128]
+	vmovrsd	zmm30{k7}{z}, ZMMWORD PTR [rdx-8192]
+	vmovrsq	zmm30{k7}, ZMMWORD PTR [rbp+r14*8+0x10000000]
+	vmovrsq	zmm30, ZMMWORD PTR [r9]
+	vmovrsq	zmm30, ZMMWORD PTR [rcx+8128]
+	vmovrsq	zmm30{k7}{z}, ZMMWORD PTR [rdx-8192]
+	vmovrsw	zmm30{k7}, ZMMWORD PTR [rbp+r14*8+0x10000000]
+	vmovrsw	zmm30, ZMMWORD PTR [r9]
+	vmovrsw	zmm30, ZMMWORD PTR [rcx+8128]
+	vmovrsw	zmm30{k7}{z}, ZMMWORD PTR [rdx-8192]
diff --git a/gas/testsuite/gas/i386/x86-64-movrs-intel.d b/gas/testsuite/gas/i386/x86-64-movrs-intel.d
new file mode 100644
index 0000000..145644f
--- /dev/null
+++ b/gas/testsuite/gas/i386/x86-64-movrs-intel.d
@@ -0,0 +1,31 @@
+#objdump: -dw -Mintel
+#name: x86_64 MOVRS insns (Intel disassembly)
+#source: x86-64-movrs.s
+
+.*: +file format .*
+
+Disassembly of section \.text:
+
+#...
+[a-f0-9]+ <_intel>:
+\s*[a-f0-9]+:\s*66 42 0f 38 8b 94 f5 00 00 00 10\s+movrs  dx,WORD PTR \[rbp\+r14\*8\+0x10000000\]
+\s*[a-f0-9]+:\s*66 41 0f 38 8b 11\s+movrs  dx,WORD PTR \[r9\]
+\s*[a-f0-9]+:\s*66 0f 38 8b 91 fe 00 00 00\s+movrs  dx,WORD PTR \[rcx\+0xfe\]
+\s*[a-f0-9]+:\s*66 0f 38 8b 92 00 ff ff ff\s+movrs  dx,WORD PTR \[rdx-0x100\]
+\s*[a-f0-9]+:\s*42 0f 38 8b 94 f5 00 00 00 10\s+movrs  edx,DWORD PTR \[rbp\+r14\*8\+0x10000000\]
+\s*[a-f0-9]+:\s*41 0f 38 8b 11\s+movrs  edx,DWORD PTR \[r9\]
+\s*[a-f0-9]+:\s*0f 38 8b 91 fc 01 00 00\s+movrs  edx,DWORD PTR \[rcx\+0x1fc\]
+\s*[a-f0-9]+:\s*0f 38 8b 92 00 fe ff ff\s+movrs  edx,DWORD PTR \[rdx-0x200\]
+\s*[a-f0-9]+:\s*4e 0f 38 8b a4 f5 00 00 00 10\s+movrs  r12,QWORD PTR \[rbp\+r14\*8\+0x10000000\]
+\s*[a-f0-9]+:\s*4d 0f 38 8b 21\s+movrs  r12,QWORD PTR \[r9\]
+\s*[a-f0-9]+:\s*4c 0f 38 8b a1 f8 03 00 00\s+movrs  r12,QWORD PTR \[rcx\+0x3f8\]
+\s*[a-f0-9]+:\s*4c 0f 38 8b a2 00 fc ff ff\s+movrs  r12,QWORD PTR \[rdx-0x400\]
+\s*[a-f0-9]+:\s*42 0f 38 8a 9c f5 00 00 00 10\s+movrs  bl,BYTE PTR \[rbp\+r14\*8\+0x10000000\]
+\s*[a-f0-9]+:\s*41 0f 38 8a 19\s+movrs  bl,BYTE PTR \[r9\]
+\s*[a-f0-9]+:\s*0f 38 8a 59 7f\s+movrs  bl,BYTE PTR \[rcx\+0x7f\]
+\s*[a-f0-9]+:\s*0f 38 8a 5a 80\s+movrs  bl,BYTE PTR \[rdx-0x80\]
+\s*[a-f0-9]+:\s*42 0f 18 a4 f5 00 00 00 10\s+prefetchrst2 BYTE PTR \[rbp\+r14\*8\+0x10000000\]
+\s*[a-f0-9]+:\s*41 0f 18 21\s+prefetchrst2 BYTE PTR \[r9\]
+\s*[a-f0-9]+:\s*0f 18 61 7f\s+prefetchrst2 BYTE PTR \[rcx\+0x7f\]
+\s*[a-f0-9]+:\s*0f 18 62 80\s+prefetchrst2 BYTE PTR \[rdx-0x80\]
+#pass
diff --git a/gas/testsuite/gas/i386/x86-64-movrs-suffix-intel.d b/gas/testsuite/gas/i386/x86-64-movrs-suffix-intel.d
new file mode 100644
index 0000000..b1dcb2d
--- /dev/null
+++ b/gas/testsuite/gas/i386/x86-64-movrs-suffix-intel.d
@@ -0,0 +1,15 @@
+#objdump: -dwMsuffix -Mintel
+#name: x86_64 MOVRS insns
+#source: x86-64-movrs-suffix.s
+
+.*: +file format .*
+
+Disassembly of section \.text:
+
+#...
+[a-f0-9]+ <_intel>:
+\s*[a-f0-9]+:\s*66 0f 38 8b 92 00 ff ff ff\s+movrsw -0x100\(%rdx\),%dx
+\s*[a-f0-9]+:\s*0f 38 8b 92 00 fe ff ff\s+movrsl -0x200\(%rdx\),%edx
+\s*[a-f0-9]+:\s*4c 0f 38 8b a2 00 fc ff ff\s+movrsq -0x400\(%rdx\),%r12
+\s*[a-f0-9]+:\s*0f 38 8a 5a 80\s+movrsb -0x80\(%rdx\),%bl
+#pass
diff --git a/gas/testsuite/gas/i386/x86-64-movrs-suffix.d b/gas/testsuite/gas/i386/x86-64-movrs-suffix.d
new file mode 100644
index 0000000..7f71b1d
--- /dev/null
+++ b/gas/testsuite/gas/i386/x86-64-movrs-suffix.d
@@ -0,0 +1,13 @@
+#objdump: -dwMsuffix
+#name: x86_64 MOVRS insns
+
+.*: +file format .*
+
+Disassembly of section \.text:
+
+0+ <_start>:
+\s*[a-f0-9]+:\s*66 0f 38 8b 92 00 ff ff ff\s+movrsw -0x100\(%rdx\),%dx
+\s*[a-f0-9]+:\s*0f 38 8b 92 00 fe ff ff\s+movrsl -0x200\(%rdx\),%edx
+\s*[a-f0-9]+:\s*4c 0f 38 8b a2 00 fc ff ff\s+movrsq -0x400\(%rdx\),%r12
+\s*[a-f0-9]+:\s*0f 38 8a 5a 80\s+movrsb -0x80\(%rdx\),%bl
+#pass
diff --git a/gas/testsuite/gas/i386/x86-64-movrs-suffix.s b/gas/testsuite/gas/i386/x86-64-movrs-suffix.s
new file mode 100644
index 0000000..6120b76
--- /dev/null
+++ b/gas/testsuite/gas/i386/x86-64-movrs-suffix.s
@@ -0,0 +1,15 @@
+# Check 64bit MOVRS instructions
+
+	.text
+_start:
+	movrsw	-256(%rdx), %dx
+	movrsl	-512(%rdx), %edx
+	movrsq	-1024(%rdx), %r12
+	movrsb	-128(%rdx), %bl
+
+_intel:
+	.intel_syntax noprefix
+	movrsw	dx, WORD PTR [rdx-256]
+	movrsl	edx, DWORD PTR [rdx-512]
+	movrsq	r12, QWORD PTR [rdx-1024]
+	movrsb	bl, BYTE PTR [rdx-128]
diff --git a/gas/testsuite/gas/i386/x86-64-movrs.d b/gas/testsuite/gas/i386/x86-64-movrs.d
new file mode 100644
index 0000000..b5d48cd
--- /dev/null
+++ b/gas/testsuite/gas/i386/x86-64-movrs.d
@@ -0,0 +1,29 @@
+#objdump: -dw
+#name: x86_64 MOVRS insns
+
+.*: +file format .*
+
+Disassembly of section \.text:
+
+0+ <_start>:
+\s*[a-f0-9]+:\s*66 42 0f 38 8b 94 f5 00 00 00 10\s+movrs  0x10000000\(%rbp,%r14,8\),%dx
+\s*[a-f0-9]+:\s*66 41 0f 38 8b 11\s+movrs  \(%r9\),%dx
+\s*[a-f0-9]+:\s*66 0f 38 8b 91 fe 00 00 00\s+movrs  0xfe\(%rcx\),%dx
+\s*[a-f0-9]+:\s*66 0f 38 8b 92 00 ff ff ff\s+movrs  -0x100\(%rdx\),%dx
+\s*[a-f0-9]+:\s*42 0f 38 8b 94 f5 00 00 00 10\s+movrs  0x10000000\(%rbp,%r14,8\),%edx
+\s*[a-f0-9]+:\s*41 0f 38 8b 11\s+movrs  \(%r9\),%edx
+\s*[a-f0-9]+:\s*0f 38 8b 91 fc 01 00 00\s+movrs  0x1fc\(%rcx\),%edx
+\s*[a-f0-9]+:\s*0f 38 8b 92 00 fe ff ff\s+movrs  -0x200\(%rdx\),%edx
+\s*[a-f0-9]+:\s*4e 0f 38 8b a4 f5 00 00 00 10\s+movrs  0x10000000\(%rbp,%r14,8\),%r12
+\s*[a-f0-9]+:\s*4d 0f 38 8b 21\s+movrs  \(%r9\),%r12
+\s*[a-f0-9]+:\s*4c 0f 38 8b a1 f8 03 00 00\s+movrs  0x3f8\(%rcx\),%r12
+\s*[a-f0-9]+:\s*4c 0f 38 8b a2 00 fc ff ff\s+movrs  -0x400\(%rdx\),%r12
+\s*[a-f0-9]+:\s*42 0f 38 8a 9c f5 00 00 00 10\s+movrs  0x10000000\(%rbp,%r14,8\),%bl
+\s*[a-f0-9]+:\s*41 0f 38 8a 19\s+movrs  \(%r9\),%bl
+\s*[a-f0-9]+:\s*0f 38 8a 59 7f\s+movrs  0x7f\(%rcx\),%bl
+\s*[a-f0-9]+:\s*0f 38 8a 5a 80\s+movrs  -0x80\(%rdx\),%bl
+\s*[a-f0-9]+:\s*42 0f 18 a4 f5 00 00 00 10\s+prefetchrst2 0x10000000\(%rbp,%r14,8\)
+\s*[a-f0-9]+:\s*41 0f 18 21\s+prefetchrst2 \(%r9\)
+\s*[a-f0-9]+:\s*0f 18 61 7f\s+prefetchrst2 0x7f\(%rcx\)
+\s*[a-f0-9]+:\s*0f 18 62 80\s+prefetchrst2 -0x80\(%rdx\)
+#pass
diff --git a/gas/testsuite/gas/i386/x86-64-movrs.s b/gas/testsuite/gas/i386/x86-64-movrs.s
new file mode 100644
index 0000000..e15269a
--- /dev/null
+++ b/gas/testsuite/gas/i386/x86-64-movrs.s
@@ -0,0 +1,47 @@
+# Check 64bit MOVRS instructions
+
+	.text
+_start:
+	movrs	0x10000000(%rbp, %r14, 8), %dx
+	movrs	(%r9), %dx
+	movrs	254(%rcx), %dx
+	movrs	-256(%rdx), %dx
+	movrs	0x10000000(%rbp, %r14, 8), %edx
+	movrs	(%r9), %edx
+	movrs	508(%rcx), %edx
+	movrs	-512(%rdx), %edx
+	movrs	0x10000000(%rbp, %r14, 8), %r12
+	movrs	(%r9), %r12
+	movrs	1016(%rcx), %r12
+	movrs	-1024(%rdx), %r12
+	movrs	0x10000000(%rbp, %r14, 8), %bl
+	movrs	(%r9), %bl
+	movrs	127(%rcx), %bl
+	movrs	-128(%rdx), %bl
+	prefetchrst2	0x10000000(%rbp, %r14, 8)
+	prefetchrst2	(%r9)
+	prefetchrst2	127(%rcx)
+	prefetchrst2	-128(%rdx)
+
+_intel:
+	.intel_syntax noprefix
+	movrs	dx, WORD PTR [rbp+r14*8+0x10000000]
+	movrs	dx, WORD PTR [r9]
+	movrs	dx, WORD PTR [rcx+254]
+	movrs	dx, WORD PTR [rdx-256]
+	movrs	edx, DWORD PTR [rbp+r14*8+0x10000000]
+	movrs	edx, DWORD PTR [r9]
+	movrs	edx, DWORD PTR [rcx+508]
+	movrs	edx, DWORD PTR [rdx-512]
+	movrs	r12, QWORD PTR [rbp+r14*8+0x10000000]
+	movrs	r12, QWORD PTR [r9]
+	movrs	r12, QWORD PTR [rcx+1016]
+	movrs	r12, QWORD PTR [rdx-1024]
+	movrs	bl, BYTE PTR [rbp+r14*8+0x10000000]
+	movrs	bl, BYTE PTR [r9]
+	movrs	bl, BYTE PTR [rcx+127]
+	movrs	bl, BYTE PTR [rdx-128]
+	prefetchrst2	BYTE PTR [rbp+r14*8+0x10000000]
+	prefetchrst2	BYTE PTR [r9]
+	prefetchrst2	BYTE PTR [rcx+127]
+	prefetchrst2	BYTE PTR [rdx-128]
diff --git a/gas/testsuite/gas/i386/x86-64-prefetch-intel.d b/gas/testsuite/gas/i386/x86-64-prefetch-intel.d
index b0f9556..29c5253 100644
--- a/gas/testsuite/gas/i386/x86-64-prefetch-intel.d
+++ b/gas/testsuite/gas/i386/x86-64-prefetch-intel.d
@@ -22,7 +22,7 @@ Disassembly of section .text:
 \s*[a-f0-9]+:	0f 18 08             	prefetcht0 BYTE PTR \[rax\]
 \s*[a-f0-9]+:	0f 18 10             	prefetcht1 BYTE PTR \[rax\]
 \s*[a-f0-9]+:	0f 18 18             	prefetcht2 BYTE PTR \[rax\]
-\s*[a-f0-9]+:	0f 18 20             	nop    DWORD PTR \[rax\]
+\s*[a-f0-9]+:	0f 18 20             	prefetchrst2 BYTE PTR \[rax\]
 \s*[a-f0-9]+:	0f 18 28             	nop    DWORD PTR \[rax\]
 \s*[a-f0-9]+:	0f 18 30             	nop    DWORD PTR \[rax\]
 \s*[a-f0-9]+:	0f 18 38             	nop    DWORD PTR \[rax\]
diff --git a/gas/testsuite/gas/i386/x86-64-prefetch.d b/gas/testsuite/gas/i386/x86-64-prefetch.d
index 3e83ef5..18205c2 100644
--- a/gas/testsuite/gas/i386/x86-64-prefetch.d
+++ b/gas/testsuite/gas/i386/x86-64-prefetch.d
@@ -22,7 +22,7 @@ Disassembly of section .text:
 \s*[a-f0-9]+:	0f 18 08             	prefetcht0 \(%rax\)
 \s*[a-f0-9]+:	0f 18 10             	prefetcht1 \(%rax\)
 \s*[a-f0-9]+:	0f 18 18             	prefetcht2 \(%rax\)
-\s*[a-f0-9]+:	0f 18 20             	nopl   \(%rax\)
+\s*[a-f0-9]+:	0f 18 20             	prefetchrst2 \(%rax\)
 \s*[a-f0-9]+:	0f 18 28             	nopl   \(%rax\)
 \s*[a-f0-9]+:	0f 18 30             	nopl   \(%rax\)
 \s*[a-f0-9]+:	0f 18 38             	nopl   \(%rax\)
diff --git a/gas/testsuite/gas/i386/x86-64.exp b/gas/testsuite/gas/i386/x86-64.exp
index fe50367..265bd0b 100644
--- a/gas/testsuite/gas/i386/x86-64.exp
+++ b/gas/testsuite/gas/i386/x86-64.exp
@@ -535,6 +535,12 @@ run_dump_test "x86-64-amx-fp8"
 run_dump_test "x86-64-amx-fp8-intel"
 run_list_test "x86-64-amx-fp8-inval"
 run_dump_test "x86-64-amx-fp8-bad"
+run_dump_test "x86-64-movrs"
+run_dump_test "x86-64-movrs-intel"
+run_dump_test "x86-64-movrs-avx10_2-512"
+run_dump_test "x86-64-movrs-avx10_2-512-intel"
+run_dump_test "x86-64-movrs-avx10_2-256"
+run_dump_test "x86-64-movrs-avx10_2-256-intel"
 run_dump_test "x86-64-clzero"
 run_dump_test "x86-64-mwaitx-bdver4"
 run_list_test "x86-64-mwaitx-reg"