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authorIlya Tocar <ilya.tocar@intel.com>2014-02-20 18:57:31 +0400
committerH.J. Lu <hjl.tools@gmail.com>2014-02-21 08:04:00 -0800
commitdcf893b581c440902d68a0095967acd4ae7ae8d1 (patch)
tree4f44b0338da07d63a27f096704c2d7acbd911cf8 /gas/testsuite
parentc63528fc47c79721b55f32fe1649762ff9125ae0 (diff)
downloadgdb-dcf893b581c440902d68a0095967acd4ae7ae8d1.zip
gdb-dcf893b581c440902d68a0095967acd4ae7ae8d1.tar.gz
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Add support for CPUID PREFETCHWT1
Latest AVX512 spec http://download-software.intel.com/sites/default/files/managed/50/1a/319433-018.pdf Has CPUID PREFETCHWT1 for prefetchwt1 instruction, which we list as AVX512PF. This patch introduces CPUID PREFETCHWT1. gas/ * config/tc-i386.c (cpu_arch): Add .prefetchwt1. * doc/c-i386.texi: Document .prefetchwt1/prefetchwt1. opcodes/ * i386-gen.c (cpu_flag_init): Add CPU_PREFETCHWT1_FLAGS/ (cpu_flags): Add CpuPREFETCHWT1. * i386-init.h: Regenerate. * i386-opc.h (CpuPREFETCHWT1): New. (i386_cpu_flags): Add cpuprefetchwt1. * i386-opc.tbl: Cahnge CPU of prefetchwt1 from CpuAVX512PF to CpuPREFETCHWT1. * i386-tbl.h: Regenerate. gas/testsuite * gas/i386/avx512pf-intel.d: Remove prefetchwt1. * gas/i386/avx512pf.s: Ditto. * gas/i386/avx512pf.d: Ditto. * gas/i386/x86-64-avx512pf-intel.d: Ditto. * gas/i386/x86-64-avx512pf.s: Ditto. * gas/i386/x86-64-avx512pf.d: Ditto. * gas/i386/prefetchwt1-intel.d: New file. * gas/i386/prefetchwt1.s: Ditto. * gas/i386/prefetchwt1.d: Ditto. * gas/i386/x86-64-prefetchwt1-intel.d: Ditto. * gas/i386/x86-64-prefetchwt1.s: Ditto. * gas/i386/x86-64-prefetchwt1.d: Ditto.
Diffstat (limited to 'gas/testsuite')
-rw-r--r--gas/testsuite/ChangeLog15
-rw-r--r--gas/testsuite/gas/i386/avx512pf-intel.d4
-rw-r--r--gas/testsuite/gas/i386/avx512pf.d4
-rw-r--r--gas/testsuite/gas/i386/avx512pf.s6
-rw-r--r--gas/testsuite/gas/i386/i386.exp4
-rw-r--r--gas/testsuite/gas/i386/prefetchwt1-intel.d16
-rw-r--r--gas/testsuite/gas/i386/prefetchwt1.d15
-rw-r--r--gas/testsuite/gas/i386/prefetchwt1.s13
-rw-r--r--gas/testsuite/gas/i386/x86-64-avx512pf-intel.d4
-rw-r--r--gas/testsuite/gas/i386/x86-64-avx512pf.d4
-rw-r--r--gas/testsuite/gas/i386/x86-64-avx512pf.s6
-rw-r--r--gas/testsuite/gas/i386/x86-64-prefetchwt1-intel.d16
-rw-r--r--gas/testsuite/gas/i386/x86-64-prefetchwt1.d15
-rw-r--r--gas/testsuite/gas/i386/x86-64-prefetchwt1.s13
14 files changed, 107 insertions, 28 deletions
diff --git a/gas/testsuite/ChangeLog b/gas/testsuite/ChangeLog
index a867e44..c32ec63 100644
--- a/gas/testsuite/ChangeLog
+++ b/gas/testsuite/ChangeLog
@@ -1,3 +1,18 @@
+2014-02-21 Ilya Tocar <ilya.tocar@intel.com>
+
+ * gas/i386/avx512pf-intel.d: Remove prefetchwt1.
+ * gas/i386/avx512pf.s: Ditto.
+ * gas/i386/avx512pf.d: Ditto.
+ * gas/i386/x86-64-avx512pf-intel.d: Ditto.
+ * gas/i386/x86-64-avx512pf.s: Ditto.
+ * gas/i386/x86-64-avx512pf.d: Ditto.
+ * gas/i386/prefetchwt1-intel.d: New file.
+ * gas/i386/prefetchwt1.s: Ditto.
+ * gas/i386/prefetchwt1.d: Ditto.
+ * gas/i386/x86-64-prefetchwt1-intel.d: Ditto.
+ * gas/i386/x86-64-prefetchwt1.s: Ditto.
+ * gas/i386/x86-64-prefetchwt1.d: Ditto.
+
2014-02-20 Ilya Tocar <ilya.tocar@intel.com>
* gas/i386/avx512cd-intel.d: Remove vptestnmq, vptestnmd.
diff --git a/gas/testsuite/gas/i386/avx512pf-intel.d b/gas/testsuite/gas/i386/avx512pf-intel.d
index 126792f..05012dc 100644
--- a/gas/testsuite/gas/i386/avx512pf-intel.d
+++ b/gas/testsuite/gas/i386/avx512pf-intel.d
@@ -73,8 +73,6 @@ Disassembly of section .text:
[ ]*[a-f0-9]+: 62 f2 7d 49 c7 b4 fd 7b 00 00 00 vscatterpf1qps ZMMWORD PTR \[ebp\+zmm7\*8\+0x7b\]\{k1\}
[ ]*[a-f0-9]+: 62 f2 7d 49 c7 74 38 40 vscatterpf1qps ZMMWORD PTR \[eax\+zmm7\*1\+0x100\]\{k1\}
[ ]*[a-f0-9]+: 62 f2 7d 49 c7 b4 b9 00 04 00 00 vscatterpf1qps ZMMWORD PTR \[ecx\+zmm7\*4\+0x400\]\{k1\}
-[ ]*[a-f0-9]+: 0f 0d 11 prefetchwt1 BYTE PTR \[ecx\]
-[ ]*[a-f0-9]+: 0f 0d 94 f4 c0 1d fe ff prefetchwt1 BYTE PTR \[esp\+esi\*8-0x1e240\]
[ ]*[a-f0-9]+: 62 f2 fd 49 c6 8c fd 85 ff ff ff vgatherpf0dpd ZMMWORD PTR \[ebp\+ymm7\*8-0x7b\]\{k1\}
[ ]*[a-f0-9]+: 62 f2 fd 49 c6 8c fd 85 ff ff ff vgatherpf0dpd ZMMWORD PTR \[ebp\+ymm7\*8-0x7b\]\{k1\}
[ ]*[a-f0-9]+: 62 f2 fd 49 c6 4c 38 20 vgatherpf0dpd ZMMWORD PTR \[eax\+ymm7\*1\+0x100\]\{k1\}
@@ -139,6 +137,4 @@ Disassembly of section .text:
[ ]*[a-f0-9]+: 62 f2 7d 49 c7 b4 fd 85 ff ff ff vscatterpf1qps ZMMWORD PTR \[ebp\+zmm7\*8-0x7b\]\{k1\}
[ ]*[a-f0-9]+: 62 f2 7d 49 c7 74 38 40 vscatterpf1qps ZMMWORD PTR \[eax\+zmm7\*1\+0x100\]\{k1\}
[ ]*[a-f0-9]+: 62 f2 7d 49 c7 b4 b9 00 04 00 00 vscatterpf1qps ZMMWORD PTR \[ecx\+zmm7\*4\+0x400\]\{k1\}
-[ ]*[a-f0-9]+: 0f 0d 11 prefetchwt1 BYTE PTR \[ecx\]
-[ ]*[a-f0-9]+: 0f 0d 94 f4 c0 1d fe ff prefetchwt1 BYTE PTR \[esp\+esi\*8-0x1e240\]
#pass
diff --git a/gas/testsuite/gas/i386/avx512pf.d b/gas/testsuite/gas/i386/avx512pf.d
index cff3f48..16a4e4f 100644
--- a/gas/testsuite/gas/i386/avx512pf.d
+++ b/gas/testsuite/gas/i386/avx512pf.d
@@ -72,8 +72,6 @@ Disassembly of section .text:
[ ]*[a-f0-9]+: 62 f2 7d 49 c7 b4 fd 7b 00 00 00 vscatterpf1qps 0x7b\(%ebp,%zmm7,8\)\{%k1\}
[ ]*[a-f0-9]+: 62 f2 7d 49 c7 74 38 40 vscatterpf1qps 0x100\(%eax,%zmm7,1\)\{%k1\}
[ ]*[a-f0-9]+: 62 f2 7d 49 c7 b4 b9 00 04 00 00 vscatterpf1qps 0x400\(%ecx,%zmm7,4\)\{%k1\}
-[ ]*[a-f0-9]+: 0f 0d 11 prefetchwt1 \(%ecx\)
-[ ]*[a-f0-9]+: 0f 0d 94 f4 c0 1d fe ff prefetchwt1 -0x1e240\(%esp,%esi,8\)
[ ]*[a-f0-9]+: 62 f2 fd 49 c6 8c fd 85 ff ff ff vgatherpf0dpd -0x7b\(%ebp,%ymm7,8\)\{%k1\}
[ ]*[a-f0-9]+: 62 f2 fd 49 c6 8c fd 85 ff ff ff vgatherpf0dpd -0x7b\(%ebp,%ymm7,8\)\{%k1\}
[ ]*[a-f0-9]+: 62 f2 fd 49 c6 4c 38 20 vgatherpf0dpd 0x100\(%eax,%ymm7,1\)\{%k1\}
@@ -138,6 +136,4 @@ Disassembly of section .text:
[ ]*[a-f0-9]+: 62 f2 7d 49 c7 b4 fd 85 ff ff ff vscatterpf1qps -0x7b\(%ebp,%zmm7,8\)\{%k1\}
[ ]*[a-f0-9]+: 62 f2 7d 49 c7 74 38 40 vscatterpf1qps 0x100\(%eax,%zmm7,1\)\{%k1\}
[ ]*[a-f0-9]+: 62 f2 7d 49 c7 b4 b9 00 04 00 00 vscatterpf1qps 0x400\(%ecx,%zmm7,4\)\{%k1\}
-[ ]*[a-f0-9]+: 0f 0d 11 prefetchwt1 \(%ecx\)
-[ ]*[a-f0-9]+: 0f 0d 94 f4 c0 1d fe ff prefetchwt1 -0x1e240\(%esp,%esi,8\)
#pass
diff --git a/gas/testsuite/gas/i386/avx512pf.s b/gas/testsuite/gas/i386/avx512pf.s
index 301e984..fc6880a 100644
--- a/gas/testsuite/gas/i386/avx512pf.s
+++ b/gas/testsuite/gas/i386/avx512pf.s
@@ -84,9 +84,6 @@ _start:
vscatterpf1qps 256(%eax,%zmm7){%k1} # AVX512PF
vscatterpf1qps 1024(%ecx,%zmm7,4){%k1} # AVX512PF
- prefetchwt1 (%ecx) # AVX512PF
- prefetchwt1 -123456(%esp,%esi,8) # AVX512PF
-
.intel_syntax noprefix
vgatherpf0dpd ZMMWORD PTR [ebp+ymm7*8-123]{k1} # AVX512PF
vgatherpf0dpd ZMMWORD PTR [ebp+ymm7*8-123]{k1} # AVX512PF
@@ -168,6 +165,3 @@ _start:
vscatterpf1qps ZMMWORD PTR [eax+zmm7+256]{k1} # AVX512PF
vscatterpf1qps ZMMWORD PTR [ecx+zmm7*4+1024]{k1} # AVX512PF
- prefetchwt1 BYTE PTR [ecx] # AVX512PF
- prefetchwt1 BYTE PTR [esp+esi*8-123456] # AVX512PF
-
diff --git a/gas/testsuite/gas/i386/i386.exp b/gas/testsuite/gas/i386/i386.exp
index 8132d0d..257c14d 100644
--- a/gas/testsuite/gas/i386/i386.exp
+++ b/gas/testsuite/gas/i386/i386.exp
@@ -275,6 +275,8 @@ if [expr ([istarget "i*86-*-*"] || [istarget "x86_64-*-*"]) && [gas_32_check]]
run_dump_test "xsavec-intel"
run_dump_test "xsaves"
run_dump_test "xsaves-intel"
+ run_dump_test "prefetchwt1"
+ run_dump_test "prefetchwt1-intel"
run_dump_test "disassem"
# These tests require support for 8 and 16 bit relocs,
@@ -571,6 +573,8 @@ if [expr ([istarget "i*86-*-*"] || [istarget "x86_64-*-*"]) && [gas_64_check]] t
run_dump_test "x86-64-xsavec-intel"
run_dump_test "x86-64-xsaves"
run_dump_test "x86-64-xsaves-intel"
+ run_dump_test "x86-64-prefetchwt1"
+ run_dump_test "x86-64-prefetchwt1-intel"
if { ![istarget "*-*-aix*"]
&& ![istarget "*-*-beos*"]
diff --git a/gas/testsuite/gas/i386/prefetchwt1-intel.d b/gas/testsuite/gas/i386/prefetchwt1-intel.d
new file mode 100644
index 0000000..c8b1f62
--- /dev/null
+++ b/gas/testsuite/gas/i386/prefetchwt1-intel.d
@@ -0,0 +1,16 @@
+#as:
+#objdump: -dwMintel
+#name: i386 PREFETCHWT1 insns (Intel disassembly)
+#source: prefetchwt1.s
+
+.*: +file format .*
+
+
+Disassembly of section .text:
+
+0+ <_start>:
+[ ]*[a-f0-9]+: 0f 0d 11 prefetchwt1 BYTE PTR \[ecx\]
+[ ]*[a-f0-9]+: 0f 0d 94 f4 c0 1d fe ff prefetchwt1 BYTE PTR \[esp\+esi\*8-0x1e240\]
+[ ]*[a-f0-9]+: 0f 0d 11 prefetchwt1 BYTE PTR \[ecx\]
+[ ]*[a-f0-9]+: 0f 0d 94 f4 c0 1d fe ff prefetchwt1 BYTE PTR \[esp\+esi\*8-0x1e240\]
+#pass
diff --git a/gas/testsuite/gas/i386/prefetchwt1.d b/gas/testsuite/gas/i386/prefetchwt1.d
new file mode 100644
index 0000000..a1073de
--- /dev/null
+++ b/gas/testsuite/gas/i386/prefetchwt1.d
@@ -0,0 +1,15 @@
+#as:
+#objdump: -dw
+#name: i386 PREFETCHWT1 insns
+
+.*: +file format .*
+
+
+Disassembly of section .text:
+
+0+ <_start>:
+[ ]*[a-f0-9]+: 0f 0d 11 prefetchwt1 \(%ecx\)
+[ ]*[a-f0-9]+: 0f 0d 94 f4 c0 1d fe ff prefetchwt1 -0x1e240\(%esp,%esi,8\)
+[ ]*[a-f0-9]+: 0f 0d 11 prefetchwt1 \(%ecx\)
+[ ]*[a-f0-9]+: 0f 0d 94 f4 c0 1d fe ff prefetchwt1 -0x1e240\(%esp,%esi,8\)
+#pass
diff --git a/gas/testsuite/gas/i386/prefetchwt1.s b/gas/testsuite/gas/i386/prefetchwt1.s
new file mode 100644
index 0000000..ae1b01a
--- /dev/null
+++ b/gas/testsuite/gas/i386/prefetchwt1.s
@@ -0,0 +1,13 @@
+# Check 32bit AVX512PF instructions
+
+ .allow_index_reg
+ .text
+_start:
+
+ prefetchwt1 (%ecx)
+ prefetchwt1 -123456(%esp,%esi,8)
+
+ .intel_syntax noprefix
+
+ prefetchwt1 BYTE PTR [ecx]
+ prefetchwt1 BYTE PTR [esp+esi*8-123456]
diff --git a/gas/testsuite/gas/i386/x86-64-avx512pf-intel.d b/gas/testsuite/gas/i386/x86-64-avx512pf-intel.d
index c0090ce..c6ee87c 100644
--- a/gas/testsuite/gas/i386/x86-64-avx512pf-intel.d
+++ b/gas/testsuite/gas/i386/x86-64-avx512pf-intel.d
@@ -73,8 +73,6 @@ Disassembly of section .text:
[ ]*[a-f0-9]+: 62 92 7d 41 c7 b4 fe 7b 00 00 00 vscatterpf1qps ZMMWORD PTR \[r14\+zmm31\*8\+0x7b\]\{k1\}
[ ]*[a-f0-9]+: 62 92 7d 41 c7 74 39 40 vscatterpf1qps ZMMWORD PTR \[r9\+zmm31\*1\+0x100\]\{k1\}
[ ]*[a-f0-9]+: 62 b2 7d 41 c7 b4 b9 00 04 00 00 vscatterpf1qps ZMMWORD PTR \[rcx\+zmm31\*4\+0x400\]\{k1\}
-[ ]*[a-f0-9]+: 0f 0d 11 prefetchwt1 BYTE PTR \[rcx\]
-[ ]*[a-f0-9]+: 42 0f 0d 94 f0 23 01 00 00 prefetchwt1 BYTE PTR \[rax\+r14\*8\+0x123\]
[ ]*[a-f0-9]+: 62 92 fd 41 c6 8c fe 85 ff ff ff vgatherpf0dpd ZMMWORD PTR \[r14\+ymm31\*8-0x7b\]\{k1\}
[ ]*[a-f0-9]+: 62 92 fd 41 c6 8c fe 85 ff ff ff vgatherpf0dpd ZMMWORD PTR \[r14\+ymm31\*8-0x7b\]\{k1\}
[ ]*[a-f0-9]+: 62 92 fd 41 c6 4c 39 20 vgatherpf0dpd ZMMWORD PTR \[r9\+ymm31\*1\+0x100\]\{k1\}
@@ -139,6 +137,4 @@ Disassembly of section .text:
[ ]*[a-f0-9]+: 62 92 7d 41 c7 b4 fe 85 ff ff ff vscatterpf1qps ZMMWORD PTR \[r14\+zmm31\*8-0x7b\]\{k1\}
[ ]*[a-f0-9]+: 62 92 7d 41 c7 74 39 40 vscatterpf1qps ZMMWORD PTR \[r9\+zmm31\*1\+0x100\]\{k1\}
[ ]*[a-f0-9]+: 62 b2 7d 41 c7 b4 b9 00 04 00 00 vscatterpf1qps ZMMWORD PTR \[rcx\+zmm31\*4\+0x400\]\{k1\}
-[ ]*[a-f0-9]+: 0f 0d 11 prefetchwt1 BYTE PTR \[rcx\]
-[ ]*[a-f0-9]+: 42 0f 0d 94 f0 34 12 00 00 prefetchwt1 BYTE PTR \[rax\+r14\*8\+0x1234\]
#pass
diff --git a/gas/testsuite/gas/i386/x86-64-avx512pf.d b/gas/testsuite/gas/i386/x86-64-avx512pf.d
index 28c7669..0e3c0bd 100644
--- a/gas/testsuite/gas/i386/x86-64-avx512pf.d
+++ b/gas/testsuite/gas/i386/x86-64-avx512pf.d
@@ -72,8 +72,6 @@ Disassembly of section .text:
[ ]*[a-f0-9]+: 62 92 7d 41 c7 b4 fe 7b 00 00 00 vscatterpf1qps 0x7b\(%r14,%zmm31,8\)\{%k1\}
[ ]*[a-f0-9]+: 62 92 7d 41 c7 74 39 40 vscatterpf1qps 0x100\(%r9,%zmm31,1\)\{%k1\}
[ ]*[a-f0-9]+: 62 b2 7d 41 c7 b4 b9 00 04 00 00 vscatterpf1qps 0x400\(%rcx,%zmm31,4\)\{%k1\}
-[ ]*[a-f0-9]+: 0f 0d 11 prefetchwt1 \(%rcx\)
-[ ]*[a-f0-9]+: 42 0f 0d 94 f0 23 01 00 00 prefetchwt1 0x123\(%rax,%r14,8\)
[ ]*[a-f0-9]+: 62 92 fd 41 c6 8c fe 85 ff ff ff vgatherpf0dpd -0x7b\(%r14,%ymm31,8\)\{%k1\}
[ ]*[a-f0-9]+: 62 92 fd 41 c6 8c fe 85 ff ff ff vgatherpf0dpd -0x7b\(%r14,%ymm31,8\)\{%k1\}
[ ]*[a-f0-9]+: 62 92 fd 41 c6 4c 39 20 vgatherpf0dpd 0x100\(%r9,%ymm31,1\)\{%k1\}
@@ -138,6 +136,4 @@ Disassembly of section .text:
[ ]*[a-f0-9]+: 62 92 7d 41 c7 b4 fe 85 ff ff ff vscatterpf1qps -0x7b\(%r14,%zmm31,8\)\{%k1\}
[ ]*[a-f0-9]+: 62 92 7d 41 c7 74 39 40 vscatterpf1qps 0x100\(%r9,%zmm31,1\)\{%k1\}
[ ]*[a-f0-9]+: 62 b2 7d 41 c7 b4 b9 00 04 00 00 vscatterpf1qps 0x400\(%rcx,%zmm31,4\)\{%k1\}
-[ ]*[a-f0-9]+: 0f 0d 11 prefetchwt1 \(%rcx\)
-[ ]*[a-f0-9]+: 42 0f 0d 94 f0 34 12 00 00 prefetchwt1 0x1234\(%rax,%r14,8\)
#pass
diff --git a/gas/testsuite/gas/i386/x86-64-avx512pf.s b/gas/testsuite/gas/i386/x86-64-avx512pf.s
index b2bece4..f2d3b2b 100644
--- a/gas/testsuite/gas/i386/x86-64-avx512pf.s
+++ b/gas/testsuite/gas/i386/x86-64-avx512pf.s
@@ -84,9 +84,6 @@ _start:
vscatterpf1qps 256(%r9,%zmm31){%k1} # AVX512PF
vscatterpf1qps 1024(%rcx,%zmm31,4){%k1} # AVX512PF
- prefetchwt1 (%rcx) # AVX512PF
- prefetchwt1 0x123(%rax,%r14,8) # AVX512PF
-
.intel_syntax noprefix
vgatherpf0dpd ZMMWORD PTR [r14+ymm31*8-123]{k1} # AVX512PF
vgatherpf0dpd ZMMWORD PTR [r14+ymm31*8-123]{k1} # AVX512PF
@@ -168,6 +165,3 @@ _start:
vscatterpf1qps ZMMWORD PTR [r9+zmm31+256]{k1} # AVX512PF
vscatterpf1qps ZMMWORD PTR [rcx+zmm31*4+1024]{k1} # AVX512PF
- prefetchwt1 BYTE PTR [rcx] # AVX512PF
- prefetchwt1 BYTE PTR [rax+r14*8+0x1234] # AVX512PF
-
diff --git a/gas/testsuite/gas/i386/x86-64-prefetchwt1-intel.d b/gas/testsuite/gas/i386/x86-64-prefetchwt1-intel.d
new file mode 100644
index 0000000..1fbdba4
--- /dev/null
+++ b/gas/testsuite/gas/i386/x86-64-prefetchwt1-intel.d
@@ -0,0 +1,16 @@
+#as:
+#objdump: -dwMintel
+#name: x86_64 PREFETCHWT1 insns (Intel disassembly)
+#source: x86-64-prefetchwt1.s
+
+.*: +file format .*
+
+
+Disassembly of section .text:
+
+0+ <_start>:
+[ ]*[a-f0-9]+: 0f 0d 11 prefetchwt1 BYTE PTR \[rcx\]
+[ ]*[a-f0-9]+: 42 0f 0d 94 f0 23 01 00 00 prefetchwt1 BYTE PTR \[rax\+r14\*8\+0x123\]
+[ ]*[a-f0-9]+: 0f 0d 11 prefetchwt1 BYTE PTR \[rcx\]
+[ ]*[a-f0-9]+: 42 0f 0d 94 f0 34 12 00 00 prefetchwt1 BYTE PTR \[rax\+r14\*8\+0x1234\]
+#pass
diff --git a/gas/testsuite/gas/i386/x86-64-prefetchwt1.d b/gas/testsuite/gas/i386/x86-64-prefetchwt1.d
new file mode 100644
index 0000000..1118f55
--- /dev/null
+++ b/gas/testsuite/gas/i386/x86-64-prefetchwt1.d
@@ -0,0 +1,15 @@
+#as:
+#objdump: -dw
+#name: x86_64 PREFETCHWT1 insns
+
+.*: +file format .*
+
+
+Disassembly of section .text:
+
+0+ <_start>:
+[ ]*[a-f0-9]+: 0f 0d 11 prefetchwt1 \(%rcx\)
+[ ]*[a-f0-9]+: 42 0f 0d 94 f0 23 01 00 00 prefetchwt1 0x123\(%rax,%r14,8\)
+[ ]*[a-f0-9]+: 0f 0d 11 prefetchwt1 \(%rcx\)
+[ ]*[a-f0-9]+: 42 0f 0d 94 f0 34 12 00 00 prefetchwt1 0x1234\(%rax,%r14,8\)
+#pass
diff --git a/gas/testsuite/gas/i386/x86-64-prefetchwt1.s b/gas/testsuite/gas/i386/x86-64-prefetchwt1.s
new file mode 100644
index 0000000..ae63b42
--- /dev/null
+++ b/gas/testsuite/gas/i386/x86-64-prefetchwt1.s
@@ -0,0 +1,13 @@
+# Check 64bit AVX512PF instructions
+
+ .allow_index_reg
+ .text
+_start:
+
+ prefetchwt1 (%rcx) # AVX512PF
+ prefetchwt1 0x123(%rax,%r14,8) # AVX512PF
+
+ .intel_syntax noprefix
+
+ prefetchwt1 BYTE PTR [rcx] # AVX512PF
+ prefetchwt1 BYTE PTR [rax+r14*8+0x1234] # AVX512PF