From: Jan Beulich <jbeulich@novell.com>
Date: Thu, 8 Mar 2018 07:35:48 +0000 (+0100)
Subject: x86: avoid SSE check for LDMXCSR/STMXCSR
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=f2f6a710f46e3e7b357128d907002945751afcfd;p=binutils-gdb.git

x86: avoid SSE check for LDMXCSR/STMXCSR

Neither touches any XMM register, so the check is pointless. It is imo
even questionable whether in SSE2AVX mode the two should be converted to
their AVX counterparts.
---

diff --git a/opcodes/ChangeLog b/opcodes/ChangeLog
index b4f21953b86..0b88174ed81 100644
--- a/opcodes/ChangeLog
+++ b/opcodes/ChangeLog
@@ -1,3 +1,8 @@
+2018-03-08  Jan Beulich  <jbeulich@suse.com>
+
+	* i386-opc.tbl (ldmxcsr, stmxcsr): Add NoAVX.
+	* i386-tlb.h: Re-generate.
+
 2018-03-08  Jan Beulich  <jbeulich@suse.com>
 
 	* i386-gen.c (opcode_modifiers): Delete FloatD.
diff --git a/opcodes/i386-opc.tbl b/opcodes/i386-opc.tbl
index c44644b9503..de59964d1f9 100644
--- a/opcodes/i386-opc.tbl
+++ b/opcodes/i386-opc.tbl
@@ -1215,7 +1215,7 @@ divps, 2, 0xf5e, None, 2, CpuSSE, Modrm|IgnoreSize|No_bSuf|No_wSuf|No_lSuf|No_sS
 divss, 2, 0xf35e, None, 1, CpuAVX, Modrm|Vex=3|VexOpcode=0|VexVVVV=1|VexW=1|IgnoreSize|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf|SSE2AVX, { Dword|Unspecified|BaseIndex|RegXMM, RegXMM }
 divss, 2, 0xf30f5e, None, 2, CpuSSE, Modrm|IgnoreSize|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, { Dword|Unspecified|BaseIndex|RegXMM, RegXMM }
 ldmxcsr, 1, 0xae, 0x2, 1, CpuAVX, Modrm|Vex=3|VexOpcode=0|VexW=1|IgnoreSize|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf|SSE2AVX, { Dword|Unspecified|BaseIndex }
-ldmxcsr, 1, 0xfae, 0x2, 2, CpuSSE, Modrm|IgnoreSize|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, { Dword|Unspecified|BaseIndex }
+ldmxcsr, 1, 0xfae, 0x2, 2, CpuSSE, Modrm|IgnoreSize|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf|NoAVX, { Dword|Unspecified|BaseIndex }
 maskmovq, 2, 0xff7, None, 2, CpuSSE|Cpu3dnowA, Modrm|IgnoreSize|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf|NoAVX, { RegMMX, RegMMX }
 maxps, 2, 0x5f, None, 1, CpuAVX, Modrm|Vex|VexOpcode=0|VexVVVV=1|VexW=1|IgnoreSize|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf|SSE2AVX, { Xmmword|Unspecified|BaseIndex|RegXMM, RegXMM }
 maxps, 2, 0xf5f, None, 2, CpuSSE, Modrm|IgnoreSize|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, { Xmmword|Unspecified|BaseIndex|RegXMM, RegXMM }
@@ -1325,7 +1325,7 @@ sqrtps, 2, 0xf51, None, 2, CpuSSE, Modrm|IgnoreSize|No_bSuf|No_wSuf|No_lSuf|No_s
 sqrtss, 2, 0xf351, None, 1, CpuAVX, Modrm|Vex=3|VexOpcode=0|VexVVVV=1|VexW=1|IgnoreSize|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf|SSE2AVX, { Dword|Unspecified|BaseIndex|RegXMM, RegXMM }
 sqrtss, 2, 0xf30f51, None, 2, CpuSSE, Modrm|IgnoreSize|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, { Dword|Unspecified|BaseIndex|RegXMM, RegXMM }
 stmxcsr, 1, 0xae, 0x3, 1, CpuAVX, Modrm|Vex=3|VexOpcode=0|VexW=1|IgnoreSize|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf|SSE2AVX, { Dword|Unspecified|BaseIndex }
-stmxcsr, 1, 0xfae, 0x3, 2, CpuSSE, Modrm|IgnoreSize|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, { Dword|Unspecified|BaseIndex }
+stmxcsr, 1, 0xfae, 0x3, 2, CpuSSE, Modrm|IgnoreSize|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf|NoAVX, { Dword|Unspecified|BaseIndex }
 subps, 2, 0x5c, None, 1, CpuAVX, Modrm|Vex|VexOpcode=0|VexVVVV=1|VexW=1|IgnoreSize|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf|SSE2AVX, { Xmmword|Unspecified|BaseIndex|RegXMM, RegXMM }
 subps, 2, 0xf5c, None, 2, CpuSSE, Modrm|IgnoreSize|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, { Xmmword|Unspecified|BaseIndex|RegXMM, RegXMM }
 subss, 2, 0xf35c, None, 1, CpuAVX, Modrm|Vex=3|VexOpcode=0|VexVVVV=1|VexW=1|IgnoreSize|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf|SSE2AVX, { Dword|Unspecified|BaseIndex|RegXMM, RegXMM }
diff --git a/opcodes/i386-tbl.h b/opcodes/i386-tbl.h
index 381f00890f0..bbdbefe6b32 100644
--- a/opcodes/i386-tbl.h
+++ b/opcodes/i386-tbl.h
@@ -15099,7 +15099,7 @@ const insn_template i386_optab[] =
         0, 0, 0, 0, 0, 0 } },
     { 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 1, 1,
       1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-      0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+      0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
       0, 0, 0, 0, 0 },
     { { { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1,
 	  0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0,
@@ -16996,7 +16996,7 @@ const insn_template i386_optab[] =
         0, 0, 0, 0, 0, 0 } },
     { 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 1, 1,
       1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-      0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+      0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
       0, 0, 0, 0, 0 },
     { { { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1,
 	  0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0,