Don't generate multi-byte NOPs for i686.

gas/

2010-08-06  Quentin Neill <quentin.neill@amd.com>

	* config/tc-i386.c (arch_entry): Add negated bit to
	  disambiguate flag names starting with "no".
	  (cpu_arch): Add negated bit definitions.  Add
	  ".nop" CPU extension.
	  (i386_align_code): Use new .cpunop bit to decide
	  when to generate alignment using nops.
	  (set_cpu_arch): Use negated bit instead to decide
	  when to use cpu_flags or vs. cpu_flags_and_not.
	  (md_parse_option): Likewise.

gas/testsuite/

2010-08-06  Quentin Neill <quentin.neill@amd.com>

	* gas/i386/arch-10-1.l: Add nopl instruction.
	* gas/i386/arch-10-2.l: Likewise.
	* gas/i386/arch-10-3.l: Likewise.
	* gas/i386/arch-10-4.l: Likewise.
	* gas/i386/arch-10.s: Likewise.
	* gas/i386/arch-10.d: Add nopl instruction, and +nopl extension
	flag to as flags.
	* gas/i386/nops-5-i686.d: Change alignment code generated for
	-mtune=i686.
	* gas/i386/nops-5.d: Change alignment code generated for
	.arch i686.
	* gas/i386/x86-64-nops-5-k8.d: Likewise.
	* gas/i386/x86-64-nops-5.d: Likewise.

opcodes/

2010-08-06  Quentin Neill <quentin.neill@amd.com>

	* i386-gen.c (cpu_flag_init): Define CpuNop extension flag, add
	to processor flags for PENTIUMPRO processors and later.
	* i386-opc.h (enum): Add CpuNop.
	(i386_cpu_flags): Add cpunop bit.
	* i386-opc.tbl: Change nop cpu_flags.
	* i386-init.h: Regenerated.
	* i386-tbl.h: Likewise.

1 files changed, 17 insertions, 12 deletions

diff --git a/opcodes/i386-gen.c b/opcodes/i386-gen.c
index 72371ed..5f5d2c3 100644
--- a/opcodes/i386-gen.c
+++ b/opcodes/i386-gen.c
@@ -62,32 +62,34 @@ static initializer cpu_flag_init[] =
     "Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu387" },
   { "CPU_I686_FLAGS",
     "Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686|Cpu387|Cpu687" },
+  { "CPU_PENTIUMPRO_FLAGS",
+    "Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686|Cpu387|Cpu687|CpuNop" },
   { "CPU_P2_FLAGS",
-    "Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686|Cpu387|Cpu687|CpuMMX" },
+    "Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686|Cpu387|Cpu687|CpuNop|CpuMMX" },
   { "CPU_P3_FLAGS",
-    "Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686|Cpu387|Cpu687|CpuMMX|CpuSSE" },
+    "Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686|Cpu387|Cpu687|CpuNop|CpuMMX|CpuSSE" },
   { "CPU_P4_FLAGS",
-    "Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686|CpuClflush|Cpu387|Cpu687|CpuMMX|CpuSSE|CpuSSE2" },
+    "Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686|CpuClflush|Cpu387|Cpu687|CpuNop|CpuMMX|CpuSSE|CpuSSE2" },
   { "CPU_NOCONA_FLAGS",
-    "Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686|CpuClflush|Cpu387|Cpu687|CpuFISTTP|CpuMMX|CpuSSE|CpuSSE2|CpuSSE3|CpuLM" },
+    "Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686|CpuClflush|Cpu387|Cpu687|CpuFISTTP|CpuNop|CpuMMX|CpuSSE|CpuSSE2|CpuSSE3|CpuLM" },
   { "CPU_CORE_FLAGS",
-    "Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686|CpuClflush|Cpu387|Cpu687|CpuFISTTP|CpuMMX|CpuSSE|CpuSSE2|CpuSSE3" },
+    "Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686|CpuClflush|Cpu387|Cpu687|CpuFISTTP|CpuNop|CpuMMX|CpuSSE|CpuSSE2|CpuSSE3" },
   { "CPU_CORE2_FLAGS",
-    "Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686|CpuClflush|Cpu387|Cpu687|CpuFISTTP|CpuMMX|CpuSSE|CpuSSE2|CpuSSE3|CpuSSSE3|CpuLM" },
+    "Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686|CpuClflush|Cpu387|Cpu687|CpuFISTTP|CpuNop|CpuMMX|CpuSSE|CpuSSE2|CpuSSE3|CpuSSSE3|CpuLM" },
   { "CPU_COREI7_FLAGS",
-    "Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686|CpuClflush|Cpu387|Cpu687|CpuFISTTP|CpuMMX|CpuSSE|CpuSSE2|CpuSSE3|CpuSSSE3|CpuSSE4_1|CpuSSE4_2|CpuRdtscp|CpuLM" },
+    "Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686|CpuClflush|Cpu387|Cpu687|CpuFISTTP|CpuNop|CpuMMX|CpuSSE|CpuSSE2|CpuSSE3|CpuSSSE3|CpuSSE4_1|CpuSSE4_2|CpuRdtscp|CpuLM" },
   { "CPU_K6_FLAGS",
     "Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|CpuSYSCALL|Cpu387|CpuMMX" },
   { "CPU_K6_2_FLAGS",
-    "Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|CpuSYSCALL|Cpu387|CpuMMX|Cpu3dnow" },
+    "Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|CpuSYSCALL|Cpu387|CpuNop|CpuMMX|Cpu3dnow" },
   { "CPU_ATHLON_FLAGS",
-    "Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686|CpuSYSCALL|Cpu387|Cpu687|CpuMMX|Cpu3dnow|Cpu3dnowA" },
+    "Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686|CpuSYSCALL|Cpu387|Cpu687|CpuNop|CpuMMX|Cpu3dnow|Cpu3dnowA" },
   { "CPU_K8_FLAGS",
-    "Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686|CpuSYSCALL|CpuRdtscp|Cpu387|Cpu687|CpuMMX|Cpu3dnow|Cpu3dnowA|CpuSSE|CpuSSE2|CpuLM" },
+    "Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686|CpuSYSCALL|CpuRdtscp|Cpu387|Cpu687|CpuNop|CpuMMX|Cpu3dnow|Cpu3dnowA|CpuSSE|CpuSSE2|CpuLM" },
   { "CPU_AMDFAM10_FLAGS",
-    "Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686|CpuSYSCALL|CpuRdtscp|Cpu387|Cpu687|CpuFISTTP|CpuMMX|Cpu3dnow|Cpu3dnowA|CpuSSE|CpuSSE2|CpuSSE3|CpuSSE4a|CpuABM|CpuLM" },
+    "Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686|CpuSYSCALL|CpuRdtscp|Cpu387|Cpu687|CpuFISTTP|CpuNop|CpuMMX|Cpu3dnow|Cpu3dnowA|CpuSSE|CpuSSE2|CpuSSE3|CpuSSE4a|CpuABM|CpuLM" },
   { "CPU_BDVER1_FLAGS",
-    "Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686|CpuSYSCALL|CpuRdtscp|Cpu387|Cpu687|CpuFISTTP|CpuMMX|Cpu3dnow|Cpu3dnowA|CpuSSE|CpuSSE2|CpuSSE3|CpuSSE4a|CpuABM|CpuLM|CpuFMA4|CpuXOP|CpuLWP" },
+    "Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686|CpuSYSCALL|CpuRdtscp|Cpu387|Cpu687|CpuFISTTP|CpuNop|CpuMMX|Cpu3dnow|Cpu3dnowA|CpuSSE|CpuSSE2|CpuSSE3|CpuSSE4a|CpuABM|CpuLM|CpuFMA4|CpuXOP|CpuLWP" },
   { "CPU_8087_FLAGS",
     "Cpu8087" },
   { "CPU_287_FLAGS",
@@ -98,6 +100,8 @@ static initializer cpu_flag_init[] =
     "Cpu8087|Cpu287|Cpu387|Cpu687|CpuFISTTP" },
   { "CPU_CLFLUSH_FLAGS",
     "CpuClflush" },
+  { "CPU_NOP_FLAGS",
+    "CpuNop" },
   { "CPU_SYSCALL_FLAGS",
     "CpuSYSCALL" },
   { "CPU_MMX_FLAGS",
@@ -284,6 +288,7 @@ static bitfield cpu_flags[] =
   BITFIELD (Cpu586),
   BITFIELD (Cpu686),
   BITFIELD (CpuClflush),
+  BITFIELD (CpuNop),
   BITFIELD (CpuSYSCALL),
   BITFIELD (Cpu8087),
   BITFIELD (Cpu287),