From 58572bbb62c9588c658fd7656ee359d27c306fb2 Mon Sep 17 00:00:00 2001
From: YunQiang Su <yunqiang.su@cipunited.com>
Date: Fri, 3 Sep 2021 03:32:26 -0400
Subject: [PATCH] MIPS: add .module arch and ase to all output asm

Currently, the asm output file for MIPS has no rev info.
It can make some trouble, for example:

  assembler is mips1 by default,
  gcc is fpxx by default.

To assemble the output of gcc -S, we have to pass -mips2
to assembler.

The same situation is for some CPU has extension insn.
Octeon is an example.
So we can just add ".set arch=octeon".

If an ASE is enabled, .module ase will also be used.

gcc/ChangeLog:
	* config/mips/mips.c (mips_file_start): add .module for
	  arch and ase.
---
 gcc/config/mips/mips.c | 37 +++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)

diff --git a/gcc/config/mips/mips.c b/gcc/config/mips/mips.c
index 493d3de..ade5d70 100644
--- a/gcc/config/mips/mips.c
+++ b/gcc/config/mips/mips.c
@@ -9896,6 +9896,43 @@ mips_file_start (void)
   else
     fputs ("\t.module\tnooddspreg\n", asm_out_file);
 
+  fprintf (asm_out_file, "\t.module\tarch=%s\n", mips_arch_info->name);
+  /* FIXME: DSPR3 is not supported by GCC? gas does support it */
+  if (TARGET_DSPR2)
+    fputs ("\t.module\tdspr2\n", asm_out_file);
+  else if (TARGET_DSP)
+    fputs ("\t.module\tdsp\n", asm_out_file);
+  if (TARGET_EVA)
+    fputs ("\t.module\teva\n", asm_out_file);
+  if (TARGET_MCU)
+    fputs ("\t.module\tmcu\n", asm_out_file);
+  if (TARGET_MDMX)
+    fputs ("\t.module\tmdmx\n", asm_out_file);
+  if (TARGET_MIPS3D)
+    fputs ("\t.module\tmips3d\n", asm_out_file);
+  if (TARGET_MT)
+    fputs ("\t.module\tmt\n", asm_out_file);
+  if (TARGET_SMARTMIPS)
+    fputs ("\t.module\tsmartmips\n", asm_out_file);
+  if (TARGET_VIRT)
+    fputs ("\t.module\tvirt\n", asm_out_file);
+  if (TARGET_MSA)
+    fputs ("\t.module\tmsa\n", asm_out_file);
+  if (TARGET_XPA)
+    fputs ("\t.module\txpa\n", asm_out_file);
+  /* FIXME: MIPS16E2 is not supported by GCC? gas does support it */
+  if (TARGET_CRC)
+    fputs ("\t.module\tcrc\n", asm_out_file);
+  if (TARGET_GINV)
+    fputs ("\t.module\tginv\n", asm_out_file);
+  if (TARGET_LOONGSON_MMI)
+    fputs ("\t.module\tloongson-mmi\n", asm_out_file);
+  /* FIXME: LOONGSON-CAM is not supported by GCC? gas does support it */
+  if (TARGET_LOONGSON_EXT2)
+    fputs ("\t.module\tloongson-ext2\n", asm_out_file);
+  else if (TARGET_LOONGSON_EXT)
+    fputs ("\t.module\tloongson-ext\n", asm_out_file);
+
 #else
 #ifdef HAVE_AS_GNU_ATTRIBUTE
   {
-- 
2.7.4