[gcc r17-2423] Revert "MIPS: Add -mmxu and -mno-mxu driver pass through"

https://gcc.gnu.org/g:6f754f345e06219b98acc91327bd2a51d52e954e

commit r17-2423-g6f754f345e06219b98acc91327bd2a51d52e954e
Author: Jeff Law <[email protected]>
Date:   Wed Jul 15 11:22:36 2026 -0600

    Revert "MIPS: Add -mmxu and -mno-mxu driver pass through"
    
    This reverts commit b5404c42dde7dba8c72b9246cca288c256b55d8c.

Diff:
---
 gcc/config/mips/mips.h                         |  1 -
 gcc/config/mips/mips.opt                       |  3 ---
 gcc/testsuite/gcc.target/mips/mxu-compile-no.c |  8 --------
 gcc/testsuite/gcc.target/mips/mxu-compile.c    |  8 --------
 gcc/testsuite/gcc.target/mips/mxu-driver-no.c  | 11 -----------
 gcc/testsuite/gcc.target/mips/mxu-driver.c     | 11 -----------
 6 files changed, 42 deletions(-)

diff --git a/gcc/config/mips/mips.h b/gcc/config/mips/mips.h
index 36115e1c9e30..48a562f2d39d 100644
--- a/gcc/config/mips/mips.h
+++ b/gcc/config/mips/mips.h
@@ -1490,7 +1490,6 @@ struct mips_cpu_info {
 %{mloongson-ext2} %{mno-loongson-ext2} \
 %{msmartmips} %{mno-smartmips} \
 %{mmt} %{mno-mt} \
-%{mmxu} %{mno-mxu} \
 %{mfix-r5900} %{mno-fix-r5900} \
 %{mfix-rm7000} %{mno-fix-rm7000} \
 %{mfix-vr4120} %{mfix-vr4130} \
diff --git a/gcc/config/mips/mips.opt b/gcc/config/mips/mips.opt
index fda0f78b8bac..eb14761ea273 100644
--- a/gcc/config/mips/mips.opt
+++ b/gcc/config/mips/mips.opt
@@ -332,9 +332,6 @@ mmt
 Target Var(TARGET_MT)
 Allow the use of MT instructions.
 
-mmxu
-Driver Target Undocumented
-
 mno-float
 Target RejectNegative Var(TARGET_NO_FLOAT) Condition(TARGET_SUPPORTS_NO_FLOAT)
 Prevent the use of all floating-point operations.
diff --git a/gcc/testsuite/gcc.target/mips/mxu-compile-no.c b/gcc/testsuite/gcc.target/mips/mxu-compile-no.c
deleted file mode 100644
index 03b002c1971e..000000000000
--- a/gcc/testsuite/gcc.target/mips/mxu-compile-no.c
+++ /dev/null
@@ -1,8 +0,0 @@
-/* { dg-do compile } */
-/* { dg-additional-options "-mno-mxu" } */
-
-int
-main (void)
-{
-  return 0;
-}
diff --git a/gcc/testsuite/gcc.target/mips/mxu-compile.c b/gcc/testsuite/gcc.target/mips/mxu-compile.c
deleted file mode 100644
index a4c46b48d905..000000000000
--- a/gcc/testsuite/gcc.target/mips/mxu-compile.c
+++ /dev/null
@@ -1,8 +0,0 @@
-/* { dg-do compile } */
-/* { dg-additional-options "-mmxu" } */
-
-int
-main (void)
-{
-  return 0;
-}
diff --git a/gcc/testsuite/gcc.target/mips/mxu-driver-no.c b/gcc/testsuite/gcc.target/mips/mxu-driver-no.c
deleted file mode 100644
index a4f46aa0239f..000000000000
--- a/gcc/testsuite/gcc.target/mips/mxu-driver-no.c
+++ /dev/null
@@ -1,11 +0,0 @@
-/* { dg-do assemble } */
-/* { dg-additional-options "-mno-mxu -###" } */
-
-int
-main (void)
-{
-  return 0;
-}
-
-/* { dg-message ".*/.*as .* -mno-mxu" "assembler options" { target *-*-* } 0 } */
-/* { dg-purne-output ".*" } */
diff --git a/gcc/testsuite/gcc.target/mips/mxu-driver.c b/gcc/testsuite/gcc.target/mips/mxu-driver.c
deleted file mode 100644
index 21287d5bdb26..000000000000
--- a/gcc/testsuite/gcc.target/mips/mxu-driver.c
+++ /dev/null
@@ -1,11 +0,0 @@
-/* { dg-do assemble } */
-/* { dg-additional-options "-mmxu -###" } */
-
-int
-main (void)
-{
-  return 0;
-}
-
-/* { dg-message ".*/.*as .* -mmxu" "assembler options" { target *-*-* } 0 } */
-/* { dg-purne-output ".*" } */