[gcc r16-7979] testsuite: Remove -O options from some mips.exp tests

[Richard Sandiford]

https://gcc.gnu.org/g:1b5087db30833cc6cea2ae5966dea1a76c028987

commit r16-7979-g1b5087db30833cc6cea2ae5966dea1a76c028987
Author: Richard Sandiford <rdsandiford@googlemail.com>
Date:   Tue Mar 10 12:05:56 2026 +0000

    testsuite: Remove -O options from some mips.exp tests
    
    Running mips.exp generated several errors like:
    
    ERROR: gcc.target/mips/pr118608-1.c   -O0 : Unrecognised option: -O2 for " dg-options 2 "-mabi=64 -O2" "
    
    mips.exp overrides dg-options with some logic to (try to) enable
    the transitive closure of features that would be needed to make the
    dg-options valid for the current test run, downgrading from run to
    assemble to compile as neecessary.  In order to make sure that
    every relevant option has been considered, this version of dg-options
    errors out for things that it doesn't recognise.
    
    -O options aren't in the list because mips.exp cycles through the usual
    optimisation options.  Instead, dg-skips are used if the test doesn't
    make sense for a particular -O* option.
    
    Removing the -O options makes pr118608-2.c identical to pr118608-1.c
    and pr118608-4.c identical to pr118608-3.c.
    
    gcc/testsuite/
            * gcc.target/mips/pr118608-2.c: Delete.
            * gcc.target/mips/pr118608-4.c: Likewise.
            * gcc.target/mips/pr123833.c: Remove -O* option.
            * gcc.target/mips/pr118608-1.c: Likewise.
            * gcc.target/mips/pr118608-3.c: Likewise, and rename to pr118608-2.c.

Diff:
---
 gcc/testsuite/gcc.target/mips/pr118608-1.c |  2 +-
 gcc/testsuite/gcc.target/mips/pr118608-2.c |  4 +--
 gcc/testsuite/gcc.target/mips/pr118608-3.c | 45 ------------------------------
 gcc/testsuite/gcc.target/mips/pr118608-4.c | 45 ------------------------------
 gcc/testsuite/gcc.target/mips/pr123833.c   |  2 +-
 5 files changed, 4 insertions(+), 94 deletions(-)

diff --git a/gcc/testsuite/gcc.target/mips/pr118608-1.c b/gcc/testsuite/gcc.target/mips/pr118608-1.c
index e7384d7137d8..9604b38059e5 100644
--- a/gcc/testsuite/gcc.target/mips/pr118608-1.c
+++ b/gcc/testsuite/gcc.target/mips/pr118608-1.c
@@ -1,5 +1,5 @@
 /* { dg-do run } */
-/* { dg-options "-mabi=64 -O2" } */
+/* { dg-options "-mabi=64" } */
 
 #define COUNT 10
 
diff --git a/gcc/testsuite/gcc.target/mips/pr118608-2.c b/gcc/testsuite/gcc.target/mips/pr118608-2.c
index a5bcfda6ca13..d4c3908174d0 100644
--- a/gcc/testsuite/gcc.target/mips/pr118608-2.c
+++ b/gcc/testsuite/gcc.target/mips/pr118608-2.c
@@ -1,5 +1,5 @@
-/* { dg-do run } */
-/* { dg-options "-mabi=64 -Os" } */
+/* { dg-do compile } */
+/* { dg-options "-mabi=64 -march=octeon2" } */
 
 #define COUNT 10
 
diff --git a/gcc/testsuite/gcc.target/mips/pr118608-3.c b/gcc/testsuite/gcc.target/mips/pr118608-3.c
deleted file mode 100644
index f017e4e858c1..000000000000
--- a/gcc/testsuite/gcc.target/mips/pr118608-3.c
+++ /dev/null
@@ -1,45 +0,0 @@
-/* { dg-do compile } */
-/* { dg-options "-mabi=64 -O2 -march=octeon2" } */
-
-#define COUNT 10
-
-typedef unsigned short u16;
-typedef unsigned int   u32;
-
-typedef struct NeedleAddress
-{
-  u16   nId;
-  u16   mId;
-} NeedleAddress;
-
-u32 __attribute__ ((noinline)) prepareNeedle(const u16 upper, const u16 lower)
-{
-    u32 needleAddress = 0;
-    NeedleAddress *const addr = (NeedleAddress*)(&needleAddress);
-    addr->mId = upper;
-    addr->nId = lower;
-    return needleAddress;
-}
-
-const u32* __attribute__ ((noinline)) findNeedle(const u32 needle, const u32* begin, const u32* end)
-{
-    while ( begin != end && needle != *begin )
-    {
-        ++begin;
-    }
-    return begin;
-}
-
-int main()
-{
-    u32 needle = prepareNeedle(0xDCBA, 0xABCD);
-
-    u32 haystack[COUNT] = {};
-    for (int i = 0; i < COUNT; i++)
-        haystack[i] = needle;
-
-    const u32* result = findNeedle(needle, haystack, haystack + COUNT);
-    if (result == haystack + COUNT)
-        __builtin_abort ();
-    return 0;
-}
diff --git a/gcc/testsuite/gcc.target/mips/pr118608-4.c b/gcc/testsuite/gcc.target/mips/pr118608-4.c
deleted file mode 100644
index 4c96e378e0fe..000000000000
--- a/gcc/testsuite/gcc.target/mips/pr118608-4.c
+++ /dev/null
@@ -1,45 +0,0 @@
-/* { dg-do compile } */
-/* { dg-options "-mabi=64 -Os -march=octeon2" } */
-
-#define COUNT 10
-
-typedef unsigned short u16;
-typedef unsigned int   u32;
-
-typedef struct NeedleAddress
-{
-  u16   nId;
-  u16   mId;
-} NeedleAddress;
-
-u32 __attribute__ ((noinline)) prepareNeedle(const u16 upper, const u16 lower)
-{
-    u32 needleAddress = 0;
-    NeedleAddress *const addr = (NeedleAddress*)(&needleAddress);
-    addr->mId = upper;
-    addr->nId = lower;
-    return needleAddress;
-}
-
-const u32* __attribute__ ((noinline)) findNeedle(const u32 needle, const u32* begin, const u32* end)
-{
-    while ( begin != end && needle != *begin )
-    {
-        ++begin;
-    }
-    return begin;
-}
-
-int main()
-{
-    u32 needle = prepareNeedle(0xDCBA, 0xABCD);
-
-    u32 haystack[COUNT] = {};
-    for (int i = 0; i < COUNT; i++)
-        haystack[i] = needle;
-
-    const u32* result = findNeedle(needle, haystack, haystack + COUNT);
-    if (result == haystack + COUNT)
-        __builtin_abort ();
-    return 0;
-}
diff --git a/gcc/testsuite/gcc.target/mips/pr123833.c b/gcc/testsuite/gcc.target/mips/pr123833.c
index 4d0c9e8eaece..a3d7e4f97f36 100644
--- a/gcc/testsuite/gcc.target/mips/pr123833.c
+++ b/gcc/testsuite/gcc.target/mips/pr123833.c
@@ -1,5 +1,5 @@
 /* { dg-do compile } */
-/* { dg-options "-O1 -mabi=64 -mhard-float" } */
+/* { dg-options "-mabi=64 -mhard-float" } */
 
 typedef short int16_t;
 typedef signed char int8_t;