2 files changed, 226 insertions, 0 deletions

diff --git a/meta/recipes-devtools/gcc/gcc-13.2.inc b/meta/recipes-devtools/gcc/gcc-13.2.inc
index 7329562f65..7f97ecc332 100644
--- a/meta/recipes-devtools/gcc/gcc-13.2.inc
+++ b/meta/recipes-devtools/gcc/gcc-13.2.inc
@@ -64,6 +64,7 @@ SRC_URI = "${BASEURI} \
            file://0022-libatomic-Do-not-enforce-march-on-aarch64.patch \
            file://0023-Fix-install-path-of-linux64.h.patch \
            file://0024-Avoid-hardcoded-build-paths-into-ppc-libgcc.patch \
+           file://0025-gcc-testsuite-mips.patch \
 "
 SRC_URI[sha256sum] = "e275e76442a6067341a27f04c5c6b83d8613144004c0413528863dc6b5c743da"
 
diff --git a/meta/recipes-devtools/gcc/gcc/0025-gcc-testsuite-mips.patch b/meta/recipes-devtools/gcc/gcc/0025-gcc-testsuite-mips.patch
new file mode 100644
index 0000000000..49eaece923
--- /dev/null
+++ b/meta/recipes-devtools/gcc/gcc/0025-gcc-testsuite-mips.patch
@@ -0,0 +1,225 @@
+gcc testsuite tweaks for mips/OE
+
+Disable loongson-mmi runtine, qemu doesn't appear to fully support them even if some
+of the instruction decoding is there.
+
+Also disable MSA mips runtime extensions. For some reason qemu appears to accept the test
+code when it shouldn't. Our selected MIPS cpu for QEMU doesn't support them.
+
+MIPS is unusual in the gcc testsuite as it uses EFFECTIVE_TARGETS and loops
+multiple times through the vector testsuite. In the case of the two above, we can
+compile/link them but not run them. Even with the runtime disabled, if the code
+marks it as a runtime test, it will elevate itself to that. Setting the default
+target to compile therefore isn't enough.
+
+Therefore add code to downgrade runtime tests to link tests if the hardware
+support isn't there to run them. This avoids thousands of test failures. To do
+this we have to hook downgrade code into the main test runner.
+
+Enable that downgrading for other cases where hardware to run vector extensions is
+unavailable to remove test failures on other architectures too.
+
+Also, for gcc.target tests, add checks on wheter loongson or msa code can
+be run before trying that, allowing downgrading of tests there to work too.
+
+Upstream-Status: Pending
+[Parts of the patch may be able to be split off and acceptable to upstream with
+discussion. Need to investigate why qemu-user passes the 'bad' instructions']
+
+Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
+
+Index: gcc-13.2.0/gcc/testsuite/lib/target-supports.exp
+===================================================================
+--- gcc-13.2.0.orig/gcc/testsuite/lib/target-supports.exp
++++ gcc-13.2.0/gcc/testsuite/lib/target-supports.exp
+@@ -2155,14 +2155,7 @@ proc check_mips_loongson_mmi_hw_availabl
+        if { !([istarget mips*-*-*]) } {
+            expr 0
+        } else {
+-           check_runtime_nocache mips_loongson_mmi_hw_available {
+-             #include <loongson-mmiintrin.h>
+-             int main()
+-             {
+-               asm volatile ("paddw $f2,$f4,$f6");
+-               return 0;
+-             }
+-           } "-mloongson-mmi"
++           expr 0
+        }
+     }]
+ }
+@@ -2176,29 +2169,7 @@ proc check_mips_msa_hw_available { } {
+     if { !([istarget mips*-*-*]) } {
+       expr 0
+     } else {
+-      check_runtime_nocache mips_msa_hw_available {
+-       #if !defined(__mips_msa)
+-       #error "MSA NOT AVAIL"
+-       #else
+-       #if !(((__mips == 64) || (__mips == 32)) && (__mips_isa_rev >= 2))
+-       #error "MSA NOT AVAIL FOR ISA REV < 2"
+-       #endif
+-       #if !defined(__mips_hard_float)
+-       #error "MSA HARD_FLOAT REQUIRED"
+-       #endif
+-       #if __mips_fpr != 64
+-       #error "MSA 64-bit FPR REQUIRED"
+-       #endif
+-       #include <msa.h>
+-
+-       int main()
+-       {
+-         v8i16 v = __builtin_msa_ldi_h (0);
+-         v[0] = 0;
+-         return v[0];
+-       }
+-       #endif
+-      } "-mmsa"
++      expr 0
+     }
+   }]
+ }
+@@ -9187,6 +9158,7 @@ proc is-effective-target-keyword { arg }
+ 
+ proc et-dg-runtest { runtest testcases flags default-extra-flags } {
+     global dg-do-what-default
++    global do-what-limit
+     global EFFECTIVE_TARGETS
+     global et_index
+ 
+@@ -9194,6 +9166,7 @@ proc et-dg-runtest { runtest testcases f
+        foreach target $EFFECTIVE_TARGETS {
+            set target_flags $flags
+            set dg-do-what-default compile
++            set do-what-limit link
+            set et_index [lsearch -exact $EFFECTIVE_TARGETS $target]
+            if { [info procs add_options_for_${target}] != [list] } {
+                set target_flags [add_options_for_${target} "$flags"]
+@@ -9201,8 +9174,10 @@ proc et-dg-runtest { runtest testcases f
+            if { [info procs check_effective_target_${target}_runtime]
+                 != [list] && [check_effective_target_${target}_runtime] } {
+                set dg-do-what-default run
++               set do-what-limit run
+            }
+            $runtest $testcases $target_flags ${default-extra-flags}
++           unset do-what-limit
+        }
+     } else {
+        set et_index 0
+@@ -10789,6 +10764,7 @@ proc check_effective_target_sigsetjmp {}
+ proc check_vect_support_and_set_flags { } {
+     global DEFAULT_VECTCFLAGS
+     global dg-do-what-default
++    global do-what-limit
+     global EFFECTIVE_TARGETS
+ 
+     if  [istarget powerpc-*paired*]  {
+@@ -10797,6 +10773,7 @@ proc check_vect_support_and_set_flags {
+             set dg-do-what-default run
+         } else {
+             set dg-do-what-default compile
++            set do-what-limit link
+         }
+     } elseif [istarget powerpc*-*-*] {
+         # Skip targets not supporting -maltivec.
+@@ -10821,6 +10798,7 @@ proc check_vect_support_and_set_flags {
+                 lappend DEFAULT_VECTCFLAGS "-mcpu=970"
+             }
+             set dg-do-what-default compile
++            set do-what-limit link
+         }
+     } elseif { [istarget i?86-*-*] || [istarget x86_64-*-*] } {
+         lappend DEFAULT_VECTCFLAGS "-msse2"
+@@ -10828,6 +10806,7 @@ proc check_vect_support_and_set_flags {
+             set dg-do-what-default run
+         } else {
+             set dg-do-what-default compile
++            set do-what-limit link
+         }
+     } elseif { [istarget mips*-*-*]
+               && [check_effective_target_nomips16] } {
+@@ -10847,6 +10826,7 @@ proc check_vect_support_and_set_flags {
+             set dg-do-what-default run
+         } else {
+             set dg-do-what-default compile
++            set do-what-limit link
+         }
+     } elseif [istarget alpha*-*-*] {
+         # Alpha's vectorization capabilities are extremely limited.
+@@ -10860,6 +10840,7 @@ proc check_vect_support_and_set_flags {
+             set dg-do-what-default run
+         } else {
+             set dg-do-what-default compile
++            set do-what-limit link
+         }
+     } elseif [istarget ia64-*-*] {
+         set dg-do-what-default run
+@@ -10873,6 +10854,7 @@ proc check_vect_support_and_set_flags {
+             set dg-do-what-default run
+         } else {
+             set dg-do-what-default compile
++            set do-what-limit link
+         }
+     } elseif [istarget aarch64*-*-*] {
+         set dg-do-what-default run
+@@ -10897,6 +10879,7 @@ proc check_vect_support_and_set_flags {
+         } else {
+            lappend DEFAULT_VECTCFLAGS "-march=z14" "-mzarch"
+             set dg-do-what-default compile
++            set do-what-limit link
+         }
+     } elseif [istarget amdgcn-*-*] {
+         set dg-do-what-default run
+Index: gcc-13.2.0/gcc/testsuite/gcc.target/mips/mips.exp
+===================================================================
+--- gcc-13.2.0.orig/gcc/testsuite/gcc.target/mips/mips.exp
++++ gcc-13.2.0/gcc/testsuite/gcc.target/mips/mips.exp
+@@ -709,7 +709,23 @@ proc mips_first_unsupported_option { ups
+     global mips_option_tests
+     upvar $upstatus status
+ 
++    if { [mips_have_test_option_p status "-mmsa"] } {
++        verbose -log "Found -mmsa"
++       if { ![check_mips_msa_hw_available] } {
++           verbose -log "No MSA avail"
++           return "-mmsa"
++       }
++    }
++    if { [mips_have_test_option_p status "-mloongson-mmi"] } {
++        verbose -log "Found -mloonson-mmi"
++        if { ![check_mips_loongson_mmi_hw_available] } {
++           verbose -log "No MMI avail"
++           return "-mloonson-mmi"
++       }
++    }
++
+     foreach { option code } [array get mips_option_tests] {
++
+        if { [mips_have_test_option_p status $option] } {
+            regsub -all "\n" $code "\\n\\\n" asm
+            # Use check_runtime from target-supports.exp, which caches
+Index: gcc-13.2.0/gcc/testsuite/lib/gcc-dg.exp
+===================================================================
+--- gcc-13.2.0.orig/gcc/testsuite/lib/gcc-dg.exp
++++ gcc-13.2.0/gcc/testsuite/lib/gcc-dg.exp
+@@ -240,9 +240,20 @@ proc schedule-cleanups { opts } {
+ 
+ proc gcc-dg-test-1 { target_compile prog do_what extra_tool_flags } {
+     # Set up the compiler flags, based on what we're going to do.
++    global do-what-limit
+ 
+     set options [list]
+ 
++    if [info exists do-what-limit] then {
++        # Demote run tests to $do-what-limit if set
++       switch $do_what {
++           run {
++               set do_what $do-what-limit
++               set dg-do-what $do-what-limit
++           }
++        }
++    }
++
+     switch $do_what {
+        "preprocess" {
+            set compile_type "preprocess"