avr32: remove explicit support

The vendor has long since switched to Arm, with the last product
reaching their official end-of-life over 11 years ago. Linux support for
the ISA was dropped 7 years ago. More importantly, this architecture was
never supported by upstream GCC, and the vendor fork is stuck at version
4.2, which FFmpeg no longer supports (as per C11 requirement).

Presumably, this is still the case given the lack of vendor support.
Indeed all of the code being removed here consisted of inline assembler
scalar optimisations. A sane C compiler should be able to perform those
automatically nowadays (with the sole exception of fast CLZ detection),
but this is moot as this architecture is evidently dead.

1 files changed, 1 insertions, 25 deletions

diff --git a/configure b/configure
index 06a72e4114..d326536744 100755
--- a/configure
+++ b/configure
@@ -2129,9 +2129,6 @@ AUTODETECT_LIBS="
 ARCH_LIST="
     aarch64
     arm
-    avr32
-    avr32_ap
-    avr32_uc
     bfin
     ia64
     loongarch
@@ -2815,7 +2812,7 @@ done
 
 aligned_stack_if_any="aarch64 ppc x86"
 fast_64bit_if_any="aarch64 ia64 mips64 parisc64 ppc64 riscv64 sparc64 x86_64"
-fast_clz_if_any="aarch64 avr32 mips ppc x86"
+fast_clz_if_any="aarch64 mips ppc x86"
 fast_unaligned_if_any="aarch64 ppc x86"
 simd_align_16_if_any="altivec neon sse"
 simd_align_32_if_any="avx"
@@ -5339,27 +5336,6 @@ elif enabled arm; then
 
     test_cflags -mfp16-format=ieee && add_cflags -mfp16-format=ieee
 
-elif enabled avr32; then
-
-    case $cpu in
-        ap7[02]0[0-2])
-            subarch="avr32_ap"
-            cpuflags="-mpart=$cpu"
-        ;;
-        ap)
-            subarch="avr32_ap"
-            cpuflags="-march=$cpu"
-        ;;
-        uc3[ab]*)
-            subarch="avr32_uc"
-            cpuflags="-mcpu=$cpu"
-        ;;
-        uc)
-            subarch="avr32_uc"
-            cpuflags="-march=$cpu"
-        ;;
-    esac
-
 elif enabled bfin; then
 
     cpuflags="-mcpu=$cpu"