pr feedback - take the instruction count bump out of Dockerfile

Author: Jamesbarford

ci/docker/aarch64_be-unknown-linux-gnu/Dockerfile

@@ -28,6 +28,3 @@ ENV CARGO_TARGET_AARCH64_BE_UNKNOWN_LINUX_GNU_LINKER="${AARCH64_BE_TOOLCHAIN}/bi
 ENV CARGO_TARGET_AARCH64_BE_UNKNOWN_LINUX_GNU_RUNNER="qemu-aarch64_be -cpu max -L ${AARCH64_BE_LIBC}"
 ENV OBJDUMP="${AARCH64_BE_TOOLCHAIN}/bin/aarch64_be-none-linux-gnu-objdump"
 ENV STDARCH_TEST_SKIP_FEATURE=tme
-# The table instructions, while correct, generate some rev64 instructions which
-# increases the number of instructions generated
-ENV STDARCH_ASSERT_INSTR_LIMIT=32

crates/stdarch-test/src/lib.rs

@@ -164,7 +164,15 @@ pub fn assert(shim_addr: usize, fnname: &str, expected: &str) {
                 // Original limit was 20 instructions, but ARM DSP Intrinsics
                 // are exactly 20 instructions long. So, bump the limit to 22
                 // instead of adding here a long list of exceptions.
-                _ => 22,
+                _ => {
+                    // aarch64_be may add reverse instructions which increases
+                    // the number of instructions generated.
+                    if cfg!(all(target_endian = "big", target_arch = "aarch64")) {
+                        32
+                    } else {
+                        22
+                    }
+                }
             },
             |v| v.parse().unwrap(),
         );