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-rw-r--r--compiler/rustc_codegen_gcc/example/mod_bench.rs37
1 files changed, 37 insertions, 0 deletions
diff --git a/compiler/rustc_codegen_gcc/example/mod_bench.rs b/compiler/rustc_codegen_gcc/example/mod_bench.rs
new file mode 100644
index 000000000..2e2b0052d
--- /dev/null
+++ b/compiler/rustc_codegen_gcc/example/mod_bench.rs
@@ -0,0 +1,37 @@
+#![feature(start, box_syntax, core_intrinsics, lang_items)]
+#![no_std]
+
+#[link(name = "c")]
+extern {}
+
+#[panic_handler]
+fn panic_handler(_: &core::panic::PanicInfo) -> ! {
+ unsafe {
+ core::intrinsics::abort();
+ }
+}
+
+#[lang="eh_personality"]
+fn eh_personality(){}
+
+// Required for rustc_codegen_llvm
+#[no_mangle]
+unsafe extern "C" fn _Unwind_Resume() {
+ core::intrinsics::unreachable();
+}
+
+#[start]
+fn main(_argc: isize, _argv: *const *const u8) -> isize {
+ for i in 2..100_000_000 {
+ black_box((i + 1) % i);
+ }
+
+ 0
+}
+
+#[inline(never)]
+fn black_box(i: u32) {
+ if i != 1 {
+ unsafe { core::intrinsics::abort(); }
+ }
+}