Merge pull request #666 from FractalFir/master

Fixed a recursive inling bug, added a test for it

tests/run/always_inline.rs

@@ -0,0 +1,53 @@
+// Compiler:
+//
+// Run-time:
+//   status: 0
+
+#![feature(no_core)]
+#![no_std]
+#![no_core]
+#![no_main]
+
+extern crate mini_core;
+use mini_core::*;
+
+#[inline(always)]
+fn fib(n: u8) -> u8 {
+    if n == 0 {
+        return 1;
+    }
+    if n == 1 {
+        return 1;
+    }
+    fib(n - 1) + fib(n - 2)
+}
+
+#[inline(always)]
+fn fib_b(n: u8) -> u8 {
+    if n == 0 {
+        return 1;
+    }
+    if n == 1 {
+        return 1;
+    }
+    fib_a(n - 1) + fib_a(n - 2)
+}
+
+#[inline(always)]
+fn fib_a(n: u8) -> u8 {
+    if n == 0 {
+        return 1;
+    }
+    if n == 1 {
+        return 1;
+    }
+    fib_b(n - 1) + fib_b(n - 2)
+}
+
+#[no_mangle]
+extern "C" fn main(argc: i32, _argv: *const *const u8) -> i32 {
+    if fib(2) != fib_a(2) {
+        intrinsics::abort();
+    }
+    0
+}