Rollup merge of #54816 - oli-obk:double_promotion, r=alexreg

Don't try to promote already promoted out temporaries

fixes #53201

r? @eddyb

src/test/ui/consts/const-eval/double_promotion.rs

@@ -0,0 +1,17 @@
+// compile-pass
+
+#![feature(const_fn, rustc_attrs)]
+
+#[rustc_args_required_const(0)]
+pub const fn a(value: u8) -> u8 {
+    value
+}
+
+#[rustc_args_required_const(0)]
+pub fn b(_: u8) {
+    unimplemented!()
+}
+
+fn main() {
+    let _ = b(a(0));
+}