LLVM Error: Instruction does not dominate all uses #22096

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mandel59 opened this issue Feb 8, 2015 · 1 comment

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I-ICE

mandel59 commented Feb 8, 2015

use E::{A,B};

#[derive(Debug, Clone)]
enum E {
    A(i64),
    B(Box<E>),
}

fn f(a: &mut E) {
    *a = match *a {
        B(ref b) => *b.clone(),
        _ => a.clone(),
    }
}

fn main() {
    let mut a = B(Box::new(A(1)));
    f(&mut a);
}

This code yields the following message during compilation:

Instruction does not dominate all uses!
  %9 = load %enum.E** %2, !nonnull !0
  %17 = bitcast %enum.E* %9 to i8*
Instruction does not dominate all uses!
  %9 = load %enum.E** %2, !nonnull !0
  %21 = bitcast %enum.E* %9 to i8*
LLVM ERROR: Broken function found, compilation aborted!

The text was updated successfully, but these errors were encountered:

jdm added the I-ICE label

ghost commented Feb 10, 2015

A duplicate of #15892, closing. Thanks for the report! :)

ghost closed this as completed

This issue was closed.

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