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Nicer panic when trying to insert instruction before calling switch_to_block

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bjorn3
2018-12-24 15:02:38 +01:00
committed by Dan Gohman
parent 46d9a3cd1a
commit 95118e7244
1 changed files with 2 additions and 1 deletions
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3
lib/frontend/src/frontend.rs
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@@ -367,7 +367,8 @@ impl<'a> FunctionBuilder<'a> {
/// Returns an object with the [`InstBuilder`](../codegen/ir/builder/trait.InstBuilder.html) /// Returns an object with the [`InstBuilder`](../codegen/ir/builder/trait.InstBuilder.html)
/// trait that allows to conveniently append an instruction to the current `Ebb` being built. /// trait that allows to conveniently append an instruction to the current `Ebb` being built.
pub fn ins<'short>(&'short mut self) -> FuncInstBuilder<'short, 'a> { pub fn ins<'short>(&'short mut self) -> FuncInstBuilder<'short, 'a> {
let ebb = self.position.ebb.unwrap(); let ebb = self.position.ebb
.expect("Please call switch_to_block before inserting instructions");
FuncInstBuilder::new(self, ebb) FuncInstBuilder::new(self, ebb)
} }