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Basic Block: Fix IR builder library example. (#989)

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This commit is contained in:
Nicolas B. Pierron
2019-09-06 22:27:02 +02:00
committed by Sean Stangl
parent 592f5445dd
commit 1c5711c12b
1 changed files with 12 additions and 5 deletions
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17
cranelift/frontend/src/lib.rs
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@@ -50,10 +50,12 @@
//! jump block1 //! jump block1
//! block1: //! block1:
//! z = z + y; //! z = z + y;
//! brnz y, block2; //! brnz y, block3;
//! jump block2
//! block2:
//! z = z - x; //! z = z - x;
//! return y //! return y
//! block2: //! block3:
//! y = y - x //! y = y - x
//! jump block1 //! jump block1
//! } //! }
@@ -85,6 +87,7 @@
//! let block0 = builder.create_ebb(); //! let block0 = builder.create_ebb();
//! let block1 = builder.create_ebb(); //! let block1 = builder.create_ebb();
//! let block2 = builder.create_ebb(); //! let block2 = builder.create_ebb();
//! let block3 = builder.create_ebb();
//! let x = Variable::new(0); //! let x = Variable::new(0);
//! let y = Variable::new(1); //! let y = Variable::new(1);
//! let z = Variable::new(2); //! let z = Variable::new(2);
@@ -120,8 +123,12 @@
//! } //! }
//! { //! {
//! let arg = builder.use_var(y); //! let arg = builder.use_var(y);
//! builder.ins().brnz(arg, block2, &[]); //! builder.ins().brnz(arg, block3, &[]);
//! } //! }
//! builder.ins().jump(block2, &[]);
//!
//! builder.switch_to_block(block2);
//! builder.seal_block(block2);
//! { //! {
//! let arg1 = builder.use_var(z); //! let arg1 = builder.use_var(z);
//! let arg2 = builder.use_var(x); //! let arg2 = builder.use_var(x);
@@ -133,8 +140,8 @@
//! builder.ins().return_(&[arg]); //! builder.ins().return_(&[arg]);
//! } //! }
//! //!
//! builder.switch_to_block(block2); //! builder.switch_to_block(block3);
//! builder.seal_block(block2); //! builder.seal_block(block3);
//! //!
//! { //! {
//! let arg1 = builder.use_var(y); //! let arg1 = builder.use_var(y);