f20af8d43d
Thanks to the combination of #108246 and #108442 it could already remove identity transmutes. With this PR, it can also simplify them to `IntToInt` casts, `Discriminant` reads, or `Field` projections.
25 lines
1.7 KiB
Diff
25 lines
1.7 KiB
Diff
- // MIR for `integer_transmutes` before InstCombine
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+ // MIR for `integer_transmutes` after InstCombine
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fn integer_transmutes() -> () {
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let mut _0: (); // return place in scope 0 at $DIR/combine_transmutes.rs:+0:36: +0:36
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let mut _1: u32; // in scope 0 at $SRC_DIR/core/src/intrinsics/mir.rs:LL:COL
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let mut _2: i64; // in scope 0 at $SRC_DIR/core/src/intrinsics/mir.rs:LL:COL
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let mut _3: i64; // in scope 0 at $SRC_DIR/core/src/intrinsics/mir.rs:LL:COL
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let mut _4: u32; // in scope 0 at $SRC_DIR/core/src/intrinsics/mir.rs:LL:COL
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let mut _5: usize; // in scope 0 at $SRC_DIR/core/src/intrinsics/mir.rs:LL:COL
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bb0: {
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- _1 = const 1_i32 as u32 (Transmute); // scope 0 at $SRC_DIR/core/src/intrinsics/mir.rs:LL:COL
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+ _1 = const 1_i32 as u32 (IntToInt); // scope 0 at $SRC_DIR/core/src/intrinsics/mir.rs:LL:COL
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_2 = const 1_i32 as i64 (Transmute); // scope 0 at $SRC_DIR/core/src/intrinsics/mir.rs:LL:COL
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- _3 = const 1_u64 as i64 (Transmute); // scope 0 at $SRC_DIR/core/src/intrinsics/mir.rs:LL:COL
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+ _3 = const 1_u64 as i64 (IntToInt); // scope 0 at $SRC_DIR/core/src/intrinsics/mir.rs:LL:COL
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_4 = const 1_u64 as u32 (Transmute); // scope 0 at $SRC_DIR/core/src/intrinsics/mir.rs:LL:COL
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- _5 = const 1_isize as usize (Transmute); // scope 0 at $SRC_DIR/core/src/intrinsics/mir.rs:LL:COL
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+ _5 = const 1_isize as usize (IntToInt); // scope 0 at $SRC_DIR/core/src/intrinsics/mir.rs:LL:COL
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return; // scope 0 at $DIR/combine_transmutes.rs:+8:13: +8:21
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}
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}
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