7aa413d592
Make codegen choose whether to emit overflow checks ConstProp and DataflowConstProp currently have a specific code path not to propagate constants when they overflow. This is meant to have the correct behaviour when inlining from a crate with overflow checks (like `core`) into a crate compiled without. This PR shifts the behaviour change to the `Assert(Overflow*)` MIR terminators: if the crate is compiled without overflow checks, just skip emitting the assertions. This is already what happens with `OverflowNeg`. This allows ConstProp and DataflowConstProp to transform `CheckedBinaryOp(Add, u8::MAX, 1)` into `const (0, true)`, and let codegen ignore the `true`. The interpreter is modified to conform to this behaviour. Fixes #35310 |
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| dep_graph | ||
| hir | ||
| infer | ||
| middle | ||
| mir | ||
| query | ||
| thir | ||
| traits | ||
| ty | ||
| util | ||
| arena.rs | ||
| error.rs | ||
| lib.rs | ||
| lint.rs | ||
| macros.rs | ||
| metadata.rs | ||
| tests.rs | ||
| thir.rs | ||
| values.rs | ||