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Rollup merge of #79951 - LeSeulArtichaut:ty-ir, r=nikomatsakis

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Refractor a few more types to `rustc_type_ir`

In the continuation of #79169, ~~blocked on that PR~~.

This PR:
 - moves `IntVarValue`, `FloatVarValue`, `InferTy` (and friends) and `Variance`
 - creates the `IntTy`, `UintTy` and `FloatTy` enums in `rustc_type_ir`, based on their `ast` and `chalk_ir` equilavents, and uses them for types in the rest of the compiler.

~~I will split up that commit to make this easier to review and to have a better commit history.~~
EDIT: done, I split the PR in commits of 200-ish lines each

r? `````@nikomatsakis````` cc `````@jackh726`````
This commit is contained in:
Yuki Okushi 2021-01-28 15:09:02 +09:00 • committed by GitHub
commit 446edd1e1a
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46 changed files with 818 additions and 565 deletions
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20
compiler/rustc_codegen_ssa/src/mir/block.rs
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@ -875,20 +875,16 @@ impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> {
ty::Uint(_) => value.to_string(),
ty::Int(int_ty) => {
match int_ty.normalize(bx.tcx().sess.target.pointer_width) {
ast::IntTy::I8 => (value as i8).to_string(),
ast::IntTy::I16 => (value as i16).to_string(),
ast::IntTy::I32 => (value as i32).to_string(),
ast::IntTy::I64 => (value as i64).to_string(),
ast::IntTy::I128 => (value as i128).to_string(),
ast::IntTy::Isize => unreachable!(),
ty::IntTy::I8 => (value as i8).to_string(),
ty::IntTy::I16 => (value as i16).to_string(),
ty::IntTy::I32 => (value as i32).to_string(),
ty::IntTy::I64 => (value as i64).to_string(),
ty::IntTy::I128 => (value as i128).to_string(),
ty::IntTy::Isize => unreachable!(),
}
}
ty::Float(ast::FloatTy::F32) => {
f32::from_bits(value as u32).to_string()
}
ty::Float(ast::FloatTy::F64) => {
f64::from_bits(value as u64).to_string()
}
ty::Float(ty::FloatTy::F32) => f32::from_bits(value as u32).to_string(),
ty::Float(ty::FloatTy::F64) => f64::from_bits(value as u64).to_string(),
_ => span_bug!(span, "asm const has bad type {}", ty),
};
InlineAsmOperandRef::Const { string }