squiid/rust
1
0
Fork 0
Code Issues Pull requests Projects Activity

Rollup merge of #77161 - est31:swich_len_already_trusted, r=petrochenkov

Browse source 
Remove TrustedLen requirement from BuilderMethods::switch

The main use case of TrustedLen is allowing APIs to specialize on it,
but no use of it uses that specialization. Instead, only the .len()
function provided by ExactSizeIterator is used, which is already
required to be accurate.

Thus, the TrustedLen requirement on BuilderMethods::switch is redundant.
This commit is contained in:
Ralf Jung 2020-09-26 12:58:24 +02:00 committed by GitHub
parent 7ff5b44a58 12ada5cf4b
commit 7c47b1e5f4
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
4 changed files with 2 additions and 6 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
compiler/rustc_codegen_llvm/src/builder.rs
View file

@ -21,7 +21,6 @@ use rustc_target::abi::{self, Align, Size};
use rustc_target::spec::{HasTargetSpec, Target};
use std::borrow::Cow;
use std::ffi::CStr;
use std::iter::TrustedLen;
use std::ops::{Deref, Range};
use std::ptr;
use tracing::debug;
@ -179,7 +178,7 @@ impl BuilderMethods<'a, 'tcx> for Builder<'a, 'll, 'tcx> {
&mut self,
v: &'ll Value,
else_llbb: &'ll BasicBlock,
cases: impl ExactSizeIterator<Item = (u128, &'ll BasicBlock)> + TrustedLen,
cases: impl ExactSizeIterator<Item = (u128, &'ll BasicBlock)>,
) {
let switch =
unsafe { llvm::LLVMBuildSwitch(self.llbuilder, v, else_llbb, cases.len() as c_uint) };

1
compiler/rustc_codegen_llvm/src/lib.rs
View file

@ -12,7 +12,6 @@
#![feature(in_band_lifetimes)]
#![feature(nll)]
#![feature(or_patterns)]
#![feature(trusted_len)]
#![recursion_limit = "256"]
use back::write::{create_informational_target_machine, create_target_machine};

1
compiler/rustc_codegen_ssa/src/lib.rs
View file

@ -6,7 +6,6 @@
#![feature(in_band_lifetimes)]
#![feature(nll)]
#![feature(or_patterns)]
#![feature(trusted_len)]
#![feature(associated_type_bounds)]
#![recursion_limit = "256"]

3
compiler/rustc_codegen_ssa/src/traits/builder.rs
View file

@ -18,7 +18,6 @@ use rustc_middle::ty::Ty;
use rustc_target::abi::{Abi, Align, Scalar, Size};
use rustc_target::spec::HasTargetSpec;
use std::iter::TrustedLen;
use std::ops::Range;
#[derive(Copy, Clone)]
@ -60,7 +59,7 @@ pub trait BuilderMethods<'a, 'tcx>:
&mut self,
v: Self::Value,
else_llbb: Self::BasicBlock,
cases: impl ExactSizeIterator<Item = (u128, Self::BasicBlock)> + TrustedLen,
cases: impl ExactSizeIterator<Item = (u128, Self::BasicBlock)>,
);
fn invoke(
&mut self,