Bump MSRV to 1.73.0, use 1.75.0 in CI

Cargo.toml

@@ -133,7 +133,7 @@ authors = ["The Wasmtime Project Developers"]
 edition = "2021"
 # Wasmtime's current policy is that this number can be no larger than the
 # current stable release of Rust minus 2.
-rust-version = "1.72.0"
+rust-version = "1.73.0"
 
 [workspace.lints.rust]
 # Turn on some lints which are otherwise allow-by-default in rustc.

cranelift/codegen/src/isle_prelude.rs

@@ -819,7 +819,7 @@ macro_rules! isle_common_prelude_methods {
         }
 
         #[inline]
-        fn signed_cond_code(&mut self, cc: &condcodes::IntCC) -> Option<condcodes::IntCC> {
+        fn signed_cond_code(&mut self, cc: &IntCC) -> Option<IntCC> {
             match cc {
                 IntCC::Equal
                 | IntCC::UnsignedGreaterThanOrEqual

cranelift/codegen/src/machinst/isle.rs

@@ -7,8 +7,8 @@ use std::cell::Cell;
 pub use super::MachLabel;
 use super::RetPair;
 pub use crate::ir::{
-    condcodes, condcodes::CondCode, dynamic_to_fixed, Constant, DynamicStackSlot, ExternalName,
-    FuncRef, GlobalValue, Immediate, SigRef, StackSlot,
+    condcodes::CondCode, dynamic_to_fixed, Constant, DynamicStackSlot, ExternalName, FuncRef,
+    GlobalValue, Immediate, SigRef, StackSlot,
 };
 pub use crate::isa::{unwind::UnwindInst, TargetIsa};
 pub use crate::machinst::{

cranelift/codegen/src/machinst/mod.rs

@@ -81,6 +81,7 @@ pub use buffer::*;
 pub mod helpers;
 pub use helpers::*;
 pub mod inst_common;
+#[allow(unused_imports)] // not used in all backends right now
 pub use inst_common::*;
 pub mod valueregs;
 pub use reg::*;

cranelift/codegen/src/opts.rs

@@ -1,7 +1,6 @@
 //! Optimization driver using ISLE rewrite rules on an egraph.
 
 use crate::egraph::{NewOrExistingInst, OptimizeCtx};
-use crate::ir::condcodes;
 pub use crate::ir::condcodes::{FloatCC, IntCC};
 use crate::ir::dfg::ValueDef;
 pub use crate::ir::immediates::{Ieee32, Ieee64, Imm64, Offset32, Uimm8, V128Imm};