Remove indexmap/std from wgsl-in (#7586)

Author: bushrat011899

naga/Cargo.toml

@@ -58,13 +58,7 @@ arbitrary = [
 ]
 spv-in = ["dep:petgraph", "dep:spirv"]
 spv-out = ["dep:spirv"]
-wgsl-in = [
-    "dep:hexf-parse",
-    "dep:strum",
-    "dep:unicode-ident",
-    "indexmap/std",
-    "compact",
-]
+wgsl-in = ["dep:hexf-parse", "dep:strum", "dep:unicode-ident", "compact"]
 wgsl-out = []
 
 ## Enables outputting to HLSL (Microsoft's High-Level Shader Language).

naga/src/diagnostic_filter.rs

@@ -4,12 +4,12 @@ use alloc::boxed::Box;
 
 use crate::{Arena, Handle};
 
+#[cfg(feature = "wgsl-in")]
+use crate::FastIndexMap;
 #[cfg(feature = "wgsl-in")]
 use crate::Span;
 #[cfg(feature = "arbitrary")]
 use arbitrary::Arbitrary;
-#[cfg(feature = "wgsl-in")]
-use indexmap::IndexMap;
 #[cfg(feature = "deserialize")]
 use serde::Deserialize;
 #[cfg(feature = "serialize")]
@@ -133,7 +133,7 @@ pub(crate) enum ShouldConflictOnFullDuplicate {
 /// [`add`]: DiagnosticFilterMap::add
 #[derive(Clone, Debug, Default)]
 #[cfg(feature = "wgsl-in")]
-pub(crate) struct DiagnosticFilterMap(IndexMap<FilterableTriggeringRule, (Severity, Span)>);
+pub(crate) struct DiagnosticFilterMap(FastIndexMap<FilterableTriggeringRule, (Severity, Span)>);
 
 #[cfg(feature = "wgsl-in")]
 impl DiagnosticFilterMap {