641d3b09f4
Issue #25088 has been part of `thread_local!` for quite some time now. Historical attempts have been made to add `#[inline]` to `__getit` in #43931, #50252, and #59720, but these attempts ended up not landing at the time due to segfaults on Windows. In the interim though with `const`-initialized thread locals AFAIK this is the only remaining bug which is why you might want to use `#[thread_local]` over `thread_local!`. As a result I figured it was time to resubmit this and see how it fares on CI and if I can help debugging any issues that crop up. Closes #25088
50 lines
1.2 KiB
Rust
50 lines
1.2 KiB
Rust
// compile-flags: -O
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// aux-build:thread_local_aux.rs
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// ignore-windows FIXME(#84933)
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// ignore-wasm globals are used instead of thread locals
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// ignore-emscripten globals are used instead of thread locals
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// ignore-android does not use #[thread_local]
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#![crate_type = "lib"]
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#![feature(thread_local_const_init)]
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extern crate thread_local_aux as aux;
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use std::cell::Cell;
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thread_local!(static A: Cell<u32> = const { Cell::new(1) });
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// CHECK: [[TLS_AUX:@.+]] = external thread_local local_unnamed_addr global i64
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// CHECK: [[TLS:@.+]] = internal thread_local unnamed_addr global
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// CHECK-LABEL: @get
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#[no_mangle]
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fn get() -> u32 {
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// CHECK: %0 = load i32, i32* bitcast ({{.*}} [[TLS]] to i32*)
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// CHECK-NEXT: ret i32 %0
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A.with(|a| a.get())
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}
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// CHECK-LABEL: @set
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#[no_mangle]
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fn set(v: u32) {
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// CHECK: store i32 %0, i32* bitcast ({{.*}} [[TLS]] to i32*)
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// CHECK-NEXT: ret void
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A.with(|a| a.set(v))
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}
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// CHECK-LABEL: @get_aux
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#[no_mangle]
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fn get_aux() -> u64 {
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// CHECK: %0 = load i64, i64* [[TLS_AUX]]
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// CHECK-NEXT: ret i64 %0
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aux::A.with(|a| a.get())
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}
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// CHECK-LABEL: @set_aux
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#[no_mangle]
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fn set_aux(v: u64) {
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// CHECK: store i64 %0, i64* [[TLS_AUX]]
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// CHECK-NEXT: ret void
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aux::A.with(|a| a.set(v))
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}
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