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Only compile #[used] as llvm.compiler.used for ELF targets #93718

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Merged
merged 4 commits into from
Jul 21, 2022
Merged

Only compile #[used] as llvm.compiler.used for ELF targets #93718

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54133cf
Only compile #[used] as llvm.compiler.used for ELF targets
thomcc Feb 6, 2022
16c2b39
Add a test that `#[used]` makes it through to the linker on macos
thomcc Feb 7, 2022
da72295
Fix mixup between `llvm.compiler.used` and `llvm.used` in comment
thomcc Mar 24, 2022
a64b2a9
Move `#[used]` check for Mach-O to `rustc_typeck` from `rustc_codegen…
thomcc May 11, 2022
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Add a test that #[used] makes it through to the linker on macos
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@thomcc
thomcc committed May 11, 2022
commit 16c2b39e1c5029913daf7b780c2cbea7477e077c
11 changes: 11 additions & 0 deletions src/test/run-make-fulldeps/used-cdylib-macos/Makefile
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-include ../tools.mk

# only-macos
#
# This checks that `#[used]` passes through to the linker on
# darwin. This is subject to change in the future, see
# https://github.com/rust-lang/rust/pull/93718 for discussion

all:
$(RUSTC) -Copt-level=3 dylib_used.rs
nm $(TMPDIR)/libdylib_used.dylib | $(CGREP) VERY_IMPORTANT_SYMBOL
4 changes: 4 additions & 0 deletions src/test/run-make-fulldeps/used-cdylib-macos/dylib_used.rs
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#![crate_type = "cdylib"]

#[used]
static VERY_IMPORTANT_SYMBOL: u32 = 12345;