8d6c973c7f
This change adds a flag for configuring control-flow protection in the LLVM backend. In Clang, this flag is exposed as `-fcf-protection` with options `none|branch|return|full`. This convention is followed for `rustc`, though as a codegen option: `rustc -Z cf-protection=<none|branch|return|full>`. Co-authored-by: BlackHoleFox <blackholefoxdev@gmail.com>
38 lines
1.1 KiB
Rust
38 lines
1.1 KiB
Rust
// Test that the correct module flags are emitted with different control-flow protection flags.
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// revisions: undefined none branch return full
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// needs-llvm-components: x86
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// [undefined] compile-flags:
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// [none] compile-flags: -Z cf-protection=none
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// [branch] compile-flags: -Z cf-protection=branch
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// [return] compile-flags: -Z cf-protection=return
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// [full] compile-flags: -Z cf-protection=full
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// compile-flags: --target x86_64-unknown-linux-gnu
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#![crate_type = "lib"]
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#![feature(no_core, lang_items)]
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#![no_core]
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#[lang="sized"]
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trait Sized { }
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// A basic test function.
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pub fn test() {
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}
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// undefined-NOT: !"cf-protection-branch"
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// undefined-NOT: !"cf-protection-return"
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// none-NOT: !"cf-protection-branch"
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// none-NOT: !"cf-protection-return"
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// branch-NOT: !"cf-protection-return"
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// branch: !"cf-protection-branch", i32 1
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// branch-NOT: !"cf-protection-return"
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// return-NOT: !"cf-protection-branch"
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// return: !"cf-protection-return", i32 1
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// return-NOT: !"cf-protection-branch"
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// full: !"cf-protection-branch", i32 1
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// full: !"cf-protection-return", i32 1
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