2f000a78bf
This should have no real effect in most cases, as e.g. `hidden`
visibility already implies `dso_local` (or at least LLVM IR does not
preserve the `dso_local` setting if the item is already `hidden`), but
it should fix `-Crelocation-model=static` and improve codegen in
executables.
Note that this PR does not exhaustively port the logic in [clang]. Only
the obviously correct portion and what is necessary to fix a regression
from LLVM 12 that relates to `-Crelocation_model=static`.
Fixes #83335
[clang]: 3001d080c8/clang/lib/CodeGen/CodeGenModule.cpp (L945-L1039)
42 lines
976 B
Rust
42 lines
976 B
Rust
// compile-flags: -C no-prepopulate-passes
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#![crate_type = "lib"]
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#![feature(naked_functions)]
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// CHECK: Function Attrs: naked
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// CHECK-NEXT: define{{.*}}void @naked_empty()
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#[no_mangle]
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#[naked]
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pub fn naked_empty() {
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// CHECK-NEXT: {{.+}}:
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// CHECK-NEXT: ret void
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}
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// CHECK: Function Attrs: naked
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#[no_mangle]
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#[naked]
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// CHECK-NEXT: define{{.*}}void @naked_with_args(i{{[0-9]+( %a)?}})
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pub fn naked_with_args(a: isize) {
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// CHECK-NEXT: {{.+}}:
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// CHECK: ret void
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}
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// CHECK: Function Attrs: naked
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// CHECK-NEXT: define{{.*}}i{{[0-9]+}} @naked_with_return()
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#[no_mangle]
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#[naked]
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pub fn naked_with_return() -> isize {
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// CHECK-NEXT: {{.+}}:
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// CHECK-NEXT: ret i{{[0-9]+}} 0
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0
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}
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// CHECK: Function Attrs: naked
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// CHECK-NEXT: define{{.*}}i{{[0-9]+}} @naked_with_args_and_return(i{{[0-9]+( %a)?}})
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#[no_mangle]
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#[naked]
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pub fn naked_with_args_and_return(a: isize) -> isize {
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// CHECK-NEXT: {{.+}}:
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// CHECK: ret i{{[0-9]+}} 0
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0
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}
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