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)
15 lines
339 B
Rust
15 lines
339 B
Rust
// compile-flags: -O -C no-prepopulate-passes
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#![crate_type = "lib"]
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// CHECK-LABEL: define{{.*}}i32 @test(i32 %a, i32 %b)
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#[no_mangle]
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pub fn test(a: u32, b: u32) -> u32 {
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let c = a + b;
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// CHECK: %c = add i32 %a, %b
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let d = c;
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let e = d * a;
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// CHECK-NEXT: %e = mul i32 %c, %a
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e
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// CHECK-NEXT: ret i32 %e
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}
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