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Avoid wrapping constant allocations in packed structs when not necessary

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This way LLVM will set the string merging flag if the alloc is a nul
terminated string, reducing binary sizes.
This commit is contained in:
bjorn3 2025-03-14 15:56:33 +00:00
parent f7b4354283
commit a5fa12b6b9
8 changed files with 26 additions and 25 deletions
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32
tests/codegen/external-no-mangle-statics.rs
View file

@ -6,72 +6,72 @@
// `#[no_mangle]`d static variables always have external linkage, i.e., no `internal` in their
// definitions
// CHECK: @A = {{(dso_local )?}}local_unnamed_addr constant
// CHECK-DAG: @A = {{(dso_local )?}}local_unnamed_addr constant
#[no_mangle]
static A: u8 = 0;
// CHECK: @B = {{(dso_local )?}}local_unnamed_addr global
// CHECK-DAG: @B = {{(dso_local )?}}local_unnamed_addr global
#[no_mangle]
static mut B: u8 = 0;
// CHECK: @C = {{(dso_local )?}}local_unnamed_addr constant
// CHECK-DAG: @C = {{(dso_local )?}}local_unnamed_addr constant
#[no_mangle]
pub static C: u8 = 0;
// CHECK: @D = {{(dso_local )?}}local_unnamed_addr global
// CHECK-DAG: @D = {{(dso_local )?}}local_unnamed_addr global
#[no_mangle]
pub static mut D: u8 = 0;
mod private {
// CHECK: @E = {{(dso_local )?}}local_unnamed_addr constant
// CHECK-DAG: @E = {{(dso_local )?}}local_unnamed_addr constant
#[no_mangle]
static E: u8 = 0;
// CHECK: @F = {{(dso_local )?}}local_unnamed_addr global
// CHECK-DAG: @F = {{(dso_local )?}}local_unnamed_addr global
#[no_mangle]
static mut F: u8 = 0;
// CHECK: @G = {{(dso_local )?}}local_unnamed_addr constant
// CHECK-DAG: @G = {{(dso_local )?}}local_unnamed_addr constant
#[no_mangle]
pub static G: u8 = 0;
// CHECK: @H = {{(dso_local )?}}local_unnamed_addr global
// CHECK-DAG: @H = {{(dso_local )?}}local_unnamed_addr global
#[no_mangle]
pub static mut H: u8 = 0;
}
const HIDDEN: () = {
// CHECK: @I = {{(dso_local )?}}local_unnamed_addr constant
// CHECK-DAG: @I = {{(dso_local )?}}local_unnamed_addr constant
#[no_mangle]
static I: u8 = 0;
// CHECK: @J = {{(dso_local )?}}local_unnamed_addr global
// CHECK-DAG: @J = {{(dso_local )?}}local_unnamed_addr global
#[no_mangle]
static mut J: u8 = 0;
// CHECK: @K = {{(dso_local )?}}local_unnamed_addr constant
// CHECK-DAG: @K = {{(dso_local )?}}local_unnamed_addr constant
#[no_mangle]
pub static K: u8 = 0;
// CHECK: @L = {{(dso_local )?}}local_unnamed_addr global
// CHECK-DAG: @L = {{(dso_local )?}}local_unnamed_addr global
#[no_mangle]
pub static mut L: u8 = 0;
};
fn x() {
// CHECK: @M = {{(dso_local )?}}local_unnamed_addr constant
// CHECK-DAG: @M = {{(dso_local )?}}local_unnamed_addr constant
#[no_mangle]
static M: fn() = x;
// CHECK: @N = {{(dso_local )?}}local_unnamed_addr global
// CHECK-DAG: @N = {{(dso_local )?}}local_unnamed_addr global
#[no_mangle]
static mut N: u8 = 0;
// CHECK: @O = {{(dso_local )?}}local_unnamed_addr constant
// CHECK-DAG: @O = {{(dso_local )?}}local_unnamed_addr constant
#[no_mangle]
pub static O: u8 = 0;
// CHECK: @P = {{(dso_local )?}}local_unnamed_addr global
// CHECK-DAG: @P = {{(dso_local )?}}local_unnamed_addr global
#[no_mangle]
pub static mut P: u8 = 0;
}