rust/tests/mir-opt/inline/inline_more_in_non_inline.rs
Scott McMurray 23c8ed14c9 Avoid MIR bloat in inlining
In 126578 we ended up with more binary size increases than expected.

This change attempts to avoid inlining large things into small things, to avoid that kind of increase, in cases when top-down inlining will still be able to do that inlining later.
2024-07-01 05:17:13 -07:00

47 lines
1.2 KiB
Rust

// EMIT_MIR_FOR_EACH_PANIC_STRATEGY
//@ compile-flags: -O --crate-type lib
// To avoid MIR blow-up, don't inline large callees into simple shim callers,
// but *do* inline other trivial things.
extern "Rust" {
fn other_thing(x: i32);
}
#[inline]
unsafe fn call_twice(x: i32) {
unsafe {
other_thing(x);
other_thing(x);
}
}
// EMIT_MIR inline_more_in_non_inline.monomorphic_not_inline.Inline.after.mir
#[no_mangle]
pub unsafe fn monomorphic_not_inline(x: i32) {
// CHECK-LABEL: monomorphic_not_inline
// CHECK: other_thing
// CHECK: other_thing
unsafe { call_twice(x) };
}
// EMIT_MIR inline_more_in_non_inline.marked_inline_direct.Inline.after.mir
#[inline]
pub unsafe fn marked_inline_direct(x: i32) {
// CHECK-LABEL: marked_inline_direct
// CHECK-NOT: other_thing
// CHECK: call_twice
// CHECK-NOT: other_thing
unsafe { call_twice(x) };
}
// EMIT_MIR inline_more_in_non_inline.marked_inline_indirect.Inline.after.mir
#[inline]
pub unsafe fn marked_inline_indirect(x: i32) {
// CHECK-LABEL: marked_inline_indirect
// CHECK-NOT: other_thing
// CHECK: call_twice
// CHECK-NOT: other_thing
unsafe { marked_inline_direct(x) };
}