mirror of
https://github.com/rust-lang/rust.git
synced 2025-10-31 04:57:19 +00:00
91af4aa2e2
This means that things like `<usize as Step>::forward_unchecked` and `<PartialOrd for f32>::le` will inline even if we've already done a bunch of inlining to find the calls to them.
45 lines
1.2 KiB
Rust
45 lines
1.2 KiB
Rust
//@ ignore-std-debug-assertions
|
|
//@ compile-flags: -Copt-level=3 -C no-prepopulate-passes
|
|
|
|
#![crate_type = "lib"]
|
|
|
|
// Ensure that MIR optimizations have cleaned things up enough that the IR we
|
|
// emit is good even without running the LLVM optimizations.
|
|
|
|
// CHECK-NOT: define
|
|
|
|
// CHECK-LABEL: define{{.+}}void @call_for_zero_to_n
|
|
#[no_mangle]
|
|
pub fn call_for_zero_to_n(n: u32, f: fn(u32)) {
|
|
// CHECK: start:
|
|
// CHECK-NOT: alloca
|
|
// CHECK: %[[IND:.+]] = alloca [4 x i8]
|
|
// CHECK-NEXT: %[[ALWAYS_SOME_OPTION:.+]] = alloca
|
|
// CHECK-NOT: alloca
|
|
// CHECK: store i32 0, ptr %[[IND]],
|
|
// CHECK: br label %[[HEAD:.+]]
|
|
|
|
// CHECK: [[HEAD]]:
|
|
// CHECK: %[[T1:.+]] = load i32, ptr %[[IND]],
|
|
// CHECK: %[[NOT_DONE:.+]] = icmp ult i32 %[[T1]], %n
|
|
// CHECK: br i1 %[[NOT_DONE]], label %[[BODY:.+]], label %[[BREAK:.+]]
|
|
|
|
// CHECK: [[BREAK]]:
|
|
// CHECK: ret void
|
|
|
|
// CHECK: [[BODY]]:
|
|
// CHECK: %[[T2:.+]] = load i32, ptr %[[IND]],
|
|
// CHECK: %[[T3:.+]] = add nuw i32 %[[T2]], 1
|
|
// CHECK: store i32 %[[T3]], ptr %[[IND]],
|
|
|
|
// CHECK: store i32 %[[T2]]
|
|
// CHECK: %[[T4:.+]] = load i32
|
|
// CHECK: call void %f(i32{{.+}}%[[T4]])
|
|
|
|
for i in 0..n {
|
|
f(i);
|
|
}
|
|
}
|
|
|
|
// CHECK-NOT: define
|