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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
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//@ compile-flags: -Copt-level=3 -C no-prepopulate-passes
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#![crate_type = "lib"]
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// Ensure that MIR optimizations have cleaned things up enough that the IR we
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// emit is good even without running the LLVM optimizations.
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// CHECK-NOT: define
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// CHECK-LABEL: define{{.+}}void @call_for_zero_to_n
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#[no_mangle]
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pub fn call_for_zero_to_n(n: u32, f: fn(u32)) {
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// CHECK: start:
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// CHECK-NOT: alloca
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// CHECK: %[[IND:.+]] = alloca [4 x i8]
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// CHECK-NEXT: %[[ALWAYS_SOME_OPTION:.+]] = alloca
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// CHECK-NOT: alloca
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// CHECK: store i32 0, ptr %[[IND]],
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// CHECK: br label %[[HEAD:.+]]
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// CHECK: [[HEAD]]:
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// CHECK: %[[T1:.+]] = load i32, ptr %[[IND]],
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// CHECK: %[[NOT_DONE:.+]] = icmp ult i32 %[[T1]], %n
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// CHECK: br i1 %[[NOT_DONE]], label %[[BODY:.+]], label %[[BREAK:.+]]
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// CHECK: [[BREAK]]:
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// CHECK: ret void
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// CHECK: [[BODY]]:
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// CHECK: %[[T2:.+]] = load i32, ptr %[[IND]],
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// CHECK: %[[T3:.+]] = add nuw i32 %[[T2]], 1
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// CHECK: store i32 %[[T3]], ptr %[[IND]],
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// CHECK: store i32 %[[T2]]
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// CHECK: %[[T4:.+]] = load i32
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// CHECK: call void %f(i32{{.+}}%[[T4]])
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for i in 0..n {
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f(i);
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}
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}
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// CHECK-NOT: define
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