From a27f3e3fd1e4d16160f8885b6b06665b5319f56c Mon Sep 17 00:00:00 2001 From: Guillaume Gomez Date: Mon, 21 Jul 2025 14:34:12 +0200 Subject: Rename `tests/codegen` into `tests/codegen-llvm` --- tests/codegen-llvm/range-loop.rs | 44 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 tests/codegen-llvm/range-loop.rs (limited to 'tests/codegen-llvm/range-loop.rs') diff --git a/tests/codegen-llvm/range-loop.rs b/tests/codegen-llvm/range-loop.rs new file mode 100644 index 00000000000..b131beb40dd --- /dev/null +++ b/tests/codegen-llvm/range-loop.rs @@ -0,0 +1,44 @@ +//@ 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 -- cgit 1.4.1-3-g733a5