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rust/tests/codegen/stores.rs

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Revamp codegen tests to check IR quality instead of quantity The current codegen tests only compare IR line counts between similar rust and C programs, the latter getting compiled with clang. That looked like a good idea back then, but actually things like lifetime intrinsics mean that less IR isn't always better, so the metric isn't really helpful. Instead, we can start doing tests that check specific aspects of the generated IR, like attributes or metadata. To do that, we can use LLVM's FileCheck tool which has a number of useful features for such tests. To start off, I created some tests for a few things that were recently added and/or broken.
2015-05-24 16:07:52 +00:00
//@ compile-flags: -C no-prepopulate-passes
Remove redundant `ignore-tidy-linelength` annotations This is step 2 towards fixing #77548. In the codegen and codegen-units test suites, the `//` comment markers were kept in order not to affect any source locations. This is because these tests cannot be automatically `--bless`ed.
2021-04-03 11:05:11 +00:00
//
Revamp codegen tests to check IR quality instead of quantity The current codegen tests only compare IR line counts between similar rust and C programs, the latter getting compiled with clang. That looked like a good idea back then, but actually things like lifetime intrinsics mean that less IR isn't always better, so the metric isn't really helpful. Instead, we can start doing tests that check specific aspects of the generated IR, like attributes or metadata. To do that, we can use LLVM's FileCheck tool which has a number of useful features for such tests. To start off, I created some tests for a few things that were recently added and/or broken.
2015-05-24 16:07:52 +00:00
Avoid loading the whole gdb debug scripts section. This is so LLVM isn't forced to load every byte of it. Also sets the alignment of the load. Adds a test for the debug script section.
2015-09-15 21:22:16 +00:00
#![crate_type = "lib"]
Revamp codegen tests to check IR quality instead of quantity The current codegen tests only compare IR line counts between similar rust and C programs, the latter getting compiled with clang. That looked like a good idea back then, but actually things like lifetime intrinsics mean that less IR isn't always better, so the metric isn't really helpful. Instead, we can start doing tests that check specific aspects of the generated IR, like attributes or metadata. To do that, we can use LLVM's FileCheck tool which has a number of useful features for such tests. To start off, I created some tests for a few things that were recently added and/or broken.
2015-05-24 16:07:52 +00:00
pub struct Bytes {
Run rustfmt on `tests/codegen/`. Except for `simd-intrinsic/`, which has a lot of files containing multiple types like `u8x64` which really are better when hand-formatted. There is a surprising amount of two-space indenting in this directory. Non-trivial changes: - `rustfmt::skip` needed in `debug-column.rs` to preserve meaning of the test. - `rustfmt::skip` used in a few places where hand-formatting read more nicely: `enum/enum-match.rs` - Line number adjustments needed for the expected output of `debug-column.rs` and `coroutine-debug.rs`.
2024-05-29 04:11:20 +00:00
a: u8,
b: u8,
c: u8,
d: u8,
Revamp codegen tests to check IR quality instead of quantity The current codegen tests only compare IR line counts between similar rust and C programs, the latter getting compiled with clang. That looked like a good idea back then, but actually things like lifetime intrinsics mean that less IR isn't always better, so the metric isn't really helpful. Instead, we can start doing tests that check specific aspects of the generated IR, like attributes or metadata. To do that, we can use LLVM's FileCheck tool which has a number of useful features for such tests. To start off, I created some tests for a few things that were recently added and/or broken.
2015-05-24 16:07:52 +00:00
}
// CHECK-LABEL: small_array_alignment
// The array is stored as i32, but its alignment is lower, go with 1 byte to avoid target
// dependent alignment
#[no_mangle]
tests: Use arguments in codegen/stores.rs to turn aggregates into immediates.
2016-03-06 12:28:11 +00:00
pub fn small_array_alignment(x: &mut [i8; 4], y: [i8; 4]) {
Run rustfmt on `tests/codegen/`. Except for `simd-intrinsic/`, which has a lot of files containing multiple types like `u8x64` which really are better when hand-formatted. There is a surprising amount of two-space indenting in this directory. Non-trivial changes: - `rustfmt::skip` needed in `debug-column.rs` to preserve meaning of the test. - `rustfmt::skip` used in a few places where hand-formatting read more nicely: `enum/enum-match.rs` - Line number adjustments needed for the expected output of `debug-column.rs` and `coroutine-debug.rs`.
2024-05-29 04:11:20 +00:00
// CHECK: [[TMP:%.+]] = alloca [4 x i8], align 4
// CHECK: %y = alloca [4 x i8], align 1
// CHECK: store i32 %0, ptr [[TMP]]
// CHECK: call void @llvm.memcpy.{{.*}}(ptr align 1 {{.+}}, ptr align 4 {{.+}}, i{{[0-9]+}} 4, i1 false)
tests: Use arguments in codegen/stores.rs to turn aggregates into immediates.
2016-03-06 12:28:11 +00:00
*x = y;
Revamp codegen tests to check IR quality instead of quantity The current codegen tests only compare IR line counts between similar rust and C programs, the latter getting compiled with clang. That looked like a good idea back then, but actually things like lifetime intrinsics mean that less IR isn't always better, so the metric isn't really helpful. Instead, we can start doing tests that check specific aspects of the generated IR, like attributes or metadata. To do that, we can use LLVM's FileCheck tool which has a number of useful features for such tests. To start off, I created some tests for a few things that were recently added and/or broken.
2015-05-24 16:07:52 +00:00
}
// CHECK-LABEL: small_struct_alignment
// The struct is stored as i32, but its alignment is lower, go with 1 byte to avoid target
// dependent alignment
#[no_mangle]
tests: Use arguments in codegen/stores.rs to turn aggregates into immediates.
2016-03-06 12:28:11 +00:00
pub fn small_struct_alignment(x: &mut Bytes, y: Bytes) {
Run rustfmt on `tests/codegen/`. Except for `simd-intrinsic/`, which has a lot of files containing multiple types like `u8x64` which really are better when hand-formatted. There is a surprising amount of two-space indenting in this directory. Non-trivial changes: - `rustfmt::skip` needed in `debug-column.rs` to preserve meaning of the test. - `rustfmt::skip` used in a few places where hand-formatting read more nicely: `enum/enum-match.rs` - Line number adjustments needed for the expected output of `debug-column.rs` and `coroutine-debug.rs`.
2024-05-29 04:11:20 +00:00
// CHECK: [[TMP:%.+]] = alloca [4 x i8], align 4
// CHECK: %y = alloca [4 x i8], align 1
// CHECK: store i32 %0, ptr [[TMP]]
// CHECK: call void @llvm.memcpy.{{.*}}(ptr align 1 {{.+}}, ptr align 4 {{.+}}, i{{[0-9]+}} 4, i1 false)
tests: Use arguments in codegen/stores.rs to turn aggregates into immediates.
2016-03-06 12:28:11 +00:00
*x = y;
Revamp codegen tests to check IR quality instead of quantity The current codegen tests only compare IR line counts between similar rust and C programs, the latter getting compiled with clang. That looked like a good idea back then, but actually things like lifetime intrinsics mean that less IR isn't always better, so the metric isn't really helpful. Instead, we can start doing tests that check specific aspects of the generated IR, like attributes or metadata. To do that, we can use LLVM's FileCheck tool which has a number of useful features for such tests. To start off, I created some tests for a few things that were recently added and/or broken.
2015-05-24 16:07:52 +00:00
}
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