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| author | Guillaume Gomez <guillaume1.gomez@gmail.com> | 2025-07-21 14:34:12 +0200 |
|---|---|---|
| committer | Guillaume Gomez <guillaume1.gomez@gmail.com> | 2025-07-22 14:28:48 +0200 |
| commit | a27f3e3fd1e4d16160f8885b6b06665b5319f56c (patch) | |
| tree | b033935392cbadf6f85d2dbddf433a88e323aeeb /tests/codegen-llvm/vec-with-capacity.rs | |
| parent | ed93c1783b404d728d4809973a0550eb33cd293f (diff) | |
| download | rust-a27f3e3fd1e4d16160f8885b6b06665b5319f56c.tar.gz rust-a27f3e3fd1e4d16160f8885b6b06665b5319f56c.zip | |
Rename `tests/codegen` into `tests/codegen-llvm`
Diffstat (limited to 'tests/codegen-llvm/vec-with-capacity.rs')
| -rw-r--r-- | tests/codegen-llvm/vec-with-capacity.rs | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/tests/codegen-llvm/vec-with-capacity.rs b/tests/codegen-llvm/vec-with-capacity.rs new file mode 100644 index 00000000000..777bbcc4fcb --- /dev/null +++ b/tests/codegen-llvm/vec-with-capacity.rs @@ -0,0 +1,35 @@ +//@ compile-flags: -Copt-level=3 +//@ ignore-std-debug-assertions +// (with debug assertions turned on, `assert_unchecked` generates a real assertion) + +#![crate_type = "lib"] +#![feature(try_with_capacity)] + +// CHECK-LABEL: @with_capacity_does_not_grow1 +#[no_mangle] +pub fn with_capacity_does_not_grow1() -> Vec<u32> { + let v = Vec::with_capacity(1234); + // CHECK: call {{.*}}__rust_alloc( + // CHECK-NOT: call {{.*}}__rust_realloc + // CHECK-NOT: call {{.*}}capacity_overflow + // CHECK-NOT: call {{.*}}finish_grow + // CHECK-NOT: call {{.*}}reserve + // CHECK-NOT: memcpy + // CHECK-NOT: memset + v +} + +// CHECK-LABEL: @try_with_capacity_does_not_grow2 +#[no_mangle] +pub fn try_with_capacity_does_not_grow2() -> Option<Vec<Vec<u8>>> { + let v = Vec::try_with_capacity(1234).ok()?; + // CHECK: call {{.*}}__rust_alloc( + // CHECK-NOT: call {{.*}}__rust_realloc + // CHECK-NOT: call {{.*}}capacity_overflow + // CHECK-NOT: call {{.*}}finish_grow + // CHECK-NOT: call {{.*}}handle_alloc_error + // CHECK-NOT: call {{.*}}reserve + // CHECK-NOT: memcpy + // CHECK-NOT: memset + Some(v) +} |