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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:02:58 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:02:58 +0000
commit698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch)
tree173a775858bd501c378080a10dca74132f05bc50 /src/test/codegen/enum-bounds-check-derived-idx.rs
parentInitial commit. (diff)
downloadrustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz
rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/test/codegen/enum-bounds-check-derived-idx.rs')
-rw-r--r--src/test/codegen/enum-bounds-check-derived-idx.rs26
1 files changed, 26 insertions, 0 deletions
diff --git a/src/test/codegen/enum-bounds-check-derived-idx.rs b/src/test/codegen/enum-bounds-check-derived-idx.rs
new file mode 100644
index 000000000..fe02aeb5f
--- /dev/null
+++ b/src/test/codegen/enum-bounds-check-derived-idx.rs
@@ -0,0 +1,26 @@
+// This test checks an optimization that is not guaranteed to work. This test case should not block
+// a future LLVM update.
+// compile-flags: -O
+
+#![crate_type = "lib"]
+
+pub enum Bar {
+ A = 1,
+ B = 3,
+}
+
+// CHECK-LABEL: @lookup_inc
+#[no_mangle]
+pub fn lookup_inc(buf: &[u8; 5], f: Bar) -> u8 {
+ // FIXME: panic check can be removed by adding the assumes back after https://github.com/rust-lang/rust/pull/98332
+ // CHECK: panic_bounds_check
+ buf[f as usize + 1]
+}
+
+// CHECK-LABEL: @lookup_dec
+#[no_mangle]
+pub fn lookup_dec(buf: &[u8; 5], f: Bar) -> u8 {
+ // FIXME: panic check can be removed by adding the assumes back after https://github.com/rust-lang/rust/pull/98332
+ // CHECK: panic_bounds_check
+ buf[f as usize - 1]
+}