From 698f8c2f01ea549d77d7dc3338a12e04c11057b9 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 14:02:58 +0200
Subject: Adding upstream version 1.64.0+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 src/test/mir-opt/lower_array_len.rs | 47 +++++++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100644 src/test/mir-opt/lower_array_len.rs

(limited to 'src/test/mir-opt/lower_array_len.rs')

diff --git a/src/test/mir-opt/lower_array_len.rs b/src/test/mir-opt/lower_array_len.rs
new file mode 100644
index 000000000..fc12ee75f
--- /dev/null
+++ b/src/test/mir-opt/lower_array_len.rs
@@ -0,0 +1,47 @@
+// compile-flags: -Z mir-opt-level=4
+
+// EMIT_MIR lower_array_len.array_bound.NormalizeArrayLen.diff
+// EMIT_MIR lower_array_len.array_bound.SimplifyLocals.diff
+// EMIT_MIR lower_array_len.array_bound.InstCombine.diff
+pub fn array_bound<const N: usize>(index: usize, slice: &[u8; N]) -> u8 {
+    if index < slice.len() {
+        slice[index]
+    } else {
+        42
+    }
+}
+
+// EMIT_MIR lower_array_len.array_bound_mut.NormalizeArrayLen.diff
+// EMIT_MIR lower_array_len.array_bound_mut.SimplifyLocals.diff
+// EMIT_MIR lower_array_len.array_bound_mut.InstCombine.diff
+pub fn array_bound_mut<const N: usize>(index: usize, slice: &mut [u8; N]) -> u8 {
+    if index < slice.len() {
+        slice[index]
+    } else {
+        slice[0] = 42;
+
+        42
+    }
+}
+
+// EMIT_MIR lower_array_len.array_len.NormalizeArrayLen.diff
+// EMIT_MIR lower_array_len.array_len.SimplifyLocals.diff
+// EMIT_MIR lower_array_len.array_len.InstCombine.diff
+pub fn array_len<const N: usize>(arr: &[u8; N]) -> usize {
+    arr.len()
+}
+
+// EMIT_MIR lower_array_len.array_len_by_value.NormalizeArrayLen.diff
+// EMIT_MIR lower_array_len.array_len_by_value.SimplifyLocals.diff
+// EMIT_MIR lower_array_len.array_len_by_value.InstCombine.diff
+pub fn array_len_by_value<const N: usize>(arr: [u8; N]) -> usize {
+    arr.len()
+}
+
+fn main() {
+    let _ = array_bound(3, &[0, 1, 2, 3]);
+    let mut tmp = [0, 1, 2, 3, 4];
+    let _ = array_bound_mut(3, &mut [0, 1, 2, 3]);
+    let _ = array_len(&[0]);
+    let _ = array_len_by_value([0, 2]);
+}
-- 
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