From 4b7466c43899529dfd66a1a1e77369bd1f9e2d23 Mon Sep 17 00:00:00 2001
From: Lzu Tao <taolzu@gmail.com>
Date: Mon, 20 May 2024 00:21:06 +0000
Subject: [PATCH 1/2] Add codegen test for array comparision opt

---
 tests/assembly/62531-array-cmp.rs | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 tests/assembly/62531-array-cmp.rs

diff --git a/tests/assembly/62531-array-cmp.rs b/tests/assembly/62531-array-cmp.rs
new file mode 100644
index 0000000000000..beb19d5f8a6ab
--- /dev/null
+++ b/tests/assembly/62531-array-cmp.rs
@@ -0,0 +1,21 @@
+// Ensure the asm for array comparisons is properly optimized on x86.
+
+//@ min-llvm-version: 12
+//@ assembly-output: emit-asm
+//@ compile-flags: -C opt-level=2
+//@ only-x86_64
+
+#![crate_type = "lib"]
+
+// CHECK-LABEL: compare
+// CHECK: movb $1, %al
+// CHECK-NEXT: retq
+#[no_mangle]
+pub fn compare() -> bool {
+    let bytes = 12.5f32.to_ne_bytes();
+    bytes == if cfg!(target_endian = "big") {
+        [0x41, 0x48, 0x00, 0x00]
+    } else {
+        [0x00, 0x00, 0x48, 0x41]
+    }
+}

From 422de3581a8f21e7b967080ff1fb84e755b06c4a Mon Sep 17 00:00:00 2001
From: Lzu Tao <taolzu@gmail.com>
Date: Mon, 20 May 2024 15:51:24 +0000
Subject: [PATCH 2/2] make it into an IR test

---
 .../62531-array-cmp.rs => codegen/array-cmp.rs}        | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)
 rename tests/{assembly/62531-array-cmp.rs => codegen/array-cmp.rs} (56%)

diff --git a/tests/assembly/62531-array-cmp.rs b/tests/codegen/array-cmp.rs
similarity index 56%
rename from tests/assembly/62531-array-cmp.rs
rename to tests/codegen/array-cmp.rs
index beb19d5f8a6ab..8c6e6623146b4 100644
--- a/tests/assembly/62531-array-cmp.rs
+++ b/tests/codegen/array-cmp.rs
@@ -1,15 +1,11 @@
-// Ensure the asm for array comparisons is properly optimized on x86.
+// Ensure the asm for array comparisons is properly optimized.
 
-//@ min-llvm-version: 12
-//@ assembly-output: emit-asm
 //@ compile-flags: -C opt-level=2
-//@ only-x86_64
 
 #![crate_type = "lib"]
 
-// CHECK-LABEL: compare
-// CHECK: movb $1, %al
-// CHECK-NEXT: retq
+// CHECK-LABEL: @compare
+// CHECK-NEXT: ret i1 true
 #[no_mangle]
 pub fn compare() -> bool {
     let bytes = 12.5f32.to_ne_bytes();