Pre-commit test (NFC)

Author: AZero13

llvm/test/CodeGen/AArch64/and-mask-variable.ll

@@ -0,0 +1,30 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -mtriple=aarch64-none-elf -verify-machineinstrs %s -o - | FileCheck %s --check-prefixes=CHECK,CHECK-SD
+; RUN: llc -mtriple=aarch64-none-elf -global-isel -verify-machineinstrs %s -o - | FileCheck %s --check-prefixes=CHECK,CHECK-GI
+
+define i32 @mask_pair(i32 %x, i32 %y) {
+; CHECK-LABEL: mask_pair:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    mov w8, #-1 // =0xffffffff
+; CHECK-NEXT:    lsl w8, w8, w1
+; CHECK-NEXT:    and w0, w8, w0
+; CHECK-NEXT:    ret
+  %shl = shl nsw i32 -1, %y
+  %and = and i32 %shl, %x
+  ret i32 %and
+}
+
+define i64 @mask_pair_64(i64 %x, i64 %y) {
+; CHECK-LABEL: mask_pair_64:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    mov x8, #-1 // =0xffffffffffffffff
+; CHECK-NEXT:    lsl x8, x8, x1
+; CHECK-NEXT:    and x0, x8, x0
+; CHECK-NEXT:    ret
+  %shl = shl nsw i64 -1, %y
+  %and = and i64 %shl, %x
+  ret i64 %and
+}
+;; NOTE: These prefixes are unused and the list is autogenerated. Do not add tests below this line:
+; CHECK-GI: {{.*}}
+; CHECK-SD: {{.*}}