[Attributor] Add pre-commit tests

Author: elhewaty

llvm/test/Transforms/Attributor/remove_out_args.ll

@@ -0,0 +1,20 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
+; RUN: opt -S -passes=attributor < %s | FileCheck %s
+
+
+
+define internal i1 @foo(ptr %dst) {
+entry:
+  store i32 42, ptr %dst
+  ret i1 true
+}
+
+
+define i1 @fee(i32 %x, i32 %y) {
+  %ptr = alloca i32
+  %a = call i1 @foo(ptr %ptr, i32 %y)
+  %b = load i32, ptr %ptr
+  %c = icmp sle i32 %b, %x
+  %xor = xor i1 %a, %c
+  ret i1 %xor
+}