From 83fe2a110677ff36b214f9eba7429c57d4896345 Mon Sep 17 00:00:00 2001
From: Alan Li <alan.li@me.com>
Date: Wed, 20 Nov 2019 14:59:07 -0500
Subject: [PATCH] Issue #27: adding another loop test.

---
 test/CodeGen/EVM/runtime_tests/loop2.ll | 34 +++++++++++++++++++++++++
 tools/evm-test/evm_test.py              |  4 +++
 2 files changed, 38 insertions(+)
 create mode 100644 test/CodeGen/EVM/runtime_tests/loop2.ll

diff --git a/test/CodeGen/EVM/runtime_tests/loop2.ll b/test/CodeGen/EVM/runtime_tests/loop2.ll
new file mode 100644
index 0000000000000..928407b8864c0
--- /dev/null
+++ b/test/CodeGen/EVM/runtime_tests/loop2.ll
@@ -0,0 +1,34 @@
+; Function Attrs: noinline nounwind optnone ssp uwtable
+define i256 @abc(i256, i256) #0 {
+  %3 = alloca i256, align 4
+  %4 = alloca i256, align 4
+  %5 = alloca i256, align 4
+  store i256 %0, i256* %3, align 4
+  store i256 %1, i256* %4, align 4
+  store i256 0, i256* %5, align 4
+  br label %6
+
+; <label>:6:                                      ; preds = %14, %2
+  %7 = load i256, i256* %5, align 4
+  %8 = load i256, i256* %4, align 4
+  %9 = icmp ult i256 %7, %8
+  br i1 %9, label %10, label %17
+
+; <label>:10:                                     ; preds = %6
+  %11 = load i256, i256* %3, align 4
+  %12 = load i256, i256* %3, align 4
+  %13 = add i256 %12, %11
+  store i256 %13, i256* %3, align 4
+  br label %14
+
+; <label>:14:                                     ; preds = %10
+  %15 = load i256, i256* %5, align 4
+  %16 = add i256 %15, 1
+  store i256 %16, i256* %5, align 4
+  br label %6
+
+; <label>:17:                                     ; preds = %6
+  %18 = load i256, i256* %3, align 4
+  ret i256 %18
+}
+
diff --git a/tools/evm-test/evm_test.py b/tools/evm-test/evm_test.py
index a6d4eb22cf127..4d066f8028565 100755
--- a/tools/evm-test/evm_test.py
+++ b/tools/evm-test/evm_test.py
@@ -215,6 +215,10 @@ def run_string_input(name: str, inputs: List[str], output: str, function: str) -
     "input":  ["0x00001000", "0x00000001"],
     "output": "0x00000000000000000000000000000000000000000000000000000100a",
   },
+  "loop2.ll" : {
+    "input":  ["0x00001000", "0x0000000a"],
+    "output": "0x00000000000000000000000000000000000000000000000000000a000",
+  },
 }
 
 def assembly_tests() -> List[str]: