From 2910f68a5240141933483b3a5db0a703648b3d24 Mon Sep 17 00:00:00 2001
From: Owen Anderson <resistor@mac.com>
Date: Fri, 28 Dec 2007 21:08:43 +0000
Subject: Add a testcase for my recent InstCombine fix, written by Nicholas.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45386 91177308-0d34-0410-b5e6-96231b3b80d8
---
 test/Transforms/InstCombine/2007-12-28-IcmpSub2.ll | 89 ++++++++++++++++++++++
 1 file changed, 89 insertions(+)
 create mode 100644 test/Transforms/InstCombine/2007-12-28-IcmpSub2.ll

(limited to 'test/Transforms/InstCombine/2007-12-28-IcmpSub2.ll')

diff --git a/test/Transforms/InstCombine/2007-12-28-IcmpSub2.ll b/test/Transforms/InstCombine/2007-12-28-IcmpSub2.ll
new file mode 100644
index 0000000000..5e95993960
--- /dev/null
+++ b/test/Transforms/InstCombine/2007-12-28-IcmpSub2.ll
@@ -0,0 +1,89 @@
+; RUN: llvm-as < %s | opt -mem2reg -instcombine | llvm-dis | grep "ret i32 1" | count 8
+
+define i32 @test1() {
+entry:
+	%z = alloca i32
+	store i32 0, i32* %z
+	%tmp = load i32* %z
+	%sub = sub i32 %tmp, 1
+	%cmp = icmp ule i32 %sub, 0
+	%retval = select i1 %cmp, i32 0, i32 1
+	ret i32 %retval
+}
+
+define i32 @test2() {
+entry:
+	%z = alloca i32
+	store i32 0, i32* %z
+	%tmp = load i32* %z
+	%sub = sub i32 %tmp, 1
+	%cmp = icmp ugt i32 %sub, 0
+	%retval = select i1 %cmp, i32 1, i32 0
+	ret i32 %retval
+}
+
+define i32 @test3() {
+entry:
+	%z = alloca i32
+	store i32 0, i32* %z
+	%tmp = load i32* %z
+	%sub = sub i32 %tmp, 1
+	%cmp = icmp slt i32 %sub, 0
+	%retval = select i1 %cmp, i32 1, i32 0
+	ret i32 %retval
+}
+
+define i32 @test4() {
+entry:
+	%z = alloca i32
+	store i32 0, i32* %z
+	%tmp = load i32* %z
+	%sub = sub i32 %tmp, 1
+	%cmp = icmp sle i32 %sub, 0
+	%retval = select i1 %cmp, i32 1, i32 0
+	ret i32 %retval
+}
+
+define i32 @test5() {
+entry:
+	%z = alloca i32
+	store i32 0, i32* %z
+	%tmp = load i32* %z
+	%sub = sub i32 %tmp, 1
+	%cmp = icmp sge i32 %sub, 0
+	%retval = select i1 %cmp, i32 0, i32 1
+	ret i32 %retval
+}
+
+define i32 @test6() {
+entry:
+	%z = alloca i32
+	store i32 0, i32* %z
+	%tmp = load i32* %z
+	%sub = sub i32 %tmp, 1
+	%cmp = icmp sgt i32 %sub, 0
+	%retval = select i1 %cmp, i32 0, i32 1
+	ret i32 %retval
+}
+
+define i32 @test7() {
+entry:
+	%z = alloca i32
+	store i32 0, i32* %z
+	%tmp = load i32* %z
+	%sub = sub i32 %tmp, 1
+	%cmp = icmp eq i32 %sub, 0
+	%retval = select i1 %cmp, i32 0, i32 1
+	ret i32 %retval
+}
+
+define i32 @test8() {
+entry:
+	%z = alloca i32
+	store i32 0, i32* %z
+	%tmp = load i32* %z
+	%sub = sub i32 %tmp, 1
+	%cmp = icmp ne i32 %sub, 0
+	%retval = select i1 %cmp, i32 1, i32 0
+	ret i32 %retval
+}
\ No newline at end of file
-- 
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