1 files changed, 45 insertions, 0 deletions
diff --git a/test/Transforms/InstSimplify/2011-01-18-Compare.ll b/test/Transforms/InstSimplify/2011-01-18-Compare.ll
new file mode 100644
index 0000000000..127957942b
--- /dev/null
+++ b/test/Transforms/InstSimplify/2011-01-18-Compare.ll
@@ -0,0 +1,45 @@
+; RUN: opt < %s -instsimplify -S | FileCheck %s
+target datalayout = "p:32:32"
+
+define i1 @ptrtoint() {
+; CHECK: @ptrtoint
+  %a = alloca i8
+  %tmp = ptrtoint i8* %a to i32
+  %r = icmp eq i32 %tmp, 0
+  ret i1 %r
+; CHECK: ret i1 false
+}
+
+define i1 @zext(i32 %x) {
+; CHECK: @zext
+  %e1 = zext i32 %x to i64
+  %e2 = zext i32 %x to i64
+  %r = icmp eq i64 %e1, %e2
+  ret i1 %r
+; CHECK: ret i1 true
+}
+
+define i1 @zext2(i1 %x) {
+; CHECK: @zext2
+  %e = zext i1 %x to i32
+  %c = icmp ne i32 %e, 0
+  ret i1 %c
+; CHECK: ret i1 %x
+}
+
+define i1 @sext(i32 %x) {
+; CHECK: @sext
+  %e1 = sext i32 %x to i64
+  %e2 = sext i32 %x to i64
+  %r = icmp eq i64 %e1, %e2
+  ret i1 %r
+; CHECK: ret i1 true
+}
+
+define i1 @sext2(i1 %x) {
+; CHECK: @sext2
+  %e = sext i1 %x to i32
+  %c = icmp ne i32 %e, 0
+  ret i1 %c
+; CHECK: ret i1 %x
+}