1 files changed, 29 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/zext-bool-add-sub.ll b/test/Transforms/InstCombine/zext-bool-add-sub.ll
new file mode 100644
index 0000000..1164273
--- /dev/null
+++ b/test/Transforms/InstCombine/zext-bool-add-sub.ll
@@ -0,0 +1,29 @@
+; RUN: opt < %s -instcombine -S | not grep zext
+
+define i32 @a(i1 %x) {
+entry:
+        %y = zext i1 %x to i32
+        %res = add i32 %y, 1
+        ret i32 %res
+}
+
+define i32 @b(i1 %x) {
+entry:
+        %y = zext i1 %x to i32
+        %res = add i32 %y, -1
+        ret i32 %res
+}
+
+define i32 @c(i1 %x) {
+entry:
+        %y = zext i1 %x to i32
+        %res = sub i32 0, %y
+        ret i32 %res
+}
+
+define i32 @d(i1 %x) {
+entry:
+        %y = zext i1 %x to i32
+        %res = sub i32 3, %y
+        ret i32 %res
+}