New testcase. Shrinking the variable to a bool allows instcombine to delete
the condition.
llvm-svn: 18816
diff --git a/llvm/test/Regression/Transforms/GlobalOpt/integer-bool.ll b/llvm/test/Regression/Transforms/GlobalOpt/integer-bool.ll
new file mode 100644
index 0000000..2daf955
--- /dev/null
+++ b/llvm/test/Regression/Transforms/GlobalOpt/integer-bool.ll
@@ -0,0 +1,22 @@
+; RUN: llvm-as < %s | opt -globalopt -instcombine | llvm-dis | grep 'ret bool true'
+
+;; check that global opt turns integers that only hold 0 or 1 into bools.
+
+%G = internal global int 0 ;; This only holds 0 or 1.
+
+implementation
+
+void %set1() {
+ store int 0, int* %G
+ ret void
+}
+void %set2() {
+ store int 1, int* %G
+ ret void
+}
+
+bool %get() {
+ %A = load int* %G
+ %C = setlt int %A, 2 ;; always true
+ ret bool %C
+}