-int %constexpr_test() {
- %X = alloca int
- %Y = load int* %X
- store int 5, int* getelementptr ({ int }* %Global, long 0, ubyte 0)
- %REMOVE = load int* %X
- %retval = sub int %Y, %REMOVE
- ret int %retval
+define i32 @constexpr_test() {
+ %X = alloca i32
+ call void @external(i32* %X)
+
+ %Y = load i32* %X
+ store i32 5, i32* getelementptr ({ i32 }* @Global, i64 0, i32 0)
+ %REMOVE = load i32* %X
+ %retval = sub i32 %Y, %REMOVE
+ ret i32 %retval
+; CHECK: @constexpr_test
+; CHECK: ret i32 0
+}
+
+
+
+; PR7589
+; These two index expressions are different, this cannot be CSE'd.
+define i16 @zext_sext_confusion(i16* %row2col, i5 %j) nounwind{
+entry:
+ %sum5.cast = zext i5 %j to i64 ; <i64> [#uses=1]
+ %P1 = getelementptr i16* %row2col, i64 %sum5.cast
+ %row2col.load.1.2 = load i16* %P1, align 1 ; <i16> [#uses=1]
+
+ %sum13.cast31 = sext i5 %j to i6 ; <i6> [#uses=1]
+ %sum13.cast = zext i6 %sum13.cast31 to i64 ; <i64> [#uses=1]
+ %P2 = getelementptr i16* %row2col, i64 %sum13.cast
+ %row2col.load.1.6 = load i16* %P2, align 1 ; <i16> [#uses=1]
+
+ %.ret = sub i16 %row2col.load.1.6, %row2col.load.1.2 ; <i16> [#uses=1]
+ ret i16 %.ret
+; CHECK: @zext_sext_confusion
+; CHECK: ret i16 %.ret