| ; RUN: llc < %s |
| |
| ;; Date: May 28, 2003. |
| ;; From: test/Programs/External/SPEC/CINT2000/254.gap.llvm.bc |
| ;; Function: int %OpenOutput(sbyte* %filename.1) |
| ;; |
| ;; Error: A sequence of GEPs is folded incorrectly by llc during selection |
| ;; causing an assertion about a dynamic casting error. |
| ;; This code sequence was produced (correctly) by preselection |
| ;; from a nested pair of ConstantExpr getelementptrs. |
| ;; The code below is the output of preselection. |
| ;; The original ConstantExprs are included in a comment. |
| ;; |
| ;; Cause: FoldGetElemChain() was inserting an extra leading 0 even though |
| ;; the first instruction in the sequence contributes no indices. |
| ;; The next instruction contributes a leading non-zero so another |
| ;; zero should not be added before it! |
| ;; |
| %FileType = type { i32, [256 x i8], i32, i32, i32, i32 } |
| @OutputFiles = external global [16 x %FileType] ; <ptr> [#uses=1] |
| @Output = internal global ptr null ; <ptr> [#uses=1] |
| |
| define internal i32 @OpenOutput(ptr %filename.1) { |
| entry: |
| %tmp.0 = load ptr, ptr @Output ; <ptr> [#uses=1] |
| %tmp.4 = getelementptr %FileType, ptr %tmp.0, i64 1 ; <ptr> [#uses=1] |
| %addrOfGlobal = getelementptr [16 x %FileType], ptr @OutputFiles, i64 0 ; <ptr> [#uses=1] |
| %constantGEP = getelementptr [16 x %FileType], ptr %addrOfGlobal, i64 1 ; <ptr> [#uses=1] |
| %constantGEP.upgrd.1 = getelementptr [16 x %FileType], ptr %constantGEP, i64 0, i64 0 ; <ptr> [#uses=1] |
| %tmp.10 = icmp eq ptr %tmp.4, %constantGEP.upgrd.1 ; <i1> [#uses=1] |
| br i1 %tmp.10, label %return, label %endif.0 |
| |
| endif.0: ; preds = %entry |
| ret i32 0 |
| |
| return: ; preds = %entry |
| ret i32 1 |
| } |
| |
