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1; RUN: llc < %s2 3;; Date: May 28, 2003.4;; From: test/Programs/External/SPEC/CINT2000/254.gap.llvm.bc5;; Function: int %OpenOutput(sbyte* %filename.1)6;;7;; Error: A sequence of GEPs is folded incorrectly by llc during selection8;; causing an assertion about a dynamic casting error.9;; This code sequence was produced (correctly) by preselection10;; from a nested pair of ConstantExpr getelementptrs.11;; The code below is the output of preselection.12;; The original ConstantExprs are included in a comment.13;;14;; Cause: FoldGetElemChain() was inserting an extra leading 0 even though15;; the first instruction in the sequence contributes no indices.16;; The next instruction contributes a leading non-zero so another17;; zero should not be added before it!18;;19 %FileType = type { i32, [256 x i8], i32, i32, i32, i32 }20@OutputFiles = external global [16 x %FileType] ; <ptr> [#uses=1]21@Output = internal global ptr null ; <ptr> [#uses=1]22 23define internal i32 @OpenOutput(ptr %filename.1) {24entry:25 %tmp.0 = load ptr, ptr @Output ; <ptr> [#uses=1]26 %tmp.4 = getelementptr %FileType, ptr %tmp.0, i64 1 ; <ptr> [#uses=1]27 %addrOfGlobal = getelementptr [16 x %FileType], ptr @OutputFiles, i64 0 ; <ptr> [#uses=1]28 %constantGEP = getelementptr [16 x %FileType], ptr %addrOfGlobal, i64 1 ; <ptr> [#uses=1]29 %constantGEP.upgrd.1 = getelementptr [16 x %FileType], ptr %constantGEP, i64 0, i64 0 ; <ptr> [#uses=1]30 %tmp.10 = icmp eq ptr %tmp.4, %constantGEP.upgrd.1 ; <i1> [#uses=1]31 br i1 %tmp.10, label %return, label %endif.032 33endif.0: ; preds = %entry34 ret i32 035 36return: ; preds = %entry37 ret i32 138}39 40