source: icGREP/icgrep-devel/llvm-3.8.0.src/test/CodeGen/Generic/2003-05-30-BadFoldGEP.ll @ 5027

Last change on this file since 5027 was 5027, checked in by cameron, 3 years ago

Upgrade to llvm 3.8

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Line 
1; RUN: llc < %s
2
3;; Date:     May 28, 2003.
4;; From:     test/Programs/External/SPEC/CINT2000/254.gap.llvm.bc
5;; Function: int %OpenOutput(sbyte* %filename.1)
6;;
7;; Error:    A sequence of GEPs is folded incorrectly by llc during selection
8;;           causing an assertion about a dynamic casting error.
9;;           This code sequence was produced (correctly) by preselection
10;;           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 though
15;;           the first instruction in the sequence contributes no indices.
16;;           The next instruction contributes a leading non-zero so another
17;;           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]         ; <[16 x %FileType]*> [#uses=1]
21@Output = internal global %FileType* null               ; <%FileType**> [#uses=1]
22
23define internal i32 @OpenOutput(i8* %filename.1) {
24entry:
25        %tmp.0 = load %FileType*, %FileType** @Output               ; <%FileType*> [#uses=1]
26        %tmp.4 = getelementptr %FileType, %FileType* %tmp.0, i64 1         ; <%FileType*> [#uses=1]
27        %addrOfGlobal = getelementptr [16 x %FileType], [16 x %FileType]* @OutputFiles, i64 0             ; <[16 x %FileType]*> [#uses=1]
28        %constantGEP = getelementptr [16 x %FileType], [16 x %FileType]* %addrOfGlobal, i64 1             ; <[16 x %FileType]*> [#uses=1]
29        %constantGEP.upgrd.1 = getelementptr [16 x %FileType], [16 x %FileType]* %constantGEP, i64 0, i64 0               ; <%FileType*> [#uses=1]
30        %tmp.10 = icmp eq %FileType* %tmp.4, %constantGEP.upgrd.1               ; <i1> [#uses=1]
31        br i1 %tmp.10, label %return, label %endif.0
32
33endif.0:                ; preds = %entry
34        ret i32 0
35
36return:         ; preds = %entry
37        ret i32 1
38}
39
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