| Andrew Trick | eb6dd23 | 2012-03-26 22:33:59 +0000 | [diff] [blame] | 1 | ; RUN: opt < %s -basicaa -globalopt -instcombine -loop-rotate -licm -instcombine -indvars -loop-deletion -constmerge -S |
| 2 | ; PR11882: ComputeLoadConstantCompareExitLimit crash. |
| 3 | ; |
| 4 | ; for.body is deleted leaving a loop-invariant load. |
| 5 | ; CHECK-NOT: for.body |
| 6 | target datalayout = "e-p:64:64:64-n32:64" |
| 7 | |
| 8 | @func_21_l_773 = external global i32, align 4 |
| 9 | @g_814 = external global i32, align 4 |
| 10 | @g_244 = internal global [1 x [0 x i32]] zeroinitializer, align 4 |
| 11 | |
| 12 | define void @func_21() nounwind uwtable ssp { |
| 13 | entry: |
| 14 | br label %lbl_818 |
| 15 | |
| 16 | lbl_818: ; preds = %for.end, %entry |
| 17 | call void (...)* @func_27() |
| 18 | store i32 0, i32* @g_814, align 4, !tbaa !0 |
| 19 | br label %for.cond |
| 20 | |
| 21 | for.cond: ; preds = %for.body, %lbl_818 |
| 22 | %0 = load i32* @g_814, align 4, !tbaa !0 |
| 23 | %cmp = icmp sle i32 %0, 0 |
| 24 | br i1 %cmp, label %for.body, label %for.end |
| 25 | |
| 26 | for.body: ; preds = %for.cond |
| 27 | %idxprom = sext i32 %0 to i64 |
| 28 | %arrayidx = getelementptr inbounds [0 x i32]* getelementptr inbounds ([1 x [0 x i32]]* @g_244, i32 0, i64 0), i32 0, i64 %idxprom |
| 29 | %1 = load i32* %arrayidx, align 1, !tbaa !0 |
| 30 | store i32 %1, i32* @func_21_l_773, align 4, !tbaa !0 |
| 31 | store i32 1, i32* @g_814, align 4, !tbaa !0 |
| 32 | br label %for.cond |
| 33 | |
| 34 | for.end: ; preds = %for.cond |
| 35 | %2 = load i32* @func_21_l_773, align 4, !tbaa !0 |
| 36 | %tobool = icmp ne i32 %2, 0 |
| 37 | br i1 %tobool, label %lbl_818, label %if.end |
| 38 | |
| 39 | if.end: ; preds = %for.end |
| 40 | ret void |
| 41 | } |
| 42 | |
| 43 | declare void @func_27(...) |
| 44 | |
| 45 | !0 = metadata !{metadata !"int", metadata !1} |
| 46 | !1 = metadata !{metadata !"omnipotent char", metadata !2} |
| 47 | !2 = metadata !{metadata !"Simple C/C++ TBAA", null} |