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48 lines
1.7 KiB
LLVM
48 lines
1.7 KiB
LLVM
; RUN: opt < %s -basicaa -globalopt -instcombine -loop-rotate -licm -instcombine -indvars -loop-deletion -constmerge -S
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; PR11882: ComputeLoadConstantCompareExitLimit crash.
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;
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; for.body is deleted leaving a loop-invariant load.
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; CHECK-NOT: for.body
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target datalayout = "e-p:64:64:64-n32:64"
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@func_21_l_773 = external global i32, align 4
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@g_814 = external global i32, align 4
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@g_244 = internal global [1 x [0 x i32]] zeroinitializer, align 4
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define void @func_21() nounwind uwtable ssp {
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entry:
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br label %lbl_818
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lbl_818: ; preds = %for.end, %entry
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call void (...)* @func_27()
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store i32 0, i32* @g_814, align 4, !tbaa !0
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br label %for.cond
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for.cond: ; preds = %for.body, %lbl_818
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%0 = load i32* @g_814, align 4, !tbaa !0
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%cmp = icmp sle i32 %0, 0
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br i1 %cmp, label %for.body, label %for.end
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for.body: ; preds = %for.cond
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%idxprom = sext i32 %0 to i64
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%arrayidx = getelementptr inbounds [0 x i32]* getelementptr inbounds ([1 x [0 x i32]]* @g_244, i32 0, i64 0), i32 0, i64 %idxprom
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%1 = load i32* %arrayidx, align 1, !tbaa !0
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store i32 %1, i32* @func_21_l_773, align 4, !tbaa !0
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store i32 1, i32* @g_814, align 4, !tbaa !0
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br label %for.cond
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for.end: ; preds = %for.cond
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%2 = load i32* @func_21_l_773, align 4, !tbaa !0
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%tobool = icmp ne i32 %2, 0
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br i1 %tobool, label %lbl_818, label %if.end
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if.end: ; preds = %for.end
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ret void
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}
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declare void @func_27(...)
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!0 = metadata !{metadata !"int", metadata !1}
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!1 = metadata !{metadata !"omnipotent char", metadata !2}
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!2 = metadata !{metadata !"Simple C/C++ TBAA", null}
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