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