| ; RUN: opt < %s -passes='globalopt,function(instcombine,loop-mssa(loop-rotate,licm),instcombine,loop(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, ptr @g_814, align 4 |
| br label %for.cond |
| |
| for.cond: ; preds = %for.body, %lbl_818 |
| %0 = load i32, ptr @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], ptr @g_244, i32 0, i64 %idxprom |
| %1 = load i32, ptr %arrayidx, align 1 |
| store i32 %1, ptr @func_21_l_773, align 4 |
| store i32 1, ptr @g_814, align 4 |
| br label %for.cond |
| |
| for.end: ; preds = %for.cond |
| %2 = load i32, ptr @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(...) |
