pr35890.ll
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; RUN: opt < %s -scalar-evolution-max-arith-depth=0 -indvars -S | FileCheck %s
target datalayout = "e-m:e-i32:64-f80:128-n8:16:32:64-S128-ni:1"
target triple = "x86_64-unknown-linux-gnu"
; Check that it does not crash because SCEVAddRec's step is not an AddRec.
define void @pr35890(i32* %inc_ptr, i32 %a) {
; CHECK-LABEL: @pr35890(
entry:
%inc = load i32, i32* %inc_ptr, !range !0
%ne.cond = icmp ne i32 %inc, 0
br i1 %ne.cond, label %loop, label %bail
loop:
%iv = phi i32 [ 0, %entry ], [ %iv.next, %backedge ]
%a.1 = add i32 %a, 1
%iv.next = add i32 %iv, %a.1
%iv.wide = zext i32 %iv to i64
%iv.square = mul i64 %iv.wide, %iv.wide
%iv.cube = mul i64 %iv.square, %iv.wide
%brcond = icmp slt i64 %iv.wide, %iv.cube
br i1 %brcond, label %if.true, label %if.false
if.true:
br label %backedge
if.false:
br label %backedge
backedge:
%loopcond = icmp slt i32 %iv, 200
br i1 %loopcond, label %loop, label %exit
exit:
ret void
bail:
ret void
}
!0 = !{i32 0, i32 100}