zext-nuw.ll
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; RUN: opt -indvars -S %s | FileCheck %s
%struct.A = type { i8 }
@c = global %struct.A* null
@d = global i32 4
define void @_Z3fn1v() {
%x2 = load i32, i32* @d
%x3 = icmp slt i32 %x2, 1
%x4 = select i1 %x3, i32 1, i32 %x2
%x5 = load %struct.A*, %struct.A** @c
%j.sroa.0.0..sroa_idx = getelementptr %struct.A, %struct.A* %x5, i64 0, i32 0
%j.sroa.0.0.copyload = load i8, i8* %j.sroa.0.0..sroa_idx
br label %.preheader4.lr.ph
.preheader4.lr.ph: ; preds = %0
; CHECK-NOT: add i64 {{.*}}, 4294967296
br label %.preheader4
.preheader4: ; preds = %x22, %.preheader4.lr.ph
%k.09 = phi i8* [ undef, %.preheader4.lr.ph ], [ %x25, %x22 ]
%x8 = icmp ult i32 0, 4
br i1 %x8, label %.preheader.lr.ph, label %x22
.preheader.lr.ph: ; preds = %.preheader4
br label %.preheader
.preheader: ; preds = %x17, %.preheader.lr.ph
%k.17 = phi i8* [ %k.09, %.preheader.lr.ph ], [ %x19, %x17 ]
%v.06 = phi i32 [ 0, %.preheader.lr.ph ], [ %x20, %x17 ]
br label %x17
x17: ; preds = %.preheader
%x18 = sext i8 %j.sroa.0.0.copyload to i64
%x19 = getelementptr i8, i8* %k.17, i64 %x18
%x20 = add i32 %v.06, 1
%x21 = icmp ult i32 %x20, %x4
br i1 %x21, label %.preheader, label %._crit_edge.8
._crit_edge.8: ; preds = %x17
%split = phi i8* [ %x19, %x17 ]
br label %x22
x22: ; preds = %._crit_edge.8, %.preheader4
%k.1.lcssa = phi i8* [ %split, %._crit_edge.8 ], [ %k.09, %.preheader4 ]
%x25 = getelementptr i8, i8* %k.1.lcssa
br label %.preheader4
}