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1; RUN: opt < %s -passes="loop-mssa(simple-loop-unswitch)" -verify-memoryssa -disable-output2; PR128873target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"4target triple = "x86_64-unknown-linux-gnu"5 6@a = common global i32 0, align 47@c = common global i32 0, align 48@b = common global i32 0, align 49 10define void @func() noreturn nounwind uwtable {11entry:12 %0 = load i32, ptr @a, align 413 %tobool = icmp eq i32 %0, 014 %1 = load i32, ptr @b, align 415 br label %while.body16 17while.body: ; preds = %while.body, %entry18 %d.0 = phi i8 [ undef, %entry ], [ %conv2, %while.body ]19 %conv = sext i8 %d.0 to i3220 %cond = select i1 %tobool, i32 0, i32 %conv21 %conv11 = zext i8 %d.0 to i3222 %add = add i32 %1, %conv1123 %conv2 = trunc i32 %add to i824 br label %while.body25}26