1; RUN: opt < %s -loop-unswitch -enable-new-pm=0 -disable-output 2; RUN: opt < %s -loop-unswitch -enable-new-pm=0 -enable-mssa-loop-dependency=true -verify-memoryssa -disable-output 3; PR12887 4target 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" 5target triple = "x86_64-unknown-linux-gnu" 6 7@a = common global i32 0, align 4 8@c = common global i32 0, align 4 9@b = common global i32 0, align 4 10 11define void @func() noreturn nounwind uwtable { 12entry: 13 %0 = load i32, i32* @a, align 4 14 %tobool = icmp eq i32 %0, 0 15 %1 = load i32, i32* @b, align 4 16 br label %while.body 17 18while.body: ; preds = %while.body, %entry 19 %d.0 = phi i8 [ undef, %entry ], [ %conv2, %while.body ] 20 %conv = sext i8 %d.0 to i32 21 %cond = select i1 %tobool, i32 0, i32 %conv 22 %conv11 = zext i8 %d.0 to i32 23 %add = add i32 %1, %conv11 24 %conv2 = trunc i32 %add to i8 25 br label %while.body 26} 27