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