| ; RUN: llc < %s |
| |
| ; This testcase used to crash. See PR29132. |
| |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| @a = common local_unnamed_addr global i16 0, align 2 |
| @c = common global i32 0, align 4 |
| @d = common local_unnamed_addr global i8 0, align 1 |
| @b = common global i32 0, align 4 |
| |
| ; Function Attrs: norecurse nounwind optsize uwtable |
| define i32 @main() local_unnamed_addr #0 { |
| entry: |
| %0 = load volatile i32, ptr @c, align 4 |
| %tobool = icmp eq i32 %0, 0 |
| %1 = load i16, ptr @a, align 2 |
| br i1 %tobool, label %lor.rhs, label %lor.end |
| |
| lor.rhs: ; preds = %entry |
| %inc = add i16 %1, 1 |
| store i16 %inc, ptr @a, align 2 |
| br label %lor.end |
| |
| lor.end: ; preds = %entry, %lor.rhs |
| %2 = phi i16 [ %inc, %lor.rhs ], [ %1, %entry ] |
| %dec = add i16 %2, -1 |
| store i16 %dec, ptr @a, align 2 |
| %3 = load i8, ptr @d, align 1 |
| %sub = sub i8 0, %3 |
| %tobool4 = icmp eq i16 %dec, 0 |
| br i1 %tobool4, label %land.end, label %land.rhs |
| |
| land.rhs: ; preds = %lor.end |
| %4 = load volatile i32, ptr @b, align 4 |
| %tobool5 = icmp ne i32 %4, 0 |
| br label %land.end |
| |
| land.end: ; preds = %lor.end, %land.rhs |
| %5 = phi i1 [ false, %lor.end ], [ %tobool5, %land.rhs ] |
| %land.ext = zext i1 %5 to i8 |
| %or = or i8 %land.ext, %sub |
| store i8 %or, ptr @d, align 1 |
| ret i32 0 |
| } |
| |
| attributes #0 = { norecurse nounwind optsize uwtable "target-cpu"="x86-64" } |
