; RUN: opt < %s -passes=reassociate -disable-output | |
; PR13041 | |
define void @foo() { | |
entry: | |
br label %while.cond | |
while.cond: ; preds = %while.body, %entry | |
%b.0 = phi i32 [ undef, %entry ], [ %sub2, %while.body ] | |
%c.0 = phi i32 [ undef, %entry ], [ %sub3, %while.body ] | |
br i1 undef, label %while.end, label %while.body | |
while.body: ; preds = %while.cond | |
%sub = sub nsw i32 0, %b.0 | |
%sub2 = sub nsw i32 %sub, %c.0 | |
%sub3 = sub nsw i32 0, %c.0 | |
br label %while.cond | |
while.end: ; preds = %while.cond | |
ret void | |
} |