llvm/test/Transforms/ADCE/2002-05-23-ZeroArgPHITest.ll
Dan Gohman f2f6ce65b7 Change tests from "opt %s" to "opt < %s" so that opt doesn't see the
input filename so that opt doesn't print the input filename in the
output so that grep lines in the tests don't unintentionally match
strings in the input filename.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81537 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-11 18:01:28 +00:00

33 lines
1.4 KiB
LLVM

; This testcase contains a entire loop that should be removed. The only thing
; left is the store instruction in BB0. The problem this testcase was running
; into was that when the reg109 PHI was getting zero predecessors, it was
; removed even though there were uses still around. Now the uses are filled
; in with a dummy value before the PHI is deleted.
;
; RUN: opt < %s -adce
%node_t = type { double*, %node_t*, %node_t**, double**, double*, i32, i32 }
define void @localize_local(%node_t* %nodelist) {
bb0:
%nodelist.upgrd.1 = alloca %node_t* ; <%node_t**> [#uses=2]
store %node_t* %nodelist, %node_t** %nodelist.upgrd.1
br label %bb1
bb1: ; preds = %bb0
%reg107 = load %node_t** %nodelist.upgrd.1 ; <%node_t*> [#uses=2]
%cond211 = icmp eq %node_t* %reg107, null ; <i1> [#uses=1]
br i1 %cond211, label %bb3, label %bb2
bb2: ; preds = %bb2, %bb1
%reg109 = phi %node_t* [ %reg110, %bb2 ], [ %reg107, %bb1 ] ; <%node_t*> [#uses=1]
%reg212 = getelementptr %node_t* %reg109, i64 0, i32 1 ; <%node_t**> [#uses=1]
%reg110 = load %node_t** %reg212 ; <%node_t*> [#uses=2]
%cond213 = icmp ne %node_t* %reg110, null ; <i1> [#uses=1]
br i1 %cond213, label %bb2, label %bb3
bb3: ; preds = %bb2, %bb1
ret void
}