llvm/test/Transforms/ADCE/2002-05-23-ZeroArgPHITest.ll
David Blaikie 7c9c6ed761 [opaque pointer type] Add textual IR support for explicit type parameter to load instruction
Essentially the same as the GEP change in r230786.

A similar migration script can be used to update test cases, though a few more
test case improvements/changes were required this time around: (r229269-r229278)

import fileinput
import sys
import re

pat = re.compile(r"((?:=|:|^)\s*load (?:atomic )?(?:volatile )?(.*?))(| addrspace\(\d+\) *)\*($| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$)")

for line in sys.stdin:
  sys.stdout.write(re.sub(pat, r"\1, \2\3*\4", line))

Reviewers: rafael, dexonsmith, grosser

Differential Revision: http://reviews.llvm.org/D7649

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230794 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-27 21:17:42 +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*, %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, %node_t* %reg109, i64 0, i32 1 ; <%node_t**> [#uses=1]
%reg110 = load %node_t*, %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
}