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llvm-mirror/test/Transforms/GlobalOpt/2009-01-13-phi-user.ll
Dan Gohman 205b641954 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.

llvm-svn: 81537
2009-09-11 18:01:28 +00:00

36 lines
1.3 KiB
LLVM

; RUN: opt < %s -globalopt -S | grep {phi.*@head}
; PR3321
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"
target triple = "x86_64-unknown-linux-gnu"
%struct.node = type { %struct.node*, i32 }
@head = internal global %struct.node* null ; <%struct.node**> [#uses=2]
@node = internal global %struct.node { %struct.node* null, i32 42 }, align 16 ; <%struct.node*> [#uses=1]
define i32 @f() nounwind {
entry:
store %struct.node* @node, %struct.node** @head, align 8
br label %bb1
bb: ; preds = %bb1
%0 = getelementptr %struct.node* %t.0, i64 0, i32 1 ; <i32*> [#uses=1]
%1 = load i32* %0, align 4 ; <i32> [#uses=1]
%2 = getelementptr %struct.node* %t.0, i64 0, i32 0 ; <%struct.node**> [#uses=1]
br label %bb1
bb1: ; preds = %bb, %entry
%value.0 = phi i32 [ undef, %entry ], [ %1, %bb ] ; <i32> [#uses=1]
%t.0.in = phi %struct.node** [ @head, %entry ], [ %2, %bb ] ; <%struct.node**> [#uses=1]
%t.0 = load %struct.node** %t.0.in ; <%struct.node*> [#uses=3]
%3 = icmp eq %struct.node* %t.0, null ; <i1> [#uses=1]
br i1 %3, label %bb2, label %bb
bb2: ; preds = %bb1
ret i32 %value.0
}
define i32 @main() nounwind {
entry:
%0 = call i32 @f() nounwind ; <i32> [#uses=1]
ret i32 %0
}