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llvm-mirror/test/Transforms/DeadStoreElimination/free.ll
Chris Lattner 022b15083b Reimplement the inner loop of DSE. It now uniformly uses getDependence(),
doesn't do its own local caching, and is slightly more aggressive about
free/store dse (see testcase).  This eliminates the last external client 
of MemDep::getDependenceFrom().

llvm-svn: 60619
2008-12-06 00:53:22 +00:00

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369 B
LLVM

; RUN: llvm-as < %s | opt -dse | llvm-dis | not grep DEAD
define void @test(i32* %Q, i32* %P) {
%DEAD = load i32* %Q ; <i32> [#uses=1]
store i32 %DEAD, i32* %P
free i32* %P
ret void
}
define void @test2({i32, i32}* %P) {
%Q = getelementptr {i32, i32} *%P, i32 0, i32 1
store i32 4, i32* %Q
free {i32,i32}* %P
ret void
}