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| author | Duncan Sands <baldrick@free.fr> | 2011-02-21 16:27:36 +0000 |
|---|---|---|
| committer | Duncan Sands <baldrick@free.fr> | 2011-02-21 16:27:36 +0000 |
| commit | 6dcd49bc2b4dd5e6f76544571b9be2e5ffd3ddce (patch) | |
| tree | d09143a1a7bf2e7d756c68bb1d780c1c5da81c04 /llvm/unittests/Transforms/Utils/Local.cpp | |
| parent | 5decec97e53d3dd5caa8a6315b84bc37d6dcc85d (diff) | |
| download | bcm5719-llvm-6dcd49bc2b4dd5e6f76544571b9be2e5ffd3ddce.tar.gz bcm5719-llvm-6dcd49bc2b4dd5e6f76544571b9be2e5ffd3ddce.zip | |
Simplify RecursivelyDeleteDeadPHINode. The only functionality change
should be that if the phi is used by a side-effect free instruction with
no uses then the phi and the instruction now get zapped (checked by the
unittest).
llvm-svn: 126124
Diffstat (limited to 'llvm/unittests/Transforms/Utils/Local.cpp')
| -rw-r--r-- | llvm/unittests/Transforms/Utils/Local.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/llvm/unittests/Transforms/Utils/Local.cpp b/llvm/unittests/Transforms/Utils/Local.cpp index 2de09ada27a..e0322b37d33 100644 --- a/llvm/unittests/Transforms/Utils/Local.cpp +++ b/llvm/unittests/Transforms/Utils/Local.cpp @@ -47,6 +47,12 @@ TEST(Local, RecursivelyDeleteDeadPHINodes) { EXPECT_TRUE(RecursivelyDeleteDeadPHINode(phi)); + builder.SetInsertPoint(bb0); + phi = builder.CreatePHI(Type::getInt32Ty(C)); + builder.CreateAdd(phi, phi); + + EXPECT_TRUE(RecursivelyDeleteDeadPHINode(phi)); + bb0->dropAllReferences(); bb1->dropAllReferences(); delete bb0; |
