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| author | Benjamin Kramer <benny.kra@googlemail.com> | 2012-03-28 14:50:09 +0000 |
|---|---|---|
| committer | Benjamin Kramer <benny.kra@googlemail.com> | 2012-03-28 14:50:09 +0000 |
| commit | c1ea16ec4339a9746f436c6f2f5b08197f309343 (patch) | |
| tree | 6fc94a8a0bda0fddeee448e76ce7f5ad98cd16b6 /test | |
| parent | 9b58464330f45dcf6fe621a40f4bc8617169586e (diff) | |
| download | llvm-c1ea16ec4339a9746f436c6f2f5b08197f309343.tar.gz llvm-c1ea16ec4339a9746f436c6f2f5b08197f309343.tar.bz2 llvm-c1ea16ec4339a9746f436c6f2f5b08197f309343.tar.xz | |
GlobalOpt: If we have an inbounds GEP from a ConstantAggregateZero global that we just determined to be constant, replace all loads from it with a zero value.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153576 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/Transforms/GlobalOpt/zeroinitializer-gep-load.ll | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/test/Transforms/GlobalOpt/zeroinitializer-gep-load.ll b/test/Transforms/GlobalOpt/zeroinitializer-gep-load.ll new file mode 100644 index 0000000000..d613601e8d --- /dev/null +++ b/test/Transforms/GlobalOpt/zeroinitializer-gep-load.ll @@ -0,0 +1,11 @@ +; RUN: opt < %s -S -globalopt | FileCheck %s + +@zero = internal global [10 x i32] zeroinitializer + +define i32 @test1(i64 %idx) nounwind { + %arrayidx = getelementptr inbounds [10 x i32]* @zero, i64 0, i64 %idx + %l = load i32* %arrayidx + ret i32 %l +; CHECK: @test1 +; CHECK: ret i32 0 +} |