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Diffstat (limited to 'test/Transforms/InstCombine/getelementptr_const.ll')
| -rw-r--r-- | test/Transforms/InstCombine/getelementptr_const.ll | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/getelementptr_const.ll b/test/Transforms/InstCombine/getelementptr_const.ll new file mode 100644 index 000000000000..823ff5efde99 --- /dev/null +++ b/test/Transforms/InstCombine/getelementptr_const.ll @@ -0,0 +1,15 @@ +; Test folding of constantexpr geps into normal geps. +; RUN: llvm-as < %s | opt -instcombine -gvn -instcombine | \ +; RUN: llvm-dis | not grep getelementptr + +@Array = external global [40 x i32] ; <[40 x i32]*> [#uses=2] + +define i32 @test(i64 %X) { + %A = getelementptr i32* getelementptr ([40 x i32]* @Array, i64 0, i64 0), i64 %X ; <i32*> [#uses=1] + %B = getelementptr [40 x i32]* @Array, i64 0, i64 %X ; <i32*> [#uses=1] + %a = ptrtoint i32* %A to i32 ; <i32> [#uses=1] + %b = ptrtoint i32* %B to i32 ; <i32> [#uses=1] + %c = sub i32 %a, %b ; <i32> [#uses=1] + ret i32 %c +} + |