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15 lines
361 B
LLVM
15 lines
361 B
LLVM
; RUN: opt %s -basicaa -gvn -instcombine | llvm-dis | grep {ret i32 0}
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declare i32* @test(i32* nocapture)
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define i32 @test2() {
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%P = alloca i32
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%Q = call i32* @test(i32* %P)
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%a = load i32* %P
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store i32 4, i32* %Q ;; cannot clobber P since it is nocapture.
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%b = load i32* %P
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%c = sub i32 %a, %b
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ret i32 %c
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}
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