File: stacksave-restore.ll

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llvm-toolchain-7 1%3A7.0.1-8%2Bdeb10u2
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; RUN: llc < %s

declare i8* @llvm.stacksave()

declare void @llvm.stackrestore(i8*)

define i32* @test(i32 %N) {
        %tmp = call i8* @llvm.stacksave( )              ; <i8*> [#uses=1]
        %P = alloca i32, i32 %N         ; <i32*> [#uses=1]
        call void @llvm.stackrestore( i8* %tmp )
        %Q = alloca i32, i32 %N         ; <i32*> [#uses=0]
        ret i32* %P
}