test/Transforms/GlobalOpt/malloc-promote-3.ll


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; RUN: opt < %s -globalopt -globaldce -S | not grep malloc
target datalayout = "E-p:64:64:64-a0:0:8-f32:32:32-f64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-v64:64:64-v128:128:128"

@G = internal global i32* null          ; <i32**> [#uses=4]

define void @init() {
        %malloccall = tail call i8* @malloc(i64 mul (i64 100, i64 4)) ; <i8*> [#uses=1]
        %P = bitcast i8* %malloccall to i32*            ; <i32*> [#uses=1]
        store i32* %P, i32** @G
        %GV = load i32** @G             ; <i32*> [#uses=1]
        %GVe = getelementptr i32* %GV, i32 40           ; <i32*> [#uses=1]
        store i32 20, i32* %GVe
        ret void
}

declare noalias i8* @malloc(i64)

define i32 @get() {
        %GV = load i32** @G             ; <i32*> [#uses=1]
        %GVe = getelementptr i32* %GV, i32 40           ; <i32*> [#uses=1]
        %V = load i32* %GVe             ; <i32> [#uses=1]
        ret i32 %V
}

define i1 @check() {
        %GV = load i32** @G             ; <i32*> [#uses=1]
        %V = icmp eq i32* %GV, null             ; <i1> [#uses=1]
        ret i1 %V
}