forked from OSchip/llvm-project
31 lines
1.1 KiB
LLVM
31 lines
1.1 KiB
LLVM
; RUN: opt < %s -globalopt -globaldce -S | not grep malloc
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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"
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@G = internal global i32* null ; <i32**> [#uses=4]
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define void @init() {
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%malloccall = tail call i8* @malloc(i64 mul (i64 100, i64 4)) ; <i8*> [#uses=1]
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%P = bitcast i8* %malloccall to i32* ; <i32*> [#uses=1]
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store i32* %P, i32** @G
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%GV = load i32** @G ; <i32*> [#uses=1]
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%GVe = getelementptr i32* %GV, i32 40 ; <i32*> [#uses=1]
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store i32 20, i32* %GVe
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ret void
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}
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declare noalias i8* @malloc(i64)
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define i32 @get() {
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%GV = load i32** @G ; <i32*> [#uses=1]
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%GVe = getelementptr i32* %GV, i32 40 ; <i32*> [#uses=1]
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%V = load i32* %GVe ; <i32> [#uses=1]
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ret i32 %V
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}
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define i1 @check() {
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%GV = load i32** @G ; <i32*> [#uses=1]
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%V = icmp eq i32* %GV, null ; <i1> [#uses=1]
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ret i1 %V
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}
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