42 lines
1.4 KiB
LLVM
42 lines
1.4 KiB
LLVM
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; RUN: opt -S -globalopt -o - < %s | FileCheck %s
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target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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@_ZL3g_i = internal global i32* null, align 8
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@.str = private unnamed_addr constant [2 x i8] c"0\00", align 1
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@.str.1 = private unnamed_addr constant [2 x i8] c"1\00", align 1
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define dso_local i32 @main() {
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store i32* null, i32** @_ZL3g_i, align 8
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call void @_ZL13PutsSomethingv()
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ret i32 0
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}
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; CHECK-LABEL: define {{.*}} @_ZL13PutsSomethingv()
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; CHECK: [[gvLoad:%.*]] = load i32*, i32** @_ZL3g_i
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; CHECK-NEXT: icmp eq i32* [[gvLoad]], null
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define internal void @_ZL13PutsSomethingv() {
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%1 = load i32*, i32** @_ZL3g_i, align 8
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%2 = icmp eq i32* %1, null
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br i1 %2, label %3, label %7
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3: ; preds = %0
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%4 = call noalias i8* @malloc(i64 4) #3
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%5 = bitcast i8* %4 to i32*
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store i32* %5, i32** @_ZL3g_i, align 8
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%6 = call i32 @puts(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str, i64 0, i64 0))
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br label %9
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7: ; preds = %0
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%8 = call i32 @puts(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
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br label %9
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9: ; preds = %7, %3
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ret void
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}
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declare dso_local noalias i8* @malloc(i64)
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declare dso_local i32 @puts(i8* nocapture readonly)
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