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28 lines
854 B
LLVM
28 lines
854 B
LLVM
; RUN: opt -globals-aa -gvn < %s -S | FileCheck %s
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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; @o and @m are initialized to @i, so they should not be classed as
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; indirect globals referring only to allocation functions.
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@o = internal global i32* @i, align 8
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@m = internal global i32* @i, align 8
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@i = internal global i32 0, align 4
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; CHECK-LABEL: @f
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define i1 @f() {
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entry:
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%0 = load i32*, i32** @o, align 8
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store i32 0, i32* %0, align 4
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%1 = load volatile i32*, i32** @m, align 8
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store i32 1, i32* %1, align 4
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; CHECK: %[[a:.*]] = load i32*
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%2 = load i32*, i32** @o, align 8
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; CHECK: %[[b:.*]] = load i32, i32* %[[a]]
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%3 = load i32, i32* %2, align 4
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; CHECK: %[[c:.*]] = icmp ne i32 %[[b]], 0
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%tobool.i = icmp ne i32 %3, 0
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; CHECK: ret i1 %[[c]]
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ret i1 %tobool.i
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}
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