File: longlong-deadload.ll

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llvm-toolchain-3.9 1%3A3.9.1-8
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; RUN: llc < %s -march=x86 | FileCheck %s
; This should not load or store the top part of *P.

define void @test(i64* %P) nounwind  {
; CHECK-LABEL: test:
; CHECK: movl 4(%esp), %[[REGISTER:.*]]
; CHECK-NOT: 4(%[[REGISTER]])
; CHECK: ret
	%tmp1 = load i64, i64* %P, align 8		; <i64> [#uses=1]
	%tmp2 = xor i64 %tmp1, 1		; <i64> [#uses=1]
	store i64 %tmp2, i64* %P, align 8
	ret void
}