YouCompleteMe/cpp/llvm/test/CodeGen/X86/longlong-deadload.ll
2012-07-05 17:51:06 -07:00

15 lines
375 B
LLVM

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