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      1 ; RUN: llc < %s -march=x86 -mtriple=i386-unknown-linux-gnu
      2 ; PR3995
      3 
      4         %struct.vtable = type { i32 (...)** }
      5 	%struct.array = type { %struct.impl, [256 x %struct.pair], [256 x %struct.pair], [256 x %struct.pair], [256 x %struct.pair], [256 x %struct.pair], [256 x %struct.pair] }
      6 	%struct.impl = type { %struct.vtable, i8, %struct.impl*, i32, i32, i64, i64 }
      7 	%struct.pair = type { i64, i64 }
      8 
      9 define void @test() {
     10 entry:
     11 	%0 = load i32* null, align 4		; <i32> [#uses=1]
     12 	%1 = lshr i32 %0, 8		; <i32> [#uses=1]
     13 	%2 = and i32 %1, 255		; <i32> [#uses=1]
     14 	%3 = getelementptr %struct.array* null, i32 0, i32 3		; <[256 x %struct.pair]*> [#uses=1]
     15 	%4 = getelementptr [256 x %struct.pair]* %3, i32 0, i32 %2		; <%struct.pair*> [#uses=1]
     16 	%5 = getelementptr %struct.pair* %4, i32 0, i32 1		; <i64*> [#uses=1]
     17 	%6 = load i64* %5, align 4		; <i64> [#uses=1]
     18 	%7 = xor i64 0, %6		; <i64> [#uses=1]
     19 	%8 = xor i64 %7, 0		; <i64> [#uses=1]
     20 	%9 = xor i64 %8, 0		; <i64> [#uses=1]
     21 	store i64 %9, i64* null, align 8
     22 	unreachable
     23 }
     24