1 ; RUN: llc < %s -mtriple=x86_64-linux -mcpu=nehalem | FileCheck %s 2 ; CHECK-NOT: mov 3 ; CHECK: paddw 4 ; CHECK-NOT: mov 5 ; CHECK: paddw 6 ; CHECK-NOT: paddw 7 ; CHECK-NOT: mov 8 9 ; The 2-addr pass should ensure that identical code is produced for these functions 10 ; no extra copy should be generated. 11 12 define <2 x i64> @test1(<2 x i64> %x, <2 x i64> %y) nounwind { 13 entry: 14 %tmp6 = bitcast <2 x i64> %y to <8 x i16> ; <<8 x i16>> [#uses=1] 15 %tmp8 = bitcast <2 x i64> %x to <8 x i16> ; <<8 x i16>> [#uses=1] 16 %tmp9 = add <8 x i16> %tmp8, %tmp6 ; <<8 x i16>> [#uses=1] 17 %tmp10 = bitcast <8 x i16> %tmp9 to <2 x i64> ; <<2 x i64>> [#uses=1] 18 ret <2 x i64> %tmp10 19 } 20 21 define <2 x i64> @test2(<2 x i64> %x, <2 x i64> %y) nounwind { 22 entry: 23 %tmp6 = bitcast <2 x i64> %x to <8 x i16> ; <<8 x i16>> [#uses=1] 24 %tmp8 = bitcast <2 x i64> %y to <8 x i16> ; <<8 x i16>> [#uses=1] 25 %tmp9 = add <8 x i16> %tmp8, %tmp6 ; <<8 x i16>> [#uses=1] 26 %tmp10 = bitcast <8 x i16> %tmp9 to <2 x i64> ; <<2 x i64>> [#uses=1] 27 ret <2 x i64> %tmp10 28 } 29
