John Bauman | 66b8ab2 | 2014-05-06 15:57:45 -0400 | [diff] [blame] | 1 | ; RUN: llc < %s -mtriple=x86_64-linux -join-physregs | 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 | |
| 30 | |
| 31 | ; The coalescer should commute the add to avoid a copy. |
| 32 | define <4 x float> @test3(<4 x float> %V) { |
| 33 | entry: |
| 34 | %tmp8 = shufflevector <4 x float> %V, <4 x float> undef, |
| 35 | <4 x i32> < i32 3, i32 2, i32 1, i32 0 > |
| 36 | %add = fadd <4 x float> %tmp8, %V |
| 37 | ret <4 x float> %add |
| 38 | } |
| 39 | |