| Andrea Di Biagio | c84b5bd | 2015-04-30 21:03:29 +0000 | [diff] [blame] | 1 | ; RUN: llc -verify-machineinstrs -mtriple=x86_64-unknown-unknown -mcpu=generic -mattr=+avx < %s | FileCheck %s |
| 2 | |
| 3 | ; When commuting a VADDSDrr instruction, verify that the 'IsUndef' flag is |
| 4 | ; correctly propagated to the operands of the resulting instruction. |
| 5 | ; Test for PR23103; |
| 6 | |
| 7 | declare zeroext i1 @foo(<1 x double>) |
| 8 | |
| 9 | define <1 x double> @pr23103(<1 x double>* align 8 %Vp) { |
| 10 | ; CHECK-LABEL: pr23103: |
| 11 | ; CHECK: vmovsd (%rdi), %xmm0 |
| 12 | ; CHECK-NEXT: vmovsd %xmm0, {{.*}}(%rsp) {{.*#+}} 8-byte Spill |
| 13 | ; CHECK-NEXT: callq foo |
| 14 | ; CHECK-NEXT: vaddsd {{.*}}(%rsp), %xmm0, %xmm0 {{.*#+}} 8-byte Folded Reload |
| 15 | ; CHECK: retq |
| 16 | entry: |
| 17 | %V = load <1 x double>, <1 x double>* %Vp, align 8 |
| 18 | %call = call zeroext i1 @foo(<1 x double> %V) |
| 19 | %fadd = fadd <1 x double> %V, undef |
| 20 | ret <1 x double> %fadd |
| 21 | } |