1 ; RUN: llc -march=amdgcn -mcpu=gfx900 -verify-machineinstrs < %s | FileCheck -enable-var-scope -check-prefixes=GCN,GFX9 %s 2 3 ; Make sure reduceBuildVecExtToExtBuildVec combine doesn't regress 4 5 ; code with legal v4i16. The v4i16 build_vector it produces will be 6 ; custom lowered into an i32 based build_vector, producing a mess that 7 ; nothing manages to put back together. 8 9 ; GCN-LABEL: {{^}}v2i16_to_i64: 10 ; GFX9: s_waitcnt 11 ; GFX9-NEXT: v_pk_add_u16 v0, v0, v1 12 ; GFX9-NEXT: v_lshrrev_b32_e32 v1, 16, v0 13 ; GFX9-NEXT: v_and_b32_e32 v0, 0xffff, v0 14 ; GFX9-NEXT: s_setpc_b64 15 define i64 @v2i16_to_i64(<2 x i16> %x, <2 x i16> %y) { 16 %x.add = add <2 x i16> %x, %y 17 %zext = zext <2 x i16> %x.add to <2 x i32> 18 %arst = bitcast <2 x i32> %zext to i64 19 ret i64 %arst 20 } 21
