Index: llvm/trunk/lib/Target/AMDGPU/SIInstructions.td =================================================================== --- llvm/trunk/lib/Target/AMDGPU/SIInstructions.td +++ llvm/trunk/lib/Target/AMDGPU/SIInstructions.td @@ -852,6 +852,8 @@ def : BitConvert ; def : BitConvert ; def : BitConvert ; +def : BitConvert ; +def : BitConvert ; // FIXME: Make SGPR def : BitConvert ; Index: llvm/trunk/test/CodeGen/AMDGPU/bitcast-v4f16-v4i16.ll =================================================================== --- llvm/trunk/test/CodeGen/AMDGPU/bitcast-v4f16-v4i16.ll +++ llvm/trunk/test/CodeGen/AMDGPU/bitcast-v4f16-v4i16.ll @@ -0,0 +1,35 @@ +; RUN: llc -march=amdgcn -mcpu=gfx900 -verify-machineinstrs < %s | FileCheck -enable-var-scope %s + +; creating v4i16->v4f16 and v4f16->v4i16 bitcasts in the selection DAG is rather +; difficult, so this test has to throw in some llvm.amdgcn.wqm to get them + +; LABEL: {{^}}test_to_i16: +; CHECK: s_endpgm +define amdgpu_ps void @test_to_i16(<4 x i32> inreg, <4 x half> inreg) #0 { + %a_tmp = call <4 x half> @llvm.amdgcn.wqm.v4f16(<4 x half> %1) + %a_i16_tmp = bitcast <4 x half> %a_tmp to <4 x i16> + %a_i16 = call <4 x i16> @llvm.amdgcn.wqm.v4i16(<4 x i16> %a_i16_tmp) + + %a_i32 = bitcast <4 x i16> %a_i16 to <2 x i32> + call void @llvm.amdgcn.raw.buffer.store.v2i32(<2 x i32> %a_i32, <4 x i32> %0, i32 0, i32 0, i32 0) + ret void +} + +; LABEL: {{^}}test_to_half: +; CHECK: s_endpgm +define amdgpu_ps void @test_to_half(<4 x i32> inreg, <4 x i16> inreg) #0 { + %a_tmp = call <4 x i16> @llvm.amdgcn.wqm.v4i16(<4 x i16> %1) + %a_half_tmp = bitcast <4 x i16> %a_tmp to <4 x half> + %a_half = call <4 x half> @llvm.amdgcn.wqm.v4f16(<4 x half> %a_half_tmp) + + %a_i32 = bitcast <4 x half> %a_half to <2 x i32> + call void @llvm.amdgcn.raw.buffer.store.v2i32(<2 x i32> %a_i32, <4 x i32> %0, i32 0, i32 0, i32 0) + ret void +} + +declare <4 x half> @llvm.amdgcn.wqm.v4f16(<4 x half>) #1 +declare <4 x i16> @llvm.amdgcn.wqm.v4i16(<4 x i16>) #1 +declare void @llvm.amdgcn.raw.buffer.store.v2i32(<2 x i32>, <4 x i32>, i32, i32, i32) #0 + +attributes #0 = { nounwind } +attributes #1 = { nounwind readonly }