def AMDGPUbfm : SDNode<"AMDGPUISD::BFM", SDTIntBinOp>;
def AMDGPUffbh_u32 : SDNode<"AMDGPUISD::FFBH_U32", SDTIntUnaryOp>;
-def AMDGPUffbh_i32 : SDNode<"AMDGPUISD::FFBH_I32", SDTIntUnaryOp>;
+def AMDGPUffbh_i32_impl : SDNode<"AMDGPUISD::FFBH_I32", SDTIntUnaryOp>;
def AMDGPUffbl_b32 : SDNode<"AMDGPUISD::FFBL_B32", SDTIntUnaryOp>;
def AMDGPUfmed3 : PatFrags<(ops node:$src0, node:$src1, node:$src2),
[(int_amdgcn_fmed3 node:$src0, node:$src1, node:$src2),
(AMDGPUfmed3_impl node:$src0, node:$src1, node:$src2)]>;
+
+def AMDGPUffbh_i32 : PatFrags<(ops node:$src),
+ [(int_amdgcn_sffbh node:$src),
+ (AMDGPUffbh_i32_impl node:$src)]>;
defm V_BFREV_B32 : VOP1Inst <"v_bfrev_b32", VOP_I32_I32, bitreverse>;
defm V_FFBH_U32 : VOP1Inst <"v_ffbh_u32", VOP_I32_I32>;
defm V_FFBL_B32 : VOP1Inst <"v_ffbl_b32", VOP_I32_I32>;
-defm V_FFBH_I32 : VOP1Inst <"v_ffbh_i32", VOP_I32_I32>;
+defm V_FFBH_I32 : VOP1Inst <"v_ffbh_i32", VOP_I32_I32, AMDGPUffbh_i32>;
let SchedRW = [WriteDoubleAdd] in {
defm V_FREXP_EXP_I32_F64 : VOP1Inst <"v_frexp_exp_i32_f64", VOP_I32_F64, int_amdgcn_frexp_exp>;
--- /dev/null
+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
+# RUN: llc -march=amdgcn -mcpu=tahiti -run-pass=instruction-select -verify-machineinstrs %s -o - | FileCheck %s
+
+---
+name: sffbh_s32_ss
+legalized: true
+regBankSelected: true
+tracksRegLiveness: true
+
+body: |
+ bb.0:
+ liveins: $sgpr0
+
+ ; CHECK-LABEL: name: sffbh_s32_ss
+ ; CHECK: liveins: $sgpr0
+ ; CHECK: [[COPY:%[0-9]+]]:sreg_32 = COPY $sgpr0
+ ; CHECK: [[S_FLBIT_I32_:%[0-9]+]]:sreg_32 = S_FLBIT_I32 [[COPY]]
+ ; CHECK: S_ENDPGM 0, implicit [[S_FLBIT_I32_]]
+ %0:sgpr(s32) = COPY $sgpr0
+ %1:sgpr(s32) = G_INTRINSIC intrinsic(@llvm.amdgcn.sffbh), %0
+ S_ENDPGM 0, implicit %1
+...
+
+---
+name: sffbh_s32_vs
+legalized: true
+regBankSelected: true
+tracksRegLiveness: true
+
+body: |
+ bb.0:
+ liveins: $sgpr0
+
+ ; CHECK-LABEL: name: sffbh_s32_vs
+ ; CHECK: liveins: $sgpr0
+ ; CHECK: [[COPY:%[0-9]+]]:sreg_32_xm0 = COPY $sgpr0
+ ; CHECK: [[V_FFBH_I32_e64_:%[0-9]+]]:vgpr_32 = V_FFBH_I32_e64 [[COPY]], implicit $exec
+ ; CHECK: S_ENDPGM 0, implicit [[V_FFBH_I32_e64_]]
+ %0:sgpr(s32) = COPY $sgpr0
+ %1:vgpr(s32) = G_INTRINSIC intrinsic(@llvm.amdgcn.sffbh), %0
+ S_ENDPGM 0, implicit %1
+...
+
+---
+name: sffbh_s32_vv
+legalized: true
+regBankSelected: true
+tracksRegLiveness: true
+
+body: |
+ bb.0:
+ liveins: $vgpr0
+
+ ; CHECK-LABEL: name: sffbh_s32_vv
+ ; CHECK: liveins: $vgpr0
+ ; CHECK: [[COPY:%[0-9]+]]:vgpr_32 = COPY $vgpr0
+ ; CHECK: [[V_FFBH_I32_e64_:%[0-9]+]]:vgpr_32 = V_FFBH_I32_e64 [[COPY]], implicit $exec
+ ; CHECK: S_ENDPGM 0, implicit [[V_FFBH_I32_e64_]]
+ %0:vgpr(s32) = COPY $vgpr0
+ %1:vgpr(s32) = G_INTRINSIC intrinsic(@llvm.amdgcn.sffbh), %0
+ S_ENDPGM 0, implicit %1
+...