diff options
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Target/BPF/BPFInstrInfo.td | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/llvm/lib/Target/BPF/BPFInstrInfo.td b/llvm/lib/Target/BPF/BPFInstrInfo.td index d4f9c488f67..88f774cb11f 100644 --- a/llvm/lib/Target/BPF/BPFInstrInfo.td +++ b/llvm/lib/Target/BPF/BPFInstrInfo.td @@ -583,3 +583,23 @@ def LD_ABS_W : LOAD_ABS<BPF_W, "u32", int_bpf_load_word>; def LD_IND_B : LOAD_IND<BPF_B, "u8", int_bpf_load_byte>; def LD_IND_H : LOAD_IND<BPF_H, "u16", int_bpf_load_half>; def LD_IND_W : LOAD_IND<BPF_W, "u32", int_bpf_load_word>; + +let isCodeGenOnly = 1 in { + def MOV_32_64 : ALU_RR<BPF_ALU, BPF_MOV, + (outs GPR:$dst), (ins GPR32:$src), + "$dst = $src", []>; +} + +def : Pat<(i64 (sext GPR32:$src)), + (SRA_ri (SLL_ri (MOV_32_64 GPR32:$src), 32), 32)>; + +def : Pat<(i64 (zext GPR32:$src)), + (SRL_ri (SLL_ri (MOV_32_64 GPR32:$src), 32), 32)>; + +// For i64 -> i32 truncation, use the 32-bit subregister directly. +def : Pat<(i32 (trunc GPR:$src)), + (i32 (EXTRACT_SUBREG GPR:$src, sub_32))>; + +// For i32 -> i64 anyext, we don't care about the high bits. +def : Pat<(i64 (anyext GPR32:$src)), + (INSERT_SUBREG (i64 (IMPLICIT_DEF)), GPR32:$src, sub_32)>; |
