diff options
Diffstat (limited to 'llvm/lib/Target/ARM/ARMInstrThumb.td')
| -rw-r--r-- | llvm/lib/Target/ARM/ARMInstrThumb.td | 21 |
1 files changed, 17 insertions, 4 deletions
diff --git a/llvm/lib/Target/ARM/ARMInstrThumb.td b/llvm/lib/Target/ARM/ARMInstrThumb.td index 5076b717ae2..1035c4b8c48 100644 --- a/llvm/lib/Target/ARM/ARMInstrThumb.td +++ b/llvm/lib/Target/ARM/ARMInstrThumb.td @@ -187,6 +187,19 @@ def t_addrmode_rr : MemOperand, let MIOperandInfo = (ops tGPR:$base, tGPR:$offsreg); } +// t_addrmode_rr_sext := reg + reg +// +// This is similar to t_addrmode_rr, but uses different heuristics for +// ldrsb/ldrsh. +def t_addrmode_rr_sext : MemOperand, + ComplexPattern<i32, 2, "SelectThumbAddrModeRRSext", []> { + let EncoderMethod = "getThumbAddrModeRegRegOpValue"; + let PrintMethod = "printThumbAddrModeRROperand"; + let DecoderMethod = "DecodeThumbAddrModeRR"; + let ParserMatchClass = t_addrmode_rr_asm_operand; + let MIOperandInfo = (ops tGPR:$base, tGPR:$offsreg); +} + // t_addrmode_rrs := reg + reg // // We use separate scaled versions because the Select* functions need @@ -731,17 +744,17 @@ defm tLDRH : thumb_ld_rr_ri_enc<0b101, 0b1000, t_addrmode_rr, let AddedComplexity = 10 in def tLDRSB : // A8.6.80 - T1pILdStEncode<0b011, (outs tGPR:$Rt), (ins t_addrmode_rr:$addr), + T1pILdStEncode<0b011, (outs tGPR:$Rt), (ins t_addrmode_rr_sext:$addr), AddrModeT1_1, IIC_iLoad_bh_r, "ldrsb", "\t$Rt, $addr", - [(set tGPR:$Rt, (sextloadi8 t_addrmode_rr:$addr))]>; + [(set tGPR:$Rt, (sextloadi8 t_addrmode_rr_sext:$addr))]>; let AddedComplexity = 10 in def tLDRSH : // A8.6.84 - T1pILdStEncode<0b111, (outs tGPR:$Rt), (ins t_addrmode_rr:$addr), + T1pILdStEncode<0b111, (outs tGPR:$Rt), (ins t_addrmode_rr_sext:$addr), AddrModeT1_2, IIC_iLoad_bh_r, "ldrsh", "\t$Rt, $addr", - [(set tGPR:$Rt, (sextloadi16 t_addrmode_rr:$addr))]>; + [(set tGPR:$Rt, (sextloadi16 t_addrmode_rr_sext:$addr))]>; def tSTRspi : T1pIs<(outs), (ins tGPR:$Rt, t_addrmode_sp:$addr), IIC_iStore_i, |
