diff options
Diffstat (limited to 'lib/Target/ARM/ARMInstrThumb.td')
| -rw-r--r-- | lib/Target/ARM/ARMInstrThumb.td | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/lib/Target/ARM/ARMInstrThumb.td b/lib/Target/ARM/ARMInstrThumb.td index a473a20..f2c5a46 100644 --- a/lib/Target/ARM/ARMInstrThumb.td +++ b/lib/Target/ARM/ARMInstrThumb.td @@ -224,10 +224,12 @@ def tLDRH : T1pI2<(outs tGPR:$dst), (ins t_addrmode_s2:$addr), "ldrh", " $dst, $addr", [(set tGPR:$dst, (zextloadi16 t_addrmode_s2:$addr))]>; +let AddedComplexity = 10 in def tLDRSB : T1pI1<(outs tGPR:$dst), (ins t_addrmode_rr:$addr), "ldrsb", " $dst, $addr", [(set tGPR:$dst, (sextloadi8 t_addrmode_rr:$addr))]>; +let AddedComplexity = 10 in def tLDRSH : T1pI2<(outs tGPR:$dst), (ins t_addrmode_rr:$addr), "ldrsh", " $dst, $addr", [(set tGPR:$dst, (sextloadi16 t_addrmode_rr:$addr))]>; @@ -620,6 +622,14 @@ def : T1Pat<(extloadi1 t_addrmode_s1:$addr), (tLDRB t_addrmode_s1:$addr)>; def : T1Pat<(extloadi8 t_addrmode_s1:$addr), (tLDRB t_addrmode_s1:$addr)>; def : T1Pat<(extloadi16 t_addrmode_s2:$addr), (tLDRH t_addrmode_s2:$addr)>; +// If it's possible to use [r,r] address mode for sextload, select to +// ldr{b|h} + sxt{b|h} instead. +def : TPat<(sextloadi8 t_addrmode_s1:$addr), + (tSXTB (tLDRB t_addrmode_s1:$addr))>; +def : TPat<(sextloadi16 t_addrmode_s2:$addr), + (tSXTH (tLDRH t_addrmode_s2:$addr))>; + + // Large immediate handling. // Two piece imms. |