diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Target/ARM/ARMInstrThumb.td | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/lib/Target/ARM/ARMInstrThumb.td b/lib/Target/ARM/ARMInstrThumb.td index b332042f57..94150195ae 100644 --- a/lib/Target/ARM/ARMInstrThumb.td +++ b/lib/Target/ARM/ARMInstrThumb.td @@ -701,13 +701,19 @@ 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 +// If it's impossible to use [r,r] address mode for sextload, select to // ldr{b|h} + sxt{b|h} instead. def : T1Pat<(sextloadi8 t_addrmode_s1:$addr), - (tSXTB (tLDRB t_addrmode_s1:$addr))>; + (tSXTB (tLDRB t_addrmode_s1:$addr))>, + Requires<[IsThumb1Only, HasV6]>; def : T1Pat<(sextloadi16 t_addrmode_s2:$addr), - (tSXTH (tLDRH t_addrmode_s2:$addr))>; + (tSXTH (tLDRH t_addrmode_s2:$addr))>, + Requires<[IsThumb1Only, HasV6]>; +def : T1Pat<(sextloadi8 t_addrmode_s1:$addr), + (tASRri (tLSLri (tLDRB t_addrmode_s1:$addr), 24), 24)>; +def : T1Pat<(sextloadi16 t_addrmode_s1:$addr), + (tASRri (tLSLri (tLDRH t_addrmode_s1:$addr), 16), 16)>; // Large immediate handling. |