diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Target/ARM/ARMInstrInfo.td | 16 | ||||
| -rw-r--r-- | lib/Target/ARM/README.txt | 4 |
2 files changed, 20 insertions, 0 deletions
diff --git a/lib/Target/ARM/ARMInstrInfo.td b/lib/Target/ARM/ARMInstrInfo.td index 6582a5b264..23b2155c85 100644 --- a/lib/Target/ARM/ARMInstrInfo.td +++ b/lib/Target/ARM/ARMInstrInfo.td @@ -113,6 +113,22 @@ def ldr : InstARM<(ops IntRegs:$dst, memri:$addr), "ldr $dst, $addr", [(set IntRegs:$dst, (load iaddr:$addr))]>; +def LDRB : InstARM<(ops IntRegs:$dst, IntRegs:$addr), + "ldrb $dst, $addr", + [(set IntRegs:$dst, (zextloadi8 IntRegs:$addr))]>; + +def LDRSB : InstARM<(ops IntRegs:$dst, IntRegs:$addr), + "ldrsb $dst, $addr", + [(set IntRegs:$dst, (sextloadi8 IntRegs:$addr))]>; + +def LDRH : InstARM<(ops IntRegs:$dst, IntRegs:$addr), + "ldrh $dst, $addr", + [(set IntRegs:$dst, (zextloadi16 IntRegs:$addr))]>; + +def LDRSH : InstARM<(ops IntRegs:$dst, IntRegs:$addr), + "ldrsh $dst, $addr", + [(set IntRegs:$dst, (sextloadi16 IntRegs:$addr))]>; + def str : InstARM<(ops IntRegs:$src, memri:$addr), "str $src, $addr", [(store IntRegs:$src, iaddr:$addr)]>; diff --git a/lib/Target/ARM/README.txt b/lib/Target/ARM/README.txt index 768a2e6f3e..9e846565c8 100644 --- a/lib/Target/ARM/README.txt +++ b/lib/Target/ARM/README.txt @@ -51,3 +51,7 @@ Only needs 8 bytes of stack space. We currently allocate 16. should try to declare smull and umull as returning two values. ---------------------------------------------------------- + +Implement addressing modes 2 (ldrb) and 3 (ldrsb) + +---------------------------------------------------------- |