diff options
Diffstat (limited to 'lib/Target/ARM/ARMInstrInfo.td')
| -rw-r--r-- | lib/Target/ARM/ARMInstrInfo.td | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/lib/Target/ARM/ARMInstrInfo.td b/lib/Target/ARM/ARMInstrInfo.td index 6fa99aec3f..09ce5528c5 100644 --- a/lib/Target/ARM/ARMInstrInfo.td +++ b/lib/Target/ARM/ARMInstrInfo.td @@ -2257,6 +2257,8 @@ def : ARMV6Pat<(or (and GPR:$src1, 0xFFFF), (shl GPR:$src2, imm16_31:$shamt)), (PKHBT GPR:$src1, GPR:$src2, imm16_31:$shamt)>; +// Note: Shifts of 1-15 bits will be transformed to srl instead of sra and +// will match the pattern below. def PKHTB : AMiscA1I<0b01101000, (outs GPR:$dst), (ins GPR:$src1, GPR:$src2, i32imm:$shamt), IIC_iALUsi, "pkhtb", "\t$dst, $src1, $src2, asr $shamt", @@ -2268,8 +2270,8 @@ def PKHTB : AMiscA1I<0b01101000, (outs GPR:$dst), // Alternate cases for PKHTB where identities eliminate some nodes. Note that // a shift amount of 0 is *not legal* here, it is PKHBT instead. -def : ARMV6Pat<(or (and GPR:$src1, 0xFFFF0000), (srl GPR:$src2, (i32 16))), - (PKHTB GPR:$src1, GPR:$src2, 16)>; +def : ARMV6Pat<(or (and GPR:$src1, 0xFFFF0000), (srl GPR:$src2, imm16_31:$sh)), + (PKHTB GPR:$src1, GPR:$src2, imm16_31:$sh)>; def : ARMV6Pat<(or (and GPR:$src1, 0xFFFF0000), (and (srl GPR:$src2, imm1_15:$shamt), 0xFFFF)), (PKHTB GPR:$src1, GPR:$src2, imm1_15:$shamt)>; |