diff options
| -rw-r--r-- | lib/Target/ARM/ARMInstrInfo.td | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/Target/ARM/ARMInstrInfo.td b/lib/Target/ARM/ARMInstrInfo.td index 0b1406e657..e2160244f4 100644 --- a/lib/Target/ARM/ARMInstrInfo.td +++ b/lib/Target/ARM/ARMInstrInfo.td @@ -5252,6 +5252,10 @@ def : ARMInstAlias<"mul${s}${p} $Rn, $Rm", def : ARMInstAlias<"neg${s}${p} $Rd, $Rm", (RSBri GPR:$Rd, GPR:$Rm, 0, pred:$p, cc_out:$s)>; +// Pre-v6, 'mov r0, r0' was used as a NOP encoding. +def : InstAlias<"nop${p}", (MOVr R0, R0, pred:$p, zero_reg)>, + Requires<[IsARM, NoV6]>; + // 'it' blocks in ARM mode just validate the predicates. The IT itself // is discarded. def ITasm : ARMAsmPseudo<"it$mask $cc", (ins it_pred:$cc, it_mask:$mask)>; |