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| author | Jim Grosbach <grosbach@apple.com> | 2012-03-07 00:52:41 +0000 |
|---|---|---|
| committer | Jim Grosbach <grosbach@apple.com> | 2012-03-07 00:52:41 +0000 |
| commit | 0104dd3ffd75b9620610b63eaa72f573f5a20752 (patch) | |
| tree | c8a7501b943cb04073dd5ca38573b75df7f8db4d /lib/Target | |
| parent | ff3164a1893c61dc0b7169dba9705c2d8e80dfec (diff) | |
| download | external_llvm-0104dd3ffd75b9620610b63eaa72f573f5a20752.zip external_llvm-0104dd3ffd75b9620610b63eaa72f573f5a20752.tar.gz external_llvm-0104dd3ffd75b9620610b63eaa72f573f5a20752.tar.bz2 | |
ARM pre-v6 alias for 'nop' to 'mov r0, r0'
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152185 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target')
| -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 0b1406e..e216024 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)>; |