[mips][microMIPS] Make usage of NOT16 by code generator

Differential Revision: http://reviews.llvm.org/D7748

llvm-svn: 231963

2 files changed, 4 insertions, 0 deletions

diff --git a/llvm/lib/Target/Mips/MicroMipsInstrInfo.td b/llvm/lib/Target/Mips/MicroMipsInstrInfo.td
index 19120202af7..2aab739dbd2 100644
--- a/llvm/lib/Target/Mips/MicroMipsInstrInfo.td
+++ b/llvm/lib/Target/Mips/MicroMipsInstrInfo.td
@@ -885,6 +885,8 @@ def : MipsPat<(i32 immSExt16:$imm),
               (ADDiu_MM ZERO, immSExt16:$imm)>;
 def : MipsPat<(i32 immZExt16:$imm),
               (ORi_MM ZERO, immZExt16:$imm)>;
+def : MipsPat<(not GPR32:$in),
+              (NOR_MM GPR32Opnd:$in, ZERO)>;
 
 def : MipsPat<(add GPRMM16:$src, immSExtAddiur2:$imm),
               (ADDIUR2_MM GPRMM16:$src, immSExtAddiur2:$imm)>;
diff --git a/llvm/lib/Target/Mips/MipsInstrInfo.td b/llvm/lib/Target/Mips/MipsInstrInfo.td
index 3955a6249f3..e543641ceaa 100644
--- a/llvm/lib/Target/Mips/MipsInstrInfo.td
+++ b/llvm/lib/Target/Mips/MipsInstrInfo.td
@@ -1763,9 +1763,11 @@ def : WrapperPat<tblockaddress, ADDiu, GPR32>;
 def : WrapperPat<tjumptable, ADDiu, GPR32>;
 def : WrapperPat<tglobaltlsaddr, ADDiu, GPR32>;
 
+let AdditionalPredicates = [NotInMicroMips] in {
 // Mips does not have "not", so we expand our way
 def : MipsPat<(not GPR32:$in),
               (NOR GPR32Opnd:$in, ZERO)>;
+}
 
 // extended loads
 def : MipsPat<(i32 (extloadi1  addr:$src)), (LBu addr:$src)>;