[mips] Make isel select the correct DEXT variant up front.

Summary:
Previously, it would always select DEXT and substitute any invalid matches
for DEXTU/DEXTM during MipsMCCodeEmitter::encodeInstruction(). This works
but causes problems when adding range checked immediates to IAS.

Now isel selects the correct variant up front.

Reviewers: vkalintiris

Subscribers: dsanders, llvm-commits

Differential Revision: http://reviews.llvm.org/D16810

llvm-svn: 262229

1 files changed, 3 insertions, 3 deletions

diff --git a/llvm/lib/Target/Mips/MicroMipsInstrInfo.td b/llvm/lib/Target/Mips/MicroMipsInstrInfo.td
index e441e11190a..6c0de02e6f2 100644
--- a/llvm/lib/Target/Mips/MicroMipsInstrInfo.td
+++ b/llvm/lib/Target/Mips/MicroMipsInstrInfo.td
@@ -845,10 +845,10 @@ let DecoderNamespace = "MicroMips", Predicates = [InMicroMips] in {
   def WSBH_MM : MMRel, SubwordSwap<"wsbh", GPR32Opnd, II_WSBH>,
                 SEB_FM_MM<0x1ec>, ISA_MIPS32R2;
   // TODO: Add '0 < pos+size <= 32' constraint check to ext instruction
-  def EXT_MM : MMRel, ExtBase<"ext", GPR32Opnd, uimm5, uimm5_plus1,
-                              MipsExt>, EXT_FM_MM<0x2c>;
+  def EXT_MM : MMRel, ExtBase<"ext", GPR32Opnd, uimm5, uimm5_plus1, immZExt5,
+                              immZExt5Plus1, MipsExt>, EXT_FM_MM<0x2c>;
   def INS_MM : MMRel, InsBase<"ins", GPR32Opnd, uimm5, uimm5_inssize_plus1,
-               MipsIns>, EXT_FM_MM<0x0c>;
+                              MipsIns>, EXT_FM_MM<0x0c>;
 
   /// Jump Instructions
   let DecoderMethod = "DecodeJumpTargetMM" in {