[mips][microMIPS] Implement JALX instruction

Differential Revision: http://reviews.llvm.org/D5047

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229702 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/Mips/MicroMipsInstrInfo.td b/lib/Target/Mips/MicroMipsInstrInfo.td
index bf979a0c3a0f744ff66d2fe5f9f931220f65bc2b..e20df2f4e628265d3feb656fd0ad69ecfb5c9563 100644 (file)
--- a/lib/Target/Mips/MicroMipsInstrInfo.td
+++ b/lib/Target/Mips/MicroMipsInstrInfo.td
@@ -788,6 +788,7 @@ let DecoderNamespace = "MicroMips", Predicates = [InMicroMips] in {
     def J_MM        : MMRel, JumpFJ<jmptarget_mm, "j", br, bb, "j">,
                       J_FM_MM<0x35>;
     def JAL_MM      : MMRel, JumpLink<"jal", calltarget_mm>, J_FM_MM<0x3d>;
+    def JALX_MM     : MMRel, JumpLink<"jalx", calltarget>, J_FM_MM<0x3c>;
   }
   def JR_MM   : MMRel, IndirectBranch<"jr", GPR32Opnd>, JR_FM_MM<0x3c>;
   def JALR_MM : JumpLinkReg<"jalr", GPR32Opnd>, JALR_FM_MM<0x03c>;

diff --git a/lib/Target/Mips/MipsInstrInfo.td b/lib/Target/Mips/MipsInstrInfo.td
index 38a1d03eb024edc53c6d2694e9479b57556629c7..9a35a2dfb501ef62b73267ed36b689823c049983 100644 (file)
--- a/lib/Target/Mips/MipsInstrInfo.td
+++ b/lib/Target/Mips/MipsInstrInfo.td
@@ -1314,8 +1314,8 @@ let AdditionalPredicates = [NotInMicroMips] in {
   def JALRPseudo : JumpLinkRegPseudo<GPR32Opnd, JALR, RA>;
 }
 
-// FIXME: JALX really requires either MIPS16 or microMIPS in addition to MIPS32.
-def JALX  : JumpLink<"jalx", calltarget>, FJ<0x1D>, ISA_MIPS32_NOT_32R6_64R6;
+def JALX : MMRel, JumpLink<"jalx", calltarget>, FJ<0x1D>,
+           ISA_MIPS32_NOT_32R6_64R6;
 def BGEZAL : MMRel, BGEZAL_FT<"bgezal", brtarget, GPR32Opnd>, BGEZAL_FM<0x11>,
              ISA_MIPS1_NOT_32R6_64R6;
 def BGEZALL : MMRel, BGEZAL_FT<"bgezall", brtarget, GPR32Opnd, 0>,

diff --git a/test/MC/Mips/micromips-jump-instructions.s b/test/MC/Mips/micromips-jump-instructions.s
index 945d87d293472b4cd611555228ef5373d8804bdc..3147a3f256d4d80d44ab7bb0ed218d2f1d49772b 100644 (file)
--- a/test/MC/Mips/micromips-jump-instructions.s
+++ b/test/MC/Mips/micromips-jump-instructions.s
@@ -19,6 +19,8 @@
 # CHECK-EL: nop         # encoding: [0x00,0x00,0x00,0x00]
 # CHECK-EL: jr $7       # encoding: [0x07,0x00,0x3c,0x0f]
 # CHECK-EL: nop         # encoding: [0x00,0x00,0x00,0x00]
+# CHECK-EL: jalx 1328   # encoding: [0x00,0xf0,0x4c,0x01]
+# CHECK-EL: nop         # encoding: [0x00,0x00,0x00,0x00]
 # CHECK-EL: jals 1328         # encoding: [0x00,0x74,0x98,0x02]
 # CHECK-EL: nop               # encoding: [0x00,0x0c]
 # CHECK-EL: jalrs $ra, $6     # encoding: [0xe6,0x03,0x3c,0x4f]
@@ -40,6 +42,8 @@
 # CHECK-EB: nop         # encoding: [0x00,0x00,0x00,0x00]
 # CHECK-EB: jr $7       # encoding: [0x00,0x07,0x0f,0x3c]
 # CHECK-EB: nop         # encoding: [0x00,0x00,0x00,0x00]
+# CHECK-EB: jalx 1328   # encoding: [0xf0,0x00,0x01,0x4c]
+# CHECK-EB: nop         # encoding: [0x00,0x00,0x00,0x00]
 # CHECK-EB: jals 1328         # encoding: [0x74,0x00,0x02,0x98]
 # CHECK-EB: nop               # encoding: [0x0c,0x00]
 # CHECK-EB: jalrs $ra, $6     # encoding: [0x03,0xe6,0x4f,0x3c]
@@ -54,6 +58,7 @@
      jalr $ra, $6
      jr $7
      j $7
+     jalx 1328
      jals 1328
      jalrs $ra, $6
      jal $25