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[mips][microMIPS] Implement JALX instruction 

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

llvm-svn: 229702
This commit is contained in:
Jozef Kolek 2015-02-18 17:15:48 +00:00
parent 8370908667
commit 1fd6548297
3 changed files with 8 additions and 2 deletions
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1
llvm/lib/Target/Mips/MicroMipsInstrInfo.td
View File

@ -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>;

4
llvm/lib/Target/Mips/MipsInstrInfo.td
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@ -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>,

5
llvm/test/MC/Mips/micromips-jump-instructions.s
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@ -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