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[micromips] Print instruction alias "not" if the last operand of a nor is zero. 

llvm-svn: 188851
This commit is contained in:
Akira Hatanaka 2013-08-21 01:18:46 +00:00
parent 5234b49854
commit 39f915b58a
2 changed files with 3 additions and 2 deletions
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1
llvm/lib/Target/Mips/InstPrinter/MipsInstPrinter.cpp
View File

@ -257,6 +257,7 @@ bool MipsInstPrinter::printAlias(const MCInst &MI, raw_ostream &OS) {
// jalr $ra, $r1 => jalr $r1
return isReg<Mips::RA_64>(MI, 0) && printAlias("jalr", MI, 1, OS);
case Mips::NOR:
case Mips::NOR_MM:
// nor $r0, $r1, $zero => not $r0, $r1
return isReg<Mips::ZERO>(MI, 2) && printAlias("not", MI, 0, 1, OS);
case Mips::NOR64:

4
llvm/test/MC/Mips/micromips-alu-instructions.s
View File

@ -32,7 +32,7 @@
# CHECK-EL: xori $9, $6, 17767 # encoding: [0x26,0x71,0x67,0x45]
# CHECK-EL: xori $9, $6, 17767 # encoding: [0x26,0x71,0x67,0x45]
# CHECK-EL: nor $9, $6, $7 # encoding: [0xe6,0x00,0xd0,0x4a]
# CHECK-EL: nor $7, $8, $zero # encoding: [0x08,0x00,0xd0,0x3a]
# CHECK-EL: not $7, $8 # encoding: [0x08,0x00,0xd0,0x3a]
# CHECK-EL: mul $9, $6, $7 # encoding: [0xe6,0x00,0x10,0x4a]
# CHECK-EL: mult $9, $7 # encoding: [0xe9,0x00,0x3c,0x8b]
# CHECK-EL: multu $9, $7 # encoding: [0xe9,0x00,0x3c,0x9b]
@ -64,7 +64,7 @@
# CHECK-EB: xori $9, $6, 17767 # encoding: [0x71,0x26,0x45,0x67]
# CHECK-EB: xori $9, $6, 17767 # encoding: [0x71,0x26,0x45,0x67]
# CHECK-EB: nor $9, $6, $7 # encoding: [0x00,0xe6,0x4a,0xd0]
# CHECK-EB: nor $7, $8, $zero # encoding: [0x00,0x08,0x3a,0xd0]
# CHECK-EB: not $7, $8 # encoding: [0x00,0x08,0x3a,0xd0]
# CHECK-EB: mul $9, $6, $7 # encoding: [0x00,0xe6,0x4a,0x10]
# CHECK-EB: mult $9, $7 # encoding: [0x00,0xe9,0x8b,0x3c]
# CHECK-EB: multu $9, $7 # encoding: [0x00,0xe9,0x9b,0x3c]