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Add support for 64-bit logical NOR.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141029 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Akira Hatanaka 2011-10-03 21:23:18 +00:00
parent 2d57088ff0
commit 43e43f7d8b
2 changed files with 15 additions and 0 deletions
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7
lib/Target/Mips/Mips64InstrInfo.td
View File

@ -72,6 +72,12 @@ class LogicI64<bits<6> op, string instr_asm, SDNode OpNode>:
!strconcat(instr_asm, "\t$dst, $b, $c"),
[(set CPU64Regs:$dst, (OpNode CPU64Regs:$b, immZExt16:$c))], IIAlu>;
let isCommutable = 1 in
class LogicNOR64<bits<6> op, bits<6> func, string instr_asm>:
FR<op, func, (outs CPU64Regs:$dst), (ins CPU64Regs:$b, CPU64Regs:$c),
!strconcat(instr_asm, "\t$dst, $b, $c"),
[(set CPU64Regs:$dst, (not (or CPU64Regs:$b, CPU64Regs:$c)))], IIAlu>;
// Shifts
class LogicR_shift_rotate_imm64<bits<6> func, bits<5> _rs, string instr_asm,
SDNode OpNode, PatFrag PF>:
@ -141,6 +147,7 @@ def DSUBu : ArithR64<0x00, 0x2f, "dsubu", sub, IIAlu>;
def DAND : LogicR64<0x24, "and", and>;
def DOR : LogicR64<0x25, "or", or>;
def DXOR : LogicR64<0x26, "xor", xor>;
def DNOR : LogicNOR64<0x00, 0x27, "nor">;
/// Shift Instructions
def DSLL : LogicR_shift_rotate_imm64<0x38, 0x00, "dsll", shl, immZExt5>;

8
test/CodeGen/Mips/mips64instrs.ll
View File

@ -133,3 +133,11 @@ entry:
ret i64 %tmp1
}
define i64 @f20(i64 %a, i64 %b) nounwind readnone {
entry:
; CHECK: nor
%or = or i64 %b, %a
%neg = xor i64 %or, -1
ret i64 %neg
}