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Add support for unconditional branches and for emitting JE instructions

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7872 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2003-08-15 04:50:49 +00:00
parent c7df109b6c
commit 51970b2734
1 changed files with 15 additions and 3 deletions
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18
lib/Target/X86/X86InstrInfo.td
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@ -121,10 +121,10 @@ let isTerminator = 1, isReturn = 1 in
let isBranch = 1, isTerminator = 1 in
class IBr<string name, bits<8> opcode> : X86Inst<name, opcode, RawFrm, NoArg>;
def JMP : IBr<"jmp", 0xE9>;
def JMP : IBr<"jmp", 0xE9>, Pattern<(br basicblock)>;
def JB : IBr<"jb" , 0x82>, TB;
def JAE : IBr<"jae", 0x83>, TB;
def JE : IBr<"je" , 0x84>, TB;
def JE : IBr<"je" , 0x84>, TB, Pattern<(isVoid (unspec1 basicblock))>;
def JNE : IBr<"jne", 0x85>, TB;
def JBE : IBr<"jbe", 0x86>, TB;
def JA : IBr<"ja" , 0x87>, TB;
@ -318,7 +318,8 @@ def CMOVNErr32: I2A32<"cmovne",0x45, MRMSrcReg>, TB; // if !=, R3
// Integer comparisons
def CMPrr8 : X86Inst<"cmp", 0x38, MRMDestReg, Arg8 >; // compare R8, R8
def CMPrr16 : X86Inst<"cmp", 0x39, MRMDestReg, Arg16>, OpSize; // compare R16, R16
def CMPrr32 : X86Inst<"cmp", 0x39, MRMDestReg, Arg32>; // compare R32, R32
def CMPrr32 : X86Inst<"cmp", 0x39, MRMDestReg, Arg32>, // compare R32, R32
Pattern<(isVoid (unspec2 R32, R32))>;
def CMPri8 : X86Inst<"cmp", 0x80, MRMS7r , Arg8 >; // compare R8, imm8
def CMPri16 : X86Inst<"cmp", 0x81, MRMS7r , Arg16>, OpSize; // compare R16, imm16
def CMPri32 : X86Inst<"cmp", 0x81, MRMS7r , Arg32>; // compare R32, imm32
@ -451,3 +452,14 @@ def LOAD_FI32 : Expander<(set R32:$dest, (load frameidx:$fi)),
[(MOVmr32 R32:$dest, frameidx:$fi, 1, 0/*NoReg*/, 0)]>;
def LOAD_R16 : Expander<(set R16:$dest, (load R32:$src)),
[(MOVmr16 R16:$dest, R32:$src, 1, 0/*NoReg*/, 0)]>;
def LOAD_R32 : Expander<(set R32:$dest, (load R32:$src)),
[(MOVmr32 R32:$dest, R32:$src, 1, 0/*NoReg*/, 0)]>;
def BR_EQ : Expander<(brcond (seteq R32:$a1, R32:$a2),
basicblock:$d1, basicblock:$d2),
[(CMPrr32 R32:$a1, R32:$a2),
(JE basicblock:$d1),
(JMP basicblock:$d2)]>;