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lower the last of the MRMInitReg instructions in MCInstLower.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95435 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2010-02-05 21:30:49 +00:00
parent 35e0e84f93
commit 28c1d29b09
3 changed files with 16 additions and 9 deletions
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7
lib/Target/X86/AsmPrinter/X86MCInstLower.cpp
View File

@ -380,6 +380,13 @@ void X86MCInstLower::Lower(const MachineInstr *MI, MCInst &OutMI) const {
case X86::SETB_C64r: LowerUnaryToTwoAddr(OutMI, X86::SBB64rr); break;
case X86::MOV8r0: LowerUnaryToTwoAddr(OutMI, X86::XOR8rr); break;
case X86::MOV32r0: LowerUnaryToTwoAddr(OutMI, X86::XOR32rr); break;
case X86::MMX_V_SET0: LowerUnaryToTwoAddr(OutMI, X86::MMX_PXORrr); break;
case X86::MMX_V_SETALLONES:
LowerUnaryToTwoAddr(OutMI, X86::MMX_PCMPEQDrr); break;
case X86::FsFLD0SS: LowerUnaryToTwoAddr(OutMI, X86::PXORrr); break;
case X86::V_SET0: LowerUnaryToTwoAddr(OutMI, X86::XORPSrr); break;
case X86::V_SETALLONES: LowerUnaryToTwoAddr(OutMI, X86::PCMPEQDrr); break;
case X86::MOV16r0:
LowerSubReg32_Op0(OutMI, X86::MOV32r0); // MOV16r0 -> MOV32r0
LowerUnaryToTwoAddr(OutMI, X86::XOR32rr); // MOV32r0 -> XOR32rr

7
lib/Target/X86/X86InstrMMX.td
View File

@ -536,11 +536,10 @@ def MMX_MASKMOVQ64: MMXI64<0xF7, MRMSrcReg, (outs), (ins VR64:$src, VR64:$mask),
// Alias instructions that map zero vector to pxor.
let isReMaterializable = 1, isCodeGenOnly = 1 in {
def MMX_V_SET0 : MMXI<0xEF, MRMInitReg, (outs VR64:$dst), (ins),
"pxor\t$dst, $dst",
// FIXME: Change encoding to pseudo.
def MMX_V_SET0 : MMXI<0xEF, MRMInitReg, (outs VR64:$dst), (ins), "",
[(set VR64:$dst, (v2i32 immAllZerosV))]>;
def MMX_V_SETALLONES : MMXI<0x76, MRMInitReg, (outs VR64:$dst), (ins),
"pcmpeqd\t$dst, $dst",
def MMX_V_SETALLONES : MMXI<0x76, MRMInitReg, (outs VR64:$dst), (ins), "",
[(set VR64:$dst, (v2i32 immAllOnesV))]>;
}

11
lib/Target/X86/X86InstrSSE.td
View File

@ -505,8 +505,9 @@ def Int_COMISSrm: PSI<0x2F, MRMSrcMem, (outs), (ins VR128:$src1, f128mem:$src2),
// Alias instructions that map fld0 to pxor for sse.
let isReMaterializable = 1, isAsCheapAsAMove = 1, isCodeGenOnly = 1,
canFoldAsLoad = 1 in
// FIXME: Set encoding to pseudo!
def FsFLD0SS : I<0xEF, MRMInitReg, (outs FR32:$dst), (ins),
"pxor\t$dst, $dst", [(set FR32:$dst, fp32imm0)]>,
"", [(set FR32:$dst, fp32imm0)]>,
Requires<[HasSSE1]>, TB, OpSize;
// Alias instruction to do FR32 reg-to-reg copy using movaps. Upper bits are
@ -1025,10 +1026,10 @@ def STMXCSR : PSI<0xAE, MRM3m, (outs), (ins i32mem:$dst),
// Alias instructions that map zero vector to pxor / xorp* for sse.
// We set canFoldAsLoad because this can be converted to a constant-pool
// load of an all-zeros value if folding it would be beneficial.
// FIXME: Change encoding to pseudo!
let isReMaterializable = 1, isAsCheapAsAMove = 1, canFoldAsLoad = 1,
isCodeGenOnly = 1 in
def V_SET0 : PSI<0x57, MRMInitReg, (outs VR128:$dst), (ins),
"xorps\t$dst, $dst",
def V_SET0 : PSI<0x57, MRMInitReg, (outs VR128:$dst), (ins), "",
[(set VR128:$dst, (v4i32 immAllZerosV))]>;
let Predicates = [HasSSE1] in {
@ -2329,8 +2330,8 @@ def : Pat<(membarrier (i8 imm:$ll), (i8 imm:$ls), (i8 imm:$sl), (i8 imm:$ss),
// load of an all-ones value if folding it would be beneficial.
let isReMaterializable = 1, isAsCheapAsAMove = 1, canFoldAsLoad = 1,
isCodeGenOnly = 1 in
def V_SETALLONES : PDI<0x76, MRMInitReg, (outs VR128:$dst), (ins),
"pcmpeqd\t$dst, $dst",
// FIXME: Change encoding to pseudo.
def V_SETALLONES : PDI<0x76, MRMInitReg, (outs VR128:$dst), (ins), "",
[(set VR128:$dst, (v4i32 immAllOnesV))]>;
// FR64 to 128-bit vector conversion.