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Replace a gross hack (the MOV64ri_alt instruction) with a slightly less
gross hack (having the asmmatcher handle the alias). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115685 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -834,6 +834,15 @@ ParseInstruction(StringRef Name, SMLoc NameLoc,
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if (getLexer().is(AsmToken::EndOfStatement))
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Parser.Lex(); // Consume the EndOfStatement
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// Hack to allow 'movq <largeimm>, <reg>' as an alias for movabsq.
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if ((Name == "movq" || Name == "mov") && Operands.size() == 3 &&
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static_cast<X86Operand*>(Operands[2])->isReg() &&
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static_cast<X86Operand*>(Operands[1])->isImm() &&
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!static_cast<X86Operand*>(Operands[1])->isImmSExti64i32()) {
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delete Operands[0];
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Operands[0] = X86Operand::CreateToken("movabsq", NameLoc);
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}
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// FIXME: Hack to handle recognize s{hr,ar,hl} $1, <op>. Canonicalize to
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// "shift <op>".
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if ((Name.startswith("shr") || Name.startswith("sar") ||
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@ -1139,7 +1148,6 @@ MatchAndEmitInstruction(SMLoc IDLoc,
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Operands[0] = X86Operand::CreateToken(Repl, IDLoc);
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}
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bool WasOriginallyInvalidOperand = false;
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unsigned OrigErrorInfo;
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MCInst Inst;
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@ -343,7 +343,7 @@ def NEG64m : RI<0xF7, MRM3m, (outs), (ins i64mem:$dst), "neg{q}\t$dst",
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} // Defs = [EFLAGS]
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// FIXME: NOT sets EFLAGS!
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// Note: NOT does not set EFLAGS!
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let Constraints = "$src1 = $dst" in {
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// Match xor -1 to not. Favors these over a move imm + xor to save code size.
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@ -762,15 +762,6 @@ def CMPS64 : RI<0xA7, RawFrm, (outs), (ins), "cmpsq", []>;
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// Move Instructions.
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//
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// The assembler accepts movq of a 64-bit immediate as an alternate spelling of
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// movabsq.
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let isAsmParserOnly = 1 in {
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// FIXME: Alias??
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def MOV64ri_alt : RIi64<0xB8, AddRegFrm, (outs GR64:$dst), (ins i64imm:$src),
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"mov{q}\t{$src, $dst|$dst, $src}", []>;
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}
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let neverHasSideEffects = 1 in {
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def MOV8rr : I<0x88, MRMDestReg, (outs GR8 :$dst), (ins GR8 :$src),
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"mov{b}\t{$src, $dst|$dst, $src}", []>;
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@ -596,7 +596,7 @@ movl 0, %eax // CHECK: movl 0, %eax # encoding: [0x8b,0x04,0x25,0x00,0x00,0x00
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// CHECK: encoding: [0x48,0xb8,0x02,0x00,0x00,0x00,0x00,0x00,0xff,0xff]
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movabsq $0xFFFF000000000002, %rax
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// CHECK: movq $-281474976710654, %rax
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// CHECK: movabsq $-281474976710654, %rax
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// CHECK: encoding: [0x48,0xb8,0x02,0x00,0x00,0x00,0x00,0x00,0xff,0xff]
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movq $0xFFFF000000000002, %rax
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@ -84,11 +84,11 @@
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// CHECK: encoding: [0x48,0x05,0xff,0xff,0x00,0x00]
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addq $0xFFFF, %rax
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// CHECK: movq $4294967168, %rax
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// CHECK: movabsq $4294967168, %rax
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// CHECK: encoding: [0x48,0xb8,0x80,0xff,0xff,0xff,0x00,0x00,0x00,0x00]
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movq $0xFFFFFF80, %rax
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// CHECK: movq $4294967295, %rax
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// CHECK: movabsq $4294967295, %rax
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// CHECK: encoding: [0x48,0xb8,0xff,0xff,0xff,0xff,0x00,0x00,0x00,0x00]
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movq $0xFFFFFFFF, %rax
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