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Intel Syntax: Extend special hand coded logic, to recognize special instructions, for intel syntax.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148864 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel 2012-01-24 21:43:36 +00:00
parent 5387f2e4f3
commit 3b96e1fe3b
2 changed files with 18 additions and 5 deletions
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20
lib/Target/X86/AsmParser/X86AsmParser.cpp
View File

@ -1168,11 +1168,21 @@ ParseInstruction(StringRef Name, SMLoc NameLoc,
Name.startswith("rcl") || Name.startswith("rcr") ||
Name.startswith("rol") || Name.startswith("ror")) &&
Operands.size() == 3) {
X86Operand *Op1 = static_cast<X86Operand*>(Operands[1]);
if (Op1->isImm() && isa<MCConstantExpr>(Op1->getImm()) &&
cast<MCConstantExpr>(Op1->getImm())->getValue() == 1) {
delete Operands[1];
Operands.erase(Operands.begin() + 1);
if (getParser().getAssemblerDialect()) {
// Intel syntax
X86Operand *Op1 = static_cast<X86Operand*>(Operands[2]);
if (Op1->isImm() && isa<MCConstantExpr>(Op1->getImm()) &&
cast<MCConstantExpr>(Op1->getImm())->getValue() == 1) {
delete Operands[2];
Operands.pop_back();
}
} else {
X86Operand *Op1 = static_cast<X86Operand*>(Operands[1]);
if (Op1->isImm() && isa<MCConstantExpr>(Op1->getImm()) &&
cast<MCConstantExpr>(Op1->getImm())->getValue() == 1) {
delete Operands[1];
Operands.erase(Operands.begin() + 1);
}
}
}

3
test/MC/X86/intel-syntax-encoding.s
View File

@ -36,3 +36,6 @@ LBB0_3:
jmp LBB0_3
// CHECK: encoding: [0xf2,0x0f,0x10,0x2c,0x25,0xf8,0xff,0xff,0xff]
movsd XMM5, QWORD PTR [-8]
// CHECK: encoding: [0xd1,0xe7]
shl EDI, 1