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Intel syntax: There is no need to create unary expr for simple negative displacement.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148486 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel 2012-01-19 18:15:51 +00:00
parent ac0f048602
commit e60540f380
2 changed files with 5 additions and 1 deletions
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2
lib/Target/X86/AsmParser/X86AsmParser.cpp
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@ -651,7 +651,7 @@ X86Operand *X86AsmParser::ParseIntelBracExpression(unsigned Size) {
Scale = Val; Scale = Val;
} else if (getLexer().is(AsmToken::RBrac)) { } else if (getLexer().is(AsmToken::RBrac)) {
const MCExpr *ValExpr = MCConstantExpr::Create(Val, getContext()); const MCExpr *ValExpr = MCConstantExpr::Create(Val, getContext());
Disp = isPlus ? ValExpr : MCUnaryExpr::CreateMinus(ValExpr, getContext()); Disp = isPlus ? ValExpr : MCConstantExpr::Create(0-Val, getContext());
} else } else
return ErrorOperand(PlusLoc, "unexpected token after +"); return ErrorOperand(PlusLoc, "unexpected token after +");
} else if (getLexer().is(AsmToken::Identifier)) { } else if (getLexer().is(AsmToken::Identifier)) {

4
test/MC/X86/intel-syntax-encoding.s
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@ -20,3 +20,7 @@
cmp eax, 12 cmp eax, 12
// CHECK: encoding: [0x48,0x83,0xf8,0x0c] // CHECK: encoding: [0x48,0x83,0xf8,0x0c]
cmp rax, 12 cmp rax, 12
// CHECK: encoding: [0x48,0x89,0x44,0x24,0xf0]
mov QWORD PTR [RSP - 16], RAX