[X86][Asm] Allow negative immediate to appear before bracketed expression

Currently, only non-negative immediate is allowed prior to a brac expression (memory reference).
MASM / GAS does not have any problem cope with the left side of the real line, so we should be able to as well.

Differntial Revision: https://reviews.llvm.org/D36229

llvm-svn: 310528

1 files changed, 0 insertions, 5 deletions

diff --git a/llvm/lib/Target/X86/AsmParser/X86AsmParser.cpp b/llvm/lib/Target/X86/AsmParser/X86AsmParser.cpp
index dd6727a5e99..fd083b09366 100644
--- a/llvm/lib/Target/X86/AsmParser/X86AsmParser.cpp
+++ b/llvm/lib/Target/X86/AsmParser/X86AsmParser.cpp
@@ -1962,11 +1962,6 @@ std::unique_ptr<X86Operand> X86AsmParser::ParseIntelOperand() {
     return X86Operand::CreateImm(ImmExpr, Start, End);
   }
 
-  // Only positive immediates are valid.
-  if (Imm < 0)
-    return ErrorOperand(Start, "expected a positive immediate displacement "
-                               "before bracketed expr.");
-
   return ParseIntelBracExpression(/*SegReg=*/0, Start, Imm, isSymbol, Size);
 }