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make formatting of expressions more closely match the existing asmprinter. 

llvm-svn: 81202
This commit is contained in:
Chris Lattner 2009-09-08 06:34:07 +00:00
parent a0020be758
commit 3cfc551f6e
1 changed files with 19 additions and 6 deletions
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25
llvm/lib/MC/MCExpr.cpp
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@ -39,9 +39,16 @@ void MCExpr::print(raw_ostream &OS, const MCAsmInfo *MAI) const {
case MCExpr::Binary: {
const MCBinaryExpr &BE = cast<MCBinaryExpr>(*this);
OS << '(';
BE.getLHS()->print(OS, MAI);
OS << ' ';
// Only print parens around the LHS if it is non-trivial.
if (isa<MCConstantExpr>(BE.getLHS()) || isa<MCSymbolRefExpr>(BE.getLHS())) {
BE.getLHS()->print(OS, MAI);
} else {
OS << '(';
BE.getLHS()->print(OS, MAI);
OS << ')';
}
switch (BE.getOpcode()) {
default: assert(0 && "Invalid opcode!");
case MCBinaryExpr::Add: OS << '+'; break;
@ -63,9 +70,15 @@ void MCExpr::print(raw_ostream &OS, const MCAsmInfo *MAI) const {
case MCBinaryExpr::Sub: OS << '-'; break;
case MCBinaryExpr::Xor: OS << '^'; break;
}
OS << ' ';
BE.getRHS()->print(OS, MAI);
OS << ')';
// Only print parens around the LHS if it is non-trivial.
if (isa<MCConstantExpr>(BE.getRHS()) || isa<MCSymbolRefExpr>(BE.getRHS())) {
BE.getRHS()->print(OS, MAI);
} else {
OS << '(';
BE.getRHS()->print(OS, MAI);
OS << ')';
}
return;
}
}