[mips] Implement %hi(sym1 - sym2) and %lo(sym1 - sym2) expressions
Patch implements %hi(sym1 - sym2) and %lo(sym1 - sym2) expressions for MIPS
by creating target expression class MipsMCExpr.
Patch by Sasa Stankovic.
Differential Revision: http://llvm-reviews.chandlerc.com/D2592
llvm-svn: 200783
diff --git a/llvm/lib/Target/Mips/InstPrinter/MipsInstPrinter.cpp b/llvm/lib/Target/Mips/InstPrinter/MipsInstPrinter.cpp
index 82deec1..de724d3 100644
--- a/llvm/lib/Target/Mips/InstPrinter/MipsInstPrinter.cpp
+++ b/llvm/lib/Target/Mips/InstPrinter/MipsInstPrinter.cpp
@@ -14,6 +14,7 @@
#define DEBUG_TYPE "asm-printer"
#include "MipsInstPrinter.h"
#include "MipsInstrInfo.h"
+#include "MCTargetDesc/MipsMCExpr.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCInst.h"
@@ -129,8 +130,10 @@
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(BE->getRHS());
assert(SRE && CE && "Binary expression must be sym+const.");
Offset = CE->getValue();
- }
- else if (!(SRE = dyn_cast<MCSymbolRefExpr>(Expr)))
+ } else if (const MipsMCExpr *ME = dyn_cast<MipsMCExpr>(Expr)) {
+ ME->print(OS);
+ return;
+ } else if (!(SRE = dyn_cast<MCSymbolRefExpr>(Expr)))
assert(false && "Unexpected MCExpr type.");
MCSymbolRefExpr::VariantKind Kind = SRE->getKind();