Simplify references to command line flags.

src/IceOperand.h

Index: src/IceOperand.h
diff --git a/src/IceOperand.h b/src/IceOperand.h
index d80bede0f7148032957a85eb64851b795f598756..04895f61b028d30c94ef4a46a57d39eab3573196 100644
--- a/src/IceOperand.h
+++ b/src/IceOperand.h
@@ -224,7 +224,7 @@ private:
     // human-readable sprintf form, changing '+' to 'p' and '-' to 'm' to
     // maintain valid asm labels.
     if (std::is_floating_point<PrimType>::value && !BuildDefs::minimal() &&
-        GlobalContext::getFlags().getDecorateAsm()) {
+        getFlags().getDecorateAsm()) {
       char Buf[30];
       snprintf(Buf, llvm::array_lengthof(Buf), "$%g", (double)Value);
       for (unsigned i = 0; i < llvm::array_lengthof(Buf) && Buf[i]; ++i) {