Emit:
l3_reg109 = l81_this->field0;
Instead of:
l3_reg109 = l81_this[0u].field0;
where possible
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2579 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/CBackend/Writer.cpp b/lib/Target/CBackend/Writer.cpp
index 00b00ab..5da8367 100644
--- a/lib/Target/CBackend/Writer.cpp
+++ b/lib/Target/CBackend/Writer.cpp
@@ -517,8 +517,19 @@
void CInstPrintVisitor::printIndexingExpr(MemAccessInst *MAI) {
CW.writeOperand(MAI->getPointerOperand());
- for (MemAccessInst::op_iterator I = MAI->idx_begin(), E = MAI->idx_end();
- I != E; ++I)
+ MemAccessInst::op_iterator I = MAI->idx_begin(), E = MAI->idx_end();
+ if (I == E) return;
+
+ // Print out the -> operator if possible...
+ Constant *CI = dyn_cast<Constant>(*I);
+ if (CI && CI->isNullValue() && I+1 != E &&
+ (*(I+1))->getType() == Type::UByteTy) {
+ ++I;
+ Out << "->field" << cast<ConstantUInt>(*I)->getValue();
+ ++I;
+ }
+
+ for (; I != E; ++I)
if ((*I)->getType() == Type::UIntTy) {
Out << "[";
CW.writeOperand(*I);