Handle 'r' inline asm constraint
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79648 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/SystemZ/SystemZISelLowering.cpp b/lib/Target/SystemZ/SystemZISelLowering.cpp
index 279e22b..2022ec0 100644
--- a/lib/Target/SystemZ/SystemZISelLowering.cpp
+++ b/lib/Target/SystemZ/SystemZISelLowering.cpp
@@ -165,6 +165,46 @@
}
//===----------------------------------------------------------------------===//
+// SystemZ Inline Assembly Support
+//===----------------------------------------------------------------------===//
+
+/// getConstraintType - Given a constraint letter, return the type of
+/// constraint it is for this target.
+TargetLowering::ConstraintType
+SystemZTargetLowering::getConstraintType(const std::string &Constraint) const {
+ if (Constraint.size() == 1) {
+ switch (Constraint[0]) {
+ case 'r':
+ return C_RegisterClass;
+ default:
+ break;
+ }
+ }
+ return TargetLowering::getConstraintType(Constraint);
+}
+
+std::pair<unsigned, const TargetRegisterClass*>
+SystemZTargetLowering::
+getRegForInlineAsmConstraint(const std::string &Constraint,
+ EVT VT) const {
+ if (Constraint.size() == 1) {
+ // GCC Constraint Letters
+ switch (Constraint[0]) {
+ default: break;
+ case 'r': // GENERAL_REGS
+ if (VT == MVT::i32)
+ return std::make_pair(0U, SystemZ::GR32RegisterClass);
+ else if (VT == MVT::i128)
+ return std::make_pair(0U, SystemZ::GR128RegisterClass);
+
+ return std::make_pair(0U, SystemZ::GR64RegisterClass);
+ }
+ }
+
+ return TargetLowering::getRegForInlineAsmConstraint(Constraint, VT);
+}
+
+//===----------------------------------------------------------------------===//
// Calling Convention Implementation
//===----------------------------------------------------------------------===//
diff --git a/lib/Target/SystemZ/SystemZISelLowering.h b/lib/Target/SystemZ/SystemZISelLowering.h
index 0cf0783..0c1d825 100644
--- a/lib/Target/SystemZ/SystemZISelLowering.h
+++ b/lib/Target/SystemZ/SystemZISelLowering.h
@@ -69,6 +69,11 @@
return 1;
}
+ std::pair<unsigned, const TargetRegisterClass*>
+ getRegForInlineAsmConstraint(const std::string &Constraint, EVT VT) const;
+ TargetLowering::ConstraintType
+ getConstraintType(const std::string &Constraint) const;
+
SDValue LowerBR_CC(SDValue Op, SelectionDAG &DAG);
SDValue LowerSELECT_CC(SDValue Op, SelectionDAG &DAG);
SDValue LowerGlobalAddress(SDValue Op, SelectionDAG &DAG);