From e99fc909ce61423c2e27314675708a323e897d57 Mon Sep 17 00:00:00 2001 From: Dale Johannesen Date: Tue, 29 Jan 2008 02:21:21 +0000 Subject: Handle 'X' constraint in asm's better. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46485 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/CodeGen/SelectionDAG/TargetLowering.cpp | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'lib/CodeGen/SelectionDAG/TargetLowering.cpp') diff --git a/lib/CodeGen/SelectionDAG/TargetLowering.cpp b/lib/CodeGen/SelectionDAG/TargetLowering.cpp index 3ccfcfa..bd0392e 100644 --- a/lib/CodeGen/SelectionDAG/TargetLowering.cpp +++ b/lib/CodeGen/SelectionDAG/TargetLowering.cpp @@ -1525,6 +1525,19 @@ TargetLowering::getConstraintType(const std::string &Constraint) const { return C_Unknown; } +/// LowerXConstraint - try to replace an X constraint, which matches anything, +/// with another that has more specific requirements based on the type of the +/// corresponding operand. +void TargetLowering::lowerXConstraint(MVT::ValueType ConstraintVT, + std::string& s) const { + if (MVT::isInteger(ConstraintVT)) + s = "r"; + else if (MVT::isFloatingPoint(ConstraintVT)) + s = "f"; // works for many targets + else + s = ""; +} + /// LowerAsmOperandForConstraint - Lower the specified operand into the Ops /// vector. If it is invalid, don't add anything to Ops. void TargetLowering::LowerAsmOperandForConstraint(SDOperand Op, -- cgit v1.1