LoopVectorizer:
1. Add code to estimate register pressure.
2. Add code to select the unroll factor based on register pressure.
3. Add bits to TargetTransformInfo to provide the number of registers.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171469 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/TargetTransformImpl.cpp b/lib/Target/TargetTransformImpl.cpp
index f8c5889..7d663f5 100644
--- a/lib/Target/TargetTransformImpl.cpp
+++ b/lib/Target/TargetTransformImpl.cpp
@@ -171,6 +171,10 @@
return Cost;
}
+unsigned VectorTargetTransformImpl::getNumberOfRegisters(bool Vector) const {
+ return 8;
+}
+
unsigned VectorTargetTransformImpl::getArithmeticInstrCost(unsigned Opcode,
Type *Ty) const {
// Check if any of the operands are vector operands.