Use std::numeric_limits<float>::infinity() instead of

std::numeric_limits<float>::max() for weighting preallocated
intervals.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11427 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/LiveIntervalAnalysis.cpp b/lib/CodeGen/LiveIntervalAnalysis.cpp
index 22cdb4f8842886a4611ae5e3a1cb9b0bd64f9f4c..f965c5feecc489de2e498978e0db36a2c8845ff5 100644 (file)
--- a/lib/CodeGen/LiveIntervalAnalysis.cpp
+++ b/lib/CodeGen/LiveIntervalAnalysis.cpp
@@ -436,7 +436,7 @@ bool LiveIntervals::overlapsAliases(const Interval& lhs,
 LiveIntervals::Interval::Interval(unsigned r)
     : reg(r),
       weight((MRegisterInfo::isPhysicalRegister(r) ?
-              std::numeric_limits<float>::max() : 0.0F))
+              std::numeric_limits<float>::infinity() : 0.0F))
 {
 
 }

diff --git a/lib/CodeGen/RegAllocLinearScan.cpp b/lib/CodeGen/RegAllocLinearScan.cpp
index d26ee8f8c5747f3700c320d1daf6a7a04e76f504..0369a885044cd0e3f588f54cc6069223230ba3c6 100644 (file)
--- a/lib/CodeGen/RegAllocLinearScan.cpp
+++ b/lib/CodeGen/RegAllocLinearScan.cpp
@@ -641,7 +641,7 @@ void RA::assignRegOrStackSlotAtInterval(IntervalPtrs::value_type cur)
 
     DEBUG(std::cerr << "\t\tassigning stack slot at interval "<< *cur << ":\n");
 
-    float minWeight = std::numeric_limits<float>::max();
+    float minWeight = std::numeric_limits<float>::infinity();
     unsigned minReg = 0;
     const TargetRegisterClass* rc = mf_->getSSARegMap()->getRegClass(cur->reg);
     for (TargetRegisterClass::iterator i = rc->allocation_order_begin(*mf_);