Re-implement trivial rematerialization. This allows def MIs whose live intervals that are coalesced to be rematerialized.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41060 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 0 insertions, 6 deletions

diff --git a/lib/CodeGen/SimpleRegisterCoalescing.cpp b/lib/CodeGen/SimpleRegisterCoalescing.cpp
index e71b9d4c0f..fef2fde32a 100644
--- a/lib/CodeGen/SimpleRegisterCoalescing.cpp
+++ b/lib/CodeGen/SimpleRegisterCoalescing.cpp
@@ -1123,12 +1123,6 @@ bool SimpleRegisterCoalescing::runOnMachineFunction(MachineFunction &fn) {
               continue;
             LiveInterval &RegInt = li_->getInterval(reg);
             float w = (mop.isUse()+mop.isDef()) * powf(10.0F, (float)loopDepth);
-            // If the definition instruction is re-materializable, its spill
-            // weight is half of what it would have been normally unless it's
-            // a load from fixed stack slot.
-            int Dummy;
-            if (RegInt.remat && !tii_->isLoadFromStackSlot(RegInt.remat, Dummy))
-              w /= 2;
             RegInt.weight += w;
             UniqueUses.insert(reg);
           }