Revert commit 56835 since it breaks the build.

"If a re-materializable instruction has a register
operand, the spiller will change the register operand's
spill weight to HUGE_VAL to avoid it being spilled.
However, if the operand is already in the queue ready
to be spilled, avoid re-materializing it".


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56837 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 1 insertions, 2 deletions

diff --git a/lib/CodeGen/SimpleRegisterCoalescing.cpp b/lib/CodeGen/SimpleRegisterCoalescing.cpp
index 86065f069f..bdc37b16b6 100644
--- a/lib/CodeGen/SimpleRegisterCoalescing.cpp
+++ b/lib/CodeGen/SimpleRegisterCoalescing.cpp
@@ -2361,8 +2361,7 @@ bool SimpleRegisterCoalescing::runOnMachineFunction(MachineFunction &fn) {
         LI.weight = HUGE_VALF;
       else {
         bool isLoad = false;
-        SmallVector<LiveInterval*, 4> SpillIs;
-        if (li_->isReMaterializable(LI, SpillIs, isLoad)) {
+        if (li_->isReMaterializable(LI, isLoad)) {
           // If all of the definitions of the interval are re-materializable,
           // it is a preferred candidate for spilling. If non of the defs are
           // loads, then it's potentially very cheap to re-materialize.