When doing remat, don't consider uses of non-allocatable physregs. Patch
by Evan.
llvm-svn: 74370
diff --git a/llvm/lib/CodeGen/LiveIntervalAnalysis.cpp b/llvm/lib/CodeGen/LiveIntervalAnalysis.cpp
index d6931df..21bb5dc 100644
--- a/llvm/lib/CodeGen/LiveIntervalAnalysis.cpp
+++ b/llvm/lib/CodeGen/LiveIntervalAnalysis.cpp
@@ -947,6 +947,10 @@
unsigned Reg = MO.getReg();
if (Reg == 0 || Reg == li.reg)
continue;
+
+ if (TargetRegisterInfo::isPhysicalRegister(Reg) &&
+ !allocatableRegs_[Reg])
+ continue;
// FIXME: For now, only remat MI with at most one register operand.
assert(!RegOp &&
"Can't rematerialize instruction with multiple register operand!");