Reg utility fix
Long ago in a galaxy far away, there was a trace compiler that
handled short code fragments with a small, sparse and variable
set of temp registers. In that situation, doing linear reg
lookups wasn't terrible. In the new world that has a fixed and
packed set of registers, a linear search is unnecessary, foolish
and wasteful. [P.S. perf showed that roughly 25% of all
compilation time was spent doing register manipulation!]
Change-Id: I6f23d9f70367fb4139cc28a27fd9fdf8beffa270
diff --git a/src/compiler/codegen/arm/ArmRallocUtil.cc b/src/compiler/codegen/arm/ArmRallocUtil.cc
index 94852e3..ed8a5b2 100644
--- a/src/compiler/codegen/arm/ArmRallocUtil.cc
+++ b/src/compiler/codegen/arm/ArmRallocUtil.cc
@@ -322,3 +322,9 @@
oatMarkInUse(cUnit, r1);
return res;
}
+
+extern RegisterInfo* oatGetRegInfo(CompilationUnit* cUnit, int reg)
+{
+ return FPREG(reg) ? &cUnit->regPool->FPRegs[reg & FP_REG_MASK]
+ : &cUnit->regPool->coreRegs[reg];
+}