Support hardware divide instruction
Bug: 11299025
Uses sdiv for division and a combo of sdiv, mul and sub for modulus.
Only does this on processors that are capable of the sdiv instruction, as determined
by the build system.
Also provides a command line arg --instruction-set-features= to allow cross compilation.
Makefile adds the --instruction-set-features= arg to build-time dex2oat runs and defaults
it to something obtained from the target architecture.
Provides a GetInstructionSetFeatures() function on CompilerDriver that can be
queried for various features. The only feature supported right now is hasDivideInstruction().
Also adds a few more instructions to the ARM disassembler
b/11535253 is an addition to this CL to be done later.
Change-Id: Ia8aaf801fd94bc71e476902749cf20f74eba9f68
diff --git a/oatdump/oatdump.cc b/oatdump/oatdump.cc
index 3a32ff1..b9716d5 100644
--- a/oatdump/oatdump.cc
+++ b/oatdump/oatdump.cc
@@ -118,6 +118,9 @@
os << "INSTRUCTION SET:\n";
os << oat_header.GetInstructionSet() << "\n\n";
+ os << "INSTRUCTION SET FEATURES:\n";
+ os << oat_header.GetInstructionSetFeatures().GetFeatureString() << "\n\n";
+
os << "DEX FILE COUNT:\n";
os << oat_header.GetDexFileCount() << "\n\n";