[llvm] r215032 - Add the -mcpu= option to llvm-objdump for use with the disassemblers.

[Kevin Enderby]

Author: enderby
Date: Wed Aug  6 18:24:41 2014
New Revision: 215032

URL: http://llvm.org/viewvc/llvm-project?rev=215032&view=rev
Log:
Add the -mcpu= option to llvm-objdump for use with the disassemblers.
Also make the disassembler created with the Mach-O parser (the -m option)
pick up the Target specific attributes specified with -mattr option.

Added:
    llvm/trunk/test/tools/llvm-objdump/macho-mattr-arm.test
    llvm/trunk/test/tools/llvm-objdump/macho-mcpu-arm.test
Modified:
    llvm/trunk/tools/llvm-objdump/MachODump.cpp
    llvm/trunk/tools/llvm-objdump/llvm-objdump.cpp
    llvm/trunk/tools/llvm-objdump/llvm-objdump.h

Added: llvm/trunk/test/tools/llvm-objdump/macho-mattr-arm.test
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/tools/llvm-objdump/macho-mattr-arm.test?rev=215032&view=auto
==============================================================================
--- llvm/trunk/test/tools/llvm-objdump/macho-mattr-arm.test (added)
+++ llvm/trunk/test/tools/llvm-objdump/macho-mattr-arm.test Wed Aug  6 18:24:41 2014
@@ -0,0 +1,5 @@
+@ RUN: llvm-mc < %s -triple armv8-apple-darwin10 -mattr=+fp-armv8 -filetype=obj -o - | llvm-objdump -d -m -mattr=+fp-armv8 - | FileCheck %s
+
+vcvtt.f64.f16 d3, s1
+
+@ CHECK: e0 3b b2 ee vcvtt.f64.f16 d3, s1

Added: llvm/trunk/test/tools/llvm-objdump/macho-mcpu-arm.test
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/tools/llvm-objdump/macho-mcpu-arm.test?rev=215032&view=auto
==============================================================================
--- llvm/trunk/test/tools/llvm-objdump/macho-mcpu-arm.test (added)
+++ llvm/trunk/test/tools/llvm-objdump/macho-mcpu-arm.test Wed Aug  6 18:24:41 2014
@@ -0,0 +1,10 @@
+@ RUN: llvm-mc < %s -triple thumbv7-apple-darwin -mcpu=cortex-a7 -filetype=obj | llvm-objdump -triple thumbv7-apple-darwin10 -m -d -mcpu=cortex-a7 - | FileCheck %s
+
+.thumb
+.thumb_func _t
+_t:
+sdiv r1, r2, r3
+udiv r1, r2, r3
+
+@ CHECK: 92 fb f3 f1 sdiv r1, r2, r3
+@ CHECK: b2 fb f3 f1 udiv r1, r2, r3

Modified: llvm/trunk/tools/llvm-objdump/MachODump.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/tools/llvm-objdump/MachODump.cpp?rev=215032&r1=215031&r2=215032&view=diff
==============================================================================
--- llvm/trunk/tools/llvm-objdump/MachODump.cpp (original)
+++ llvm/trunk/tools/llvm-objdump/MachODump.cpp Wed Aug  6 18:24:41 2014
@@ -220,13 +220,22 @@ static void DisassembleInputMachO2(Strin
   std::unique_ptr<MCInstrAnalysis> InstrAnalysis(
       TheTarget->createMCInstrAnalysis(InstrInfo.get()));
 
+  // Package up features to be passed to target/subtarget
+  std::string FeaturesStr;
+  if (MAttrs.size()) {
+    SubtargetFeatures Features;
+    for (unsigned i = 0; i != MAttrs.size(); ++i)
+      Features.AddFeature(MAttrs[i]);
+    FeaturesStr = Features.getString();
+  }
+
   // Set up disassembler.
   std::unique_ptr<const MCRegisterInfo> MRI(
       TheTarget->createMCRegInfo(TripleName));
   std::unique_ptr<const MCAsmInfo> AsmInfo(
       TheTarget->createMCAsmInfo(*MRI, TripleName));
   std::unique_ptr<const MCSubtargetInfo> STI(
-      TheTarget->createMCSubtargetInfo(TripleName, "", ""));
+      TheTarget->createMCSubtargetInfo(TripleName, MCPU, FeaturesStr));
   MCContext Ctx(AsmInfo.get(), MRI.get(), nullptr);
   std::unique_ptr<const MCDisassembler> DisAsm(
     TheTarget->createMCDisassembler(*STI, Ctx));

Modified: llvm/trunk/tools/llvm-objdump/llvm-objdump.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/tools/llvm-objdump/llvm-objdump.cpp?rev=215032&r1=215031&r2=215032&view=diff
==============================================================================
--- llvm/trunk/tools/llvm-objdump/llvm-objdump.cpp (original)
+++ llvm/trunk/tools/llvm-objdump/llvm-objdump.cpp Wed Aug  6 18:24:41 2014
@@ -94,6 +94,12 @@ llvm::TripleName("triple", cl::desc("Tar
                                     "see -version for available targets"));
 
 cl::opt<std::string>
+llvm::MCPU("mcpu",
+     cl::desc("Target a specific cpu type (-mcpu=help for details)"),
+     cl::value_desc("cpu-name"),
+     cl::init(""));
+
+cl::opt<std::string>
 llvm::ArchName("arch", cl::desc("Target arch to disassemble for, "
                                 "see -version for available targets"));
 
@@ -107,8 +113,8 @@ static cl::alias
 SectionHeadersShorter("h", cl::desc("Alias for --section-headers"),
                       cl::aliasopt(SectionHeaders));
 
-static cl::list<std::string>
-MAttrs("mattr",
+cl::list<std::string>
+llvm::MAttrs("mattr",
   cl::CommaSeparated,
   cl::desc("Target specific attributes"),
   cl::value_desc("a1,+a2,-a3,..."));
@@ -303,7 +309,7 @@ static void DisassembleObject(const Obje
   }
 
   std::unique_ptr<const MCSubtargetInfo> STI(
-      TheTarget->createMCSubtargetInfo(TripleName, "", FeaturesStr));
+      TheTarget->createMCSubtargetInfo(TripleName, MCPU, FeaturesStr));
   if (!STI) {
     errs() << "error: no subtarget info for target " << TripleName << "\n";
     return;

Modified: llvm/trunk/tools/llvm-objdump/llvm-objdump.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/tools/llvm-objdump/llvm-objdump.h?rev=215032&r1=215031&r2=215032&view=diff
==============================================================================
--- llvm/trunk/tools/llvm-objdump/llvm-objdump.h (original)
+++ llvm/trunk/tools/llvm-objdump/llvm-objdump.h Wed Aug  6 18:24:41 2014
@@ -25,6 +25,8 @@ namespace object {
 
 extern cl::opt<std::string> TripleName;
 extern cl::opt<std::string> ArchName;
+extern cl::opt<std::string> MCPU;
+extern cl::list<std::string> MAttrs;
 
 // Various helper functions.
 bool error(std::error_code ec);