[llvm-dev] MSP430 code generation from LLVM IR

[Luís Marques via llvm-dev]

Hello,

While trying to find out why the LDC compiler refuses to generate object
code for MSP430 targets (but generates MSP430 assembly or LLVM IR/bitcode),
I came across the following apparent inconsistency.

This works:

$ clang --target=msp430 -c test.c

This doesn't work:

$ clang --target=msp430 -S -emit-llvm test.c
$ llc -filetype=obj test.ll
/opt/msp430/bin/llc: target does not support generation of this file type!

That sequence works fine for x86.

Could someone help shed some light into this discrepancy? (Maybe it will
also help me figure out why LDC refuses to directly generate MSP430 object
files [1]).

Thanks,
Luís

[1] $ ldc2 -mtriple=msp430 -c test.d
no support for asm output
UNREACHABLE executed at ../driver/toobj.cpp:130!
0  ldc2                     0x0000000107e19c9c
llvm::sys::PrintStackTrace(llvm::raw_ostream&) + 60
1  ldc2                     0x0000000107e1a1e9
PrintStackTraceSignalHandler(void*) + 25
2  ldc2                     0x0000000107e16139
llvm::sys::RunSignalHandlers() + 425
3  ldc2                     0x0000000107e1a642 SignalHandler(int) + 354
4  libsystem_platform.dylib 0x00007fffa0ad5b3a _sigtramp + 26
5  libsystem_platform.dylib 0x0000000000000003 _sigtramp + 1599251683
6  libsystem_c.dylib        0x00007fffa095a420 abort + 129
7  ldc2                     0x0000000107d246c0 LLVMInstallFatalErrorHandler
+ 0
8  ldc2                     0x0000000105efd2a7
codegenModule(llvm::TargetMachine&, llvm::Module&, llvm::raw_fd_ostream&,
llvm::TargetMachine::CodeGenFileType) + 391
9  ldc2                     0x0000000105f00ab9 (anonymous
namespace)::writeObjectFile(llvm::Module*, char const*) + 377
10 ldc2                     0x0000000105efcc05 writeModule(llvm::Module*,
char const*) + 10517
11 ldc2                     0x0000000105ee6162
ldc::CodeGenerator::writeAndFreeLLModule(char const*) + 1602
12 ldc2                     0x0000000105ee6a82
ldc::CodeGenerator::finishLLModule(Module*) + 130
13 ldc2                     0x0000000105ee880c
ldc::CodeGenerator::emit(Module*) + 1420
14 ldc2                     0x0000000105f36e4e
codegenModules(Array<Module*>&) + 574
15 ldc2                     0x0000000105bf2a00 mars_mainBody(Array<char
const*>&, Array<char const*>&) + 5120
Abort trap: 6
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20170706/3362f149/attachment-0001.html>