zero-extended to 64 bits.  This information is currently provided to
the back end by setting "signext" or "zeroext" attributes.  However,
this is done only for integer types *smaller* than i32, not for i32
itself.  This causes clang to generate code violating the ABI, which
results in a failure of the tramp3d-v4 test case (due to calling a
system library routine without ABI-required extension).

This patch implements custom versions of classifyArgumentType and
classifyReturnType for PPC64_SVR4_ABIInfo, which are the same as the
default versions except that they also classify "int" and "unsigned int"
as types needing extending.  This fixed tramp3d-v4 on PowerPC64.

llvm-svn: 167393

well as couple of tests which were not being excercised because of TYPOs.

llvm-svn: 167374

llvm-svn: 167336

mrr mode.

llvm-svn: 167331

llvm-svn: 167308

llvm-svn: 167266

llvm-svn: 167261

llvm-svn: 167260

separate functions, since they share essentially no code.

llvm-svn: 167259

g++'s -ftrapv, failed to call the -ftrapv overflow handler, and are still
available under -fcatch-undefined-behavior.

llvm-svn: 167258

llvm-svn: 167249

generation for captured block variables in arc mode. This includes
inlined version of the meta-data when it can be done. It also includes
severat tests. This is wip. // rdar://12184410.

llvm-svn: 167241

We want the diagnostic, and if the load is optimized away, we still want to
trap it. Stop checking non-default address spaces; that doesn't work in
general.

llvm-svn: 167219

According to the spec, we can backfill VFP registers that were skipped due
to alignment constraints.

llvm-svn: 167159

If HA can only partially fit into VFP registers, we add padding to make sure
HA will be on stack and later VFP CPRCs will be on stack as well.

llvm-svn: 167058

layout meta-data.  It is currently off (so no tests). This is wip.

llvm-svn: 167047

llvm-svn: 167021

llvm-svn: 166992

llvm-svn: 166957

llvm-svn: 166946

llvm-svn: 166924

It is currently off (so no tests). This is wip.

llvm-svn: 166892

llvm-svn: 166853

llvm-svn: 166849

llvm-svn: 166848

can be refactored and used in Sema.

llvm-svn: 166847

llvm-svn: 166832

llvm-svn: 166825

llvm-svn: 166823

flags for __block variable meta-data.

llvm-svn: 166811

extern "C", its method definitions must be IRGen'ed
before meta-data for class is generated. Otherwise,
IRGen crashes (to say the least).
// rdar://12581683 

llvm-svn: 166809

varargs parameter passing.

A strict reading of the ABI indicates that any argument with alignment greater
than 8 may require skipping doublewords in the parameter save area to align
the argument, and hence require skipping GPRs.  In practice, this is not done
by GCC.  The alignment restriction is used for internal alignment of a
structure, but a structure with 16-byte alignment, for example, is not
itself 16-byte aligned in the parameter save area.  Although this is messy,
it has become the de facto standard used in building existing libraries.

My initial varargs support followed the ABI language, but not the de facto
standard.  Running the GCC compatibility test suite exposed this issue, and
indeed showed that LLVM didn't pass parameters self-consistently with my
original logic.  Removing the additional alignment logic allows the affected
tests to now pass.

I modified the ppc64-varargs-struct.c test case to remove the existing test
for generation of alignment code, which is no longer appropriate.

Built and tested on powerpc64-unknown-linux-gnu with no new regressions.

llvm-svn: 166805

variable descriptor captured by a block.

llvm-svn: 166746

llvm-svn: 166744

what it is meant for.

llvm-svn: 166734

layout meta-data work. wip.

llvm-svn: 166717

llvm-svn: 166703

llvm-svn: 166684

Modify the targets to set appropriate calling convention defaults and C variables when using a gnueabihf or aapcs-vfp target.

Tested by me and Wei-Ren Chen.

llvm-svn: 166679

Initialize debug info for special cases of functions that lack declarations and are generated by Clang (global initializers/destructors, thunks) . Fixes PR13942.

llvm-svn: 166676