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LLVM backend for 6502
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d0446b08c4
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Bill Wendling d0446b08c4 The DWARF to compact encoding converter assumes that the DW_CFA_def_cfa_offset 
comes after the DW_CFA_def_cfa_register, because the CFA is really ESP from the
start of the function and only gets an offset when the "subl $xxx,%esp"
instruction happens, not the other way around.

And reapply r72898:

The DWARF unwind info was incorrect. While compiling with
`-fomit-frame-pointer', we would lack the DW_CFA_advance_loc information for a
lot of function, and then they would be `0'. The linker (at least on Darwin)
needs to encode the stack size. In some cases, the stack size is too large to
directly encode. So the linker checks to see if there is a "subl $xxx,%esp"
instruction at the point where the `DW_CFA_def_cfa_offset' says the pc was. If
so, the compact encoding records the offset in the function to where the stack
size is embedded. But because the `DW_CFA_advance_loc' instructions are missing,
it looks before the function and dies.

So, instead of emitting the EH debug label before the stack adjustment
operations, emit it afterwards, right before the frame move stuff.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73465 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-16 04:06:15 +00:00
autoconf Add a flag to permit disabling libffi. 2009-06-06 06:24:44 +00:00
bindings Give embedded metadata its own type instead of relying on EmptyStructTy. 2009-05-30 05:06:04 +00:00
cmake CMake: New variable LLVM_LIBDIR_SUFFIX. 2009-06-12 02:49:53 +00:00
docs Add initial stab at documenting the use of LLVM with threaded clients. 2009-06-16 01:17:16 +00:00
examples silence a warning. 2009-04-15 00:16:05 +00:00
include Add comments to ConstantInt::get and ConstantFP::get to more fully 2009-06-16 01:02:32 +00:00
lib The DWARF to compact encoding converter assumes that the DW_CFA_def_cfa_offset 2009-06-16 04:06:15 +00:00
projects Revert r67655 and r67656, as they are breaking the build. I'm 2009-03-25 00:52:11 +00:00
runtime Drop toy GC runtime. 2009-03-02 03:46:48 +00:00
test Use MainCU if it is available. 2009-06-16 02:09:30 +00:00
tools Documentation update. 2009-06-16 00:13:52 +00:00
unittests Reversed order of args in EXPECT_EQ() macros to be in the correct order: 2009-06-09 21:48:57 +00:00
utils Add output of the SFINAE bit for Clang's diagnostics 2009-06-14 07:24:49 +00:00
website Prepare for "core" website. 2007-08-03 05:43:35 +00:00
win32 Add a new codegen pass that normalizes dwarf exception handling 2009-05-22 20:36:31 +00:00
Xcode Remove Stacker.html from Xcode project. 2008-10-14 23:23:59 +00:00
build-for-llvm-top.sh Patch to build llvm with srcdir != objdir from 2009-01-23 08:42:38 +00:00
CMakeLists.txt CMake: New variable LLVM_LIBDIR_SUFFIX. 2009-06-12 02:49:53 +00:00
configure Regenerate. 2009-06-06 06:25:09 +00:00
CREDITS.TXT Add myself, test commit 2009-06-14 02:03:17 +00:00
LICENSE.TXT Now that we have atomics support properly detected by configure, 2009-05-19 00:08:29 +00:00
llvm.spec.in
Makefile Change 'make install' to install tblgen, for better support of out-of-tree targets, 2009-05-08 17:32:47 +00:00
Makefile.common Removed trailing whitespace from Makefiles. 2009-01-09 16:44:42 +00:00
Makefile.config.in Add a --enable-profiling option to configure to build Debug+Profile and 2009-04-17 14:49:22 +00:00
Makefile.rules On platforms like Sparc64 you need to pass -r to 2009-06-05 15:05:19 +00:00
ModuleInfo.txt Patch to build llvm with srcdir != objdir from 2009-01-23 08:42:38 +00:00
README.txt README.txt: test commit w/blank line appended 2009-03-23 21:00:45 +00:00

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