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LLVM backend for 6502
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Bill Schmidt 11729224bf [PowerPC] Disable fast-isel for existing -O0 tests for PowerPC. 
This is a preliminary patch for fast instruction selection on
PowerPC.  Code generation can differ between DAG isel and fast isel.
Existing tests that specify -O0 were written to expect DAG isel.  Make
this explicit by adding -fast-isel=false to the tests.

In some cases specifying -fast-isel=false produces different code even
when there isn't a fast instruction selector specified.  This is
because TM.Options.EnableFastISel = 1 at -O0 whether or not a FastISel
object exists.  Thus disabling fast isel can actually produce less
conservative code.  Because of this, some of the expected code
generation in the -O0 tests needs to be adjusted.

In particular, handling of function arguments is less conservative
with -fast-isel=false (see isOnlyUsedInEntryBlock() in
SelectionDAGBuilder.cpp).  This results in fewer stack accesses and,
in some cases, reduced stack size as uselessly loaded values are no
longer stored back to spill locations in the stack.

No functional change with this patch; test case adjustments only.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183939 91177308-0d34-0410-b5e6-96231b3b80d8
2013-06-13 20:23:34 +00:00
autoconf Don't define LTDL_SHLIBPATH_VAR. 2013-06-11 19:04:13 +00:00
bindings
cmake Don't define LTDL_SHLIBPATH_VAR. 2013-06-11 19:04:13 +00:00
docs Update Release Process doc 2013-06-12 11:35:33 +00:00
examples
include Add a version of sys::ExecuteAndWait that takes StringRefs. 2013-06-13 20:06:28 +00:00
lib R600: Don't try to fix reg class when copying IMPLICIT_DEF to a register 2013-06-13 20:14:00 +00:00
projects Don't define LTDL_SHLIBPATH_VAR. 2013-06-11 19:04:13 +00:00
runtime Remove "-Wl,-seg1addr -Wl,0xE0000000" from link options. 2013-06-04 15:26:37 +00:00
test [PowerPC] Disable fast-isel for existing -O0 tests for PowerPC. 2013-06-13 20:23:34 +00:00
tools Have sys::FindProgramByName return a std::string. 2013-06-13 19:25:37 +00:00
unittests Remove the program class. 2013-06-12 20:58:35 +00:00
utils Have sys::FindProgramByName return a std::string. 2013-06-13 19:25:37 +00:00
.arcconfig
.gitignore
CMakeLists.txt Allow duplicates in LLVM_TARGETS_TO_BUILD and LLVM_EXPERIMENTAL_TARGETS_TO_BUILD. 2013-05-22 02:45:28 +00:00
CODE_OWNERS.TXT
configure Don't define LTDL_SHLIBPATH_VAR. 2013-06-11 19:04:13 +00:00
CREDITS.TXT
LICENSE.TXT Be more specific and capitalize filenames. 2013-05-21 21:22:34 +00:00
llvm.spec.in
LLVMBuild.txt
Makefile
Makefile.common
Makefile.config.in
Makefile.rules Remove redundant rpath. 2013-05-23 02:53:22 +00:00
README.txt

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