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LLVM backend for 6502
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44be1a8d66
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Evan Cheng 44be1a8d66 Enable machine sinking critical edge splitting. e.g. 
define double @foo(double %x, double %y, i1 %c) nounwind {
  %a = fdiv double %x, 3.2
  %z = select i1 %c, double %a, double %y
  ret double %z
}

Was:
_foo:
        divsd   LCPI0_0(%rip), %xmm0
        testb   $1, %dil
        jne     LBB0_2
        movaps  %xmm1, %xmm0
LBB0_2:
        ret

Now:
_foo:
        testb   $1, %dil
        je      LBB0_2
        divsd   LCPI0_0(%rip), %xmm0
        ret
LBB0_2:
        movaps  %xmm1, %xmm0
        ret

This avoids the divsd when early exit is taken.
rdar://8454886


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114372 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-20 22:52:00 +00:00
autoconf Attempt to support platforms which don't have fenv.h. 2010-09-17 20:06:27 +00:00
bindings Remove the Ada bindings which are unmaintained and unused. The project which 2010-09-15 08:17:10 +00:00
cmake cmake: test for the presence of fenv.h 2010-09-17 20:30:48 +00:00
docs docs: Tweak wording. 2010-09-18 08:32:32 +00:00
examples Removed TracingBrainF from examples Makefile. 2010-09-15 14:55:32 +00:00
include Relax this check to silently swallow FE_INEXACT, following directions 2010-09-20 22:32:25 +00:00
lib Enable machine sinking critical edge splitting. e.g. 2010-09-20 22:52:00 +00:00
projects projects: Don't try to build libcxx if one happens to have it checked out into 2010-09-09 15:49:32 +00:00
runtime Rename 'libprofile/exported_symbols.lst' to 'libprofile/libprofile.exports'. 2010-09-03 15:42:45 +00:00
test Enable machine sinking critical edge splitting. e.g. 2010-09-20 22:52:00 +00:00
tools llvm-mc: Teach -as-lex to print more token kinds. 2010-09-16 00:42:35 +00:00
unittests Add better support for environment portion of triple. Original patch by 2010-09-16 08:25:48 +00:00
utils Using regexp-opt for keyword regex declarations makes the word lists more 2010-09-19 03:44:22 +00:00
website
build-for-llvm-top.sh
CMakeLists.txt Revert "CMake: Get rid of LLVMLibDeps.cmake and export the libraries normally." 2010-09-13 23:59:48 +00:00
configure Regenerate. 2010-09-17 20:08:35 +00:00
CREDITS.TXT
LICENSE.TXT
llvm.spec.in
Makefile
Makefile.common
Makefile.config.in
Makefile.rules build: Add support for a TOOL_ORDER_FILE variable so commands can build with an 2010-09-16 00:42:32 +00:00
ModuleInfo.txt
README.txt

README.txt 

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