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09a31f3154
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Hans Wennborg 09a31f3154 Allow switch-to-lookup table for tables with holes by adding bitmask check 
This allows us to generate table lookups for code such as:

  unsigned test(unsigned x) {
    switch (x) {
      case 100: return 0;
      case 101: return 1;
      case 103: return 2;
      case 105: return 3;
      case 107: return 4;
      case 109: return 5;
      case 110: return 6;
      default: return f(x);
    }
  }

Since cases 102, 104, etc. are not constants, the lookup table has holes
in those positions. We therefore guard the table lookup with a bitmask check.

Patch by Jasper Neumann!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203694 91177308-0d34-0410-b5e6-96231b3b80d8
2014-03-12 18:35:40 +00:00
autoconf Add a --enable-clang-plugin-support option to configure. 2014-03-10 16:58:35 +00:00
bindings [python-bindings] Remove some cruft that snuck in. 2014-02-23 04:43:26 +00:00
cmake [CMake] add_llvm_target(): No need to include TABLEGEN_OUTPUT in source list. 2014-03-04 17:05:28 +00:00
docs IR: add a second ordering operand to cmpxhg for failure 2014-03-11 10:48:52 +00:00
examples Fix warnings about an variable only used in asserts. 2014-03-06 06:35:46 +00:00
include Revert r203488 and r203520. 2014-03-12 18:09:37 +00:00
lib Allow switch-to-lookup table for tables with holes by adding bitmask check 2014-03-12 18:35:40 +00:00
projects "Mac OS/X" -> "Mac OS X" spelling fixes for llvm. 2014-03-07 18:08:54 +00:00
test Allow switch-to-lookup table for tables with holes by adding bitmask check 2014-03-12 18:35:40 +00:00
tools Move duplicated code into a helper function (exposed through overload). 2014-03-12 16:12:36 +00:00
unittests unittests: Fix -Werror build 2014-03-12 17:00:52 +00:00
utils [lit] Fix non-function style print statement. 2014-03-11 14:05:49 +00:00
.arcconfig
.clang-format Test commit. 2014-03-02 13:08:46 +00:00
.gitignore Added .DS_Store entry in .gitignore for ignoring .DS_Store files in the source 2014-01-25 15:15:16 +00:00
CMakeLists.txt move WITH_POLLY option before add_subdirectory(tools) 2014-03-11 22:42:07 +00:00
CODE_OWNERS.TXT Add myself as owner for libc++ 2014-02-18 14:03:17 +00:00
configure Add a --enable-clang-plugin-support option to configure. 2014-03-10 16:58:35 +00:00
CREDITS.TXT Fix documentation typos 2013-12-20 00:33:39 +00:00
LICENSE.TXT Update the copyright credits -- Happy new year 2014! 2014-01-01 08:27:31 +00:00
llvm.spec.in
LLVMBuild.txt Remove the very substantial, largely unmaintained legacy PGO 2013-10-02 15:42:23 +00:00
Makefile Provide CMake package modules in install tree 2014-02-09 16:37:02 +00:00
Makefile.common Makefile.common: Update a description, s/Source/SOURCES/ , according to MakefileGuide.html#control-variables . 2012-12-07 01:43:23 +00:00
Makefile.config.in Add a --enable-clang-plugin-support option to configure. 2014-03-10 16:58:35 +00:00
Makefile.rules "Mac OS/X" -> "Mac OS X" spelling fixes for llvm. 2014-03-07 18:08:54 +00:00
README.txt Revert "Test commit to check e-mail address. Please discard this." 2013-10-04 10:59:13 +00:00

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