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Hal Finkel 0837bf4c51 [llvm-opt-report] Distinguish inlined contexts when optimizations differ
How code is optimized sometimes, perhaps often, depends on the context into
which it was inlined. This change allows llvm-opt-report to track the
differences between the optimizations performed, or not, in different contexts,
and when these differ, display those differences.

For example, this code:

  $ cat /tmp/q.cpp
  void bar();
  void foo(int n) {
    for (int i = 0; i < n; ++i)
      bar();
  }

  void quack() {
    foo(4);
  }

  void quack2() {
    foo(4);
  }

will now produce this report:

  < /home/hfinkel/src/llvm/test/tools/llvm-opt-report/Inputs/q.cpp
   2         | void bar();
   3         | void foo(int n) {
   [[
    > foo(int):
   4         |   for (int i = 0; i < n; ++i)
    > quack(), quack2():
   4  U4     |   for (int i = 0; i < n; ++i)
   ]]
   5         |     bar();
   6         | }
   7         |
   8         | void quack() {
   9 I       |   foo(4);
  10         | }
  11         |
  12         | void quack2() {
  13 I       |   foo(4);
  14         | }
  15         |

Note that the tool has demangled the function names, and grouped the reports
associated with line 4. This shows that the loop on line 4 was unrolled by a
factor of 4 when inlined into the functions quack() and quack2(), but not in
the function foo(int) itself.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@283402 91177308-0d34-0410-b5e6-96231b3b80d8
2016-10-05 22:25:33 +00:00
bindings cmake: Install the OCaml libraries into a more correct path 2016-09-30 18:34:23 +00:00
cmake [cmake] Make LIT_COMMAND configurable and improve fallback support 2016-10-04 20:25:37 +00:00
docs [libfuzzer] sancov documentation update 2016-09-30 21:07:04 +00:00
examples [Kaleidoscope] Make Chapter 2 use llvm::make_unique, rather than a helper. 2016-09-19 23:00:27 +00:00
include Modify df_iterator to support post-order actions 2016-10-05 21:36:16 +00:00
lib Verifier: Reject any unknown named MD nodes in the llvm.dbg namespace. 2016-10-05 22:15:37 +00:00
projects Enable in-tree builds of parallel-libs. 2016-09-09 21:34:12 +00:00
resources
runtimes [CMake] Fixing lit for runtimes directory 2016-09-15 06:14:13 +00:00
test [llvm-opt-report] Distinguish inlined contexts when optimizations differ 2016-10-05 22:25:33 +00:00
tools [llvm-opt-report] Distinguish inlined contexts when optimizations differ 2016-10-05 22:25:33 +00:00
unittests Remove extra semicolon 2016-10-05 21:46:56 +00:00
utils FastISel: Remove unused/un-overridden entry points. NFCI. 2016-10-05 19:25:20 +00:00
.arcconfig project_id is from another era in phabricator land and does not provide any value. 2016-09-27 15:47:29 +00:00
.clang-format
.clang-tidy .clang-tidy: correct style name is 'camelBack' not 'lowerCase'. 2016-09-13 19:04:26 +00:00
.gitignore gitignore: ignore VS Code editor files 2016-09-02 22:54:26 +00:00
CMakeLists.txt [CMake] Force CMP0057 to NEW 2016-09-27 23:18:32 +00:00
CODE_OWNERS.TXT Take ownership of libLTO as discussed on llvm-dev. 2016-09-15 17:42:39 +00:00
configure
CREDITS.TXT Shamelessly add myself to CREDITS.TXT 2016-08-04 16:28:22 +00:00
LICENSE.TXT Remove autoconf references from LICENSE.TXT 2016-08-12 20:11:03 +00:00
llvm.spec.in
LLVMBuild.txt
README.txt Revert rL277454 2016-08-02 13:26:07 +00:00
RELEASE_TESTERS.TXT

Low Level Virtual Machine (LLVM)
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