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David Majnemer f25fe64716 [X86] Emit more efficient >= comparisons against 0

We don't do a great job with >= 0 comparisons against zero when the
result is used as an i8.

Given something like:
  void f(long long LL, bool *B) {
    *B = LL >= 0;
  }

We used to generate:
  shrq    $63, %rdi
  xorb    $1, %dil
  movb    %dil, (%rsi)

Now we generate:
  testq   %rdi, %rdi
  setns   (%rsi)

Differential Revision: http://reviews.llvm.org/D12136

llvm-svn: 245498

2015-08-19 20:51:40 +00:00

clang

Internal-linkage variables with constant-evaluatable initializers do not need to be emitted. (Also reduces the set of variables that need to be eagerly deserialized when using PCH / modules.)

2015-08-19 20:49:38 +00:00

clang-tools-extra

Revert "[clang-tidy] Add use-nullptr check to clang-tidy."

2015-08-19 20:30:07 +00:00

compiler-rt

[cmake darwin] Use a STATUS message type. Explain where the arches came from.

2015-08-19 16:23:19 +00:00

debuginfo-tests

New round of fixes for "Always compile debuginfo-tests for the host triple"