2 Commits

Author	SHA1	Message	Date
Sanjay Patel	daf34e9d85	convert builtin_unpredictable on a switch into metadata for LLVM ... llvm-svn: 247203	2015-09-09 22:39:06 +00:00
Sanjay Patel	a24296b459	add __builtin_unpredictable and convert to metadata ... This patch depends on r246688 (D12341). The goal is to make LLVM generate different code for these functions for a target that has cheap branches (see PR23827 for more details): int foo(); int normal(int x, int y, int z) { if (x != 0 && y != 0) return foo(); return 1; } int crazy(int x, int y) { if (__builtin_unpredictable(x != 0 && y != 0)) return foo(); return 1; } Differential Revision: http://reviews.llvm.org/D12458 llvm-svn: 246699	2015-09-02 20:01:30 +00:00