diff options
Diffstat (limited to 'lib/Target/README.txt')
-rw-r--r-- | lib/Target/README.txt | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/lib/Target/README.txt b/lib/Target/README.txt index 4e14fbbb09..bda764deff 100644 --- a/lib/Target/README.txt +++ b/lib/Target/README.txt @@ -287,6 +287,16 @@ unsigned int popcount(unsigned int input) { return count; } +This should be recognized as CLZ: rdar://8459039 + +unsigned clz_a(unsigned a) { + int i; + for (i=0;i<32;i++) + if (a & (1<<(31-i))) + return i; + return 32; +} + This sort of thing should be added to the loop idiom pass. //===---------------------------------------------------------------------===// |