diff options
| -rw-r--r-- | lib/Target/X86/README.txt | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/lib/Target/X86/README.txt b/lib/Target/X86/README.txt index 354439b..c9f23d5 100644 --- a/lib/Target/X86/README.txt +++ b/lib/Target/X86/README.txt @@ -73,3 +73,12 @@ Another useful one would be ~0ULL >> X and ~0ULL << X. Should support emission of the bswap instruction, probably by adding a new DAG node for byte swapping. Also useful on PPC which has byte-swapping loads. +//===---------------------------------------------------------------------===// + +Compile this: +_Bool f(_Bool a) { return a!=1; } + +into: + movzbl %dil, %eax + xorl $1, %eax + ret |