diff options
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Target/X86/README.txt | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/llvm/lib/Target/X86/README.txt b/llvm/lib/Target/X86/README.txt index b794176fa53..5a2da2d3d26 100644 --- a/llvm/lib/Target/X86/README.txt +++ b/llvm/lib/Target/X86/README.txt @@ -437,3 +437,9 @@ It might be better to generate movw al, 8(%edx) when we can spare a register. It reduces code size. + +//===---------------------------------------------------------------------===// + +It's not clear whether we should use pxor or xorps / xorpd to clear XMM +registers. The choice may depend on subtarget information. We should do some +more experiments on different x86 machines. |
