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| author | Evan Cheng <evan.cheng@apple.com> | 2005-12-17 06:54:43 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2005-12-17 06:54:43 +0000 |
| commit | 7087cd275bff174fcadbcc64c736e006177f1f57 (patch) | |
| tree | 269fb149bad7e6852773d066b2ab138500566d6d /llvm/lib | |
| parent | 9e2af046e44a926f33ff59d0854f37721e6d64fa (diff) | |
| download | bcm5719-llvm-7087cd275bff174fcadbcc64c736e006177f1f57.tar.gz bcm5719-llvm-7087cd275bff174fcadbcc64c736e006177f1f57.zip | |
Added an idea about any_extend for performance tuning.
llvm-svn: 24763
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Target/X86/README.txt | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/llvm/lib/Target/X86/README.txt b/llvm/lib/Target/X86/README.txt index 6e23fca25c6..5fdcc696193 100644 --- a/llvm/lib/Target/X86/README.txt +++ b/llvm/lib/Target/X86/README.txt @@ -102,3 +102,8 @@ Some isel ideas: //===---------------------------------------------------------------------===// Should we promote i16 to i32 to avoid partial register update stalls? + +//===---------------------------------------------------------------------===// + +Leave any_extend as pseudo instruction and hint to register +allocator. Delay codegen until post register allocation. |
