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| author | Evan Cheng <evan.cheng@apple.com> | 2009-07-10 02:10:17 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2009-07-10 02:10:17 +0000 |
| commit | 01b863087962f6a5d5b799f14b9a5466a8b95eba (patch) | |
| tree | 41328a517f5ee4f6aaae32cc655e5f6cdf2972a9 /llvm/lib | |
| parent | 61671c87a7541955f70f104754ce87e2b3c169c1 (diff) | |
| download | bcm5719-llvm-01b863087962f6a5d5b799f14b9a5466a8b95eba.tar.gz bcm5719-llvm-01b863087962f6a5d5b799f14b9a5466a8b95eba.zip | |
More info about Thumb1 predication support.
llvm-svn: 75220
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Target/ARM/README-Thumb.txt | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/llvm/lib/Target/ARM/README-Thumb.txt b/llvm/lib/Target/ARM/README-Thumb.txt index 3b27ed3889a..eed3c54372a 100644 --- a/llvm/lib/Target/ARM/README-Thumb.txt +++ b/llvm/lib/Target/ARM/README-Thumb.txt @@ -236,4 +236,5 @@ to avoid extra work when we convert Thumb2 instructions to Thumb1 instructions. //===---------------------------------------------------------------------===// We need to make (some of the) Thumb1 instructions predicable. That will allow -shrinking of predicated Thumb2 instructions. +shrinking of predicated Thumb2 instructions. To allow this, we need to be able +to toggle the 's' bit since they do not set CPSR when they are inside IT blocks. |
