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| author | Evan Cheng <evan.cheng@apple.com> | 2009-07-09 20:50:52 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2009-07-09 20:50:52 +0000 |
| commit | 6dded67b0d6262964e22163d0ab37c9ee6957c0a (patch) | |
| tree | 465b018ef9a581b139b541592fd47d2ac14a3efb /lib/Target/ARM/README-Thumb.txt | |
| parent | cba962dd6b46fce807dfe3ed97da04ec5ad98c34 (diff) | |
| download | llvm-6dded67b0d6262964e22163d0ab37c9ee6957c0a.tar.gz llvm-6dded67b0d6262964e22163d0ab37c9ee6957c0a.tar.bz2 llvm-6dded67b0d6262964e22163d0ab37c9ee6957c0a.tar.xz | |
Add a Thumb readme entry.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75173 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/ARM/README-Thumb.txt')
| -rw-r--r-- | lib/Target/ARM/README-Thumb.txt | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/lib/Target/ARM/README-Thumb.txt b/lib/Target/ARM/README-Thumb.txt index 4d3200b445..ecef58a32d 100644 --- a/lib/Target/ARM/README-Thumb.txt +++ b/lib/Target/ARM/README-Thumb.txt @@ -226,3 +226,9 @@ etc. Almost all Thumb instructions clobber condition code. //===---------------------------------------------------------------------===// Add ldmia, stmia support. + +//===---------------------------------------------------------------------===// + +Thumb load / store address mode offsets are scaled. The values kept in the +instruction operands are pre-scale values. This probably ought to be changed +to avoid extra work when we convert Thumb2 instructions to Thumb1 instructions. |