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| author | Chad Rosier <mcrosier@apple.com> | 2011-11-13 02:23:59 +0000 |
|---|---|---|
| committer | Chad Rosier <mcrosier@apple.com> | 2011-11-13 02:23:59 +0000 |
| commit | b29b950bf227b65e193abf924f77ef3fa4eceaae (patch) | |
| tree | a708dfb42fcc7a91c7647794b2b4b14e59b83593 /lib/CodeGen | |
| parent | 569561c7eedbd96b8f78c30505d2bdc265a1efc5 (diff) | |
Add support for emitting both signed- and zero-extend loads. Fix
SimplifyAddress to handle either a 12-bit unsigned offset or the ARM +/-imm8
offsets (addressing mode 3). This enables a load followed by an integer
extend to be folded into a single load.
For example:
ldrb r1, [r0] ldrb r1, [r0]
uxtb r2, r1 =>
mov r3, r2 mov r3, r1
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144488 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen')
0 files changed, 0 insertions, 0 deletions