diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Target/ARM/README.txt | 20 |
1 files changed, 0 insertions, 20 deletions
diff --git a/lib/Target/ARM/README.txt b/lib/Target/ARM/README.txt index a6f26a5dfe..9efb5a1426 100644 --- a/lib/Target/ARM/README.txt +++ b/lib/Target/ARM/README.txt @@ -71,26 +71,6 @@ were disabled due to badness with the ARM carry flag on subtracts. //===---------------------------------------------------------------------===// -We currently compile abs: -int foo(int p) { return p < 0 ? -p : p; } - -into: - -_foo: - rsb r1, r0, #0 - cmn r0, #1 - movgt r1, r0 - mov r0, r1 - bx lr - -This is very, uh, literal. This could be a 3 operation sequence: - t = (p sra 31); - res = (p xor t)-t - -Which would be better. This occurs in png decode. - -//===---------------------------------------------------------------------===// - More load / store optimizations: 1) Better representation for block transfer? This is from Olden/power: |