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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18911 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2004-12-13 20:13:10 +00:00
parent 2356f8612e
commit e171d5c812
2 changed files with 42 additions and 2 deletions
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22
lib/Target/Sparc/README.txt
View File

@@ -53,7 +53,27 @@ To-do
* support shl on longs (fourinarow needs this) * support shl on longs (fourinarow needs this)
* support casting 64-bit integers to FP types (fhourstones needs this) * support casting 64-bit integers to FP types (fhourstones needs this)
* support FP rem * support FP rem (call fmod)
* Eliminate srl/sll by zero bits like this:
sll %l0, 0, %l0
srl %l0, 0, %o0
We think these are only used by V9 to clear off the top 32 bits of a reg,
so they are not needed.
* Keep the address of the constant pool in a register instead of forming its
address all of the time.
* Change code like this:
or %o0, %lo(.CPI_main_0), %o0
ld [%o0+0], %o0
into:
ld [%o0+%lo(.CPI_main_0)], %o0
for constant pool access.
* We can fold small constant offsets into the %hi/%lo references to constant
pool addresses as well.
$Date$ $Date$

22
lib/Target/SparcV8/README.txt
View File

@@ -53,7 +53,27 @@ To-do
* support shl on longs (fourinarow needs this) * support shl on longs (fourinarow needs this)
* support casting 64-bit integers to FP types (fhourstones needs this) * support casting 64-bit integers to FP types (fhourstones needs this)
* support FP rem * support FP rem (call fmod)
* Eliminate srl/sll by zero bits like this:
sll %l0, 0, %l0
srl %l0, 0, %o0
We think these are only used by V9 to clear off the top 32 bits of a reg,
so they are not needed.
* Keep the address of the constant pool in a register instead of forming its
address all of the time.
* Change code like this:
or %o0, %lo(.CPI_main_0), %o0
ld [%o0+0], %o0
into:
ld [%o0+%lo(.CPI_main_0)], %o0
for constant pool access.
* We can fold small constant offsets into the %hi/%lo references to constant
pool addresses as well.
$Date$ $Date$