allow the offset of a preinc'd load to be the low-part of a global. This
produces this clever code:
_millisecs:
lis r2, ha16(_Time.1182)
lwzu r3, lo16(_Time.1182)(r2)
lwz r2, 4(r2)
addic r4, r2, 1
addze r3, r3
blr
instead of this:
_millisecs:
lis r2, ha16(_Time.1182)
la r3, lo16(_Time.1182)(r2)
lwz r2, lo16(_Time.1182)(r2)
lwz r3, 4(r3)
addic r4, r3, 1
addze r3, r2
blr
for:
long %millisecs() {
%tmp = load long* %Time.1182 ; <long> [#uses=1]
%tmp1 = add long %tmp, 1 ; <long> [#uses=1]
ret long %tmp1
}
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31673 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed