Displaying 3 results from an estimated 3 matches for "calleesave8".
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2013 Feb 02
2
[LLVMdev] logic function optimization: IAR 1 - LLVM 0 ?
I gave the following function to IAR compiler (targeting CortexM0)
and to clang/LLVM 3.2 (clang -O3 -target thumbv6-eabi -emit-llvm)
int
calleeSave8(int in[]){
int out=0;
int i;
for(i=0;i<8;i++){
out ^=
in[i] & in[(i+1)%8];
}//expand to out =
(in[0]&in[1])^(in[1]&in[2])^(in[2]&in[3])^(in[3]&in[4])^(in[4]&in[5])^(in[5]&in[6])^(in[6]&in[7])^(in[7]&in[0])
return out;
}
In such case, IAR compiler is a...
2013 Feb 04
0
[LLVMdev] logic function optimization: IAR 1 - LLVM 0 ?
Have you tried armv7?
-bw
On Feb 2, 2013, at 3:50 PM, matic at nimp.co.uk wrote:
> I gave the following function to IAR compiler (targeting CortexM0) and to clang/LLVM 3.2 (clang -O3 -target thumbv6-eabi -emit-llvm)
>
> int calleeSave8(int in[]){
> int out=0;
> int i;
> for(i=0;i<8;i++){
> out ^= in[i] & in[(i+1)%8];
> }//expand to out = (in[0]&in[1])^(in[1]&in[2])^(in[2]&in[3])^(in[3]&in[4])^(in[4]&in[5])^(in[5]&in[6])^(in[6]&in[7])^(in[7]&in[0])
&...
2013 Feb 05
1
[LLVMdev] logic function optimization: IAR 1 - LLVM 0 ?
...2013-02-04 16:46, Bill Wendling wrote:
> Have you tried
armv7?
>
> -bw
>
> On Feb 2, 2013, at 3:50 PM,
matic at nimp.co.ukwrote:
>
>> I gave the following function to IAR
compiler (targeting CortexM0) and to clang/LLVM 3.2 (clang -O3 -target
thumbv6-eabi -emit-llvm) int calleeSave8(int in[]){ int out=0; int i;
for(i=0;i<8;i++){ out ^= in[i] & in[(i+1)%8]; }//expand to out =
(in[0]&in[1])^(in[1]&in[2])^(in[2]&in[3])^(in[3]&in[4])^(in[4]&in[5])^(in[5]&in[6])^(in[6]&in[7])^(in[7]&in[0])
return out; } In such case, IAR compiler is able to fa...