[PATCH v2] ieee754/dbl-64: Reduce the scope of temporary storage variables

[Vineet Gupta]

On 6/2/20 11:16 AM, Joseph Myers wrote:
> On Mon, 1 Jun 2020, Vineet Gupta via Libc-alpha wrote:
> 
>> Also as suggested by Joseph [1] used --strip and compared the libs with
>> and w/o patch and their sizes are exactly same (with gcc 9).
> 
> My suggestion was to compare the *contents* of the libraries, not just 
> their sizes.  Either they should be byte-for-byte identical, or if there 
> are other differences (register allocation, line numbers in assertions, 
> etc.) a more detailed investigation will be needed.
> 

Here's my diff of the 2 --strip builds

for i in `find . -name libm-2.31.9000.so`; do echo $i; diff $i
/SCRATCH/vgupta/gnu2/install/glibcs/$i ; echo $?; done

./aarch64-linux-gnu/lib64/libm-2.31.9000.so
0
./arm-linux-gnueabi/lib/libm-2.31.9000.so
0
./x86_64-linux-gnu/lib64/libm-2.31.9000.so
0
./arm-linux-gnueabihf/lib/libm-2.31.9000.so
0
./riscv64-linux-gnu-rv64imac-lp64/lib64/lp64/libm-2.31.9000.so
0
./riscv64-linux-gnu-rv64imafdc-lp64/lib64/lp64/libm-2.31.9000.so
0
./powerpc-linux-gnu/lib/libm-2.31.9000.so
0
./microblaze-linux-gnu/lib/libm-2.31.9000.so
0
./nios2-linux-gnu/lib/libm-2.31.9000.so
0
./hppa-linux-gnu/lib/libm-2.31.9000.so
0
./s390x-linux-gnu/lib64/libm-2.31.9000.so
0