[PATCH] D26855: New unsafe-fp-math implementation for X86 target

[Andrew V. Tischenko via Phabricator via llvm-commits]

avt77 added a comment.

I made new experiments but now I use a dedicated computer for it:

atischenko at ip-172-31-21-62:~/workspaces$ cat time.log 
cmake -G "Ninja" -DCMAKE_BUILD_TYPE=Release -DCMAKE_C_COMPILER=/home/atischenko/workspaces/step3/build/bin/clang -DCMAKE_CXX_COMPILER=/home/atischenko/workspaces/step3/build/bin/clang++ -DCMAKE_C_FLAGS="-O3 -ffast-math" -DCMAKE_CXX_FLAGS="-O3 -ffast-math"  ../llvm
time ninja -j4

*******************

Compiler with patch

********************

real  32m10.783s
user  125m19.424s
sys 3m8.456s




real  31m20.432s
user  122m2.012s
sys 3m4.444s

---------------------------------------------------------------------------------------

On dedicated computer

real  31m23.564s
user  122m13.120s
sys 3m5.340s

real  31m28.115s
user  122m30.596s
sys 3m6.588s

real  31m22.861s
user  122m8.920s
sys 3m7.236s

********************

Trunk based compiler

********************

cmake -G "Ninja" -DCMAKE_BUILD_TYPE=Release -DCMAKE_C_COMPILER=/home/atischenko/workspaces/bootstrap-trunk/build/bin/clang -DCMAKE_CXX_COMPILER=/home/atischenko/workspaces/bootstrap-trunk/build/bin/clang++ -DCMAKE_C_FLAGS="-O3 -ffast-math" -DCMAKE_CXX_FLAGS="-O3 -ffast-math"  ../llvm
time ninja -j4

real  31m46.001s
user  123m39.192s
sys 3m10.180s

real  40m6.791s
user  156m5.472s
sys 3m36.476s

---------------------------------------------------------------------------------------

On dedicated computer

real  31m24.634s
user  122m14.912s
sys 3m8.080s

real  31m22.833s
user  122m9.836s
sys 3m5.676s

real  31m22.795s
user  122m5.924s
sys 3m8.588s

Hope now we can trust my results.


https://reviews.llvm.org/D26855