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| author | xleroy <xleroy@fca1b0fc-160b-0410-b1d3-a4f43f01ea2e> | 2013-07-29 12:10:11 +0000 |
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| committer | xleroy <xleroy@fca1b0fc-160b-0410-b1d3-a4f43f01ea2e> | 2013-07-29 12:10:11 +0000 |
| commit | 41b7ecb127b93b1aecc29a298ec21dc94603e6fa (patch) | |
| tree | 287ce1cbf88caf973534715c7816d57b9089b265 /powerpc/Asmgen.v | |
| parent | 4bf8b331372388dc9cb39154c986c918df9e071c (diff) | |
| download | compcert-kvx-41b7ecb127b93b1aecc29a298ec21dc94603e6fa.tar.gz compcert-kvx-41b7ecb127b93b1aecc29a298ec21dc94603e6fa.zip | |
Optimize integer divisions by positive constants, turning them into
multiply-high and shifts.
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2300 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
Diffstat (limited to 'powerpc/Asmgen.v')
| -rw-r--r-- | powerpc/Asmgen.v | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/powerpc/Asmgen.v b/powerpc/Asmgen.v index 2b6d80df..cc9a51cb 100644 --- a/powerpc/Asmgen.v +++ b/powerpc/Asmgen.v @@ -371,6 +371,12 @@ Definition transl_op Pmulli r r1 (Cint n) :: k else loadimm GPR0 n (Pmullw r r1 GPR0 :: k)) + | Omulhs, a1 :: a2 :: nil => + do r1 <- ireg_of a1; do r2 <- ireg_of a2; do r <- ireg_of res; + OK (Pmulhw r r1 r2 :: k) + | Omulhu, a1 :: a2 :: nil => + do r1 <- ireg_of a1; do r2 <- ireg_of a2; do r <- ireg_of res; + OK (Pmulhwu r r1 r2 :: k) | Odiv, a1 :: a2 :: nil => do r1 <- ireg_of a1; do r2 <- ireg_of a2; do r <- ireg_of res; OK (Pdivw r r1 r2 :: k) |