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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 /ia32/PrintAsm.ml | |
| 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 'ia32/PrintAsm.ml')
| -rw-r--r-- | ia32/PrintAsm.ml | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/ia32/PrintAsm.ml b/ia32/PrintAsm.ml index 9c8f963a..5fb2568b 100644 --- a/ia32/PrintAsm.ml +++ b/ia32/PrintAsm.ml @@ -606,6 +606,10 @@ let print_instruction oc = function fprintf oc " imull %a, %a\n" ireg r1 ireg rd | Pimul_ri(rd, n) -> fprintf oc " imull $%a, %a\n" coqint n ireg rd + | Pimul_r(r1) -> + fprintf oc " imull %a\n" ireg r1 + | Pmul_r(r1) -> + fprintf oc " mull %a\n" ireg r1 | Pdiv(r1) -> fprintf oc " xorl %%edx, %%edx\n"; fprintf oc " divl %a\n" ireg r1 |