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| author | xleroy <xleroy@fca1b0fc-160b-0410-b1d3-a4f43f01ea2e> | 2013-09-14 16:24:30 +0000 |
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| committer | xleroy <xleroy@fca1b0fc-160b-0410-b1d3-a4f43f01ea2e> | 2013-09-14 16:24:30 +0000 |
| commit | 76ea1108be6f8b4ba9dc0118a13f685bcb62bc2b (patch) | |
| tree | 8b2dad961e6b368426573e8a217594b9bcb42752 /backend/Constprop.v | |
| parent | 9a0ff6bb768cb0a6e45c1c75727d1cd8199cb89e (diff) | |
| download | compcert-kvx-76ea1108be6f8b4ba9dc0118a13f685bcb62bc2b.tar.gz compcert-kvx-76ea1108be6f8b4ba9dc0118a13f685bcb62bc2b.zip | |
Floats.v, Nan.v: hard-wire the general shape of binop_pl, so that no axioms
are necessary, only two parameters (default_pl and choose_binop_pl).
SelectDiv: optimize FP division by a power of 2.
ConstpropOp: optimize 2.0 * x and x * 2.0 into x + x.
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2326 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
Diffstat (limited to 'backend/Constprop.v')
| -rw-r--r-- | backend/Constprop.v | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/backend/Constprop.v b/backend/Constprop.v index 24573a59..e5ea64d8 100644 --- a/backend/Constprop.v +++ b/backend/Constprop.v @@ -322,7 +322,9 @@ Function annot_strength_reduction let (targs'', args'') := annot_strength_reduction app targs' args' in match ty, approx_reg app arg with | Tint, I n => (AA_int n :: targs'', args'') - | Tfloat, F n => (AA_float n :: targs'', args'') + | Tfloat, F n => if generate_float_constants tt + then (AA_float n :: targs'', args'') + else (AA_arg ty :: targs'', arg :: args'') | _, _ => (AA_arg ty :: targs'', arg :: args'') end | targ :: targs', _ => |