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| author | David Monniaux <david.monniaux@univ-grenoble-alpes.fr> | 2019-07-19 18:25:09 +0200 |
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| committer | David Monniaux <david.monniaux@univ-grenoble-alpes.fr> | 2019-07-19 18:25:09 +0200 |
| commit | 3b79923a6c9fa8c76916df1eecfdecd7ae2124a5 (patch) | |
| tree | 98b27b88ea7195a244eff90eaa5f63028ad518a6 /backend/Selectionaux.ml | |
| parent | 9bc337d05eed466e2bfc9b18aa35fac34d3954a9 (diff) | |
| parent | 91381b65f5aa76e5195caae9ef331b3f5f95afaf (diff) | |
| download | compcert-kvx-3b79923a6c9fa8c76916df1eecfdecd7ae2124a5.tar.gz compcert-kvx-3b79923a6c9fa8c76916df1eecfdecd7ae2124a5.zip | |
Merge branch 'master' of https://github.com/AbsInt/CompCert into mppa-work-upstream-merge
Diffstat (limited to 'backend/Selectionaux.ml')
| -rw-r--r-- | backend/Selectionaux.ml | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/backend/Selectionaux.ml b/backend/Selectionaux.ml index 4e366564..60a1eccd 100644 --- a/backend/Selectionaux.ml +++ b/backend/Selectionaux.ml @@ -80,10 +80,10 @@ let fast_cmove ty = | a, m -> failwith (Printf.sprintf "fast_cmove: unknown arch %s %s" a m) (* The if-conversion heuristic depend on the - -fif-conversion and -ffavor-branchless flags. + -fif-conversion and -Obranchless flags. With [-fno-if-conversion] or [-0O], if-conversion is turned off entirely. -With [-ffavor-branchless], if-conversion is performed whenever semantically +With [-Obranchless], if-conversion is performed whenever semantically correct, regardless of how much it could cost. Otherwise (and by default), optimization is performed when it seems beneficial. @@ -111,7 +111,7 @@ instructions from the first branch. let if_conversion_heuristic cond ifso ifnot ty = if not !Clflags.option_fifconversion then false else - if !Clflags.option_ffavor_branchless then true else + if !Clflags.option_Obranchless then true else if not (fast_cmove ty) then false else let c1 = cost_expr ifso and c2 = cost_expr ifnot in c1 + c2 <= 24 && abs (c1 - c2) <= 8 |