diff options
| author | Simon Marlow <marlowsd@gmail.com> | 2015-09-21 09:14:33 +0100 |
|---|---|---|
| committer | Simon Marlow <marlowsd@gmail.com> | 2015-09-23 14:07:44 +0100 |
| commit | 939a7d6367501d43be73f4e41db7395af1194989 (patch) | |
| tree | e915a6cc270fca5e0b4c803b38e5467f9f4d61c3 /compiler/cmm/PprC.hs | |
| parent | 65bf7baa81772b7f07a4c74d3510dbd2ef03592d (diff) | |
| download | haskell-939a7d6367501d43be73f4e41db7395af1194989.tar.gz | |
Annotate CmmBranch with an optional likely target
Summary:
This allows the code generator to give hints to later code generation
steps about which branch is most likely to be taken. Right now it
is only taken into account in one place: a special case in
CmmContFlowOpt that swapped branches over to maximise the chance of
fallthrough, which is now disabled when there is a likelihood setting.
Test Plan: validate
Reviewers: austin, simonpj, bgamari, ezyang, tibbe
Subscribers: thomie
Differential Revision: https://phabricator.haskell.org/D1273
Diffstat (limited to 'compiler/cmm/PprC.hs')
| -rw-r--r-- | compiler/cmm/PprC.hs | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/compiler/cmm/PprC.hs b/compiler/cmm/PprC.hs index ee0680d3e9..c96b7076bf 100644 --- a/compiler/cmm/PprC.hs +++ b/compiler/cmm/PprC.hs @@ -249,7 +249,7 @@ pprStmt stmt = = pprCall fn cconv hresults hargs CmmBranch ident -> pprBranch ident - CmmCondBranch expr yes no -> pprCondBranch expr yes no + CmmCondBranch expr yes no _ -> pprCondBranch expr yes no CmmCall { cml_target = expr } -> mkJMP_ (pprExpr expr) <> semi CmmSwitch arg ids -> sdocWithDynFlags $ \dflags -> pprSwitch dflags arg ids @@ -1042,7 +1042,7 @@ te_Stmt (CmmUnsafeForeignCall target rs es) = do te_Target target mapM_ te_temp rs mapM_ te_Expr es -te_Stmt (CmmCondBranch e _ _) = te_Expr e +te_Stmt (CmmCondBranch e _ _ _) = te_Expr e te_Stmt (CmmSwitch e _) = te_Expr e te_Stmt (CmmCall { cml_target = e }) = te_Expr e te_Stmt _ = return () |