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| author | Xavier Leroy <xavier.leroy@inria.fr> | 2016-05-17 15:37:56 +0200 |
|---|---|---|
| committer | Xavier Leroy <xavier.leroy@inria.fr> | 2016-05-17 15:37:56 +0200 |
| commit | 82f9d1f96b30106a338e77ec83b7321c2c65f929 (patch) | |
| tree | 6b8bb30473b1385f8b84fe1600f592c2bd4abed7 /cfrontend/PrintClight.ml | |
| parent | 672393ef623acb3e230a8019d51c87e051a7567a (diff) | |
| download | compcert-kvx-82f9d1f96b30106a338e77ec83b7321c2c65f929.tar.gz compcert-kvx-82f9d1f96b30106a338e77ec83b7321c2c65f929.zip | |
Introduce register pairs to describe calling conventions more precisely
This commit changes the loc_arguments and loc_result functions that describe calling conventions so that each argument/result can be mapped either to a single location or (in the case of a 64-bit integer) to a pair of two 32-bit locations.
In the current CompCert, all arguments/results of type Tlong are systematically split in two 32-bit halves. We will need to change this in the future to support 64-bit processors. The alternative approach implemented by this commit enables the loc_arguments and loc_result functions to describe precisely which arguments need splitting. Eventually, the remainder of CompCert should not assume anything about splitting 64-bit types in two halves.
Summary of changes:
- AST: introduce the type "rpair A" of register pairs
- Conventions1, Conventions: use it when describing calling conventions
- LTL, Linear, Mach, Asm: honor the new calling conventions when observing external calls
- Events: suppress external_call', no longer useful
- All passes from Allocation to Asmgen: adapt accordingly.
Diffstat (limited to 'cfrontend/PrintClight.ml')
| -rw-r--r-- | cfrontend/PrintClight.ml | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/cfrontend/PrintClight.ml b/cfrontend/PrintClight.ml index e08411a5..7fa35f16 100644 --- a/cfrontend/PrintClight.ml +++ b/cfrontend/PrintClight.ml @@ -50,7 +50,7 @@ let precedence = function | Ebinop((Oadd|Osub), _, _, _) -> (12, LtoR) | Ebinop((Oshl|Oshr), _, _, _) -> (11, LtoR) | Ebinop((Olt|Ogt|Ole|Oge), _, _, _) -> (10, LtoR) - | Ebinop((Oeq|One), _, _, _) -> (9, LtoR) + | Ebinop((Oeq|Cop.One), _, _, _) -> (9, LtoR) | Ebinop(Oand, _, _, _) -> (8, LtoR) | Ebinop(Oxor, _, _, _) -> (7, LtoR) | Ebinop(Oor, _, _, _) -> (6, LtoR) |