From 2a0168fea37b68ad14e2cb60bf215111e49d4870 Mon Sep 17 00:00:00 2001 From: xleroy Date: Wed, 23 Jul 2014 08:54:56 +0000 Subject: Merge of "newspilling" branch: - Support single-precision floats as first-class values - Introduce chunks Many32, Many64 and types Tany32, Tany64 to support saving and restoring registers without knowing the exact types (int/single/float) of their contents, just their sizes. - Memory model: generalize the opaque encoding of pointers to apply to any value, not just pointers, if chunks Many32/Many64 are selected. - More properties of FP arithmetic proved. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2537 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e --- cfrontend/Clight.v | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'cfrontend/Clight.v') diff --git a/cfrontend/Clight.v b/cfrontend/Clight.v index f2ba2405..d9fb6501 100644 --- a/cfrontend/Clight.v +++ b/cfrontend/Clight.v @@ -47,7 +47,8 @@ Require Import Cop. Inductive expr : Type := | Econst_int: int -> type -> expr (**r integer literal *) - | Econst_float: float -> type -> expr (**r float literal *) + | Econst_float: float -> type -> expr (**r double float literal *) + | Econst_single: float32 -> type -> expr (**r single float literal *) | Econst_long: int64 -> type -> expr (**r long integer literal *) | Evar: ident -> type -> expr (**r variable *) | Etempvar: ident -> type -> expr (**r temporary variable *) @@ -69,6 +70,7 @@ Definition typeof (e: expr) : type := match e with | Econst_int _ ty => ty | Econst_float _ ty => ty + | Econst_single _ ty => ty | Econst_long _ ty => ty | Evar _ ty => ty | Etempvar _ ty => ty @@ -352,6 +354,8 @@ Inductive eval_expr: expr -> val -> Prop := eval_expr (Econst_int i ty) (Vint i) | eval_Econst_float: forall f ty, eval_expr (Econst_float f ty) (Vfloat f) + | eval_Econst_single: forall f ty, + eval_expr (Econst_single f ty) (Vsingle f) | eval_Econst_long: forall i ty, eval_expr (Econst_long i ty) (Vlong i) | eval_Etempvar: forall id ty v, -- cgit