Merge of branch linear-typing:

1) Revised division of labor between RTLtyping and Lineartyping:
- RTLtyping no longer keeps track of single-precision floats,
  switches from subtype-based inference to unification-based inference.
- Unityping: new library for unification-based inference.
- Locations: don't normalize at assignment in a stack slot
- Allocation, Allocproof: simplify accordingly.
- Lineartyping: add inference of locations that contain
  a single-precision float.
- Stackingproof: adapted accordingly.

This addresses a defect report whereas RTLtyping was rejecting code that used a RTL pseudoreg to hold both double- and single-precision floats (see test/regression/singlefloats.c).

This corresponds to commits 2435+2436 plus improvements in Lineartyping.

2) Add -dtimings option to measure compilation times.
Moved call to C parser from Elab to Parse, to make it easier to
measure parsing time independently of elaboration time.


git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2449 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e

1 files changed, 2 insertions, 0 deletions

diff --git a/driver/Driver.ml b/driver/Driver.ml
index 8853794..e768fa2 100644
--- a/driver/Driver.ml
+++ b/driver/Driver.ml
@@ -457,6 +457,7 @@ Tracing options:
 General options:
   -stdlib <dir>  Set the path of the Compcert run-time library
   -v             Print external commands before invoking them
+  -timings       Show the time spent in various compiler passes
 Interpreter mode:
   -interp        Execute given .c files using the reference interpreter
   -quiet         Suppress diagnostic messages for the interpreter
@@ -529,6 +530,7 @@ let cmdline_actions =
       push_linker_arg s);
   "-Os$", Set option_Osize;
   "-O$", Unset option_Osize;
+  "-timings$", Set option_timings;
   "-fsmall-data$", Integer(fun n -> option_small_data := n);
   "-fsmall-const$", Integer(fun n -> option_small_const := n);
   "-ffloat-const-prop$", Integer(fun n -> option_ffloatconstprop := n);