[patch, testsuite, spu, fortran] Enable automatic overlay support

[Tobias Burnus]

Ulrich Weigand wrote:
> With those changes, I'm seeing no more FAILs due to memory problems.
> Tested on spu-elf. OK for mainline?
>   
Looks ok from the Fortran side.

Tobias

> ChangeLog:
>
> 	* lib/gcc-dg.exp (gcc-dg-prune): Make linker message check
> 	less strict so it also works with auto-overlay support.
> 	* lib/gcc-defs.exp (${tool}_check_unsupported_p): Add check
> 	for "exceeds local store" linker errors on the SPU.
>
> 	* lib/gfortran.exp: Include target-supports.exp.
> 	(gfortran_init): On SPU targets where automatic overlay support
> 	is available, use it to build all Fortran test cases.
>
> 	* gfortran.dg/pr20257.f90: Skip on spu-*-* targets.
>
>
> Index: gcc/testsuite/lib/gcc-dg.exp
> ===================================================================
> *** gcc/testsuite/lib/gcc-dg.exp	(revision 144779)
> --- gcc/testsuite/lib/gcc-dg.exp	(working copy)
> *************** proc gcc-dg-prune { system text } {
> *** 186,192 ****
>       # Likewise, if we see ".text exceeds local store range" or
>       # similar.
>       if {[string match "spu-*" $system] && \
> ! 	    [string match "*exceeds local store range*" $text]} {
>   	# The format here is important.  See dg.exp.
>   	return "::unsupported::memory full"
>       }
> --- 186,192 ----
>       # Likewise, if we see ".text exceeds local store range" or
>       # similar.
>       if {[string match "spu-*" $system] && \
> ! 	    [string match "*exceeds local store*" $text]} {
>   	# The format here is important.  See dg.exp.
>   	return "::unsupported::memory full"
>       }
> Index: gcc/testsuite/lib/gcc-defs.exp
> ===================================================================
> *** gcc/testsuite/lib/gcc-defs.exp	(revision 144779)
> --- gcc/testsuite/lib/gcc-defs.exp	(working copy)
> *************** proc ${tool}_check_unsupported_p { outpu
> *** 150,155 ****
> --- 150,159 ----
>       if [regexp "(^|\n)\[^\n\]*: region \[^\n\]* is full" $output] {
>   	return "memory full"
>       }
> +     if {[istarget spu-*-*] && \
> +             [string match "*exceeds local store*" $output]} {
> + 	return "memory full"
> +     }
>       return ""
>   }
>   
> Index: gcc/testsuite/lib/gfortran.exp
> ===================================================================
> *** gcc/testsuite/lib/gfortran.exp	(revision 144779)
> --- gcc/testsuite/lib/gfortran.exp	(working copy)
> *************** load_lib prune.exp
> *** 27,32 ****
> --- 27,33 ----
>   load_lib gcc-defs.exp
>   load_lib timeout.exp
>   load_lib target-libpath.exp
> + load_lib target-supports.exp
>   
>   #
>   # GFORTRAN_UNDER_TEST is the compiler under test.
> *************** proc gfortran_init { args } {
> *** 177,182 ****
> --- 178,190 ----
>   	lappend ALWAYS_GFORTRANFLAGS "additional_flags=$TOOL_OPTIONS"
>       }
>   
> +     # On the SPU, most of the fortran test cases exceed local store size.
> +     # Use automatic overlay support to make them fit.
> +     if { [check_effective_target_spu_auto_overlay] } {
> + 	lappend ALWAYS_GFORTRANFLAGS "ldflags=-Wl,--auto-overlay"
> + 	lappend ALWAYS_GFORTRANFLAGS "ldflags=-Wl,--reserved-space=131072"
> +     }
> + 
>       verbose -log "ALWAYS_GFORTRANFLAGS set to $ALWAYS_GFORTRANFLAGS"
>   
>       verbose "gfortran is initialized" 3
> Index: gcc/testsuite/gfortran.dg/pr20257.f90
> ===================================================================
> *** gcc/testsuite/gfortran.dg/pr20257.f90	(revision 144779)
> --- gcc/testsuite/gfortran.dg/pr20257.f90	(working copy)
> ***************
> *** 1,4 ****
> --- 1,5 ----
>   ! { dg-do run { target fd_truncate } }
> + ! { dg-skip-if "Too big for local store" { spu-*-* } { "*" } { "" } }
>     integer,parameter :: n = 10000
>     real(8) array(10000)
>   
>