From 158a077129cb1579b93ddf440a5bb60b457e4b7c Mon Sep 17 00:00:00 2001 From: Thomas Schwinge Date: Tue, 8 Nov 2022 12:10:03 +0100 Subject: [PATCH] nvptx: stack size limits are relevant for execution only For non-'dg-do run' test cases, that means: big 'dg-require-stack-size' need not be UNSUPPORTED (and indeed now do all PASS), 'dg-add-options stack_size' need not define (and thus limit) 'STACK_SIZE' (and still do all PASS). Re "Find 'dg-do-what' in an outer frame", currently (sources not completely clean, though), we've got: $ git grep -F 'check_effective_target_stack_size: found dg-do-what at level ' -- build-gcc/\*.log | sort | uniq -c 6 build-gcc/gcc/testsuite/gcc/gcc.log:check_effective_target_stack_size: found dg-do-what at level 2 267 build-gcc/gcc/testsuite/gcc/gcc.log:check_effective_target_stack_size: found dg-do-what at level 3 239 build-gcc/gcc/testsuite/gcc/gcc.log:check_effective_target_stack_size: found dg-do-what at level 4 gcc/testsuite/ * lib/target-supports.exp (check_effective_target_stack_size): For nvptx target, stack size limits are relevant for execution only. gcc/ * doc/sourcebuild.texi (stack_size): Update. --- gcc/doc/sourcebuild.texi | 4 ++++ gcc/testsuite/lib/target-supports.exp | 16 ++++++++++++++++ 2 files changed, 20 insertions(+) diff --git a/gcc/doc/sourcebuild.texi b/gcc/doc/sourcebuild.texi index 137f00aadc1f..5bbf6fc55909 100644 --- a/gcc/doc/sourcebuild.texi +++ b/gcc/doc/sourcebuild.texi @@ -2848,6 +2848,10 @@ Target has limited stack size. The stack size limit can be obtained using the STACK_SIZE macro defined by @ref{stack_size_ao,,@code{dg-add-options} feature @code{stack_size}}. +Note that for certain targets, stack size limits are relevant for +execution only, and therefore considered only if @code{dg-do run} is +in effect, otherwise unlimited. + @item static Target supports @option{-static}. diff --git a/gcc/testsuite/lib/target-supports.exp b/gcc/testsuite/lib/target-supports.exp index 750897d08548..39ed1723b03a 100644 --- a/gcc/testsuite/lib/target-supports.exp +++ b/gcc/testsuite/lib/target-supports.exp @@ -625,6 +625,22 @@ proc check_effective_target_trampolines { } { # Return 1 if target has limited stack size. proc check_effective_target_stack_size { } { + # For nvptx target, stack size limits are relevant for execution only. + if { [istarget nvptx-*-*] } { + # Find 'dg-do-what' in an outer frame. + set level 1 + while true { + upvar $level dg-do-what dg-do-what + if [info exists dg-do-what] then break + incr level + } + verbose "check_effective_target_stack_size: found dg-do-what at level $level" 2 + + if { ![string equal [lindex ${dg-do-what} 0] run] } { + return 0 + } + } + if [target_info exists gcc,stack_size] { return 1 } -- 2.35.1