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CTRY:IE; LANG:en; SCL:1; SRV:; IPV:CAL; SFV:NSPM; H:64aa7808-outbound-1.mta.getcheckrecipient.com; PTR:ec2-63-35-35-123.eu-west-1.compute.amazonaws.com; CAT:NONE; SFS:(13230040)(35042699022)(1800799024)(82310400026)(36860700013)(376014); DIR:OUT; SFP:1101; X-OriginatorOrg: arm.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 28 Aug 2024 10:48:16.7487 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 98e5f523-0c9f-45c2-bdae-08dcc74eec70 X-MS-Exchange-CrossTenant-Id: f34e5979-57d9-4aaa-ad4d-b122a662184d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=f34e5979-57d9-4aaa-ad4d-b122a662184d; Ip=[63.35.35.123]; Helo=[64aa7808-outbound-1.mta.getcheckrecipient.com] X-MS-Exchange-CrossTenant-AuthSource: DB5PEPF00014B9C.eurprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: AS8PR08MB9980 X-Spam-Status: No, score=-12.0 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, FORGED_SPF_HELO, GIT_PATCH_0, KAM_SHORT, SPF_HELO_PASS, SPF_NONE, TXREP, T_SCC_BODY_TEXT_LINE, UNPARSEABLE_RELAY autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org X-BeenThere: gcc-patches@gcc.gnu.org X-Mailman-Version: 2.1.30 Precedence: list List-Id: Gcc-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: gcc-patches-bounces~incoming=patchwork.ozlabs.org@gcc.gnu.org Hi, This is a v2 of: https://gcc.gnu.org/pipermail/gcc-patches/2024-August/659966.html which is rebased on top of Richard S's patch to reduce the cut-and-paste in scanltranstree.exp (thanks again for doing that). Tested on aarch64-linux-gnu, OK for trunk? Thanks, Alex -- >8 -- This extends the scan-ltrans-tree* helpers to create RTL variants. This is needed to check the behaviour of an RTL pass under LTO. gcc/ChangeLog: PR libstdc++/116140 * doc/sourcebuild.texi: Document ltrans-rtl value of kind for scan--dump*. gcc/testsuite/ChangeLog: PR libstdc++/116140 * lib/scanltranstree.exp (scan-ltrans-rtl-dump): New. (scan-ltrans-rtl-dump-not): New. (scan-ltrans-rtl-dump-dem): New. (scan-ltrans-rtl-dump-dem-not): New. (scan-ltrans-rtl-dump-times): New. --- gcc/testsuite/lib/scanltranstree.exp | 80 +++++++++++++--------------- 1 file changed, 37 insertions(+), 43 deletions(-) diff --git a/gcc/testsuite/lib/scanltranstree.exp b/gcc/testsuite/lib/scanltranstree.exp index bc6e02dc369..a7d4de3765f 100644 --- a/gcc/testsuite/lib/scanltranstree.exp +++ b/gcc/testsuite/lib/scanltranstree.exp @@ -19,50 +19,44 @@ load_lib scandump.exp -# The first item in the list is an LTO equivalent of the second item -# in the list; see the documentation of the second item for details. -foreach { name scan type suffix } { - scan-ltrans-tree-dump scan-dump ltrans-tree t - scan-ltrans-tree-dump-not scan-dump-not ltrans-tree t - scan-ltrans-tree-dump-dem scan-dump-dem ltrans-tree t - scan-ltrans-tree-dump-dem-not scan-dump-dem-not ltrans-tree t -} { - eval [string map [list @NAME@ $name \ - @SCAN@ $scan \ - @TYPE@ $type \ - @SUFFIX@ $suffix] { - proc @NAME@ { args } { - if { [llength $args] < 2 } { - error "@NAME@: too few arguments" - return - } - if { [llength $args] > 3 } { - error "@NAME@: too many arguments" - return +# Define scan-ltrans-{tree,rtl}-dump{,-not,-dem,-dem-not}. These are LTO +# variants of the corresponding functions without -ltrans in the name. +foreach ir { tree rtl } { + foreach modifier { {} -not -dem -dem-not } { + eval [string map [list @NAME@ scan-ltrans-$ir-dump$modifier \ + @SCAN@ scan$modifier \ + @TYPE@ ltrans-$ir \ + @SUFFIX@ [string index $ir 0]] { + proc @NAME@ { args } { + if { [llength $args] < 2 } { + error "@NAME@: too few arguments" + return + } + if { [llength $args] > 3 } { + error "@NAME@: too many arguments" + return + } + if { [llength $args] >= 3 } { + @SCAN@ @TYPE@ [lindex $args 0] \ + "\[0-9\]\[0-9\]\[0-9\]@SUFFIX@.[lindex $args 1]" \ + ".ltrans0.ltrans" \ + [lindex $args 2] + } else { + @SCAN@ @TYPE@ [lindex $args 0] \ + "\[0-9\]\[0-9\]\[0-9\]@SUFFIX@.[lindex $args 1]" \ + ".ltrans0.ltrans" + } } - if { [llength $args] >= 3 } { - @SCAN@ @TYPE@ [lindex $args 0] \ - "\[0-9\]\[0-9\]\[0-9\]@SUFFIX@.[lindex $args 1]" \ - ".ltrans0.ltrans" \ - [lindex $args 2] - } else { - @SCAN@ @TYPE@ [lindex $args 0] \ - "\[0-9\]\[0-9\]\[0-9\]@SUFFIX@.[lindex $args 1]" \ - ".ltrans0.ltrans" - } - } - }] + }] + } } -# The first item in the list is an LTO equivalent of the second item -# in the list; see the documentation of the second item for details. -foreach { name scan type suffix } { - scan-ltrans-tree-dump-times scan-dump-times ltrans-tree t -} { - eval [string map [list @NAME@ $name \ - @SCAN@ $scan \ - @TYPE@ $type \ - @SUFFIX@ $suffix] { +# Define scan-ltrans-{tree,rtl}-dump-times. These are LTO variants of the +# corresponding functions without -ltrans in the name. +foreach ir { tree rtl } { + eval [string map [list @NAME@ scan-ltrans-$ir-dump-times \ + @TYPE@ ltrans-$ir \ + @SUFFIX@ [string index $ir 0]] { proc @NAME@ { args } { if { [llength $args] < 3 } { error "@NAME@: too few arguments" @@ -73,11 +67,11 @@ foreach { name scan type suffix } { return } if { [llength $args] >= 4 } { - @SCAN@ "@TYPE@" [lindex $args 0] [lindex $args 1] \ + scan-dump-times "@TYPE@" [lindex $args 0] [lindex $args 1] \ "\[0-9\]\[0-9\]\[0-9\]@SUFFIX@.[lindex $args 2]" \ ".ltrans0.ltrans" [lindex $args 3] } else { - @SCAN@ "@TYPE@" [lindex $args 0] [lindex $args 1] \ + scan-dump-times "@TYPE@" [lindex $args 0] [lindex $args 1] \ "\[0-9\]\[0-9\]\[0-9\]@SUFFIX@.[lindex $args 2]" \ ".ltrans0.ltrans" } From patchwork Wed Aug 28 10:48:44 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alex Coplan X-Patchwork-Id: 1977786 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; 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CTRY:IE; LANG:en; SCL:1; SRV:; IPV:CAL; SFV:NSPM; H:64aa7808-outbound-1.mta.getcheckrecipient.com; PTR:ec2-63-35-35-123.eu-west-1.compute.amazonaws.com; CAT:NONE; SFS:(13230040)(376014)(82310400026)(1800799024)(35042699022)(36860700013); DIR:OUT; SFP:1101; X-OriginatorOrg: arm.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 28 Aug 2024 10:48:56.7579 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 031fd110-fe2c-4e58-a9f8-08dcc74f0449 X-MS-Exchange-CrossTenant-Id: f34e5979-57d9-4aaa-ad4d-b122a662184d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=f34e5979-57d9-4aaa-ad4d-b122a662184d; Ip=[63.35.35.123]; Helo=[64aa7808-outbound-1.mta.getcheckrecipient.com] X-MS-Exchange-CrossTenant-AuthSource: DU2PEPF00028D0A.eurprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PAWPR08MB9097 X-Spam-Status: No, score=-12.0 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, FORGED_SPF_HELO, GIT_PATCH_0, KAM_SHORT, RCVD_IN_DNSWL_NONE, SPF_HELO_PASS, SPF_NONE, TXREP, T_SCC_BODY_TEXT_LINE, UNPARSEABLE_RELAY autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org X-BeenThere: gcc-patches@gcc.gnu.org X-Mailman-Version: 2.1.30 Precedence: list List-Id: Gcc-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: gcc-patches-bounces~incoming=patchwork.ozlabs.org@gcc.gnu.org This is a v2 of: https://gcc.gnu.org/pipermail/gcc-patches/2024-August/659969.html this version just streams the flag as requested. Bootstrapped/tested as a series on aarch64-linux-gnu (both with and without LTO), OK for trunk? Thanks, Alex -- >8 -- When #pragma GCC unroll is processed in tree-cfg.cc:replace_loop_annotate_in_block, we set both the loop->unroll field (which is currently streamed during LTO) but also the cfun->has_unroll flag. cfun->has_unroll, however, is not currently streamed during LTO. This patch fixes that. Prior to this patch, loops marked with #pragma GCC unroll that would be unrolled by RTL loop2_unroll in a non-LTO compilation didn't get unrolled under LTO. gcc/ChangeLog: PR libstdc++/116140 * lto-streamer-in.cc (input_struct_function_base): Stream in fn->has_unroll. * lto-streamer-out.cc (output_struct_function_base): Stream out fn->has_unroll. gcc/testsuite/ChangeLog: PR libstdc++/116140 * g++.dg/ext/pragma-unroll-lambda-lto.C: New test. --- gcc/lto-streamer-in.cc | 1 + gcc/lto-streamer-out.cc | 1 + .../g++.dg/ext/pragma-unroll-lambda-lto.C | 32 +++++++++++++++++++ 3 files changed, 34 insertions(+) create mode 100644 gcc/testsuite/g++.dg/ext/pragma-unroll-lambda-lto.C diff --git a/gcc/lto-streamer-in.cc b/gcc/lto-streamer-in.cc index 64f75807328..9d0ec5d589c 100644 --- a/gcc/lto-streamer-in.cc +++ b/gcc/lto-streamer-in.cc @@ -1326,6 +1326,7 @@ input_struct_function_base (struct function *fn, class data_in *data_in, fn->has_force_vectorize_loops = bp_unpack_value (&bp, 1); fn->has_simduid_loops = bp_unpack_value (&bp, 1); fn->has_musttail = bp_unpack_value (&bp, 1); + fn->has_unroll = bp_unpack_value (&bp, 1); fn->assume_function = bp_unpack_value (&bp, 1); fn->va_list_fpr_size = bp_unpack_value (&bp, 8); fn->va_list_gpr_size = bp_unpack_value (&bp, 8); diff --git a/gcc/lto-streamer-out.cc b/gcc/lto-streamer-out.cc index 523d6dad221..52d0d737330 100644 --- a/gcc/lto-streamer-out.cc +++ b/gcc/lto-streamer-out.cc @@ -2283,6 +2283,7 @@ output_struct_function_base (struct output_block *ob, struct function *fn) bp_pack_value (&bp, fn->has_force_vectorize_loops, 1); bp_pack_value (&bp, fn->has_simduid_loops, 1); bp_pack_value (&bp, fn->has_musttail, 1); + bp_pack_value (&bp, fn->has_unroll, 1); bp_pack_value (&bp, fn->assume_function, 1); bp_pack_value (&bp, fn->va_list_fpr_size, 8); bp_pack_value (&bp, fn->va_list_gpr_size, 8); diff --git a/gcc/testsuite/g++.dg/ext/pragma-unroll-lambda-lto.C b/gcc/testsuite/g++.dg/ext/pragma-unroll-lambda-lto.C new file mode 100644 index 00000000000..144c4c32692 --- /dev/null +++ b/gcc/testsuite/g++.dg/ext/pragma-unroll-lambda-lto.C @@ -0,0 +1,32 @@ +// { dg-do link { target c++11 } } +// { dg-options "-O2 -flto -fdump-rtl-loop2_unroll" } + +#include + +template +inline Iter +my_find(Iter first, Iter last, Pred pred) +{ +#pragma GCC unroll 4 + while (first != last && !pred(*first)) + ++first; + return first; +} + +__attribute__((noipa)) +short *use_find(short *p) +{ + auto pred = [](short x) { return x == 42; }; + return my_find(p, p + 1024, pred); +} + +int main(void) +{ + short a[1024]; + for (int i = 0; i < 1024; i++) + a[i] = rand (); + + return use_find (a) - a; +} + +// { dg-final { scan-ltrans-rtl-dump-times "Unrolled loop 3 times" 1 "loop2_unroll" } }