[PATCH 15/16] Work around test failures using -mno-tree-vrp

[Matthias Kretz]

From: Matthias Kretz <kr...@kde.org>

This is necessary to avoid failures resulting from PR98834.

libstdc++-v3/ChangeLog:
        * testsuite/Makefile.am: Warn about the workaround. Add
        -fno-tree-vrp to CXXFLAGS passed to the check_simd script.
        Improve initial user feedback from make check-simd.
        * testsuite/Makefile.in: Regenerated.
---
 libstdc++-v3/testsuite/Makefile.am | 4 +++-
 libstdc++-v3/testsuite/Makefile.in | 4 +++-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/libstdc++-v3/testsuite/Makefile.am b/libstdc++-v3/testsuite/
Makefile.am
index 2d3ad481dba..ba5023a8b54 100644
--- a/libstdc++-v3/testsuite/Makefile.am
+++ b/libstdc++-v3/testsuite/Makefile.am
@@ -191,8 +191,10 @@ check-simd: $(srcdir)/experimental/simd/
generate_makefile.sh \
            ${glibcxx_srcdir}/scripts/check_simd \
            testsuite_files_simd \
            ${glibcxx_builddir}/scripts/testsuite_flags
+       @echo "WARNING: Adding -fno-tree-vrp to CXXFLAGS to work around 
PR98834."
        @rm -f .simd.summary
-       ${glibcxx_srcdir}/scripts/check_simd "${glibcxx_srcdir}" "$
{glibcxx_builddir}" "$(CXXFLAGS)" | \
+       @echo "Generating simd testsuite subdirs and Makefiles ..."
+       @${glibcxx_srcdir}/scripts/check_simd "${glibcxx_srcdir}" "$
{glibcxx_builddir}" "$(CXXFLAGS) -fno-tree-vrp" | \
          while read subdir; do \
            $(MAKE) -C "$${subdir}"; \
            tail -n20 $${subdir}/simd_testsuite.sum | \
diff --git a/libstdc++-v3/testsuite/Makefile.in b/libstdc++-v3/testsuite/
Makefile.in
index ac6207ae75c..c9dd7f5da61 100644
--- a/libstdc++-v3/testsuite/Makefile.in
+++ b/libstdc++-v3/testsuite/Makefile.in
@@ -716,8 +716,10 @@ check-simd: $(srcdir)/experimental/simd/
generate_makefile.sh \
            ${glibcxx_srcdir}/scripts/check_simd \
            testsuite_files_simd \
            ${glibcxx_builddir}/scripts/testsuite_flags
+       @echo "WARNING: Adding -fno-tree-vrp to CXXFLAGS to work around 
PR98834."
        @rm -f .simd.summary
-       ${glibcxx_srcdir}/scripts/check_simd "${glibcxx_srcdir}" "$
{glibcxx_builddir}" "$(CXXFLAGS)" | \
+       @echo "Generating simd testsuite subdirs and Makefiles ..."
+       @${glibcxx_srcdir}/scripts/check_simd "${glibcxx_srcdir}" "$
{glibcxx_builddir}" "$(CXXFLAGS) -fno-tree-vrp" | \
          while read subdir; do \
            $(MAKE) -C "$${subdir}"; \
            tail -n20 $${subdir}/simd_testsuite.sum | \
-- 
──────────────────────────────────────────────────────────────────────────
 Dr. Matthias Kretz                           https://mattkretz.github.io
 GSI Helmholtz Centre for Heavy Ion Research               https://gsi.de
 std::experimental::simd              https://github.com/VcDevel/std-simd
──────────────────────────────────────────────────────────────────────────