diff --git a/contrib/ChangeLog b/contrib/ChangeLog
index acf530efdbac51a6cfdcef3c1604038e3697a2a6..4f29464b2b6376568b192a672109b7bd65e533f5 100644
--- a/contrib/ChangeLog
+++ b/contrib/ChangeLog
@@ -1,3 +1,7 @@
+2021-03-19 Matthias Klose <doko@ubuntu.com>
+
+ * texi2pod.pl: Substitute @tie{} with a space for the man pages.
+
2021-03-16 Martin Liska <mliska@suse.cz>
* gcc-changelog/git_update_version.py: Skip one problematic
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 82d76faedaed040d208f8ab57ed859f41c9d3a3d..2b518a05e76b07ec6c586b19e24c9b82fadefeee 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,71 @@
+2021-03-19 Pat Haugen <pthaugen@linux.ibm.com>
+
+ * config/rs6000/rs6000.c (power10_cost): New.
+ (rs6000_option_override_internal): Set Power10 costs.
+ (rs6000_issue_rate): Set Power10 issue rate.
+ * config/rs6000/power10.md: Rewrite for Power10.
+
+2021-03-19 Vladimir N. Makarov <vmakarov@redhat.com>
+
+ PR target/99663
+ * lra-constraints.c (process_address_1): Don't use unknown
+ constraint for address constraint.
+
+2021-03-19 Iain Sandoe <iain@sandoe.co.uk>
+
+ PR target/99661
+ * config.gcc (powerpc-*-darwin8): Delete the reference to
+ the now removed darwin8.h.
+
+2021-03-19 Olivier Hainque <hainque@adacore.com>
+
+ PR target/99660
+ * config/vxworksae.h (VX_CPU_PREFIX): Define.
+
+2021-03-19 John David Anglin <danglin@gcc.gnu.org>
+
+ * config/pa/pa.c (import_milli): Use memcpy instead of strncpy.
+
+2021-03-19 Tamar Christina <tamar.christina@arm.com>
+
+ PR tree-optimization/99656
+ * tree-vect-slp-patterns.c (linear_loads_p,
+ complex_add_pattern::matches, is_eq_or_top,
+ vect_validate_multiplication, complex_mul_pattern::matches,
+ complex_fms_pattern::matches): Remove complex_perm_kinds_t.
+ * tree-vectorizer.h: (complex_load_perm_t): Removed.
+ (slp_tree_to_load_perm_map_t): Use complex_perm_kinds_t instead of
+ complex_load_perm_t.
+
+2021-03-19 H.J. Lu <hjl.tools@gmail.com>
+
+ PR target/99652
+ * config/i386/i386-options.c (ix86_init_machine_status): Set
+ silent_p to true.
+ * config/i386/i386.c (init_cumulative_args): Set silent_p to
+ false.
+ (construct_container): Return early for return and argument
+ errors if silent_p is true.
+ * config/i386/i386.h (machine_function): Add silent_p.
+
+2021-03-19 Jakub Jelinek <jakub@redhat.com>
+
+ PR target/99593
+ * config/arm/constraints.md (Ds): New constraint.
+ * config/arm/vec-common.md (mve_vshlq_<supf><mode>): Use w,Ds
+ constraint instead of w,Dm.
+
+2021-03-19 Andrew Stubbs <ams@codesourcery.com>
+
+ * config/gcn/gcn.c (gcn_parse_amdgpu_hsa_kernel_attribute): Fix quotes
+ in error message.
+
+2021-03-19 Eric Botcazou <ebotcazou@adacore.com>
+
+ PR middle-end/99641
+ * fold-const.c (native_encode_initializer) <CONSTRUCTOR>: For an
+ array type, do the computation of the current position in sizetype.
+
2021-03-18 Vladimir N. Makarov <vmakarov@redhat.com>
PR target/99422
diff --git a/gcc/DATESTAMP b/gcc/DATESTAMP
index 44e63e37eef195c70c34e72c951cb8b40762ba1c..ceb88dd1088c6b91de80b8c06d924e7ad89111a8 100644
--- a/gcc/DATESTAMP
+++ b/gcc/DATESTAMP
@@ -1 +1 @@
-20210319
+20210320
diff --git a/gcc/analyzer/ChangeLog b/gcc/analyzer/ChangeLog
index 58b0fbbf8db12486db963e74376a1a347ed08d6f..70b1be51fa1e1118a51a246da6f74617ce377a51 100644
--- a/gcc/analyzer/ChangeLog
+++ b/gcc/analyzer/ChangeLog
@@ -1,3 +1,9 @@
+2021-03-19 David Malcolm <dmalcolm@redhat.com>
+
+ PR analyzer/99614
+ * diagnostic-manager.cc (class epath_finder): Add
+ DISABLE_COPY_AND_ASSIGN.
+
2021-03-15 Martin Liska <mliska@suse.cz>
* sm-file.cc (get_file_using_fns): Add missing comma in initializer.
diff --git a/gcc/c/ChangeLog b/gcc/c/ChangeLog
index e1da0679b5352d6fd6f21416ec40e41642ba301d..5a3e934084f782b0f1108e6f38212a19823000f3 100644
--- a/gcc/c/ChangeLog
+++ b/gcc/c/ChangeLog
@@ -1,3 +1,13 @@
+2021-03-19 Jakub Jelinek <jakub@redhat.com>
+
+ PR c/99588
+ * c-typeck.c (mark_exp_read): Recognize what build_atomic_assign
+ with modifycode NOP_EXPR produces and mark the _Atomic var as read
+ if found.
+ (build_atomic_assign): For modifycode of NOP_EXPR, use COMPOUND_EXPRs
+ rather than STATEMENT_LIST. Otherwise call mark_exp_read on lhs.
+ Set TREE_SIDE_EFFECTS on the TARGET_EXPR.
+
2021-03-15 Tobias Burnus <tobias@codesourcery.com>
PR c++/99509
diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index c63223d211c29f659456306601d920387b653930..ec30050364c592f1ea7c852ced32fe3de9f049b5 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,3 +1,10 @@
+2021-03-19 Jakub Jelinek <jakub@redhat.com>
+
+ PR c++/99456
+ * constexpr.c (cxx_eval_constant_expression): For CONVERT_EXPR from
+ INDIRECT_TYPE_P to ARITHMETIC_TYPE_P, when !ctx->manifestly_const_eval
+ don't diagnose it, set *non_constant_p nor return t.
+
2021-03-19 Marek Polacek <polacek@redhat.com>
PR c++/99500
diff --git a/gcc/fortran/ChangeLog b/gcc/fortran/ChangeLog
index 8cc9403076ceabda730a71c112b234c1afdb03d3..51d4329ee1308df92b8dd16c3beec013e71a936a 100644
--- a/gcc/fortran/ChangeLog
+++ b/gcc/fortran/ChangeLog
@@ -1,3 +1,10 @@
+2021-03-19 Thomas Koenig <tkoenig@gcc.gnu.org>
+
+ * frontend-passes.c (inline_limit_check): Add rank_a
+ argument. If a is rank 1, set the second dimension to 1.
+ (inline_matmul_assign): Pass rank_a argument to inline_limit_check.
+ (call_external_blas): Likewise.
+
2021-03-15 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/99345
diff --git a/gcc/po/ChangeLog b/gcc/po/ChangeLog
index 6430bcfb07c81520b09f3a8e73598e7237511413..89e587ae034edfd9bc8b1b664acfbe0d679c2f8e 100644
--- a/gcc/po/ChangeLog
+++ b/gcc/po/ChangeLog
@@ -1,3 +1,7 @@
+2021-03-19 Joseph Myers <joseph@codesourcery.com>
+
+ * gcc.pot: Regenerate.
+
2021-03-15 Joseph Myers <joseph@codesourcery.com>
* sv.po: Update.
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 488c0cb0386c181b2187c5f7bba263a24a817fef..ddc15babe8e6cdab7eb1f141498e919816490a96 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,50 @@
+2021-03-19 Jakub Jelinek <jakub@redhat.com>
+
+ PR c/99588
+ * gcc.dg/Wunused-var-5.c: New test.
+ * gcc.dg/Wunused-var-6.c: New test.
+
+2021-03-19 Thomas Koenig <tkoenig@gcc.gnu.org>
+
+ * gfortran.dg/inline_matmul_6.f90: Adjust count for
+ _gfortran_matmul.
+
+2021-03-19 Vladimir N. Makarov <vmakarov@redhat.com>
+
+ PR target/99663
+ * gcc.target/s390/pr99663.c: New.
+
+2021-03-19 Jakub Jelinek <jakub@redhat.com>
+
+ PR c++/99456
+ * g++.dg/opt/pr99456.C: New test.
+ * g++.dg/ext/vla22.C: Expect a -Wnarrowing warning for c++11 and
+ later.
+
+2021-03-19 Tamar Christina <tamar.christina@arm.com>
+
+ PR tree-optimization/99656
+ * gfortran.dg/vect/pr99656.f90: New test.
+
+2021-03-19 H.J. Lu <hjl.tools@gmail.com>
+
+ PR target/99652
+ * gcc.dg/torture/pr99652-1.c: New test.
+ * gcc.dg/torture/pr99652-2.c: Likewise.
+ * gcc.target/i386/pr57655.c: Adjusted.
+ * gcc.target/i386/pr59794-6.c: Likewise.
+ * gcc.target/i386/pr70738-1.c: Likewise.
+ * gcc.target/i386/pr96744-1.c: Likewise.
+
+2021-03-19 Jakub Jelinek <jakub@redhat.com>
+
+ PR target/99593
+ * g++.target/arm/pr99593.C: New test.
+
+2021-03-19 Eric Botcazou <ebotcazou@adacore.com>
+
+ * g++.dg/lto/pr89335_0.C: Require the linker plugin.
+
2021-03-19 Marek Polacek <polacek@redhat.com>
PR c++/99500
diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index 2d2bd37c67309017c3b430dfbe2d1cd15b428a84..09e5c2e766ee38f182f385b225ae5506c81fa1d1 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,10 @@
+2021-03-19 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/std/type_traits (is_scoped_enum): Define.
+ * include/std/version (__cpp_lib_is_scoped_enum): Define.
+ * testsuite/20_util/is_scoped_enum/value.cc: New test.
+ * testsuite/20_util/is_scoped_enum/version.cc: New test.
+
2021-03-16 Jonathan Wakely <jwakely@redhat.com>
PR libstdc++/99341