This loop:
/* Make sure the tail invocation of this function does not refer
to local variables. */
FOR_EACH_LOCAL_DECL (cfun, idx, var)
{
if (TREE_CODE (var) != PARM_DECL
&& auto_var_in_fn_p (var, cfun->decl)
&& (ref_maybe_used_by_stmt_p (call, var)
|| call_may_clobber_ref_p (call, var)))
return;
}
triggered even for local variables that are passed by value.
This meant that we didn't allow local aggregates to be passed
to a sibling call but did (for example) allow global aggregates
to be passed.
I think the loop is really checking for indirect references,
so should be able to skip any variables that never have their
address taken.
gcc/
* tree-tailcall.c (find_tail_calls): Allow calls to reference
local variables if all references are known to be direct.
gcc/testsuite/
* gcc.dg/tree-ssa/tailcall-8.c: New test.
From-SVN: r242860
The smaller int size for the avr target breaks the test's
expectation on the number of iterations. The failure goes
away if 32 bit ints are used in place of a plain int.
Fix by conditionally typedef int32_t to __INT32_TYPE__ for targets
with int size < 4, and then use int32_t everywhere.
gcc/testsuite
016-11-25 Senthil Kumar Selvaraj <senthil_kumar.selvaraj@atmel.com>
* gcc.dg/pr64277.c: Use __INT32_TYPE__ for targets
with sizeof(int) < 4.
From-SVN: r242859
2016-11-25 Jakub Jelinek <jakub@redhat.com>
Prathamesh Kulkarni <prathamesh.kulkarni@linaro.org>
PR middle-end/78501
* tree-vrp.c (extract_range_basic): Check for ptrdiff_type_node to be
non null and it's precision matches precision of lhs's type.
Co-Authored-By: Prathamesh Kulkarni <prathamesh.kulkarni@linaro.org>
From-SVN: r242858
2016-11-24 Vladimir Makarov <vmakarov@redhat.com>
PR rtl-optimization/77541
* lra-constraints.c (struct input_reload): Add field match_p.
(get_reload_reg): Check modes of input reloads to generate unique
value reload pseudo.
(match_reload): Add input reload pseudo for the current insn.
2016-11-24 Vladimir Makarov <vmakarov@redhat.com>
PR rtl-optimization/77541
* gcc.target/i386/pr77541.c: New.
From-SVN: r242848
* common/config/sparc/sparc-common.c (sparc_option_optimization_table):
Enable REE at -O2 and higher.
* config/sparc/sparc.c (sparc_option_override): Disable it by default
in 32-bit mode.
From-SVN: r242841
PR target/48863
PR inline-asm/70184
* tree-ssa-ter.c (temp_expr_table): Add reg_vars_cnt field.
(new_temp_expr_table): Initialise reg_vars_cnt.
(free_temp_expr_table): Release reg_vars_cnt.
(process_replaceable): Add reg_vars_cnt argument, set reg_vars_cnt
field of TAB.
(find_replaceable_in_bb): Use the above to record register variable
write occurrences and cancel replacement across them.
* gcc.target/arm/pr48863.c: New test.
From-SVN: r242840
PR rtl-optimization/78437
* ree.c (get_uses): New function.
(combine_reaching_defs): When a copy is needed, return false if any
reaching use of the source register reads it in a mode larger than
the mode it is set in and WORD_REGISTER_OPERATIONS is true.
From-SVN: r242839
2016-11-24 Richard Biener <rguenther@suse.de>
PR tree-optimization/71595
* cfgloopmanip.h (remove_path): Add irred_invalidated and
loop_closed_ssa_invalidated parameters, defaulted to NULL.
* cfgloopmanip.c (remove_path): Likewise, pass them along to
called functions. Only fix irred flags if the caller didn't
request state.
* tree-ssa-loop-ivcanon.c (unloop_loops): Use add_bb_to_loop.
(unloop_loops): Pass irred_invalidated and loop_closed_ssa_invalidated
to remove_path.
* gcc.dg/torture/pr71595.c: New testcase.
From-SVN: r242835
PR rtl-optimization/78120
* ifcvt.c (noce_conversion_profitable_p): Check original cost in all
cases, and additionally test against max_seq_cost for speed
optimization.
(noce_process_if_block): Compute an estimate for the original cost when
optimizing for speed, using the minimum of then and else block costs.
testsuite/
PR rtl-optimization/78120
* gcc.target/i386/pr78120.c: New test.
From-SVN: r242834
PR middle-end/78429
* tree.h (wi::fits_to_boolean_p): New predicate.
(wi::fits_to_tree_p): Use it for boolean types.
* tree.c (int_fits_type_p): Likewise.
From-SVN: r242829
* print-tree.c (struct bucket): Remove.
(print_node): Add new argument which drives whether a tree node
is printed briefly or not.
(debug_tree): Replace a custom hash table with hash_set<T>.
* print-tree.h (print_node): Add the argument.
From-SVN: r242820
gcc/
PR target/78458
* config/rs6000/rs6000.h (HARD_REGNO_CALLER_SAVE_MODE): Return MODE
if it is at least NREGS wide.
gcc/testsuite/
PR target/78458
* gcc.target/powerpc/pr78458.c: New.
From-SVN: r242818
Given my previous fix for a missing insn pattern for e500, building
glibc runs into an assembler error "Error: operand out of range (256
is not between 0 and 248)". This comes from an insn:
(insn 115 1209 1210 (set (reg:DF 27 27 [orig:294 _129 ] [294])
(subreg:DF (mem/c:TI (plus:SI (reg/f:SI 1 1)
(const_int 256 [0x100])) [14 %sfp+256 S16 A128]) 0)) 1909 {*frob_df_ti}
(nil))
This patch adjusts the offset handling for TImode - and TDmode and
PTImode in case such subregs can arise for them - to be the same as
for TFmode, so that proper SPE offset checks are made in the
TARGET_E500_DOUBLE case.
This allows the glibc build to complete. Testing shows 372 FAILs
across the gcc, g++ and libstdc++ testsuites; more cleanup is
certainly needed, but this gets to the point where the toolchain at
least builds so it's possible to compare test results when fixing
bugs.
* config/rs6000/rs6000.c (rs6000_legitimate_offset_address_p): For
TARGET_E500_DOUBLE. handle TDmode, TImode and PTImode the same as
TFmode, IFmode and KFmode.
From-SVN: r242814
Building glibc for powerpc-linux-gnuspe --enable-e500-double, given
the patch <https://gcc.gnu.org/ml/gcc-patches/2016-11/msg02404.html>
applied, fails with errors such as:
../sysdeps/ieee754/ldbl-128ibm/s_modfl.c: In function '__modfl':
../sysdeps/ieee754/ldbl-128ibm/s_modfl.c:91:1: error: unrecognizable insn:
}
^
(insn 31 30 32 2 (set (reg:DF 203)
(subreg:DF (reg:TI 202) 8)) "../sysdeps/ieee754/ldbl-128ibm/s_modfl.c":44 -1
(nil))
../sysdeps/ieee754/ldbl-128ibm/s_modfl.c:91:1: internal compiler error: in extract_insn, at recog.c:2311
This patch adds an insn pattern similar to various patterns already
present to handle extracting such a subreg. This allows the glibc
build to get further, until it runs into an assembler error for which
I have another patch.
gcc:
* config/rs6000/spe.md (*frob_<SPE64:mode>_ti_8): New insn
pattern.
gcc/testsuite:
* gcc.c-torture/compile/20161123-1.c: New test.
From-SVN: r242813
As reported in https://gcc.gnu.org/ml/gcc-patches/2016-11/msg02388.html .
Changing the mode of a hard register can lead to problems, or at least
it can make worse code if the result will need reloads.
* combine.c (change_zero_ext): Only change the mode of a hard register
destination if can_change_dest_mode holds for that.
From-SVN: r242812
2016-11-07 Bernd Edlinger <bernd.edlinger@hotmail.de>
* opth-gen.awk: Use unsigned shifts for bit masks. Allow all bits
to be used. Add brackets around macro argument.
From-SVN: r242803
2016-11-23 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/78297
* trans-common.c (finish_equivalences): Do not dereference a NULL pointer.
2016-11-23 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/78297
* gfortran.dg/pr78297.f90: New test.
From-SVN: r242802
PR sanitizer/69278
* opts.c (parse_sanitizer_options): For -fsanitize=undefined,
restore enabling also SANITIZE_UNREACHABLE and SANITIZE_RETURN.
* g++.dg/ubsan/return-7.C: New test.
* c-c++-common/ubsan/unreachable-4.c: New test.
From-SVN: r242795
PR tree-optimization/78482
* gcc.dg/torture/pr78482.c (c, d): Use signed char instead of char.
(bar): New function.
(main): Call bar instead of printf.
From-SVN: r242794
PR middle-end/69183
* omp-low.c (build_outer_var_ref): Change lastprivate argument
to code, pass it recursively, adjust uses. For OMP_CLAUSE_PRIVATE
on worksharing constructs, treat it like clauses on simd construct.
Formatting fix.
(lower_rec_input_clauses): For OMP_CLAUSE_PRIVATE_OUTER_REF pass
OMP_CLAUSE_PRIVATE as last argument to build_outer_var_ref.
(lower_lastprivate_clauses): Pass OMP_CLAUSE_LASTPRIVATE instead
of true as last argument to build_outer_var_ref.
* gfortran.dg/gomp/pr69183.f90: New test.
From-SVN: r242793
