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  1. 13 Nov, 2016 7 commits
  3. 12 Nov, 2016 9 commits
  5. 11 Nov, 2016 14 commits
  7. 10 Nov, 2016 10 commits
    • re PR c/37998 (Unclear documentation of -fno-common) · c47c7215 
      2016-11-10  Sandra Loosemore  <sandra@codesourcery.com>

	PR c/37998

	gcc/
	* doc/invoke.texi (Code Gen Options) [-fno-common]: Use correct
	terminology.  Expand to remove ambiguity.

From-SVN: r242062
      Sandra Loosemore committed
    • runtime: copy signal code from Go 1.7 runtime · 980f9a0a 
          
    Add a little shell script to auto-generate runtime.sigtable from the
    known signal names.
    
    Force the main package to always import the runtime package.  Otherwise
    some runtime package global variables may never be initialized.
    
    Set the syscallsp and syscallpc fields of g when entering a syscall, so
    that the runtime package knows when a g is executing a syscall.
    
    Fix runtime.funcPC to avoid dead store elimination of the interface
    value when the function is inlined.
    
    Reviewed-on: https://go-review.googlesource.com/33025

From-SVN: r242060
      Ian Lance Taylor committed
    • combine: Do not call simplify from inside change_zero_ext (PR78232) · 071af74d 
      When combine splits a three-insn combination into two instructions it
can reuse i2dest for the temporary result of the first new instruction.
However all information it has in reg_stat about that register will be
stale.  This results in the simplify_gen_binary calls in change_zero_ext
using out-of-date information, which makes it think one of the ANDs
generated there always results in 0, and it doesn't get better from there.

This can also happen if a splitter in the MD uses nonzero_bits (for
example).  I tried to make the splitting code in combine save and restore
the i2dest reg_stat info, but that causes one of the acats tests to fail.

This whole reg_stat thing needs an overhaul, and/or we shouldn't reuse
i2dest for unrelated purposes when splitting.

This patch changes change_zero_ext to do the expected simplifications
itself and not call simplify_gen_*.


	PR rtl-optimization/78232
	* combine.c (try_combine): Add a big comment about why reusing i2dest
	is undesirable.
	(change_zero_ext): Do not call simplify_gen_binary, do the
	simplifications manually.

From-SVN: r242059
      Segher Boessenkool committed
    • Fix ICE and improve errors for invalid anonymous structure declarations. · 94903212 
      	PR fortran/78277
	* gcc/fortran/decl.c (gfc_match_data_decl): Gracefully handle bad
	anonymous structure declarations.

	PR fortran/78277
	* gcc/testsuite/gfortran.dg/dec_structure_17.f90: New test.

From-SVN: r242058
      Fritz O. Reese committed
    • Fix some whitespace. · 05b8fcb4 
      	gcc/fortran/
	* decl.c (get_struct_decl, gfc_match_map, gfc_match_union): Fix
	whitespace.
	* interface.c (gfc_compare_union_types): Likewise.

From-SVN: r242057
      Fritz O. Reese committed
    • PR c++/77337 - auto return and lambda · f065303f 
      	* pt.c (tsubst_friend_function): Don't set DECL_INITIAL.
	(instantiate_decl): It's OK to defer a constexpr function.
	* cp-tree.h (DECL_FRIEND_PSEUDO_TEMPLATE_INSTANTIATION): Check
	DECL_LANG_SPECIFIC.
	* decl2.c (decl_defined_p): Use it.  No longer static.
	* decl.c (redeclaration_error_message): Use decl_defined_p.
	* constexpr.c (cxx_eval_call_expression): Set input_location around
	call to instantiate_decl.

From-SVN: r242056
      Jason Merrill committed
    • debug.cc (format_word): Delete. · 28d1bf44 
      2016-11-10  François Dumont  <fdumont@gcc.gnu.org>

	* src/c++11/debug.cc (format_word): Delete.
	(print_literal): New. Replace call to print_word for literals.

From-SVN: r242055
      François Dumont committed
    • rs6000.c (rs6000_hard_regno_mode_ok): If ISA 3.0... · 456f0dfa 
      [gcc]
2016-11-10  Michael Meissner  <meissner@linux.vnet.ibm.com>

	* config/rs6000/rs6000.c (rs6000_hard_regno_mode_ok): If ISA 3.0,
	enable HImode and QImode to go in vector registers by default if
	the -mvsx-small-integer option is enabled.
	(rs6000_secondary_reload_simple_move): Likewise.
	(rs6000_preferred_reload_class): Don't force integer constants to
	be loaded into vector registers that we can easily make into
	memory (or being created in the GPRs and moved over with direct
	move).
	* config/rs6000/vsx.md (UNSPEC_P9_MEMORY): Delete, no longer
	used.
	(vsx_extract_<mode>): Rework V4SImode, V8HImode, and V16QImode
	vector extraction on ISA 3.0 when the scalar integer can be
	allocated in vector registers.  Generate the VEC_SELECT directy,
	and don't use UNSPEC's to avoid having the scalar type in a vector
	register.  Make the expander target registers, and let the
	combiner fold in results storing to memory, if the machine
	supports stores.
	(vsx_extract_<mode>_di): Likewise.
	(vsx_extract_<mode>_p9): Likewise.
	(vsx_extract_<mode>_di_p9): Likewise.
	(vsx_extract_<mode>_store_p9): Likewise.
	(vsx_extract_si): Likewise.
	(vsx_extract_<mode>_p8): Likewise.
	(p9_lxsi<wd>zx): Delete, no longer used.
	(p9_stxsi<wd>x): Likewise.
	* config/rs6000/rs6000.md (INT_ISA3): New mode iterator for
	integers in vector registers for ISA 3.0.
	(QHI): Update comment.
	(zero_extendqi<mode>2): Add support for ISA 3.0 scalar load or
	vector extract instructions in sign/zero extend.
	(zero_extendhi<mode>): Likewise.
	(extendqi<mode>): Likewise.
	(extendhi<mode>2): Likewise.
	(HImode splitter for load/sign extend in vector register):
	Likewise.
	(float<QHI:mode><FP_ISA3:mode>2): Eliminate old method of
	optimizing floating point conversions to/from small data types and
	rewrite it to support QImode/HImode being allowed in vector
	registers on ISA 3.0.
	(float<QHI:mode><FP_ISA3:mode>2_internal): Likewise.
	(floatuns<QHI:mode><FP_ISA3:mode>2): Likewise.
	(floatuns<QHI:mode><FP_ISA3:mode>2_internal): Likewise.
	(fix_trunc<SFDF:mode><QHI:mode>2): Likewise.
	(fix_trunc<SFDF:mode><QHI:mode>2_internal): Likewise.
	(fixuns_trunc<SFDF:mode><QHI:mode>2): Likewise.
	(fixuns_trunc<SFDF:mode><QHI:mode>2_internal): Likewise.
	VSPLITISW on ISA 2.07.
	(movhi_internal): Combine movhi_internal and movqi_internal into
	one mov<mode>_internal with an iterator.  Add support for QImode
	and HImode being allowed in vector registers.  Make large number
	of attributes and constraints easier to read.
	(movqi_internal): Likewise.
	(mov<mode>_internal): Likewise.
	(movdi_internal64): Fix constraint to allow loading -16..15 with
	VSPLITISW on ISA 2.07.
	(integer XXSPLTIB splitter): Add support for QI, HI, and SImode as
	well as DImode.

[gcc/testsuite]
2016-11-10  Michael Meissner  <meissner@linux.vnet.ibm.com>

	* gcc.target/powerpc/vsx-qimode.c: New test for QImode, HImode
	being allowed in vector registers.
	* gcc.target/powerpc/vsx-qimode2.c: Likewise.
	* gcc.target/powerpc/vsx-qimode3.c: Likewise.
	* gcc.target/powerpc/vsx-himode.c: Likewise.
	* gcc.target/powerpc/vsx-himode2.c: Likewise.
	* gcc.target/powerpc/vsx-himode3.c: Likewise.
	* gcc.target/powerpc/p9-extract-1.c: Change MFVSRD to just MFVSR,
	to allow matching MFVSRD or MFVSRW.

From-SVN: r242048
      Michael Meissner committed
    • re PR rtl-optimization/78241 (wrong code with -funroll-loops) · 8d34bfa8 
      	PR rtl-optimization/78241
	* loop-unroll.c (unroll_loop_runtime_iterations): Don't adjust 'niter', but
	emit initial peel copy if niter expr is not reliable.

	* gcc.dg/pr78241.c: New test.

From-SVN: r242047
      Pat Haugen committed
    • dwarf2cfi: Dump row differences before asserting · a1566696 
      If maybe_record_trace_start fails because the CFI is inconsistent on two
paths into a block it currently just ICEs.  This changes it to also dump
the CFI on those two paths in the dump file; debugging it without that
information is hopeless.


	* dwarf2cfi.c (dump_cfi_row): Add forward declaration.
	(maybe_record_trace_start): If the CFI is different on the new and
	old paths, print out both to the dump file before ICEing.

From-SVN: r242046
      Segher Boessenkool committed