PR tree-optimization/68541
* gimple-ssa-split-paths.c: Include tree-cfg.h and params.h.
(count_stmts_in_block): New function.
(poor_ifcvt_candidate_code): Likewise.
(is_feasible_trace): Add some heuristics to determine when path
splitting is profitable.
(find_block_to_duplicate_for_splitting_paths): Make sure the graph
is a diamond with a single exit.
PR tree-optimization/68541
* gcc.dg/tree-ssa/split-path-2.c: New test.
* gcc.dg/tree-ssa/split-path-3.c: New test.
* gcc.dg/tree-ssa/split-path-4.c: New test.
* gcc.dg/tree-ssa/split-path-5.c: New test.
* gcc.dg/tree-ssa/split-path-6.c: New test.
* gcc.dg/tree-ssa/split-path-7.c: New test.
From-SVN: r233191
gcc/testsuite/ChangeLog:
PR c++/69662
* g++.dg/warn/Wplacement-new-size-1.C: New test.
* g++.dg/warn/Wplacement-new-size-2.C: New test.
gcc/cp/ChangeLog:
PR c++/69662
* init.c (find_field_init): New function.
(warn_placement_new_too_small): Call it. Handle one-element arrays
at ends of structures special.
gcc/c-family/ChangeLog:
PR c++/69662
* c.opt (Warning options): Update -Wplacement-new to take
an optional argument.
gcc/ChangeLog:
PR c++/69662
* doc/invoke.texi: Update -Wplacement-new to take an optional
argument.
From-SVN: r233190
PR c/69643
* tree.c (tree_nop_conversion_p): Do not strip casts into or
out of non-standard address spaces.
testsuite/
* gcc.target/i386/addr-space-4.c: New.
* gcc.target/i386/addr-space-5.c: New.
From-SVN: r233189
PR fortran/66089
gcc/fortran/
* trans-expr.c (expr_is_variable, gfc_expr_is_variable): Rename
the former to the latter and make it non-static. Update callers.
* gfortran.h (gfc_expr_is_variable): New declaration.
(struct gfc_ss_info): Add field needs_temporary.
* trans-array.c (gfc_scalar_elemental_arg_saved_as_argument):
Tighten the condition on aggregate expressions with a check
that the expression is a variable and doesn't need a temporary.
(gfc_conv_resolve_dependency): Add intermediary reference variable.
Set the needs_temporary field.
gcc/testsuite/
* gfortran.dg/elemental_dependency_6.f90: New.
From-SVN: r233188
PR c++/69628
* charset.c (cpp_interpret_charconst): Clear *PCHARS_SEEN
and *UNSIGNEDP if bailing out early due to errors.
* g++.dg/parse/pr69628.C: New test.
From-SVN: r233186
gcc/cp/ChangeLog:
PR c++/68948
* pt.c (tsubst_baselink): Diagnose an invalid constructor call
if lookup_fnfields returns NULL_TREE and the name being looked
up has the form A::A.
gcc/testsuite/ChangeLog:
PR c++/68948
* g++.dg/template/pr68948.C: New test.
From-SVN: r233176
2016-01-05 Jeremy Bennett <jeremy.bennett@embecosm.com>
* doc/invoke.texi (Optimize Options): In table of --param options
rename second occurrence of tracer-min-branch-ratio to
tracer-min-branch-probability, rename
tracer-min-branch-ratio-feedback to
tracer-min-branch-probability-feedback and clarify description,
rename sched-spec-state-edge-prob-cutoff to
sched-state-edge-prob-cutoff, rename selsched-max-insns-to-rename
to selsched-insns-to-rename, rename lto-minpartition to
lto-min-partition, delete reorder-blocks-duplicate and
reorder-blocks-duplicate-feedback.
From-SVN: r233175
The attached patch copies the existing
libstdc++-v3/config/abi/post/s390-linux-gnu/baseline_symbols.txt
to .../s390x-linux-gnu/32/baseline_symbols.txt. This fixes the
abi test failure on s390x with -m31.
libstdc++-v3/ChangeLog
* config/abi/post/s390x-linux-gnu/32/baseline_symbols.txt (FUNC):
New file. Copied over from s390-linux-gnu.
From-SVN: r233170
This fixes a problem revealed during the split-stack work:
https://gcc.gnu.org/ml/gcc-patches/2016-02/msg00322.html
gcc/ChangeLog:
2016-02-05 Andreas Krebbel <krebbel@linux.vnet.ibm.com>
* config/s390/s390.c (s390_emit_call): Add missing 64 bit check.
From-SVN: r233169
This patch fixes a problem introduced with the GPR into FPR slot save
feature for leaf functions.
r6 is argument register as well as call-saved. Currently we might
decide that it will be a candidate for being saved into an FPR. If it
turns out later that r6 also needs to be saved due to being required
for vararg we undo the FPR save decision and put it on the stack
again. Unfortunately the code did not adjust the GPR restore range
accordingly so that the register does not get restored in the load
multiple.
This fixes the following testcases on s390x:
< FAIL: libgomp.c/doacross-1.c execution test
< FAIL: libgomp.c/doacross-2.c execution test
< FAIL: libgomp.c/doacross-3.c execution test
< FAIL: libgomp.c++/doacross-1.C execution test
gcc/ChangeLog:
2016-02-05 Andreas Krebbel <krebbel@linux.vnet.ibm.com>
PR target/69625
* config/s390/s390.c (SAVE_SLOT_NONE, SAVE_SLOT_STACK): New
defines.
(s390_register_info_gprtofpr): Use new macros above.
(s390_register_info_stdarg_fpr): Adjust max_fpr to better match
its name.
(s390_register_info_stdarg_gpr): Adjust max_gpr to better match
its name. Adjust restore and save gpr ranges.
(s390_register_info_set_ranges): New function.
(s390_register_info): Use new macros above. Call
s390_register_info_set_ranges.
(s390_optimize_register_info): Likewise.
(s390_hard_regno_rename_ok): Use new macros.
(s390_hard_regno_scratch_ok): Likewise.
(s390_emit_epilogue): Likewise.
(s390_can_use_return_insn): Likewise.
(s390_optimize_prologue): Likewise.
* config/s390/s390.md (GPR2_REGNUM, GPR6_REGNUM): New constants.
From-SVN: r233168
As it happens the patch I did over a year ago for PR64682 isn't quite
correct. This is PR69567. This fixes it.
PR rtl-optimization/64682
PR rtl-optimization/69567
* combine.c (distribute_notes) <REG_DEAD>: Place the death note
before I2 only if the register is both used and set in I2.
From-SVN: r233159
PR c/69669
* c-decl.c (finish_enum): When honoring mode attribute,
make sure to use proper TYPE_MIN_VALUE and TYPE_MAX_VALUE.
* c-c++-common/pr69669.c: New test.
From-SVN: r233154
* doc/xml/manual/containers.xml: Add cross-reference to Dual ABI.
* doc/xml/manual/spine.xml: Update copyright years and author blurb.
* doc/html/*: Regenerate.
From-SVN: r233150
[gcc]
2016-02-04 Michael Meissner <meissner@linux.vnet.ibm.com>
PR target/69667
* config/rs6000/rs6000.md (mov<mode>_64bit_dm): Use 'd' constraint
instead of 'ws', and 'wh' instead of 'wm' since TFmode/IFmode are
not allowed into the traditional Altivec registers.
(movtd_64bit_nodm): Likewise.
(mov<mode>_32bit, FMOVE128_FPR iterator): Likewise.
[gcc/testsuite]
2016-02-04 Michael Meissner <meissner@linux.vnet.ibm.com>
PR target/69667
* g++.dg/pr69667.C: New file.
From-SVN: r233147
This patch fixes an exponential issue in ccmp.c. When deciding which ccmp
expansion to use, the tree nodes gs0 and gs1 are fully expanded twice. If
they contain more CCMP opportunities, their subtrees are also expanded twice.
When the trees are complex the expansion takes exponential time and memory.
As a workaround in GCC6 compute the cost of the first expansion early, and
only try the alternative expansion if the cost is low enough. This rarely
affects real code, eg. SPECINT2006 has identical codesize.
2016-02-04 Wilco Dijkstra <wdijkstr@arm.com>
gcc/
PR target/69619
* ccmp.c (expand_ccmp_expr_1): Avoid evaluating gs0/gs1
twice when complex.
gcc/testsuite/
PR target/69619
* gcc.dg/pr69619.c: Add new test.
From-SVN: r233145
We don't document the -mno-xxx variants for other flags here, and the
paragraph here specifically says "Each has a corresponding -mno- option
to disable use of these instructions". Drop the -mno-fma4 line.
From-SVN: r233144
In PR 69577 we have:
A: (set (reg:V2TI X) ...)
B: (set (subreg:TI (reg:V2TI X) 0) ...)
X gets allocated to an AVX register, as usual for V2TI. The problem is
that the movti for B doesn't then preserve the other half of X, even
though the subreg semantics are supposed to guarantee that.
If instead the same value had been set by:
A': (set (subreg:TI (reg:V2TI X) 16) ...)
B: (set (subreg:TI (reg:V2TI X) 0) ...)
the subreg in A' would have prevented the use of AVX registers for X,
since you can't directly access the high part.
IMO these are really the same thing. An alternative way to view it
is that the original sequence is equivalent to:
A: (set (reg:V2TI X) ...)
B1: (set (subreg:TI (reg:V2TI X) 0) ...)
B2: (set (subreg:TI (reg:V2TI X) 16) (subreg:TI (reg:V2TI X) 16))
in which B2 is a no-op and therefore implicit. The handling ought
to be the same regardless of whether there is an rtl insn that
explicitly assigns to (subreg:TI (reg:V2TI X) 16).
This patch implements that idea. Hopefully the comments explain
what's going on.
Tested on x86_64-linux-gnu, aarch64-linux-gnu and arm-linux-gnueabihf.
gcc/
PR rtl-optimization/69577
* reginfo.c (record_subregs_of_mode): Add a partial_def parameter.
(find_subregs_of_mode): Update accordingly. Iterate over partial
definitions.
gcc/testsuite/
PR rtl-optimization/69577
* gcc.target/i386/pr69577.c: New test.
From-SVN: r233143
PR target/65932
PR target/67714
* gcc.target/arm/wmul-3.c: Simplify test to generate just
a single smulbb instruction.
* gcc.target/amr/wmul-1.c: Add -mtune=cortex-a9 to dg-options.
* gcc.target/amr/wmul-2.c: Likewise.
From-SVN: r233134
PR target/65932
PR target/67714
* config/arm/arm.c (arm_new_rtx_costs, MULT case): Properly extract
the operands of the SIGN_EXTENDs from a SMUL[TB][TB] rtx.
From-SVN: r233132
