2015-08-13 Richard Biener <rguenther@suse.de>
PR tree-optimization/67191
* tree-ssa-sccvn.c (sccvn_dom_walker::before_dom_children): Remove
assert we value-numbered last stmts operand because it can validly
trigger for unreachable code.
* gcc.dg/torture/pr67191.c: New testcase.
* g++.dg/torture/pr67191.C: Likewise.
From-SVN: r226854
2015-08-12 Richard Biener <rguenther@suse.de>
* tree-ssa-sccvn.c (vn_nary_op_compute_hash): Also canonicalize
comparison operand order and commutative ternary op operand order.
(sccvn_dom_walker::cond_stack): New state to track temporary
expressions.
(sccvn_dom_walker::after_dom_children): Remove tempoary expressions
no longer valid.
(sccvn_dom_walker::record_cond): Add a single temporary conditional
expression.
(sccvn_dom_walker::record_conds): Add a temporary conditional
expressions and all related expressions also true/false.
(sccvn_dom_walker::before_dom_children): Record temporary
expressions based on the controlling condition of a single
predecessor. When trying to simplify a conditional statement
lookup expressions we might have inserted earlier.
* testsuite/gcc.dg/tree-ssa/ssa-fre-47.c: New testcase.
* testsuite/gcc.dg/tree-ssa/ssa-fre-48.c: Likewise.
* testsuite/gcc.dg/tree-ssa/ssa-fre-49.c: Likewise.
* testsuite/g++.dg/tree-ssa/pr61034.C: Adjust.
* testsuite/gcc.dg/fold-compare-2.c: Likewise.
* testsuite/gcc.dg/pr50763.c: Likewise.
* testsuite/gcc.dg/predict-3.c: Likewise.
* testsuite/gcc.dg/tree-ssa/20030709-2.c: Likewise.
* testsuite/gcc.dg/tree-ssa/pr19831-3.c: Likewise.
* testsuite/gcc.dg/tree-ssa/pr20657.c: Likewise.
* testsuite/gcc.dg/tree-ssa/pr21001.c: Likewise.
* testsuite/gcc.dg/tree-ssa/pr37508.c: Likewise.
* testsuite/gcc.dg/tree-ssa/vrp04.c: Likewise.
* testsuite/gcc.dg/tree-ssa/vrp07.c: Likewise.
* testsuite/gcc.dg/tree-ssa/vrp09.c: Likewise.
* testsuite/gcc.dg/tree-ssa/vrp16.c: Likewise.
* testsuite/gcc.dg/tree-ssa/vrp20.c: Likewise.
* testsuite/gcc.dg/tree-ssa/vrp25.c: Likewise.
* testsuite/gcc.dg/tree-ssa/vrp87.c: Likewise.
From-SVN: r226852
2015-08-13 Richard Biener <rguenther@suse.de>
PR tree-optimization/66502
PR tree-optimization/67167
* tree-ssa-sccvn.c (vn_phi_compute_hash): Do not include
backedge arguments.
(vn_phi_lookup): Adjust.
(vn_phi_insert): Likewise.
(visit_phi): Prefer to value-number to another PHI node
over value-numbering to a PHI argument.
(init_scc_vn): Mark DFS back edges.
* gcc.dg/tree-ssa/ssa-fre-46.c: New testcase.
From-SVN: r226850
Between the lowering and flattening passes of the compiler, there are
several passes that modify the lowered Go parse tree and as errors are
discovered, several nodes transform into error nodes. However, for a
higher level node such as a construction expression, the erroneous
nodes in the subtrees might not propagate their error. The flatten
phase for a node now looks for errors in the subtree and flattens the
node into an error node if any are found.
Fixesgolang/go#11559, golang/go#11536, golang/go#11558.
Reviewed-on: https://go-review.googlesource.com/13097
From-SVN: r226845
[gcc]
2015-08-12 Michael Meissner <meissner@linux.vnet.ibm.com>
PR target/67071
* config/rs6000/predicates.md (easy_vector_constant_vsldoi): New
predicate to allow construction of vector constants using the
VSLDOI vector shift instruction.
* config/rs6000/rs6000-protos.h (vspltis_shifted): Add
declaration.
* config/rs6000/rs6000.c (vspltis_shifted): New function to return
the number of bytes to be shifted left and filled in with either
all zero or all one bits.
(gen_easy_altivec_constant): Call vsplitis_shifted if no other
methods exist.
(output_vec_const_move): On power8, generate XXLORC to generate
a vector constant with all 1's. Do a split if we need to use a
VSLDOI instruction.
* config/rs6000/rs6000.h (EASY_VECTOR_MSB): Use mode mask to
properly test for the MSB.
* config/rs6000/altivec.md (VSLDOI splitter): Add splitter for
vector constants that can be created with VSLDOI.
[gcc/testsuite]
2015-08-12 Michael Meissner <meissner@linux.vnet.ibm.com>
PR target/67071
* gcc.target/powerpc/pr67071-1.c: New file to test PR 67071 new
vector constants.
* gcc.target/powerpc/pr67071-2.c: Likewise.
* gcc.target/powerpc/pr67071-3.c: Likewise.
From-SVN: r226836
PR c++/67108
* decl2.c (c_parse_final_cleanups): Set at_eof to 2 at end.
* error.c (dump_template_bindings): Don't tsubst in that case.
From-SVN: r226829
With support from assembler this option allows compiling huge functions,
where single literal pool at the beginning of a function may not be
reachable by L32R instructions at its end.
Currently assembler --auto-litpools option cannot deal with literals
used from multiple locations separated by more than 256 KBytes of code.
Don't turn constants into literals, instead use MOVI instruction to load
them into registers and let the assembler turn them into literals as
necessary.
2015-08-12 Max Filippov <jcmvbkbc@gmail.com>
gcc/
* config/xtensa/constraints.md (define_constraint "Y"): New
constraint.
* config/xtensa/elf.h (ASM_SPEC): Add m(no-)auto-litpools.
* config/xtensa/linux.h (ASM_SPEC): Likewise.
* config/xtensa/predicates.md (move_operand): Match constants
and symbols in the presence of TARGET_AUTO_LITPOOLS.
* config/xtensa/xtensa.c (xtensa_valid_move): Don't allow
immediate references to TLS data.
(xtensa_emit_move_sequence): Don't force constants to memory in
the presence of TARGET_AUTO_LITPOOLS.
(print_operand): Add 'y' format, same as default, but capable of
printing SF mode constants as well.
* config/xtensa/xtensa.md (movsi_internal, movhi_internal)
(movsf_internal): Add movi pattern that loads literal.
(movsf, movdf): Don't force constants to memory in the presence
of TARGET_AUTO_LITPOOLS.
(movdf_internal): Add 'Y' constraint.
* config/xtensa/xtensa.opt (mauto-litpools): New option.
* doc/invoke.text (Xtensa options): Document -mauto-litpools.
From-SVN: r226828
When parsing a malformed array type, i.e. invalid length, gccgo
would loop indefinitely based off of a uninitialized length variable.
Fixesgolang/go#11539.
Reviewed-on: https://go-review.googlesource.com/13066
From-SVN: r226825
libstdc++-v3/ChangeLog:
2015-08-11 Caroline Tice <cmtice@google.com>
PR 66521, Contributed by Eric Gallager
* acinclude.m4 (VTV_CXXLINKFLAGS): Make this variable OS-specific, and
fix the rpath flag to work properly for darwin.
* configure: Regenerated.
From-SVN: r226820
2015-08-12 Richard Biener <rguenther@suse.de>
* tree-ssa-sccvn.c (vn_nary_op_compute_hash): Also canonicalize
comparison operand order and commutative ternary op operand order.
(sccvn_dom_walker::cond_stack): New state to track temporary
expressions.
(sccvn_dom_walker::after_dom_children): Remove tempoary expressions
no longer valid.
(sccvn_dom_walker::record_cond): Add a single temporary conditional
expression.
(sccvn_dom_walker::record_conds): Add a temporary conditional
expressions and all related expressions also true/false.
(sccvn_dom_walker::before_dom_children): Record temporary
expressions based on the controlling condition of a single
predecessor. When trying to simplify a conditional statement
lookup expressions we might have inserted earlier.
* gcc.dg/tree-ssa/ssa-fre-47.c: New testcase.
* gcc.dg/tree-ssa/ssa-fre-48.c: Likewise.
* gcc.dg/tree-ssa/ssa-fre-49.c: Likewise.
* g++.dg/tree-ssa/pr61034.C: Adjust.
* gcc.dg/fold-compare-2.c: Likewise.
* gcc.dg/pr50763.c: Likewise.
* gcc.dg/predict-3.c: Likewise.
* gcc.dg/tree-ssa/20030709-2.c: Likewise.
* gcc.dg/tree-ssa/pr19831-3.c: Likewise.
* gcc.dg/tree-ssa/pr20657.c: Likewise.
* gcc.dg/tree-ssa/pr21001.c: Likewise.
* gcc.dg/tree-ssa/pr37508.c: Likewise.
* gcc.dg/tree-ssa/vrp04.c: Likewise.
* gcc.dg/tree-ssa/vrp07.c: Likewise.
* gcc.dg/tree-ssa/vrp09.c: Likewise.
* gcc.dg/tree-ssa/vrp16.c: Likewise.
* gcc.dg/tree-ssa/vrp20.c: Likewise.
* gcc.dg/tree-ssa/vrp25.c: Likewise.
* gcc.dg/tree-ssa/vrp87.c: Likewise.
From-SVN: r226814
2015-08-12 Simon Dardis <simon.dardis@imgtec.com>
gcc/
* config/mips/mips.c (mips_store_data_bypass_p): Bring code into
line with comments.
* config/mips/sb1.md: Update usage of mips_store_data_bypass_p.
From-SVN: r226805
2015-08-12 Richard Biener <rguenther@suse.de>
* gimple.h (remove_pointer): New trait.
(GIMPLE_CHECK2): New inline template function.
(gassign::code_): New constant static member.
(is_a_helper<const gassign *>): Add.
(gimple_assign_lhs): Use GIMPLE_CHECK2 in the gimple overload
and forward to a new gassign overload with less checking and a
cheaper way to access the operand.
(gimple_assign_lhs_ptr): Likewise.
(gimple_assign_set_lhs): Likewise.
(gimple_assign_rhs1, gimple_assign_rhs1_ptr, gimple_assign_set_rhs1):
Likewise.
(gimple_assign_rhs2, gimple_assign_rhs2_ptr, gimple_assign_set_rhs2):
Likewise.
(gimple_assign_rhs3, gimple_assign_rhs3_ptr, gimple_assign_set_rhs3):
Likewise.
(gimple_assign_rhs_code): Likewise.
* gimple.c (gassign::code_): Define.
From-SVN: r226802
2015-08-12 Richard Biener <rguenther@suse.de>
* tree-ssa-pre.c (eliminate_dom_walker::before_dom_children):
Eliminate edges marked as not executable by SCCVN.
* tree-ssa-sccvn.c: Include gimple-iterator.h.
(cond_dom_walker): Rename to sccvn_dom_walker.
(sccvn_dom_walker::before_dom_children): Value-number defs
of all stmts.
(run_scc_vn): Remove loop value-numbering all SSA names.
Drop not visited SSA names to varying.
* gcc.dg/tree-ssa/ssa-fre-43.c: Adjust.
From-SVN: r226801
On comments, the specification says
(http://golang.org/ref/spec#Comments): General comments start with the
character sequence /* and continue through the character sequence */.
A general comment containing one or more newlines acts like a newline,
otherwise it acts like a space.
Fixesgolang/go#11528.
Reviewed-on: https://go-review.googlesource.com/13064
From-SVN: r226794
gcc/ChangeLog:
2015-08-11 Manuel López-Ibáñez <manu@gcc.gnu.org>
PR c/66098
PR c/66711
* diagnostic.c (diagnostic_classify_diagnostic): Take -Werror into
account when deciding what was the command-line status.
gcc/testsuite/ChangeLog:
2015-08-11 Manuel López-Ibáñez <manu@gcc.gnu.org>
PR c/66098
PR c/66711
* gcc.dg/pragma-diag-3.c: New test.
* gcc.dg/pragma-diag-4.c: New test.
From-SVN: r226780
