Linaro GCC 4.6-2011.06-0

Milestone information

Project:
Linaro GCC
Series:
4.6
Version:
4.6-2011.06-0
Released:
2011-06-16  
Registrant:
Michael Hope
Release registered:
2011-06-16
Active:
No. Drivers cannot target bugs and blueprints to this milestone.  

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Release notes 

Linaro GCC 4.6 is the fourth release in the 4.6 series. Based off the
latest GCC 4.6.0+svn174261, it adds new optimisations and vectoriser
improvements.

Interesting changes include:
 * Updates to 4.6.0+r174261
 * Blocks can now vectorise into ORN and BIC instructions
 * Support for half word to double word multiply and accumulate operations
 * Better support for other widening multiply operations
 * Further performance improvements in NEON strided loads and stores
 * Performance improvements targeted at EEMBC CoreMark

Fixes:
 * PR target/48454: Set the lengths correctly for the case with Quad vectors.

Known issues:
 * Building Python 2.7 with -mfpu=neon exposes a bug in vmov.i64 in binutils 2.20.51. Please use 2.21 or later.

The strided load/store improvements allow the vectoriser to
efficiently access values that occur at every n'th address, such as
all of the red values in a RGB image or all of the left channel
samples in a interleaved audio array. For example, a plain C function
that converts between RGB and CYMK now runs 7.3 x faster on an A9.

The source tarball is available from:
 https://launchpad.net/gcc-linaro/+milestone/4.6-2011.06-0

Downloads are available from the Linaro GCC page on Launchpad:
 https://launchpad.net/gcc-linaro

Mailing list: http://lists.linaro.org/mailman/listinfo/linaro-toolchain

Bugs: https://bugs.launchpad.net/gcc-linaro/

Questions? https://ask.linaro.org/

Interested in commercial support? inquire at support@linaro.org

Changelog 

View the full changelog

2011-06-13 Ramana Radhakrishnan <email address hidden>

 Backport from mainline:
 gcc/
 2011-06-13 Ramana Radhakrishnan <email address hidden>

 PR target/48454
 * config/arm/neon.md (vec_pack_trunc<mode>): Set the lengths
 correctly for the case with Quad vectors.

2011-06-10 Ramana Radhakrishnan <email address hidden>

 Backport from mainline:
 gcc/
        2011-06-02 Ramana Radhakrishnan <email address hidden>
 * config/arm/neon.md (orndi3_neon): Actually split it.

2011-06-10 Ramana Radhakrishnan <email address hidden>

        Backport from mainline.
 gcc/
        2011-05-26 Ramana Radhakrishnan <email address hidden>

 * config/arm/neon.md ("orn<mode>3_neon"): Canonicalize not.
 ("orndi3_neon"): Likewise.
 ("bic<mode>3_neon"): Likewise.

 gcc/testsuite
 2011-05-26 Ramana Radhakrishnan <email address hidden>

 * gcc.target/arm/neon-vorn-vbic.c: New test.

2011-06-07 Andrew Stubbs <email address hidden>

 Backport from FSF:

 2011-06-07 Andrew Stubbs <email address hidden>

 gcc/
 * config/arm/arm.md (*maddhidi4tb, *maddhidi4tt): New define_insns.
 (*maddhisi4tb, *maddhisi4tt): New define_insns.

 gcc/testsuite/
 * gcc.target/arm/smlatb-1.c: New file.
 * gcc.target/arm/smlatt-1.c: New file.
 * gcc.target/arm/smlaltb-1.c: New file.
 * gcc.target/arm/smlaltt-1.c: New file.

2011-06-07 Andrew Stubbs <email address hidden>

 Backport from FSF:

 2011-06-07 Bernd Schmidt <email address hidden>
      Andrew Stubbs <email address hidden>

 gcc/
 * simplify-rtx.c (simplify_unary_operation_1): Canonicalize widening
 multiplies.
 * doc/md.texi (Canonicalization of Instructions): Document widening
 multiply canonicalization.

 gcc/testsuite/
 * gcc.target/arm/mla-2.c: New test.

2001-06-02 Richard Sandiford <email address hidden>

 gcc/
 * gimple.c (gimple_build_call_internal_1): Add missing call to
 gimple_call_reset_alias_info.

2001-06-02 Richard Sandiford <email address hidden>

 gcc/testsuite/
 Backport from mainline:

 2011-05-03 Richard Sandiford <email address hidden>

 * gcc.dg/vect/vect-strided-u16-i3.c: New test.

2001-06-02 Richard Sandiford <email address hidden>

 gcc/testsuite/
 Backport from mainline:

 2011-05-03 Richard Sandiford <email address hidden>

 * lib/target-supports.exp (check_effective_target_vect_strided):
 Replace with...
 (check_effective_target_vect_strided2)
 (check_effective_target_vect_strided3)
 (check_effective_target_vect_strided4)
 (check_effective_target_vect_strided8): ...these new functions.

 * gcc.dg/vect/O3-pr39675-2.c: Update accordingly.
 * gcc.dg/vect/costmodel/ppc/costmodel-slp-12.c: Likewise.
 * gcc.dg/vect/fast-math-slp-27.c: Likewise.
 * gcc.dg/vect/if-cvt-stores-vect-ifcvt-18.c: Likewise.
 * gcc.dg/vect/pr37539.c: Likewise.
 * gcc.dg/vect/slp-11a.c: Likewise.
 * gcc.dg/vect/slp-11b.c: Likewise.
 * gcc.dg/vect/slp-11c.c: Likewise.
 * gcc.dg/vect/slp-12a.c: Likewise.
 * gcc.dg/vect/slp-12b.c: Likewise.
 * gcc.dg/vect/slp-18.c: Likewise.
 * gcc.dg/vect/slp-19a.c: Likewise.
 * gcc.dg/vect/slp-19b.c: Likewise.
 * gcc.dg/vect/slp-21.c: Likewise.
 * gcc.dg/vect/slp-23.c: Likewise.
 * gcc.dg/vect/vect-cselim-1.c: Likewise.

 * gcc.dg/vect/fast-math-vect-complex-3.c: Use vect_stridedN
 instead of vect_interleave && vect_extract_even_odd.
 * gcc.dg/vect/no-scevccp-outer-10a.c: Likewise.
 * gcc.dg/vect/no-scevccp-outer-10b.c: Likewise.
 * gcc.dg/vect/no-scevccp-outer-20.c: Likewise.
 * gcc.dg/vect/vect-1.c: Likewise.
 * gcc.dg/vect/vect-10.c: Likewise.
 * gcc.dg/vect/vect-98.c: Likewise.
 * gcc.dg/vect/vect-107.c: Likewise.
 * gcc.dg/vect/vect-strided-a-mult.c: Likewise.
 * gcc.dg/vect/vect-strided-a-u16-i2.c: Likewise.
 * gcc.dg/vect/vect-strided-a-u16-i4.c: Likewise.
 * gcc.dg/vect/vect-strided-a-u16-mult.c: Likewise.
 * gcc.dg/vect/vect-strided-a-u32-mult.c: Likewise.
 * gcc.dg/vect/vect-strided-a-u8-i2-gap.c: Likewise.
 * gcc.dg/vect/vect-strided-a-u8-i8-gap2.c: Likewise.
 * gcc.dg/vect/vect-strided-a-u8-i8-gap7.c: Likewise.
 * gcc.dg/vect/vect-strided-float.c: Likewise.
 * gcc.dg/vect/vect-strided-mult-char-ls.c: Likewise.
 * gcc.dg/vect/vect-strided-mult.c: Likewise.
 * gcc.dg/vect/vect-strided-same-dr.c: Likewise.
 * gcc.dg/vect/vect-strided-u16-i2.c: Likewise.
 * gcc.dg/vect/vect-strided-u16-i4.c: Likewise.
 * gcc.dg/vect/vect-strided-u32-i4.c: Likewise.
 * gcc.dg/vect/vect-strided-u32-i8.c: Likewise.
 * gcc.dg/vect/vect-strided-u32-mult.c: Likewise.
 * gcc.dg/vect/vect-strided-u8-i2-gap.c: Likewise.
 * gcc.dg/vect/vect-strided-u8-i2.c: Likewise.
 * gcc.dg/vect/vect-strided-u8-i8-gap2.c: Likewise.
 * gcc.dg/vect/vect-strided-u8-i8-gap4.c: Likewise.
 * gcc.dg/vect/vect-strided-u8-i8-gap7.c: Likewise.
 * gcc.dg/vect/vect-strided-u8-i8.c: Likewise.
 * gcc.dg/vect/vect-vfa-03.c: Likewise.

 * gcc.dg/vect/no-scevccp-outer-18.c: Add vect_stridedN to the
 target condition.
 * gcc.dg/vect/pr30843.c: Likewise.
 * gcc.dg/vect/pr33866.c: Likewise.
 * gcc.dg/vect/slp-reduc-6.c: Likewise.
 * gcc.dg/vect/vect-strided-store-a-u8-i2.c: Likewise.
 * gcc.dg/vect/vect-strided-store-u16-i4.c: Likewise.
 * gcc.dg/vect/vect-strided-store-u32-i2.c: Likewise.

2001-06-02 Richard Sandiford <email address hidden>

 gcc/testsuite/
 Backport from mainline:

 2011-05-03 Richard Sandiford <email address hidden>

 * gcc.dg/vect/slp-11.c: Split into...
 * gcc.dg/vect/slp-11a.c, gcc.dg/vect/slp-11b.c,
 gcc.dg/vect/slp-11c.c: ...these tests.
 * gcc.dg/vect/slp-12a.c: Split 4-stride loop into...
 * gcc.dg/vect/slp-12c.c: ...this new test.
 * gcc.dg/vect/slp-19.c: Split into...
 * gcc.dg/vect/slp-19a.c, gcc.dg/vect/slp-19b.c,
 gcc.dg/vect/slp-19c.c: ...these new tests.

2001-06-02 Richard Sandiford <email address hidden>

 gcc/testsuite/
 Backport from mainline:

 2011-05-03 Richard Sandiford <email address hidden>

 * lib/target-supports.exp
 (check_effective_target_vect_extract_even_odd_wide): Delete.
 (check_effective_target_vect_strided_wide): Likewise.
 * gcc.dg/vect/O3-pr39675-2.c: Use the non-wide versions instead.
 * gcc.dg/vect/fast-math-pr35982.c: Likewise.
 * gcc.dg/vect/fast-math-vect-complex-3.c: Likewise.
 * gcc.dg/vect/pr37539.c: Likewise.
 * gcc.dg/vect/slp-11.c: Likewise.
 * gcc.dg/vect/slp-12a.c: Likewise.
 * gcc.dg/vect/slp-12b.c: Likewise.
 * gcc.dg/vect/slp-19.c: Likewise.
 * gcc.dg/vect/slp-23.c: Likewise.
 * gcc.dg/vect/vect-1.c: Likewise.
 * gcc.dg/vect/vect-98.c: Likewise.
 * gcc.dg/vect/vect-107.c: Likewise.
 * gcc.dg/vect/vect-strided-float.c: Likewise.

2001-06-02 Richard Sandiford <email address hidden>

 gcc/testsuite/
 Backport from mainline:

 2011-04-21 Richard Sandiford <email address hidden>

 * gcc.dg/vect/vect.exp: Run the main tests twice, one with -flto
 and once without.

2001-06-02 Richard Sandiford <email address hidden>

 gcc/
 Backport from mainlie:

 2011-05-03 Richard Sandiford <email address hidden>

 * config/arm/neon.md (vec_load_lanes<mode><mode>): New expanders,
 (vec_store_lanes<mode><mode>): Likewise.

2001-06-02 Richard Sandiford <email address hidden>

 gcc/
 Backport from mainline:

 2011-05-03 Richard Sandiford <email address hidden>

 * doc/md.texi (vec_load_lanes, vec_store_lanes): Document.
 * optabs.h (COI_vec_load_lanes, COI_vec_store_lanes): New
 convert_optab_index values.
 (vec_load_lanes_optab, vec_store_lanes_optab): New convert optabs.
 * genopinit.c (optabs): Initialize the new optabs.
 * internal-fn.def (LOAD_LANES, STORE_LANES): New internal functions.
 * internal-fn.c (get_multi_vector_move, expand_LOAD_LANES)
 (expand_STORE_LANES): New functions.
 * tree.h (build_array_type_nelts): Declare.
 * tree.c (build_array_type_nelts): New function.
 * tree-vectorizer.h (vect_model_store_cost): Add a bool argument.
 (vect_model_load_cost): Likewise.
 (vect_store_lanes_supported, vect_load_lanes_supported)
 (vect_record_strided_load_vectors): Declare.
 * tree-vect-data-refs.c (vect_lanes_optab_supported_p)
 (vect_store_lanes_supported, vect_load_lanes_supported): New functions.
 (vect_transform_strided_load): Split out statement recording into...
 (vect_record_strided_load_vectors): ...this new function.
 * tree-vect-stmts.c (create_vector_array, read_vector_array)
 (write_vector_array, create_array_ref): New functions.
 (vect_model_store_cost): Add store_lanes_p argument.
 (vect_model_load_cost): Add load_lanes_p argument.
 (vectorizable_store): Try to use store-lanes functions for
 interleaved stores.
 (vectorizable_load): Likewise load-lanes and loads.
 * tree-vect-slp.c (vect_get_and_check_slp_defs): Update call
 to vect_model_store_cost.
 (vect_build_slp_tree): Likewise vect_model_load_cost.

2001-06-02 Richard Sandiford <email address hidden>

 gcc/
 Backport from mainline:

 2011-04-20 Richard Sandiford <email address hidden>

 * tree-vect-stmts.c (vectorizable_store): Only chain one related
 statement per copy.

2001-06-02 Richard Sandiford <email address hidden>

 gcc/
 * tree-inline.c (estimate_num_insns): Likewise.

 Backport from mainline:

 2011-04-20 Richard Sandiford <email address hidden>

 * Makefile.in (INTERNAL_FN_DEF, INTERNAL_FN_H): Define.
 (GIMPLE_H): Include $(INTERNAL_FN_H).
 (OBJS-common): Add internal-fn.o.
 (internal-fn.o): New rule.
 * internal-fn.def: New file.
 * internal-fn.h: Likewise.
 * internal-fn.c: Likewise.
 * gimple.h: Include internal-fn.h.
 (GF_CALL_INTERNAL): New gf_mask.
 (gimple_statement_call): Put fntype into a union with a new
 internal_fn field.
 (gimple_build_call_internal): Declare.
 (gimple_build_call_internal_vec): Likewise.
 (gimple_call_same_target_p): Likewise.
 (gimple_call_internal_p): New function.
 (gimple_call_internal_fn): Likewise.
 (gimple_call_set_fn): Assert that the function is not internal.
 (gimple_call_set_fndecl): Likewise.
 (gimple_call_set_internal_fn): New function.
 (gimple_call_addr_fndecl): Handle null functions.
 (gimple_call_return_type): Likewise.
 [---- Plus backport adjustments:
 (GF_CALL_INTERNAL_FN_SHIFT): New macro.
 (GF_CALL_INTERNAL_FN): New gf_mask.
 ----]
 * gimple.c (gimple_build_call_internal_1): New function.
 (gimple_build_call_internal): Likewise.
 (gimple_build_call_internal_vec): Likewise.
 (gimple_call_same_target_p): Likewise.
 (gimple_call_flags): Handle calls to internal functions.
 (gimple_call_fnspec): New function.
 (gimple_call_arg_flags, gimple_call_return_flags): Use it.
 (gimple_has_side_effects): Handle null functions.
 (gimple_rhs_has_side_effects): Likewise.
 (gimple_call_copy_skip_args): Handle calls to internal functions.
 * cfgexpand.c (expand_call_stmt): Likewise.
 * expr.c (expand_expr_real_1): Assert that the call isn't internal.
 * gimple-low.c (gimple_check_call_args): Handle calls to internal
 functions.
 * gimple-pretty-print.c (dump_gimple_call): Likewise.
 * ipa-prop.c (ipa_analyze_call_uses): Handle null functions.
 * tree-cfg.c (verify_gimple_call): Handle calls to internal functions.
 (do_warn_unused_result): Likewise.
 [---- Plus backport adjustments:
 (verify_stmt): Likewise.
 ----]
 * tree-eh.c (same_handler_p): Use gimple_call_same_target_p.
 * tree-ssa-ccp.c (ccp_fold_stmt): Handle calls to internal functions.
 [---- Plus backport adjustments:
 (fold_gimple_call): Likewise.
 ----]
 * tree-ssa-dom.c (hashable_expr): Use the gimple statement to record
 the target of a call.
 (initialize_hash_element): Update accordingly.
 (hashable_expr_equal_p): Use gimple_call_same_target_p.
 (iterative_hash_hashable_expr): Handle calls to internal functions.
 (print_expr_hash_elt): Likewise.
 * tree-ssa-pre.c (can_value_number_call): Likewise.
 (eliminate): Handle null functions.
 * tree-ssa-sccvn.c (visit_use): Handle calls to internal functions.
 * tree-ssa-structalias.c (find_func_aliases): Likewise.
 * value-prof.c (gimple_ic_transform): Likewise.
 (gimple_indirect_call_to_profile): Likewise.

2001-06-02 Richard Sandiford <email address hidden>

 gcc/
 Backport from mainline:

 2011-04-14 Richard Sandiford <email address hidden>

 * tree-vectorizer.h (vect_strided_store_supported): Add a
 HOST_WIDE_INT argument.
 (vect_strided_load_supported): Likewise.
 (vect_permute_store_chain): Return void.
 (vect_transform_strided_load): Likewise.
 (vect_permute_load_chain): Delete.
 * tree-vect-data-refs.c (vect_strided_store_supported): Take a
 count argument. Check that the count is a power of two.
 (vect_strided_load_supported): Likewise.
 (vect_permute_store_chain): Return void. Update after above changes.
 Assert that the access is supported.
 (vect_permute_load_chain): Likewise.
 (vect_transform_strided_load): Return void.
 * tree-vect-stmts.c (vectorizable_store): Update calls after
 above interface changes.
 (vectorizable_load): Likewise.
 (vect_analyze_stmt): Don't check for strided powers of two here.

2001-06-02 Richard Sandiford <email address hidden>

 gcc/
 Backport from mainline:

 2011-04-14 Richard Sandiford <email address hidden>

 * tree-vectorizer.h (vect_create_data_ref_ptr): Add an extra
 type parameter.
 * tree-vect-data-refs.c (vect_create_data_ref_ptr): Add an aggr_type
 parameter. Generalise code to handle arrays as well as vectors.
 (vect_setup_realignment): Update accordingly.
 * tree-vect-stmts.c (vectorizable_store): Likewise.
 (vectorizable_load): Likewise.

2001-06-02 Richard Sandiford <email address hidden>

 gcc/
 Backport from mainline:

 2011-04-14 Richard Sandiford <email address hidden>

 * tree-vect-stmts.c (vectorizable_load): Allocate and free dr_chain
 within the per-copy loop.

2001-06-02 Richard Sandiford <email address hidden>

 gcc/
 Backport from mainline:

 2011-04-14 Richard Sandiford <email address hidden>

 * tree-vect-stmts.c (vectorizable_load): Print the number of copies
 in the dump file.

2001-06-02 Richard Sandiford <email address hidden>

 gcc/
 Backport from mainline:

 2011-03-25 Richard Sandiford <email address hidden>

 * config/arm/arm.h (CANNOT_CHANGE_MODE_CLASS): Restrict FPA_REGS
 case to VFPv1.

2011-05-26 Andrew Stubbs <email address hidden>

 Merge from FSF GCC 4.6 (svn branches/gcc-4_6-branch 174261).

2011-06-02 Chung-Lin Tang <email address hidden>

 Backport from mainline:

 2011-03-21 Chung-Lin Tang <email address hidden>

 gcc/
 * simplify-rtx.c (simplify_binary_operation_1): Handle
 (xor (and A B) C) case when B and C are both constants.

 gcc/testsuite/
 * gcc.target/arm/xor-and.c: New.

 2011-03-18 Chung-Lin Tang <email address hidden>

 gcc/
 * combine.c (try_combine): Do simplification only call of
 subst() on i2 even when i1 is present. Update comments.

 gcc/testsuite/
 * gcc.target/arm/unsigned-extend-1.c: New.

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