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2020-11-08ira: Recompute regstat as max_regno changes [PR97705]Kewen Lin1-7/+20
As PR97705 shows, the commit r11-4637 caused some dumping comparison difference error on pass ira. It exposed one issue about the newly introduced function remove_scratches, which can increase the largest pseudo reg number if it succeeds, later some function will use the max_reg_num() to get the latest max_regno, when iterating the numbers we can access some data structures which are allocated as the previous max_regno, some out of array bound accesses can occur, the failure can be random since the values beyond the array could be random. This patch is to free/reinit/recompute the relevant data structures that is regstat_n_sets_and_refs and reg_info_p to ensure we won't access beyond some array bounds. Bootstrapped/regtested on powerpc64le-linux-gnu P9 and powerpc64-linux-gnu P8. gcc/ChangeLog: PR rtl-optimization/97705 * ira.c (ira): Refactor some regstat free/init/compute invocation into lambda function regstat_recompute_for_max_regno, and call it when max_regno increases as remove_scratches succeeds.
2020-11-09Daily bump.GCC Administrator6-1/+45
2020-11-08Objective-C/C++ : Handle parsing @property 'class' attribute.Iain Sandoe7-21/+53
This attribute states that a property is one manipulated by class methods (it requires a static variable and the setter and getter must be provided explicitly, they cannot be @synthesized). gcc/c-family/ChangeLog: * c-common.h (OBJC_IS_PATTR_KEYWORD): Add class to the list of keywords accepted in @property attribute contexts. * c-objc.h (enum objc_property_attribute_group): Add OBJC_PROPATTR_GROUP_CLASS. (enum objc_property_attribute_kind): Add OBJC_PROPERTY_ATTR_CLASS. gcc/cp/ChangeLog: * parser.c (cp_parser_objc_at_property_declaration): Handle class keywords in @property attribute context. gcc/objc/ChangeLog: * objc-act.c (objc_prop_attr_kind_for_rid): Handle class attribute. (objc_add_property_declaration): Likewise. * objc-act.h (PROPERTY_CLASS): Record class attribute state. gcc/testsuite/ChangeLog: * obj-c++.dg/property/at-property-4.mm: Test handling class attributes. * objc.dg/property/at-property-4.m: Likewise.
2020-11-08testsuite, Darwin, PPC : Skip zero scratch regs tests.Iain Sandoe4-4/+4
XFAIL-ing these is not sufficient, unfortunately, we need to skip them completely. gcc/testsuite/ChangeLog: * c-c++-common/zero-scratch-regs-10.c: Skip for powerpc Darwin. * c-c++-common/zero-scratch-regs-11.c: Likewise. * c-c++-common/zero-scratch-regs-8.c: Likewise. * c-c++-common/zero-scratch-regs-9.c: Likewise.
2020-11-08testsuite, Darwin, X86 : Add target requires native tls to test.Iain Sandoe1-0/+1
The builtin_thread_pointer test does not work for emulated TLS. Add a target requires to cover this. gcc/testsuite/ChangeLog: * gcc.target/i386/builtin_thread_pointer.c: Require native TLS.
2020-11-07rs6000: Fix bootstrap after r11-4793.David Edelsohn1-1/+2
The patch omitted a change for rs6000.c, fixed thus. gcc/ChangeLog: * config/rs6000/rs6000.c (rs6000_mangle_decl_assembler_name): Change DECL_IS_BUILTIN -> DECL_IS_UNDECLARED_BUILTIN.
2020-11-08Daily bump.GCC Administrator7-1/+86
2020-11-07testsuite: Fix Wimplicit-fallthrough-20.c.Marek Polacek1-3/+3
The r11-4813 patch removed "ignored" from the dg-warnings in this test, causing this test to fail when compiled as C++. gcc/testsuite/ChangeLog: * c-c++-common/Wimplicit-fallthrough-20.c: Adjust dg-warning.
2020-11-07Objective-C/C++ (C-family) : Add missing 'atomic' property attribute.Iain Sandoe5-9/+17
This is the default, but it is still legal in user code and therefore we should handle it in parsing. Fix whitespace issues in the lines affected. gcc/c-family/ChangeLog: * c-common.c (c_common_reswords): Add 'atomic' property attribute. * c-common.h (enum rid): Add RID_PROPATOMIC for atomic property attributes. gcc/objc/ChangeLog: * objc-act.c (objc_prop_attr_kind_for_rid): Handle RID_PROPATOMIC. gcc/testsuite/ChangeLog: * obj-c++.dg/property/at-property-4.mm: Test atomic property attribute. * objc.dg/property/at-property-4.m: Likewise.
2020-11-07Objective-C : Implement NSObject attribute.Iain Sandoe5-7/+207
This attribute allows pointers to be marked as pointers to an NSObject-compatible object. This allows for additional checking of assignment etc. when refering to pointers to opaque types. gcc/c-family/ChangeLog: * c-attribs.c (handle_nsobject_attribute): New. * c.opt: Add WNSObject-attribute. gcc/objc/ChangeLog: * objc-act.c (objc_compare_types): Handle NSObject type attributes. (objc_type_valid_for_messaging): Likewise. gcc/testsuite/ChangeLog: * obj-c++.dg/attributes/nsobject-01.mm: New test. * objc.dg/attributes/nsobject-01.m: New test.
2020-11-07Fix Ada build failure for the SuSE PowerPC64/Linux compilerEric Botcazou1-1/+6
gcc/ada/ChangeLog: * gcc-interface/Makefile.in: Force target_cpu to powerpc if the nominal target is powerpc64-suse-linux.
2020-11-07testsuite, Darwin, PPC : XFAIL zero-scratch-regs tests.Iain Sandoe4-0/+4
These tests fail because of an unimplemented 'sorry'; there is no plan to implement this in the short term, so XFAILing the tests to reduce noise. gcc/testsuite/ChangeLog: * c-c++-common/zero-scratch-regs-10.c: XFAIL for powerpc-darwin. * c-c++-common/zero-scratch-regs-11.c: Likewise. * c-c++-common/zero-scratch-regs-8.c: Likewise. * c-c++-common/zero-scratch-regs-9.c: Likewise.
2020-11-07Ada : Fix bootstrap after r11-4793.Iain Sandoe1-1/+1
The patch omitted a change for Ada, fixed thus. gcc/ada/ChangeLog: * gcc-interface/misc.c (gnat_printable_name): Change DECL_IS_BUILTIN -> DECL_IS_UNDECLARED_BUILTIN.
2020-11-07C Parser: Implement mixing of labels and code.Martin Uecker19-90/+188
Implement mixing of labels and code as adopted for C2X and process some std-attributes on labels. 2020-11-06 Martin Uecker <muecker@gwdg.de> gcc/ * doc/extend.texi: Document mixing labels and code. * doc/invoke.texi: Likewise. gcc/c/ * c-parser.c (c_parser_label): Implement mixing of labels and code. (c_parser_all_labels): Likewise. gcc/testsuite/ * c-c++-common/attr-fallthrough-2.c: Update compiler flags. * c-c++-common/Wimplicit-fallthrough-20.c: Adapt test. * gcc.dg/20031223-1.c: Update compiler flags and adapt test. * gcc.dg/c11-labels-1.c: New test. * gcc.dg/c11-labels-2.c: New test. * gcc.dg/c11-labels-3.c: New test. * gcc.dg/c2x-attr-syntax-3.c: Adapt test. * gcc.dg/c2x-labels-1.c: New test. * gcc.dg/c2x-labels-2.c: New test. * gcc.dg/c2x-labels-3.c: New test. * gcc.dg/decl-9.c: Update compiler flags and add error. * gcc.dg/gomp/barrier-2.c: Update compiler flags and add warning. * gcc.dg/gomp/declare-simd-5.c: Update compiler flags and adapt test. * gcc.dg/gomp/declare-variant-2.c: Update compiler flags and add error. * gcc.dg/label-compound-stmt-1.c: Update compiler flags. * gcc.dg/parse-decl-after-label.c: Update compiler flags.
2020-11-07Daily bump.GCC Administrator10-1/+612
2020-11-06rs6000: Don't use operands[] for temporaries in define_expandSegher Boessenkool1-12/+6
In ac001f5ce604 Alan fixed my thinko using operands that do not refer to anything mentioned in the RTL pattern. Instead, it just uses fresh new local rtxes for those. This patch takes that a tiny bit further: it uses local rtx for all temporaries used in the expanders. As a bonus that simplifies the code a tiny bit as well. 2020-11-06 Segher Boessenkool <segher@kernel.crashing.org> * config/rs6000/rs6000.md (@tablejump<mode>_normal): Don't abuse operands[]. (@tablejump<mode>_nospec): Ditto.
2020-11-06rs6000: Use the correct minimized testcasePeter Bergner1-222/+43
Use the correct minimized test case source rather than the large test source. gcc/testsuite/ * gcc.target/powerpc/pr64505.c: Run everywhere. Use correct minimized test case.
2020-11-06rs6000: Fix default alignment ABI break caused by MMA base supportPeter Bergner3-2/+47
As part of the MMA base support, we incremented BIGGEST_ALIGNMENT in order to align the __vector_pair and __vector_quad types to 256 and 512 bytes respectively. This had the unintended effect of changing the default alignment used by __attribute__ ((__aligned__)) which causes an ABI break because of some dodgy code in GLIBC's struct pthread. The fix is to revert the BIGGEST_ALIGNMENT change and to force the alignment on the type itself rather than the mode used by the type. 2020-11-06 Peter Bergner <bergner@linux.ibm.com> gcc/ * config/rs6000/rs6000.h (BIGGEST_ALIGNMENT): Revert previous commit so as not to break the ABI. * config/rs6000/rs6000-call.c (rs6000_init_builtins): Set the ABI mandated alignment for __vector_pair and __vector_quad types. gcc/testsuite/ * gcc.target/powerpc/mma-alignment.c: New test.
2020-11-06Fix stack pointer handling in ms_hook_prologue functions for i386 target.Jeff Law4-2/+20
gcc/ PR target/91489 * config/i386/i386.md (simple_return): Also check for ms_hook_prologue function attribute. * config/i386/i386.c (ix86_can_use_return_insn_p): Also check for ms_hook_prologue function attribute. * config/i386/i386-protos.h (ix86_function_ms_hook_prologue): Declare. gcc/testsuite PR target/91489 * gcc.target/i386/ms_hook_prologue.c: Expand testcase to reproduce PR target/91489 issue.
2020-11-06rs6000: Fix TARGET_POWERPC64 vs. TARGET_64BIT confusionSegher Boessenkool1-2/+2
I gave Ke Wen bad advice, luckily David corrected me: it is true that we cannot use TARGET_POWERPC64 on many 32-bit OSes, since either the kernel or userland does not save the top half of the 64-bit integer registers, but we do not have to care about that in separate patterns or related code. The flag is automatically not enabled by default on targets that do not handle this correctly. This patch fixes it. Segher 2020-11-06 Segher Boessenkool <segher@kernel.crashing.org> PR target/96933 * config/rs6000/rs6000.c (rs6000_expand_vector_init): Use TARGET_POWERPC64 instead of TARGET_64BIT.
2020-11-06builtins: Add DFP signaling NaN built-in functionsJoseph Myers7-0/+128
Add built-in functions __builtin_nansd32, __builtin_nansd64 and __builtin_nansd128 to return signaling NaNs of decimal floating-point types, analogous to the functions already present for binary floating-point types. This patch, independent of <https://gcc.gnu.org/pipermail/gcc-patches/2020-October/557136.html> (pending review), is in preparation for adding the <float.h> macros for such signaling NaNs that are in C2x, analogous to the macros for other types that are in that patch. Bootstrapped with no regressions for x86_64-pc-linux-gnu. Also ran the new tests for powerpc64le-linux-gnu to confirm they do work in the case (hardware DFP) where floating-point exceptions are supported for DFP. gcc/ 2020-11-06 Joseph Myers <joseph@codesourcery.com> * builtins.def (BUILT_IN_NANSD32, BUILT_IN_NANSD64) (BUILT_IN_NANSD128): New built-in functions. * fold-const-call.c (fold_const_call): Handle the new built-in functions. * doc/extend.texi (__builtin_nansd32, __builtin_nansd64) (__builtin_nansd128): Document. * doc/sourcebuild.texi (Effective-Target Keywords): Document fenv_exceptions_dfp. gcc/testsuite/ 2020-11-06 Joseph Myers <joseph@codesourcery.com> * lib/target-supports.exp (check_effective_target_fenv_exceptions_dfp): New. * gcc.dg/dfp/builtin-snan-1.c, gcc.dg/dfp/builtin-snan-2.c: New tests.
2020-11-06c++: Small tweak to can_convert_eh [PR81660]Marek Polacek4-8/+39
While messing with check_handlers_1, I spotted this bug report which complains that we don't warn about the case when we have two duplicated handlers of type int. can_convert_eh implements [except.handle] and that says: A handler is a match for an exception object of type E if - The handler is of type cv T or cv T& and E and T are the same type (ignoring the top-level cv-qualifiers), or [...] but we don't implement this bullet properly for non-class types. The fix therefore seems pretty obvious. Also change the return type to bool when we're only returning yes/no. gcc/cp/ChangeLog: PR c++/81660 * except.c (can_convert_eh): Change the return type to bool. If the type TO and FROM are the same, return true. gcc/testsuite/ChangeLog: PR c++/81660 * g++.dg/warn/Wexceptions3.C: New test. * g++.dg/eh/pr42859.C: Add dg-warning. * g++.dg/torture/pr81659.C: Likewise.
2020-11-06Improve uninitialized warning with value range infoBin Cheng1-63/+129
Function use_pred_not_overlap_with_undef_path_pred of pass_late_warn_uninitialized checks if predicate of variable use overlaps with predicate of undefined control flow path. For now, it only checks ssa_var comparing against constant, this can be improved where ssa_var compares against another ssa_var with value range info, as described in comment: + /* Check value range info of rhs, do following transforms: + flag_var < [min, max] -> flag_var < max + flag_var > [min, max] -> flag_var > min + + We can also transform LE_EXPR/GE_EXPR to LT_EXPR/GT_EXPR: + flag_var <= [min, max] -> flag_var < [min, max+1] + flag_var >= [min, max] -> flag_var > [min-1, max] + if no overflow/wrap. */ gcc/ * tree-ssa-uninit.c (find_var_cmp_const): New function. (use_pred_not_overlap_with_undef_path_pred): Call above.
2020-11-06Objective-C/C++ : Allow visibility prefix attributes on interfaces.Iain Sandoe1-2/+4
This passes visibiliy through without warning (so that, for example, __attribute__((__visibility("default"))) does not result in any diagnostic). gcc/objc/ChangeLog: * objc-act.c (start_class): Accept visibility attributes without warning.
2020-11-06Objective-C/C++ (parsers) : Update @property attribute parsing.Iain Sandoe14-394/+598
At present, we are missing parsing and checking for around half of the property attributes in use. The existing ad hoc scheme for the parser's communication with the Objective C validation is not suitable for extending to cover all the missing cases. Additionally: 1/ We were declaring errors in two cases that the reference implementation warns (or is silent). I've elected to warn for both those cases, (Wattributes) it could be that we should implement Wobjc-xxx-property warning masks (TODO). 2/ We were emitting spurious complaints about missing property attributes when these were not being parsed because we gave up on the first syntax error. 3/ The quality of the diagnostic locations was poor (that's true for much of Objective-C, we will have to improve it as we modernise areas). We continue to attempt to keep the code, warning and error output similar (preferably identical output) between the C and C++ front ends. The interface to the Objective-C-specific parts of the parsing is simplified to a vector of parsed (but not fully-checked) property attributes, this will simplify the addition of new attributes. gcc/c-family/ChangeLog: * c-objc.h (enum objc_property_attribute_group): New (enum objc_property_attribute_kind): New. (OBJC_PROPATTR_GROUP_MASK): New. (struct property_attribute_info): Small class encapsulating parser output from property attributes. (objc_prop_attr_kind_for_rid): New (objc_add_property_declaration): Simplify interface. * stub-objc.c (enum rid): Dummy type. (objc_add_property_declaration): Simplify interface. (objc_prop_attr_kind_for_rid): New. gcc/c/ChangeLog: * c-parser.c (c_parser_objc_at_property_declaration): Improve parsing fidelity. Associate better location info with @property attributes. Clean up the interface to objc_add_property_declaration (). gcc/cp/ChangeLog: * parser.c (cp_parser_objc_at_property_declaration): Improve parsing fidelity. Associate better location info with @property attributes. Clean up the interface to objc_add_property_declaration (). gcc/objc/ChangeLog: * objc-act.c (objc_prop_attr_kind_for_rid): New. (objc_add_property_declaration): Adjust to consume the parser output using a vector of parsed attributes. gcc/testsuite/ChangeLog: * obj-c++.dg/property/at-property-1.mm: Adjust expected diagnostics. * obj-c++.dg/property/at-property-29.mm: Likewise. * obj-c++.dg/property/at-property-4.mm: Likewise. * obj-c++.dg/property/property-neg-2.mm: Likewise. * objc.dg/property/at-property-1.m: Likewise. * objc.dg/property/at-property-29.m: Likewise. * objc.dg/property/at-property-4.m: Likewise. * objc.dg/property/at-property-5.m: Likewise. * objc.dg/property/property-neg-2.m: Likewise.
2020-11-06c++: Propagate attributes to clones in duplicate_decls [PR67453]Jakub Jelinek2-0/+25
On the following testcase where the cdtor attributes aren't on the in-class declaration but on an out-of-class definition, the cdtors have their clones created from the in-class declaration, and later on duplicate_decls updates attributes on the abstract cdtors, but nothing propagates them to the clones. 2020-11-06 Jakub Jelinek <jakub@redhat.com> PR c++/67453 * decl.c (duplicate_decls): Propagate DECL_ATTRIBUTES and DECL_PRESERVE_P from olddecl to its clones if any. * g++.dg/ext/attr-used-2.C: New test.
2020-11-06Darwin: Darwin 20 is to be macOS 11 (Big Sur).Iain Sandoe3-12/+18
As per Nigel Tufnel's assertion "... this one goes to 11". The various parts of the code that deal with mapping Darwin versions to macOS (X) versions need updating to deal with a major version of 11. So now we have, for example: Darwin 4 => macOS (X) 10.0 … Darwin 14 => macOS (X) 10.10 ... Darwin 19 => macOS (X) 10.15 Darwin 20 => macOS 11.0 Because of the historical duplication of the "10" in macOSX 10.xx and the number of tools that expect this, it is likely that system tools will allow macos11.0 and/or macosx11.0 (despite that the latter makes little sense). Update the link test to cover Catalina (Darwin19/10.15) and Big Sur (Darwin20/11.0). gcc/ChangeLog: * config/darwin-c.c: Allow for Darwin20 to correspond to macOS 11. * config/darwin-driver.c: Likewise. gcc/testsuite/ChangeLog: * gcc.dg/darwin-minversion-link.c: Allow for Darwin19 (macOS 10.15) and Darwin20 (macOS 11.0).
2020-11-06rework PRE PHI translation cacheRichard Biener1-36/+68
Turns out its size and time requirements can be stripped down dramatically. 2020-11-06 Richard Biener <rguenther@suse.de> * tree-ssa-pre.c (expr_pred_trans_d): Modify so elements are embedded rather than allocated. Remove hashval member, make all members integers. (phi_trans_add): Adjust accordingly. (phi_translate): Likewise. Deal with re-allocation of the table.
2020-11-06Combine new calculated ranges with existing range.Andrew MacLeod3-2/+41
When a range is recalculated, retain what was previously known as IL changes can produce different results from un-executed code. This also paves the way for external injection of ranges. gcc/ PR tree-optimization/97737 PR tree-optimization/97741 * gimple-range.cc: (gimple_ranger::range_of_stmt): Intersect newly calculated ranges with the existing known global range. gcc/testsuite/ * gcc.dg/pr97737.c: New. * gcc.dg/pr97741.c: New.
2020-11-06Add PC as control registerDarius Galis2-0/+9
gcc/ * config/rx/rx.md (CTRLREG_PC): Add. * config/rx/rx.c (CTRLREG_PC): Add (rx_expand_builtin_mvtc): Add warning: PC register cannot be used as dest.
2020-11-06core: Rename DECL_IS_BUILTIN -> DECL_IS_UNDECLARED_BUILTINNathan Sidwell22-63/+62
In cleaning up C++'s handling of hidden decls, I renamed its DECL_BUILTIN_P, which checks for loc == BUILTINS_LOCATION to DECL_UNDECLARED_BUILTIN_P, because the location gets updated, if user source declares the builtin, and the predicate no longer holds. The original name was confusing me. (The builtin may still retain builtin properties in the redeclaration, and other predicates can still detect that.) I discovered that tree.h had its own variant 'DECL_IS_BUILTIN', which behaves in (almost) the same manner. And therefore has the same mutating behaviour. This patch deletes the C++ one, and renames tree.h's to DECL_IS_UNDECLARED_BUILTIN, to emphasize its non-constantness. I guess _IS_ wins over _P gcc/ * tree.h (DECL_IS_BUILTIN): Rename to ... (DECL_IS_UNDECLARED_BUILTIN): ... here. No need to use SOURCE_LOCUS. * calls.c (maybe_warn_alloc_args_overflow): Adjust for rename. * cfgexpand.c (pass_expand::execute): Likewise. * dwarf2out.c (base_type_die, is_naming_typedef_decl): Likewise. * godump.c (go_decl, go_type_decl): Likewise. * print-tree.c (print_decl_identifier): Likewise. * tree-pretty-print.c (dump_generic_node): Likewise. * tree-ssa-ccp.c (pass_post_ipa_warn::execute): Likewise. * xcoffout.c (xcoff_assign_fundamental_type_number): Likewise. gcc/c-family/ * c-ada-spec.c (collect_ada_nodes): Rename DECL_IS_BUILTIN->DECL_IS_UNDECLARED_BUILTIN. (collect_ada_node): Likewise. (dump_forward_type): Likewise. * c-common.c (set_underlying_type): Rename DECL_IS_BUILTIN->DECL_IS_UNDECLARED_BUILTIN. (user_facing_original_type, c_common_finalize_early_debug): Likewise. gcc/c/ * c-decl.c (diagnose_mismatched_decls): Rename DECL_IS_BUILTIN->DECL_IS_UNDECLARED_BUILTIN. (warn_if_shadowing, implicitly_declare, names_builtin_p) (collect_source_refs): Likewise. * c-typeck.c (inform_declaration, inform_for_arg) (convert_for_assignment): Likewise. gcc/cp/ * cp-tree.h (DECL_UNDECLARED_BUILTIN_P): Delete. * cp-objcp-common.c (names_bultin_p): Rename DECL_IS_BUILTIN->DECL_IS_UNDECLARED_BUILTIN. * decl.c (decls_match): Likewise. Replace DECL_UNDECLARED_BUILTIN_P with DECL_IS_UNDECLARED_BUILTIN. (duplicate_decls): Likewise. * decl2.c (collect_source_refs): Likewise. * name-lookup.c (anticipated_builtin_p, print_binding_level) (do_nonmember_using_decl): Likewise. * pt.c (builtin_pack_fn_p): Likewise. * typeck.c (error_args_num): Likewise. gcc/lto/ * lto-symtab.c (lto_symtab_merge_decls_1): Rename DECL_IS_BUILTIN->DECL_IS_UNDECLARED_BUILTIN. gcc/go/ * go-gcc.cc (Gcc_backend::call_expression): Rename DECL_IS_BUILTIN->DECL_IS_UNDECLARED_BUILTIN. libcc1/ * libcc1plugin.cc (address_rewriter): Rename DECL_IS_BUILTIN->DECL_IS_UNDECLARED_BUILTIN. * libcp1plugin.cc (supplement_binding): Likewise.
2020-11-06aarch64: Use intrinsics for upper saturating shift rightDavid Candler9-258/+854
The use of vqshrn_high_n_s32 was triggering an unneeded register move, because sqshrn2 is destructive but was declared as inline assembly in arm_neon.h. This patch implements sqshrn2 and uqshrn2 as actual intrinsics which do not trigger the unnecessary move, along with new tests to cover them. gcc/ChangeLog 2020-11-06 David Candler <david.candler@arm.com> * config/aarch64/aarch64-builtins.c (TYPES_SHIFT2IMM): Add define. (TYPES_SHIFT2IMM_UUSS): Add define. (TYPES_USHIFT2IMM): Add define. * config/aarch64/aarch64-simd.md (aarch64_<sur>q<r>shr<u>n2_n<mode>): Add new insn for upper saturating shift right. * config/aarch64/aarch64-simd-builtins.def: Add intrinsics. * config/aarch64/arm_neon.h: (vqrshrn_high_n_s16): Expand using intrinsic rather than inline asm. (vqrshrn_high_n_s32): Likewise. (vqrshrn_high_n_s64): Likewise. (vqrshrn_high_n_u16): Likewise. (vqrshrn_high_n_u32): Likewise. (vqrshrn_high_n_u64): Likewise. (vqrshrun_high_n_s16): Likewise. (vqrshrun_high_n_s32): Likewise. (vqrshrun_high_n_s64): Likewise. (vqshrn_high_n_s16): Likewise. (vqshrn_high_n_s32): Likewise. (vqshrn_high_n_s64): Likewise. (vqshrn_high_n_u16): Likewise. (vqshrn_high_n_u32): Likewise. (vqshrn_high_n_u64): Likewise. (vqshrun_high_n_s16): Likewise. (vqshrun_high_n_s32): Likewise. (vqshrun_high_n_s64): Likewise. gcc/testsuite/ChangeLog 2020-11-06 David Candler <david.candler@arm.com> * gcc.target/aarch64/advsimd-intrinsics/vqrshrn_high_n.c: New testcase. * gcc.target/aarch64/advsimd-intrinsics/vqrshrun_high_n.c: Likewise. * gcc.target/aarch64/advsimd-intrinsics/vqshrn_high_n.c: Likewise. * gcc.target/aarch64/advsimd-intrinsics/vqshrun_high_n.c: Likewise. * gcc.target/aarch64/narrow_high-intrinsics.c: Update expected assembler for sqshrun2, sqrshrun2, sqshrn2, uqshrn2, sqrshrn2 and uqrshrn2.
2020-11-06aarch64: Support permutes on unpacked SVE vectorsRichard Sandiford17-60/+3685
This patch adds support for permuting unpacked SVE vectors using: - DUP - EXT - REV[BHW] - REV - TRN[12] - UZP[12] - ZIP[12] This involves rewriting the REV[BHW] permute code so that the inputs and outputs of the insn pattern have the same mode as the vectors being permuted. This is different from the ACLE form, where the reversal happens within individual elements rather than within groups of multiple elements. The patch does not add a conditional version of REV[BHW]. I'll come back to that once we have partial-vector comparisons and selects. The patch is really just enablement, adding an extra tool to the toolbox. It doesn't bring any significant vectorisation opportunities on its own. However, the patch does have one artificial example that is now vectorised in a better way than before. gcc/ * config/aarch64/aarch64-modes.def (VNx2BF, VNx4BF): Adjust nunits and alignment based on the current VG. * config/aarch64/iterators.md (SVE_ALL, SVE_24, SVE_2, SVE_4): Add partial SVE BF modes. (UNSPEC_REVBHW): New unspec. (Vetype, Vesize, Vctype, VEL, Vel, vwcore, V_INT_CONTAINER) (v_int_container, VPRED, vpred): Handle partial SVE BF modes. (container_bits, Vcwtype): New mode attributes. * config/aarch64/aarch64-sve.md (@aarch64_sve_revbhw_<SVE_ALL:mode><PRED_HSD:mode>): New pattern. (@aarch64_sve_dup_lane<mode>): Extended from SVE_FULL to SVE_ALL. (@aarch64_sve_rev<mode>, @aarch64_sve_<perm_insn><mode>): Likewise. (@aarch64_sve_ext<mode>): Likewise. * config/aarch64/aarch64.c (aarch64_classify_vector_mode): Handle E_VNx2BFmode and E_VNx4BFmode. (aarch64_evpc_rev_local): Base the analysis on the container size instead of the element size. Use the new aarch64_sve_revbhw patterns for SVE. (aarch64_evpc_dup): Handle partial SVE data modes. Use the container size instead of the element size when applying the SVE immediate limit. Fix a previously incorrect bounds check. (aarch64_expand_vec_perm_const_1): Handle partial SVE data modes. gcc/testsuite/ * gcc.target/aarch64/sve/dup_lane_2.c: New test. * gcc.target/aarch64/sve/dup_lane_3.c: Likewise. * gcc.target/aarch64/sve/ext_4.c: Likewise. * gcc.target/aarch64/sve/rev_2.c: Likewise. * gcc.target/aarch64/sve/revhw_1.c: Likewise. * gcc.target/aarch64/sve/revhw_2.c: Likewise. * gcc.target/aarch64/sve/slp_perm_8.c: Likewise. * gcc.target/aarch64/sve/trn1_2.c: Likewise. * gcc.target/aarch64/sve/trn2_2.c: Likewise. * gcc.target/aarch64/sve/uzp1_2.c: Likewise. * gcc.target/aarch64/sve/uzp2_2.c: Likewise. * gcc.target/aarch64/sve/zip1_2.c: Likewise. * gcc.target/aarch64/sve/zip2_2.c: Likewise.
2020-11-06Add -fbit-tests option.Martin Liska5-1/+45
gcc/ChangeLog: * common.opt: Add new -fbit-tests option. * doc/invoke.texi: Document the option. * tree-switch-conversion.c (bit_test_cluster::find_bit_tests): Use the option. * tree-switch-conversion.h (is_enabled): New function. gcc/testsuite/ChangeLog: * gcc.dg/tree-ssa/switch-4.c: New test.
2020-11-06make PRE constant value IDs negativeRichard Biener3-34/+69
This separates constant and non-constant value-ids to allow for a more efficient constant_value_id_p and for more efficient bit-packing inside the bitmap sets which never contain any constant values. There's further optimization opportunities but at this stage I'll do small refactorings. 2020-11-06 Richard Biener <rguenther@suse.de> * tree-ssa-sccvn.h (get_max_constant_value_id): Declare. (get_next_constant_value_id): Likewise. (value_id_constant_p): Inline and simplify. * tree-ssa-sccvn.c (constant_value_ids): Remove. (next_constant_value_id): Add. (get_or_alloc_constant_value_id): Adjust. (value_id_constant_p): Remove definition. (get_max_constant_value_id): Define. (get_next_value_id): Add assert for overflow. (get_next_constant_value_id): Define. (run_rpo_vn): Adjust. (free_rpo_vn): Likewise. (do_rpo_vn): Initialize next_constant_value_id. * tree-ssa-pre.c (constant_value_expressions): New. (add_to_value): Split into constant/non-constant value handling. Avoid exact re-allocation. (vn_valnum_from_value_id): Adjust. (phi_translate_1): Remove spurious exact re-allocation. (bitmap_find_leader): Adjust. Make sure we return a CONSTANT value for a constant value id. (do_pre_regular_insertion): Use 2 auto-elements for avail. (do_pre_partial_partial_insertion): Likewise. (init_pre): Allocate constant_value_expressions. (fini_pre): Release constant_value_expressions.
2020-11-06tree-optimization/97706 - handle PHIs in pattern recog mask precisonRichard Biener2-35/+135
This adds handling of PHIs to mask precision compute which is eventually needed to detect a bool pattern when the def chain contains such a PHI node. 2020-11-06 Richard Biener <rguenther@suse.de> PR tree-optimization/97706 * tree-vect-patterns.c (possible_vector_mask_operation_p): PHIs are possible mask operations. (vect_determine_mask_precision): Handle PHIs. (vect_determine_precisions): Walk PHIs in BB analysis. * gcc.dg/vect/bb-slp-pr97706.c: New testcase.
2020-11-06c++: Parser tweaksNathan Sidwell1-3/+7
We need to adjust the wording for 'export'. Between c++11 and c++20 it is deprecated. Outside those ranges it is unsupported (at the moment). While here, there's also an unneeded setting of a bool -- it's inside an if block that just checked it was true. gcc/cp/ * parser.c (cp_parser_template_declaration): Adjust 'export' warning. (cp_parser_explicit_specialization): Remove unneeded bool setting.
2020-11-06testsuite: fix malloc alignment in testKewen Lin1-1/+7
gcc/testsuite/ChangeLog: PR gcov-profile/97461 * gcc.dg/tree-prof/pr97461.c: Return aligned memory.
2020-11-06[Fortran] Remove OpenACC 'loop' inside 'parallel' special-case codeThomas Schwinge2-49/+12
Instead, use the generic middle-end code, like already used for Fortran OpenACC 'loop' inside other compute constructs, orphaned 'loop' constructs, and C, C++ generally. gcc/fortran/ * openmp.c (oacc_is_parallel, resolve_oacc_params_in_parallel): Remove. (resolve_oacc_loop_blocks): Don't call the former. gcc/testsuite/ * gfortran.dg/goacc/loop-2-parallel-3.f95: Adjust.
2020-11-06Remove 'gfortran.dg/goacc/loop-6.f95'Thomas Schwinge1-74/+0
What it's testing is adequately covered in other 'gfortran.dg/goacc/loop-2-parallel-*.f95' testcases. gcc/testsuite/ * gfortran.dg/goacc/loop-6.f95: Remove.
2020-11-06Remove 'gfortran.dg/goacc/loop-5.f95'Thomas Schwinge1-357/+0
What it's testing is adequately covered in other 'gfortran.dg/goacc/loop-2-*-tile.f95' testcases. gcc/testsuite/ * gfortran.dg/goacc/loop-5.f95: Remove.
2020-11-06refactor SLP analysisRichard Biener1-60/+45
This passes down the graph entry kind down to vect_analyze_slp_instance which simplifies it and makes it a shallow wrapper around vect_build_slp_instance. 2020-11-06 Richard Biener <rguenther@suse.de> * tree-vect-slp.c (vect_analyze_slp): Pass down the SLP graph entry kind. (vect_analyze_slp_instance): Simplify. (vect_build_slp_instance): Adjust. (vect_slp_check_for_constructors): Perform more eligibility checks here.
2020-11-06Move ipa-refs from ggc to heap.Jan Hubicka5-29/+24
gcc/ChangeLog: * ipa-ref.h (enum ipa_ref_use): Remove GTY marker. (struct ipa_ref): Remove GTY marker; reorder for better packing. (struct ipa_ref_list): Remove GTY marker; turn references nad referring to va_heap, vl_ptr vectors; update accesors. * cgraph.h (symtab_node::iterate_reference): Update. * ipa-ref.c (ipa_ref::remove_reference): Update. * symtab.c (symtab_node::create_reference): Update. (symtab_node::remove_all_references): Update. (symtab_node::resolve_alias): Update. gcc/cp/ChangeLog: * tree.c (cp_fix_function_decl_p): Do not access ipa_ref_list dirrectly.
2020-11-06ipa-modref: Fix comment typosJakub Jelinek2-19/+19
2020-11-06 Jakub Jelinek <jakub@redhat.com> * ipa-modref-tree.h: Fix comment typos. * ipa-modref.c: Likewise.
2020-11-06IBM Z: Remove override of inline paramsAndreas Krebbel1-7/+0
We have pretty aggressive values for inline-min-speedup and max-inline-insns-auto. This unfortunately made more maybe uninitialized warnings to appear when building on Z. With the patch we go back to the default values. gcc/ChangeLog: * config/s390/s390.c (s390_option_override_internal): Remove override of inline params.
2020-11-06tree-optimization/97706 - part one, refactor vect_determine_mask_precisionRichard Biener1-80/+81
This computes vect_determine_mask_precision in a RPO forward walk rather than in a backward walk and using a worklist. It will make fixing PR97706 easier but for bisecting I wanted it to be separate. 2020-11-06 Richard Biener <rguenther@suse.de> PR tree-optimization/97706 * tree-vect-patterns.c (vect_determine_mask_precision): Remove worklist operation. (vect_determine_stmt_precisions): Do not call vect_determine_mask_precision here. (vect_determine_precisions): Compute mask precision in a forward walk.
2020-11-06OpenACC/Fortran: Reject '!$acc atomic update capture'Tobias Burnus4-5/+122
gcc/fortran/ChangeLog: * openmp.c (gfc_match_oacc_atomic): No longer accept 'update capture'. gcc/testsuite/ChangeLog: * gfortran.dg/goacc-gomp/goacc-gomp.exp: New. * gfortran.dg/goacc-gomp/atomic.f90: New test. * gfortran.dg/goacc/atomic.f90: New test.
2020-11-06OpenACC (C/C++): Fix 'acc atomic' parsingTobias Burnus4-10/+110
gcc/c/ChangeLog: * c-parser.c (c_parser_omp_atomic): Add openacc parameter and update OpenACC matching. (c_parser_omp_construct): Update call. gcc/cp/ChangeLog: * parser.c (cp_parser_omp_atomic): Add openacc parameter and update OpenACC matching. (cp_parser_omp_construct): Update call. gcc/testsuite/ChangeLog: * c-c++-common/goacc-gomp/atomic.c: New test. * c-c++-common/goacc/atomic.c: New test.
2020-11-06tree-optimization/97732 - fix init of SLP induction vectorizationRichard Biener3-1/+16
This PR exposes two issues - one that the vector builder treats &x as eligible for VECTOR_CST elements and one that SLP induction vectorization forgets to convert init elements to the vector component type which makes a difference for pointer vs. integer. 2020-11-06 Richard Biener <rguenther@suse.de> PR tree-optimization/97732 * tree-vect-loop.c (vectorizable_induction): Convert the init elements to the vector component type. * gimple-fold.c (gimple_build_vector): Use CONSTANT_CLASS_P rather than TREE_CONSTANT to determine if elements are eligible for VECTOR_CSTs. * gcc.dg/vect/bb-slp-pr97732.c: New testcase.
2020-11-06Add dg-require-profiling directives to gcc.target/i386 testsOlivier Hainque6-0/+6
This patch adds /* { dg-require-profiling "-pg" } */ to a few tests in gcc.target/i386 that use -pg explicitly, to prevent them from failing during runs for VxWorks targets. 2020-10-29 Olivier Hainque <hainque@adacore.com> gcc/testsuite/ * gcc.target/i386/fentryname1.c: Add dg-require-profiling. * gcc.target/i386/fentryname2.c: Likewise. * gcc.target/i386/fentryname3.c: Likewise. * gcc.target/i386/returninst1.c: Likewise. * gcc.target/i386/returninst2.c: Likewise. * gcc.target/i386/returninst3.c: Likewise.
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