Add a few test-cases that test passing each -misa=sm_xx version and verify that
the proper __PTX_SM__ is defined.
Tested on nvptx.
gcc/testsuite/ChangeLog:
2022-02-25 Tom de Vries <tdevries@suse.de>
* gcc.target/nvptx/sm30.c: New test.
* gcc.target/nvptx/sm35.c: New test.
* gcc.target/nvptx/sm53.c: New test.
* gcc.target/nvptx/sm70.c: New test.
* gcc.target/nvptx/sm75.c: New test.
* gcc.target/nvptx/sm80.c: New test.
ifcvt now passes a CC-mode "comparison" to backends. This patch
simply returns from gen_compare_reg () in that case since nothing
needs to be prepared anymore.
gcc/ChangeLog:
PR rtl-optimization/104154
* config/arc/arc.cc (gen_compare_reg): Return the CC-mode
comparison ifcvt passed us.
For V8HFmode vector init with HFmode, do not directly emits V8HF move
with subreg, which may cause reload to assign general register to move
src.
gcc/ChangeLog:
PR target/104664
* config/i386/i386-expand.cc (ix86_expand_vector_init_duplicate):
Use vec_setv8hf_0 for HF to V8HFmode move instead of subreg.
gcc/testsuite/ChangeLog:
PR target/104664
* gcc.target/i386/pr104664.c: New test.
This patch is my proposed solution to PR tree-optimization/91384 which is
a missed-optimization/code quality regression on x86_64. The problematic
idiom is "if (r = -a)" which is equivalent to both "r = -a; if (r != 0)"
and alternatively "r = -a; if (a != 0)". In this particular case, on
x86_64, we prefer to use the condition codes from the negation, rather
than require an explicit testl instruction.
Unfortunately, combine can't help, as it doesn't attempt to merge pairs
of instructions that share the same operand(s), only pairs/triples of
instructions where the result of each instruction feeds the next. But
I doubt there's sufficient benefit to attempt this kind of "combination"
(that wouldn't already be caught by the tree-ssa passes).
Fortunately, it's relatively easy to fix this up (addressing the
regression) during peephole2 to eliminate the unnecessary testl in:
movl %edi, %ebx
negl %ebx
testl %edi, %edi
je .L2
2022-02-28 Roger Sayle <roger@nextmovesoftware.com>
gcc/ChangeLog
PR tree-optimization/91384
* config/i386/i386.md (peephole2): Eliminate final testl insn
from the sequence *movsi_internal, *negsi_1, *cmpsi_ccno_1 by
transforming using *negsi_2 for the negation.
gcc/testsuite/ChangeLog
PR tree-optimization/91384
* gcc.target/i386/pr91384.c: New test case.
This patch fixes PR middle-end/80270, an ICE-on-valid regression, where
performing a bitfield extraction on a variable explicitly stored in a
hard register by the user causes a segmentation fault during RTL
expansion. Nearly identical source code without the "asm" qualifier
compiles fine. The point of divergence is in simplify_gen_subreg
which tries to avoid creating non-trivial SUBREGs of hard registers,
to avoid problems during register allocation. This suggests the
simple solution proposed here, to copy hard registers to a new pseudo
in extract_integral_bit_field, just before calling simplify_gen_subreg.
2022-02-28 Roger Sayle <roger@nextmovesoftware.com>
Eric Botcazou <ebotcazou@adacore.com>
gcc/ChangeLog
PR middle-end/80270
* expmed.cc (extract_integral_bit_field): If OP0 is a hard
register, copy it to a pseudo before calling simplify_gen_subreg.
gcc/testsuite/ChangeLog
* gcc.target/i386/pr80270.c: New test case.
LRA hard reg split subpass is a small subpass used as the last
resort for LRA when it can not assign a hard reg to a reload
pseudo by other ways (e.g. by spilling non-reload pseudos). For
simplicity the subpass works on one split base (as each split
changes pseudo live range info). In this case it results in
reaching maximal possible number of subpasses. The patch
implements as many non-overlapping hard reg splits
splits as possible on each subpass.
gcc/ChangeLog:
PR rtl-optimization/104637
* lra-assigns.cc (lra_split_hard_reg_for): Split hard regs as many
as possible on one subpass.
gcc/testsuite/ChangeLog:
PR rtl-optimization/104637
* gcc.target/i386/pr104637.c: New.
When looking into the other PR I noticed that we fail to give a warning
for a deprecated enumerator when the enum is in a class template. This
only happens when the attribute doesn't have an argument. The reason is
that when we tsubst_enum, we create a new enumerator:
build_enumerator (DECL_NAME (decl), value, newtag,
DECL_ATTRIBUTES (decl), DECL_SOURCE_LOCATION (decl));
but DECL_ATTRIBUTES (decl) is null when the attribute was provided
without an argument -- in that case it simply melts into a tree flag.
handle_deprecated_attribute has:
if (!args)
*no_add_attrs = true;
so the attribute isn't retained and we lose it when tsubsting. Same
thing when the attribute is on the enum itself.
Attribute unavailable is a similar case, but it's different in that
it can be a late attribute whereas "deprecated" can't:
is_late_template_attribute has
/* But some attributes specifically apply to templates. */
&& !is_attribute_p ("abi_tag", name)
&& !is_attribute_p ("deprecated", name)
&& !is_attribute_p ("visibility", name))
return true;
else
return false;
which looks strange, but attr-unavailable-9.C tests that we don't error when
the attribute is applied on a template.
PR c++/104682
gcc/cp/ChangeLog:
* cp-tree.h (build_enumerator): Adjust.
* decl.cc (finish_enum): Make it return the new decl.
* pt.cc (tsubst_enum): Propagate TREE_DEPRECATED and TREE_UNAVAILABLE.
gcc/testsuite/ChangeLog:
* g++.dg/ext/attr-unavailable-10.C: New test.
* g++.dg/ext/attr-unavailable-11.C: New test.
* g++.dg/warn/deprecated-17.C: New test.
* g++.dg/warn/deprecated-18.C: New test.
When processing a template, the enumerators we build don't have a type
yet. But is_late_template_attribute is not prepared to see a _DECL
without a type, so we crash on
enum tree_code code = TREE_CODE (type);
(I found that we don't give the "is deprecated" warning for the enumerator
'f' in the test. Reported as PR104682.)
PR c++/104667
gcc/cp/ChangeLog:
* decl2.cc (is_late_template_attribute): Cope with a decl without
a type.
gcc/testsuite/ChangeLog:
* g++.dg/ext/attrib64.C: New test.
__builtin_clear_padding(&object) will clear all the padding bits of the object.
actually, it doesn't involve any use of an user variable. Therefore, users do
not expect any uninitialized warning from it. It's reasonable to suppress
uninitialized warnings for all new created uses from __builtin_clear_padding
folding.
PR middle-end/104550
gcc/ChangeLog:
* gimple-fold.cc (clear_padding_flush): Suppress warnings for new
created uses.
gcc/testsuite/ChangeLog:
* gcc.dg/auto-init-pr104550-1.c: New test.
* gcc.dg/auto-init-pr104550-2.c: New test.
* gcc.dg/auto-init-pr104550-3.c: New test.
PR ipa/104648
gcc/ChangeLog:
* main.cc (main): Use flag_checking instead of CHECKING_P
and run toplev::finalize only if there is not error seen.
gcc/testsuite/ChangeLog:
* g++.dg/pr104648.C: New test.
The following reverts a part of the PR103037 fix which is no longer necessary
after the fix for PR104700. That makes the possible cummulative backport
smaller.
2022-02-28 Richard Biener <rguenther@suse.de>
* tree-ssa-pre.cc (compute_avail): Revert part of last change.
The following refactors find_or_generate_expression to more properly
handle constant valued SSA names thereby simplifying the code and
avoiding ICEing after the last change to NARY processing.
2022-02-28 Richard Biener <rguenther@suse.de>
PR tree-optimization/104700
* tree-ssa-pre.cc (get_or_alloc_expr_for): Remove and inline
into ...
(find_or_generate_expression): ... here, simplifying code.
* gcc.dg/pr104700-2.c: New testcase.
* gcc.dg/torture/pr104700-1.c: Likewise.
When running with target board unix/-foffload=-mptx=3.1, we run into:
...
lto1: error: PTX version (-mptx) needs to be at least 4.2 to support \
selected -misa (sm_53)^M
mkoffload: fatal error: x86_64-pc-linux-gnu-accel-nvptx-none-gcc returned \
1 exit status^M
compilation terminated.^M
...
FAIL: libgomp.c/declare-variant-3-sm53.c (test for excess errors)
...
Fix this by adding -foffload=-mptx=_ in the libgomp.c/declare-variant-3-sm*.c
test-cases.
Tested on x86_64 with nvptx accelerator.
libgomp/ChangeLog:
2022-02-28 Tom de Vries <tdevries@suse.de>
* testsuite/libgomp.c/declare-variant-3-sm30.c: Add -foffload=-mptx=_.
* testsuite/libgomp.c/declare-variant-3-sm35.c: Same.
* testsuite/libgomp.c/declare-variant-3-sm53.c: Same.
* testsuite/libgomp.c/declare-variant-3-sm70.c: Same.
* testsuite/libgomp.c/declare-variant-3-sm75.c: Same.
* testsuite/libgomp.c/declare-variant-3-sm80.c: Same.
When running with target board nvptx-none-run/-mptx=3.1, I run into:
...
cc1: error: PTX version (-mptx) needs to be at least 4.2 to support selected \
-misa (sm_53)^M
compiler exited with status 1
FAIL: gcc.target/nvptx/atomic-store-1.c (test for excess errors)
...
Fix this and similar cases by adding an explicit -mptx=_ setting.
Tested on nvptx.
gcc/testsuite/ChangeLog:
2022-02-28 Tom de Vries <tdevries@suse.de>
* gcc.target/nvptx/atomic-store-1.c: Add -mptx=_.
* gcc.target/nvptx/atomic-store-2.c: Same.
* gcc.target/nvptx/float16-1.c: Same.
* gcc.target/nvptx/float16-2.c: Same.
* gcc.target/nvptx/float16-3.c: Same.
* gcc.target/nvptx/float16-4.c: Same.
* gcc.target/nvptx/float16-5.c: Same.
* gcc.target/nvptx/float16-6.c: Same.
* gcc.target/nvptx/tanh-1.c: Same.
* gcc.target/nvptx/uniform-simt-1.c: Same.
* gcc.target/nvptx/uniform-simt-3.c: Same.
Add an -mptx=_ value, that indicates the default ptx version.
It can be used to undo an explicit -mptx setting, so this:
...
$ gcc test.c -mptx=3.1 -mptx=_
...
has the same effect as:
...
$ gcc test.c
...
Tested on nvptx.
gcc/ChangeLog:
2022-02-28 Tom de Vries <tdevries@suse.de>
* config/nvptx/nvptx-opts.h (enum ptx_version): Add
PTX_VERSION_default.
* config/nvptx/nvptx.cc (handle_ptx_version_option): Handle
PTX_VERSION_default.
* config/nvptx/nvptx.opt: Add EnumValue "_" / PTX_VERSION_default.
When running with target board nvptx-none-run/-misa=sm_70 I run into:
...
FAIL: gcc.target/nvptx/atomic-store-3.c scan-assembler-times st.global.u32 1
FAIL: gcc.target/nvptx/atomic-store-3.c scan-assembler-times st.global.u64 1
...
Fix this by adding an explicit -misa=sm_30 in the test-case.
Tested on nvptx.
gcc/testsuite/ChangeLog:
2022-02-28 Tom de Vries <tdevries@suse.de>
* gcc.target/nvptx/atomic-store-3.c: Add -misa=sm_30.
When running with target board nvptx-none-run/-misa=sm_53 we run into:
...
cc1: error: PTX version (-mptx) needs to be at least 4.2 to support selected \
-misa (sm_53)^M
compiler exited with status 1
FAIL: gcc.target/nvptx/uniform-simt-2.c (test for excess errors)
...
Fix this by adding an explicit -misa=sm_30 in the test-case.
Tested on nvptx.
gcc/testsuite/ChangeLog:
2022-02-28 Tom de Vries <tdevries@suse.de>
* gcc.target/nvptx/uniform-simt-2.c: Add -misa=sm_30.
When running with target board nvptx-none-run/-misa=sm_30 we run into:
...
FAIL: gcc.target/nvptx/rotate.c scan-assembler-times shf.l.wrap.b32 1
FAIL: gcc.target/nvptx/rotate.c scan-assembler-times shf.r.wrap.b32 1
FAIL: gcc.target/nvptx/rotate.c scan-assembler-not and.b32
...
Fix this by adding an explicit -misa=sm_35 in the test-case.
Tested on nvptx.
gcc/testsuite/ChangeLog:
2022-02-28 Tom de Vries <tdevries@suse.de>
* gcc.target/nvptx/rotate.c: Add -misa=sm_35.
The following replaces
/* Skip bits that are zero. */
for (; (word & 1) == 0; word >>= 1)
bit_num++;
idioms in ira-int.h in the attempt to speedup update_conflict_hard_regno_costs
which we're bound on in PR104686. The trick is to use ctz_hwi here
which should pay off even with dense bitmaps on architectures that
have HW support for this.
For the PR in question this speeds up compile-time from 31s to 24s for
me.
2022-02-25 Richard Biener <rguenther@suse.de>
PR rtl-optimization/104686
* ira-int.h (minmax_set_iter_cond): Use ctz_hwi to elide loop
skipping bits that are zero.
(ira_object_conflict_iter_cond): Likewise.
Sync with llvm change in https://reviews.llvm.org/D120307 to
add enumeration and truncate imm to unsigned char, so users could
use ~ on immediates.
gcc/ChangeLog:
* config/i386/avx512fintrin.h (_MM_TERNLOG_ENUM): New enum.
(_mm512_ternarylogic_epi64): Truncate imm to unsigned
char to avoid error when using ~enum as parameter.
(_mm512_mask_ternarylogic_epi64): Likewise.
(_mm512_maskz_ternarylogic_epi64): Likewise.
(_mm512_ternarylogic_epi32): Likewise.
(_mm512_mask_ternarylogic_epi32): Likewise.
(_mm512_maskz_ternarylogic_epi32): Likewise.
* config/i386/avx512vlintrin.h (_mm256_ternarylogic_epi64):
Adjust imm param type to unsigned char.
(_mm256_mask_ternarylogic_epi64): Likewise.
(_mm256_maskz_ternarylogic_epi64): Likewise.
(_mm256_ternarylogic_epi32): Likewise.
(_mm256_mask_ternarylogic_epi32): Likewise.
(_mm256_maskz_ternarylogic_epi32): Likewise.
(_mm_ternarylogic_epi64): Likewise.
(_mm_mask_ternarylogic_epi64): Likewise.
(_mm_maskz_ternarylogic_epi64): Likewise.
(_mm_ternarylogic_epi32): Likewise.
(_mm_mask_ternarylogic_epi32): Likewise.
(_mm_maskz_ternarylogic_epi32): Likewise.
gcc/testsuite/ChangeLog:
* gcc.target/i386/avx512f-vpternlogd-1.c: Use new enum.
* gcc.target/i386/avx512f-vpternlogq-1.c: Likewise.
* gcc.target/i386/avx512vl-vpternlogd-1.c: Likewise.
* gcc.target/i386/avx512vl-vpternlogq-1.c: Likewise.
* gcc.target/i386/testimm-10.c: Remove imm check for vpternlog
insns since the imm has been truncated in intrinsic.
The patch for PR90451 deferred marking to the point of actual use; we missed
this one because of the parens.
PR c++/104618
gcc/cp/ChangeLog:
* typeck.cc (cp_build_addr_expr_1): Also
maybe_undo_parenthesized_ref.
gcc/testsuite/ChangeLog:
* g++.dg/overload/paren1.C: New test.
The declarations of _DINFINITY, _SINFINITY and _SQNAN need to be constant
expressions.
2022-02-27 John David Anglin <danglin@gcc.gnu.org>
fixincludes/ChangeLog:
* inclhack.def (hpux_math_constexpr): New hack.
* fixincl.x: Regenerate.
* tests/base/math.h: Update.
Mark mentioned in the PR further 2 simplifications that also ICE
with complex types.
For these, eventually (but IMO GCC 13 materials) we could support it
for vector types if it would be uniform vector constants.
Currently integer_pow2p is true only for INTEGER_CSTs and COMPLEX_CSTs
and we can't use bit_and etc. for complex type.
2022-02-25 Jakub Jelinek <jakub@redhat.com>
Marc Glisse <marc.glisse@inria.fr>
PR tree-optimization/104675
* match.pd (t * 2U / 2 -> t & (~0 / 2), t / 2U * 2 -> t & ~1):
Restrict simplifications to INTEGRAL_TYPE_P.
* gcc.dg/pr104675-3.c : New test.
The following testcase ICEs, because for some strange reason it decides to use
movmisaligntf during expansion where the destination is MEM and source is
CONST_DOUBLE. For normal mov<mode> expanders the rs6000 backend uses
rs6000_emit_move to ensure that if one operand is a MEM, the other is a REG
and a few other things, but for movmisalign<mode> nothing enforced this.
The middle-end documents that movmisalign<mode> shouldn't fail, so we can't
force that through predicates or condition on the expander.
2022-02-25 Jakub Jelinek <jakub@redhat.com>
PR target/104681
* config/rs6000/vector.md (movmisalign<mode>): Use rs6000_emit_move.
* g++.dg/opt/pr104681.C: New test.
Both -mforce-drap and -mstackrealign options are x86 specific.
2022-02-25 Jakub Jelinek <jakub@redhat.com>
* g++.dg/pr104540.C: Move to ...
* g++.target/i386/pr104540.C: ... here.
If the movcc comparison is not valid it triggers an assert in the
current implementation. This behavior is not needed as we can FAIL
the movcc expand pattern.
gcc/
* config/arc/arc.cc (gen_compare_reg): Return NULL_RTX if the
comparison is not valid.
* config/arc/arc.md (movsicc): Fail if comparison is not valid.
(movdicc): Likewise.
(movsfcc): Likewise.
(movdfcc): Likewise.
Signed-off-by: Claudiu Zissulescu <claziss@synopsys.com>
This fixes a long-standing issue in PRE where we track valueized
expressions in our expression sets that we use for PHI translation,
code insertion but also feed into match-and-simplify via
vn_nary_simplify. But that's not what is expected from vn_nary_simplify
or match-and-simplify which assume we are simplifying with operands
available at the point of the expression so they can use contextual
information on the SSA names like ranges. While the VN side was
updated to ensure this with the rewrite to RPO VN, thereby removing
all workarounds that nullified such contextual info on all SSA names,
the PRE side still suffers from this.
The following patch tries to apply minimal surgery at this point
and makes PRE track un-valueized expressions in the expression sets
but only for the NARY kind (both NAME and CONSTANT do not suffer
from this issue), leaving the REFERENCE kind alone. The REFERENCE
kind is important when trying to remove the workarounds still in
place in compute_avail for code hoisting, but that's a separate issue
and we have a working workaround in place.
Doing this comes at the cost of duplicating the VN IL on the PRE side
for NARY and eventually some extra overhead for translated expressions
that is difficult to assess.
2022-02-25 Richard Biener <rguenther@suse.de>
PR tree-optimization/103037
* tree-ssa-sccvn.h (alloc_vn_nary_op_noinit): Declare.
(vn_nary_length_from_stmt): Likewise.
(init_vn_nary_op_from_stmt): Likewise.
(vn_nary_op_compute_hash): Likewise.
* tree-ssa-sccvn.cc (alloc_vn_nary_op_noinit): Export.
(vn_nary_length_from_stmt): Likewise.
(init_vn_nary_op_from_stmt): Likewise.
(vn_nary_op_compute_hash): Likewise.
* tree-ssa-pre.cc (pre_expr_obstack): New obstack.
(get_or_alloc_expr_for_nary): Pass in the value-id to use,
(re-)compute the hash value and if the expression is not
found allocate it from pre_expr_obstack.
(phi_translate_1): Do not insert the NARY found in the
VN tables but build a PRE expression from the valueized
NARY with the value-id we eventually found.
(find_or_generate_expression): Assert we have an entry
for constant values.
(compute_avail): Insert not valueized expressions into
EXP_GEN using the value-id from the VN tables.
(init_pre): Allocate pre_expr_obstack.
(fini_pre): Free pre_expr_obstack.
* gcc.dg/torture/pr103037.c: New testcase.
As mentioned in the PR, the following testcase is miscompiled for similar
reasons as the already fixed PR78791 - we use SLOT_TEMP slots in various
places during expansion and during expansion we can guarantee that the
lifetime of those temporary slot doesn't overlap. But the following
splitter uses SLOT_TEMP too and in between expansion and split1 there is
a possibility that something extends the lifetime of SLOT_TEMP created
slots across an instruction that will be split by this splitter.
The following patch fixes it by using a new temp slot kind to make sure
it doesn't reuse a SLOT_TEMP that could be live across the instruction.
2022-02-25 Jakub Jelinek <jakub@redhat.com>
PR target/104674
* config/i386/i386.h (enum ix86_stack_slot): Add SLOT_FLOATxFDI_387.
* config/i386/i386.md (splitter to floatdi<mode>2_i387_with_xmm): Use
SLOT_FLOATxFDI_387 rather than SLOT_TEMP.
* gcc.target/i386/pr104674.c: New test.
This fixes a spelling mistake I found while looking at warning-control
implementation.
2022-02-25 Jakub Jelinek <jakub@redhat.com>
* warning-control.cc (get_nowarn_spec): Comment spelling fix.
The following testcase is miscompiled on ia32 at -O2, because
when expand_SPACESHIP is called, we have pending stack adjustment
from the foo call right before it.
Now, ix86_expand_fp_spaceship uses emit_jump_insn several times
but then emit_jump also several times. While emit_jump_insn doesn't
do do_pending_stack_adjust (), emit_jump does, so we end up with:
...
8: call [`_Z3foodl'] argc:0x10
REG_CALL_DECL `_Z3foodl'
9: r88:DF=[`a']
10: r89:HI=unspec[cmp(r88:DF,0.0)] 25
11: flags:CC=unspec[r89:HI] 26
12: pc={(unordered(flags:CCFP,0))?L27:pc}
REG_BR_PROB 536868
66: NOTE_INSN_BASIC_BLOCK 4
13: pc={(uneq(flags:CCFP,0))?L19:pc}
REG_BR_PROB 214748364
67: NOTE_INSN_BASIC_BLOCK 5
14: pc={(flags:CCFP>0)?L23:pc}
REG_BR_PROB 536870916
68: NOTE_INSN_BASIC_BLOCK 6
15: r86:SI=0xffffffffffffffff
16: {sp:SI=sp:SI+0x10;clobber flags:CC;}
REG_ARGS_SIZE 0
17: pc=L29
18: barrier
19: L19:
69: NOTE_INSN_BASIC_BLOCK 7
...
The sp += 16 pending stuck adjust was emitted in the middle of the
sequence and is effective only for the single case of the 4 possibilities
where .SPACESHIP returns -1, in all other cases the stack isn't adjusted
and so we ICE during dwarf2cfi.
Now, we could either call do_pending_stack_adjust in
ix86_expand_fp_spaceship, or use there calls that actually don't call
do_pending_stack_adjust (but having the stack adjustment across branches is
generally undesirable), or we can call it in expand_SPACESHIP for all
targets (note, just i386 currently implements it).
I chose the generic code because e.g. expand_{addsub,neg,mul}_overflow
in the same file also call do_pending_stack_adjust in internal-fn.cc for the
same reasons, that it is expected that most if not all targets will expand
those through jumps and we don't want all of the targets to need to deal
with that.
2022-02-25 Jakub Jelinek <jakub@redhat.com>
PR middle-end/104679
* internal-fn.cc (expand_SPACESHIP): Call do_pending_stack_adjust.
* g++.dg/torture/pr104679.C: New test.
We don't support BIT_{AND,IOR,XOR,NOT}_EXPR on complex types,
&/|/^ are just rejected for them, and ~ is parsed as CONJ_EXPR.
So, we should avoid simplifications which turn valid complex type
expressions into something that will ICE during expansion.
2022-02-25 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/104675
* match.pd (-A - 1 -> ~A, -1 - A -> ~A): Don't simplify for
COMPLEX_TYPE.
* gcc.dg/pr104675-1.c: New test.
* gcc.dg/pr104675-2.c: New test.
The patch for PR103302 caused PR104121, and extended the live ranges
of LRA reloads.
for gcc/ChangeLog
PR target/104121
PR target/103302
* expr.cc (emit_move_multi_word): Restore clobbers during LRA.
This problem was already fixed as part of PR104263: the abnormal edge
that remained from before inlining didn't make sense after inlining.
So this patch adds only the testcase.
for gcc/testsuite/ChangeLog
PR tree-optimization/103845
PR tree-optimization/104263
* gcc.dg/pr103845.c: New.
In def_cfa_0, we may set the 2nd operand's dw_cfi_cfa_loc to NULL, but
then cfi_oprnd_equal_p calls cfa_equal_p with a NULL dw_cfa_location*.
This patch aranges for us to tolerate NULL dw_cfi_cfa_loc.
for gcc/ChangeLog
PR middle-end/104540
* dwarf2cfi.cc (cfi_oprnd_equal_p): Cope with NULL
dw_cfi_cfa_loc.
for gcc/testsuite/ChangeLog
PR middle-end/104540
* g++.dg/pr104540.C: New.
When we duplicate a throwing compare for hardening, the EH edge from
the original compare gets duplicated for the inverted compare, but we
failed to adjust any PHI nodes in the EH block. This patch adds the
needed adjustment, copying the PHI args from those of the preexisting
edge.
for gcc/ChangeLog
PR tree-optimization/103856
* gimple-harden-conditionals.cc (non_eh_succ_edge): Enable the
eh edge to be requested through an extra parameter.
(pass_harden_compares::execute): Copy PHI args in the EH dest
block for the new EH edge added for the inverted compare.
for gcc/testsuite/ChangeLog
PR tree-optimization/103856
* g++.dg/pr103856.C: New.
This fixes a problem for Clang, which is going to return a non-void
pointer from __builtin_source_location(). The current definition of
std::source_location::current() converts that to void* and then has to
cast it back again in the body (which makes it invalid in a constant
expression). By using the actual type of the returned pointer, we avoid
the problematic cast for Clang.
libstdc++-v3/ChangeLog:
PR libstdc++/104602
* include/std/source_location (source_location::current): Use
deduced type of __builtin_source_location().
Fortran 2018 allows for a QUIET specifier to the STOP and ERROR STOP
statements. Whilst the gfortran library code provides support for this
specifier for quite some time, the frontend implementation was missing.
gcc/fortran/ChangeLog:
PR fortran/84519
* dump-parse-tree.cc (show_code_node): Dump QUIET specifier when
present.
* match.cc (gfc_match_stopcode): Implement parsing of F2018 QUIET
specifier. F2018 stopcodes may have non-default integer kind.
* resolve.cc (gfc_resolve_code): Add checks for QUIET argument.
* trans-stmt.cc (gfc_trans_stop): Pass QUIET specifier to call of
library function.
gcc/testsuite/ChangeLog:
PR fortran/84519
* gfortran.dg/stop_1.f90: New test.
* gfortran.dg/stop_2.f: New test.
* gfortran.dg/stop_3.f90: New test.
* gfortran.dg/stop_4.f90: New test.
The code generated by -mcmodel=medany is defined to be
position-independent, but is not guaranteed to function correctly when
linked into position-independent executables or libraries. See the
recent discussion at the psABI specification [1] for more details.
It would be better to reject these invalid sequences when linking, but
as pointed out in a recent LD bug [2] there may be some compatibility
issues related to the PCREL_HI20 relocations used to initialize GP.
Given the complexity here it's unlikely we'll be able to reject these
sequences any time soon, so instead just document that these may not
work.
[1]: https://github.com/riscv-non-isa/riscv-elf-psabi-doc/issues/245
[2]: https://sourceware.org/bugzilla/show_bug.cgi?id=28789
gcc/ChangeLog:
* doc/invoke.texi (RISC-V -mcmodel=medany): Document the degree
of position independence that -mcmodel=medany affords.
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
The third parameter of find_fde_tail is an _Unwind_Ptr (which is an
integer type instead of a pointer), but we are passing NULL to it. This
causes a -Wint-conversion warning.
libgcc/
* unwind-dw2-fde-dip.c (_Unwind_Find_FDE): Call find_fde_tail
with 0 instead of NULL.
Fixes:
gcc/cp/pt.cc:13755:23: warning: suggest braces around initialization of subobject [-Wmissing-braces]
tree_vec_map in = { fn, nullptr };
gcc/cp/ChangeLog:
* pt.cc (defarg_insts_for): Use braces for subobject.
This patch changes the build machinery in order to disable the build
of GCOV (both compiler and libgcc) in bpf-*-* targets. The reason for
this change is that BPF is (currently) too restricted in order to
support the coverage instrumentalization.
Tested in bpf-unknown-none and x86_64-linux-gnu targets.
2022-02-23 Jose E. Marchesi <jose.marchesi@oracle.com>
gcc/ChangeLog
PR target/104656
* configure.ac: --disable-gcov if targetting bpf-*.
* configure: Regenerate.
libgcc/ChangeLog
PR target/104656
* configure.ac: --disable-gcov if targetting bpf-*.
* configure: Regenerate.
Loop distribution can release SSA names used in nb_iterations, make
sure to release those.
2022-02-24 Richard Biener <rguenther@suse.de>
PR tree-optimization/104676
* tree-loop-distribution.cc (loop_distribution::execute):
Do a full scev_reset.
* gcc.dg/torture/pr104676.c: New testcase.
