Re: [PR52983] eliminate autoinc from debug_insn locs

2012-08-01 Thread Alexandre Oliva
On Jul 24, 2012, Alexandre Oliva wrote: > Thanks. I'm about to go on a trip for the rest of the week and I won't > be online much, so I won't check them in now. I will when I get back > home, so that I'll have a better chance of dealing with any fallout. I've just installed the 3 patches. The

Re: PING [PATCH] Fix PR libstdc++/54036, problem negating DFP NaNs

2012-08-01 Thread Peter Bergner
On Wed, 1 Aug 2012 08:24:48 -0700 Janis Johnson wrote: > On 08/01/2012 07:29 AM, Paolo Carlini wrote: > > On 08/01/2012 12:46 AM, Peter Bergner wrote: > >> I'd like to ping the following libstdc++ DFP patch that fixes PR54036: > >> > >>http://gcc.gnu.org/ml/gcc-patches/2012-07/msg00959.html > >

Re: [PATCH 0/2] Convert s390 to atomic optabs, v2

2012-08-01 Thread Richard Henderson
Please try this as a followup to the previous two patches. That should clean up the mistake with the insv change. r~ commit 6b07a31943bcbca2a4f6fae707cf3d7ae283d4dc Author: Richard Henderson Date: Wed Aug 1 16:10:37 2012 -0700 fixup insv diff --git a/gcc/config/s390/s390.c b/gcc/config/s

Re: [PATCH][7/n] into-SSA TLC

2012-08-01 Thread Tom de Vries
On 01/08/12 10:47, Richard Guenther wrote: > * tree-ssa-tail-merge.c (release_last_vdef): Remove. > (replace_block_by): Adjust. > (tail_merge_optimize): Use mark_virtual_operands_for_renaming. Richard, this caused PR50672 to trigger again. Thanks, - Tom

Re: [PATCH 1/2] m32c: Don't use set_optab_handler

2012-08-01 Thread DJ Delorie
I tried to test this, but newlib won't build (looks unrelated). The failure is this assert in expmed.h: gcc_assert (to_mode >= MIN_MODE_INT && to_mode <= MAX_MODE_INT && from_mode >= MIN_MODE_INT && from_mode <= MAX_MODE_INT); which can't possibly wo

[PATCH, MIPS] 74k madd scheduler tweaks

2012-08-01 Thread Sandra Loosemore
The existing scheduler bypass information for madd on the 74k uses some bits copied from the 24k, and is not quite correct. This patch is based on one originally sent to us by MIPS and has been present in our local source base for years. I've confirmed that we are legally allowed to contribut

Re: [PATCH 2/2] Allow MODE_PARTIAL_INT in expmed costs

2012-08-01 Thread DJ Delorie
> Testing on m32c reveals that we've been asking for cost of > conversion from MODE_PARTIAL_INT. We hadn't actually been > initializing those costs, mind. Ah, ignore my previous email in the m32c thread then ;-)

[PATCH] Fix ARM constant-pool layout calculations under -falign-labels

2012-08-01 Thread Roland McGrath
Using e.g. -falign-labels=16 on ARM can confuse the constant-pool layout code such that it places pool entries too far away from their referring instructions. This change seems to fix it. I don't have a small test case, only a large one, which I haven't actually tried to get to reproduce on any v

[PATCH 2/2] Allow MODE_PARTIAL_INT in expmed costs

2012-08-01 Thread Richard Henderson
Testing on m32c reveals that we've been asking for cost of conversion from MODE_PARTIAL_INT. We hadn't actually been initializing those costs, mind. I'm not only allowing the query, but initializing them too. Committed after testing on x86_64 and m32c. r~ * expmed.h (NUM_MODE_PARTIAL

[PATCH 1/2] m32c: Don't use set_optab_handler

2012-08-01 Thread Richard Henderson
Committed after a build completed. r~ * config/m32c/m32c.c (TARGET_INIT_LIBFUNCS): Remove. (m32c_init_libfuncs): Remove. * config/m32c/cond.md (cstore4_16): Rename from cstore4. (cstore4): New expander. diff --git a/gcc/config/m32c/cond.md b/gcc/config/m32c/con

Re: [PATCH 0/2] Convert s390 to atomic optabs, v2

2012-08-01 Thread Richard Henderson
On 2012-08-01 10:14, Richard Guenther wrote: > If you said > > p_s->y = 0; > > then we can exploit the fact that you dereference p_s and derive > bigger alignment. But I don't see how we can massage the > builtin to preserve such form. Well, put in a memory reference > in the argument, __buil

Remove redundant comparison in debug mode

2012-08-01 Thread François Dumont
Verifying number of comparisons invoked in different algos and different modes I remarked this small performance issue. 2012-08-01 François Dumont * include/debug/functions.h (__check_partition_lower_aux): Remove redundant comparison with pivot value. (__check_partition_upper_aux

Re: ORDERED_EXPR in invert_tree_comparison

2012-08-01 Thread Marc Glisse
Hello, an opinion on this? (I just noticed: I'll update the list in the comment visible at the top of the patch if this gets in). On Thu, 19 Jul 2012, Marc Glisse wrote: Hello, the simple patch below passes the testsuite after a c,c++ bootstrap without new regressions. Note however that

Re: PATCH: PR rtl-optimization/54157: [x32] -maddress-mode=long failures

2012-08-01 Thread H.J. Lu
>> Starting program: /export/build/gnu/gcc-x32/build-x86_64-linux/gcc/cc1 >> -fpreprocessed x.i -quiet -dumpbase x.i -mx32 -maddress-mode=long >> -mtune=generic -march=x86-64 -auxbase x -O2 -version -ftree-vectorize -o >> x.s >> GNU C (GCC) version 4.8.0 20120801 (exper

Re: [PATCH, 4.7] Enable the libstdc++ prettyprinters test suite

2012-08-01 Thread Jonathan Wakely
On 31 July 2012 22:29, Michael Hope wrote: > cc'ed the libstdc++ list. Ping? OK for 4.7 > -- Michael > > On 25/07/12 12:12, Michael Hope wrote: >> >> The libstdc++ prettyprinters test suite isn't called out in Makefile.am. >> Backport Andreas's >> patch from mainline so that a sequential test r

Re: PATCH: PR rtl-optimization/54157: [x32] -maddress-mode=long failures

2012-08-01 Thread Richard Sandiford
eprocessed x.i -quiet -dumpbase x.i -mx32 -maddress-mode=long > -mtune=generic -march=x86-64 -auxbase x -O2 -version -ftree-vectorize -o > x.s > GNU C (GCC) version 4.8.0 20120801 (experimental) > (x86_64-unknown-linux-gnu) > compiled by GNU C version 4.7.1 20120629 (Red Hat 4.7

Re: [RFC / RFH] Re-opened C++/51213 (access control under SFINAE)

2012-08-01 Thread Paolo Carlini
Hi again, On 08/01/2012 08:40 PM, Paolo Carlini wrote: For the second evaluation, the second time we call instantiate_template_1, thus for the interesting g(int) overload, here: spec = retrieve_specialization (gen_tmpl, targ_ptr, 0); gcc_assert (tmpl == gen_tmpl || ((fndecl = re

PATCH: PR rtl-optimization/54157: [x32] -maddress-mode=long failures

2012-08-01 Thread H.J. Lu
=long -mtune=generic -march=x86-64 -auxbase x -O2 -version -ftree-vectorize -o x.s GNU C (GCC) version 4.8.0 20120801 (experimental) (x86_64-unknown-linux-gnu) compiled by GNU C version 4.7.1 20120629 (Red Hat 4.7.1-1), GMP version 5.0.2, MPFR version 3.1.0, MPC version 0.9 GGC heuristics

Re: [RFC / RFH] Re-opened C++/51213 (access control under SFINAE)

2012-08-01 Thread Paolo Carlini
On 08/01/2012 07:35 PM, Jason Merrill wrote: On 08/01/2012 11:49 AM, Paolo Carlini wrote: static_assert(sizeof(g(0)) == 2, "Ouch"); // line 11 typedef int testg[sizeof(g(0)) == 2 ? 1 : -1]; // line 13 what happens is that line 13 is mishandled: sfinae37_red.C:13:48: error: size

Re: [RFC / RFH] Re-opened C++/51213 (access control under SFINAE)

2012-08-01 Thread Jason Merrill
On 08/01/2012 11:49 AM, Paolo Carlini wrote: static_assert(sizeof(g(0)) == 2, "Ouch"); // line 11 typedef int testg[sizeof(g(0)) == 2 ? 1 : -1]; // line 13 what happens is that line 13 is mishandled: sfinae37_red.C:13:48: error: size of array ‘testg’ is negative However, *if I c

Re: [PATCH, MIPS] Add 34Kn cpu

2012-08-01 Thread Richard Sandiford
Sandra Loosemore writes: > This patch makes GCC know about -march=34kn. MIPS asked us to add > support for this processor to our local source base a couple of years > ago; it's basically a 34Kc without the DSP ASE. OK for mainline? > > I have posted the corresponding assembler patch here: > ht

[PATCH] Strength reduction part 3 of 4: candidates with unknown strides

2012-08-01 Thread William J. Schmidt
Greetings, Thanks for the review of part 2! Here's another chunk of the SLSR code (I feel I owe you a few beers at this point). This performs analysis and replacement on groups of related candidates having an SSA name (rather than a constant) for a stride. This leaves only the conditional incre

Re: [PATCH][1/2] Remove referenced vars

2012-08-01 Thread Richard Guenther
On Wed, 1 Aug 2012, Richard Guenther wrote: > > This series aims at removing referenced vars. It builds on the into-SSA > TLC series and the still to be posted removal of var-anns. > > This first patch removes SRAs use of referenced vars. Instead of > turning it upside-down the following simpl

Re: [PATCH 0/2] Convert s390 to atomic optabs, v2

2012-08-01 Thread Richard Guenther
On Wed, 1 Aug 2012, Richard Henderson wrote: > On 08/01/2012 01:40 AM, Richard Guenther wrote: > > I see. So your issue is that you don't get the knowledge > > that the address is even more aligned than required by the > > builtin. > > Yes. Very helpful for quite a few targets that only have wo

Re: [PATCH] Intrinsics for ADCX

2012-08-01 Thread Kirill Yukhin
Hi Richard, > Frankly I don't understand the point of these instructions > being added to the ISA at all. I would have understood an > add-with-carry that did *not* modify the flags at all, but > two separate ones that modify C and O separately is just > downright strange. If there is only one ca

Re: [PATCH 0/2] Convert s390 to atomic optabs, v2

2012-08-01 Thread Richard Henderson
On 08/01/2012 01:40 AM, Richard Guenther wrote: > I see. So your issue is that you don't get the knowledge > that the address is even more aligned than required by the > builtin. Yes. Very helpful for quite a few targets that only have word-sized atomic operations, and we emulate char/short via

Re: [RFC / RFH] Re-opened C++/51213 (access control under SFINAE)

2012-08-01 Thread Paolo Carlini
Hi, On 08/01/2012 04:32 PM, Jason Merrill wrote: I think the problem is that we're deferring access control due to tentative parsing on line 11, and not on line 13. I guess we need a push_deferring_access_checks (dk_no_deferred); pop_deferring_access_checks (); around the substitution of defa

[Patch, Fortran, F03] PR 54147: Interface checks for PPCs & deferred TBPs

2012-08-01 Thread Janus Weil
Hi all, here is a follow-up patch to my recent fix for PR 42418. Shortly after committing it, I realized that the same checks should be done not only for plain PROCEDURE declarations, but also for procedure-pointer components and (deferred) type-bound procedures. So, what the attached patch does,

Re: rfa: merge handling of locals and globals in remove_unused_locals

2012-08-01 Thread Richard Guenther
On Wed, Aug 1, 2012 at 5:28 PM, Michael Matz wrote: > Hi, > > On Wed, 1 Aug 2012, Richard Guenther wrote: > >> Ok. Would be nice to now unify global and local var handling with a >> single bitmap. > > Yeah, wanted to do that as follow-up. Namely like so. Regstrapping on > x86_64-linux in progre

rfa: merge handling of locals and globals in remove_unused_locals

2012-08-01 Thread Michael Matz
Hi, On Wed, 1 Aug 2012, Richard Guenther wrote: > Ok. Would be nice to now unify global and local var handling with a > single bitmap. Yeah, wanted to do that as follow-up. Namely like so. Regstrapping on x86_64-linux in progress on top of your remove-referenced-vars patches. Okay for tru

Re: PING [PATCH] Fix PR libstdc++/54036, problem negating DFP NaNs

2012-08-01 Thread Janis Johnson
On 08/01/2012 07:29 AM, Paolo Carlini wrote: > Hi, > > On 08/01/2012 12:46 AM, Peter Bergner wrote: >> I'd like to ping the following libstdc++ DFP patch that fixes PR54036: >> >>http://gcc.gnu.org/ml/gcc-patches/2012-07/msg00959.html > I think the patch is essentially Ok, but I would recommen

Re: [3/3] remove var_ann: die

2012-08-01 Thread Richard Guenther
On Wed, Aug 1, 2012 at 4:13 PM, Michael Matz wrote: > Hi, > > On Wed, 1 Aug 2012, Michael Matz wrote: > >> The only remaining semantic of var_ann now is "if it's non-zero it's a >> non-global variable that was put into referenced_vars". > > And that's removed in this patch. Most of the time it's

Re: [2/3] remove var_ann: Remove used flag

2012-08-01 Thread Richard Guenther
On Wed, Aug 1, 2012 at 4:09 PM, Michael Matz wrote: > Hi, > > this removes the last member of var_ann_d, a bit used only locally in > remove_unused_locals, so we can as well just use a bitmap. (The funny > renaming of the member I had to do because gengtype doesn't like empty > structs, the whole

Re: [1/3] remove var_ann: tlc for out-of-ssa

2012-08-01 Thread Richard Guenther
On Wed, Aug 1, 2012 at 4:05 PM, Michael Matz wrote: > Hi, > > this tidies ssa liveness calculation a bit (related to out-of-ssa). In > particular it doesn't make use of var annotations to compress the index > space from partitions to base variable indices anymore, but instead a > hashmap built on

Re: [RFC / RFH] Re-opened C++/51213 (access control under SFINAE)

2012-08-01 Thread Jason Merrill
I think the problem is that we're deferring access control due to tentative parsing on line 11, and not on line 13. I guess we need a push_deferring_access_checks (dk_no_deferred); pop_deferring_access_checks (); around the substitution of default template args in type_unification_real. Jason

Re: PING [PATCH] Fix PR libstdc++/54036, problem negating DFP NaNs

2012-08-01 Thread Paolo Carlini
Hi, On 08/01/2012 12:46 AM, Peter Bergner wrote: I'd like to ping the following libstdc++ DFP patch that fixes PR54036: http://gcc.gnu.org/ml/gcc-patches/2012-07/msg00959.html I think the patch is essentially Ok, but I would recommend giving Janis a chance to comment (say 24/48 h). Note t

[3/3] remove var_ann: die

2012-08-01 Thread Michael Matz
Hi, On Wed, 1 Aug 2012, Michael Matz wrote: > The only remaining semantic of var_ann now is "if it's non-zero it's a > non-global variable that was put into referenced_vars". And that's removed in this patch. Most of the time it's not very interesting to know if a variable was put in referenc

PING: PATCH: Properly handle arg_pointer and frame_pointer in DWARF output

2012-08-01 Thread H.J. Lu
On Sat, Apr 28, 2012 at 8:11 AM, H.J. Lu wrote: > Hi, > > arg_pointer and frame_pointer are handled as special cases in > based_loc_descr. > > (plus:DI (reg/f:DI 16 argp) > (const_int -20 [0xffec])) > > is perfectly valid when Pmode == DImode and DWARF2_ADDR_SIZE is 32bit > with pt

[2/3] remove var_ann: Remove used flag

2012-08-01 Thread Michael Matz
Hi, this removes the last member of var_ann_d, a bit used only locally in remove_unused_locals, so we can as well just use a bitmap. (The funny renaming of the member I had to do because gengtype doesn't like empty structs, the whole thing will be removed momentarily with the third patch). T

[1/3] remove var_ann: tlc for out-of-ssa

2012-08-01 Thread Michael Matz
Hi, this tidies ssa liveness calculation a bit (related to out-of-ssa). In particular it doesn't make use of var annotations to compress the index space from partitions to base variable indices anymore, but instead a hashmap built on the fly when we need it. The basevars itself actually aren

Re: PR53914, rs6000 constraints and reload queries

2012-08-01 Thread Alan Modra
Hi David, This is the last of my vendetta against the "o" constraint in the rs6000 backend. Remaining are a few places in rs6000.md where the operand predicate is offsettable_mem_operand, and one instance in spe.md. I believe none of these can run into mode_dependent_address causing "insn does no

[PATCH, committed] Strength reduction clean-up (base name => base expr)

2012-08-01 Thread William J. Schmidt
This cleans up terminology in strength reduction. What used to be a base SSA name is now sometimes other tree expressions, so the term "base name" is replaced by "base expression" throughout. Bootstrapped and tested with no new regressions on powerpc64-unknown-linux-gnu; committed as obvious. Th

Re: PING [PATCH] Fix PR libstdc++/54036, problem negating DFP NaNs

2012-08-01 Thread Jason Merrill
On 07/31/2012 06:46 PM, Peter Bergner wrote: I'd like to ping the following libstdc++ DFP patch that fixes PR54036: http://gcc.gnu.org/ml/gcc-patches/2012-07/msg00959.html I don't normally review library patches; I've added Benjamin to CC, as he's one of the library maintainers. Jason

Re: [google/main] Add -fno-section-anchors for powerpc, workround for Google ref b/6663281 (issue6443071)

2012-08-01 Thread Diego Novillo
On 12-08-01 03:49 , Simon Baldwin wrote: Workround for Google ref b/6663281 Appends -fno-section-anchors to -fprofile-{generate,use} -fripa, for powerpc targets only. No-op for other targets. For google/main. Tested for bootstrap and regression. 2012-08-01 Simon Baldwin * gcc/tes

Re: [Patch, Fortran] assumed-rank some bound intrinsics support, fix failures and improve diagnostcs

2012-08-01 Thread Richard Guenther
On Wed, Aug 1, 2012 at 2:37 PM, Tobias Burnus wrote: > On 08/01/2012 01:37 PM, Mikael Morin wrote: >>> >>> However, I found another spot where one needs to have a scalarizer; >>> possibly a poor man's version is enough. Namely INTENT(OUT) handling. >> >> Indeed. >>> >>> Do you have an idea how to

Re: [PATCH] propagate anti-range to switch in tree-vrp

2012-08-01 Thread Richard Guenther
On Sat, Jul 21, 2012 at 3:57 PM, Tom de Vries wrote: > Jakub, > > this patch adds propagation of anti-ranges to switches. > > The test-case is this: > ... > void > f3 (int s) > { > if (s >> 3 == -2) > /* s in range [ -16, -9]. */ > ; > else > { > /* s in range ~[-16, -9], so

Re: Ping: [PATCH] Fix PR46556 (straight-line strength reduction, part 2)

2012-08-01 Thread Richard Guenther
On Sun, Jul 22, 2012 at 5:19 PM, William J. Schmidt wrote: > Ping... > > On Thu, 2012-06-28 at 16:45 -0500, William J. Schmidt wrote: >> Here's a relatively small piece of strength reduction that solves that >> pesky addressing bug that got me looking at this in the first place... >> >> The main p

Re: [Patch, Fortran] assumed-rank some bound intrinsics support, fix failures and improve diagnostcs

2012-08-01 Thread Tobias Burnus
On 08/01/2012 01:37 PM, Mikael Morin wrote: However, I found another spot where one needs to have a scalarizer; possibly a poor man's version is enough. Namely INTENT(OUT) handling. Indeed. Do you have an idea how to best handle that case? It seems some new code is necessary. I don't know how

[PATCH][2b/2] Remove referenced vars

2012-08-01 Thread Richard Guenther
This removes the referenced vars machinery (stubbing out add_referenced_vars and gimple_referenced_vars - a patch fixing all callers will be 2c/2). Bootstrap and regtest pending on x86_64-unknown-linux-gnu. Richard. 2012-08-01 Richard Guenther * tree-flow.h (struct gimple_df): Remov

[PATCH, i386]: Prevent SImode subregs of stack pointer in addresses

2012-08-01 Thread Uros Bizjak
Hello! For some reason simplify_subreg does not like stack pointer. We call simplify_subreg when printing address operands, so we have to prevent SImode subregs of stack pointers from going into the address. 2012-08-01 Uros Bizjak * config/i386/i386.c (ix86_address_subreg_operand): Re

[PATCH][2a/2] Remove referenced vars

2012-08-01 Thread Richard Guenther
This is part one of the patch (and thus single commit) that will remove referenced vars once we got rid of var annotations. It removes referenced_var_lookup and all callers - which shows you where dumping will be affected. Bootstrap & regtest pending on x86_64-unknown-linux-gnu. Richard. 2012-0

[PATCH] Update tree-ssa docs

2012-08-01 Thread Richard Guenther
Committed as obvious. Richard. 2012-08-01 Richard Guenther * tree-ssa.texi: Remove pieces mentioning mark_sym_for_renaming. Index: gcc/doc/tree-ssa.texi === --- gcc/doc/tree-ssa.texi (revision 190034) +++ gcc/doc/

Re: [Patch, Fortran] assumed-rank some bound intrinsics support, fix failures and improve diagnostcs

2012-08-01 Thread Mikael Morin
On 01/08/2012 12:00, Tobias Burnus wrote: > On 07/27/2012 07:26 PM, Mikael Morin wrote: >> do you have a test case exhibiting the problem? It seems fine to me. > > Your second test case was too convoluted for me - and as I wasn't at > home, I couldn't test it. I now believe that your patch is okay

[PATCH][1/2] Remove referenced vars

2012-08-01 Thread Richard Guenther
This series aims at removing referenced vars. It builds on the into-SSA TLC series and the still to be posted removal of var-anns. This first patch removes SRAs use of referenced vars. Instead of turning it upside-down the following simply adds a pass-local "referenced" vars reverse lookup capa

[RFC / RFH] Re-opened C++/51213 (access control under SFINAE)

2012-08-01 Thread Paolo Carlini
Hi, thus I started analyzing why we are handling incorrectly some variants posted by Daniel. A typical example (another is about using the sizeof in a template argument) is: class C { typedef int type; // Line 2 }; template auto f(int) -> char; template auto f(...) -> char (&)[2]; typedef

[google/main] Add -fno-section-anchors for powerpc, workround for Google ref b/6663281 (issue6443071)

2012-08-01 Thread Simon Baldwin
Workround for Google ref b/6663281 Appends -fno-section-anchors to -fprofile-{generate,use} -fripa, for powerpc targets only. No-op for other targets. For google/main. Tested for bootstrap and regression. 2012-08-01 Simon Baldwin * gcc/testsuite/gcc.dg/tree-prof/lipo/lipo.exp: Appe

Re: [PATCH] Improve debug info if tree DCE removes stores (PR debug/50317, fallout)

2012-08-01 Thread Richard Guenther
On Fri, Dec 2, 2011 at 8:28 PM, Jakub Jelinek wrote: > On Fri, Dec 02, 2011 at 02:27:40PM +0100, Richard Guenther wrote: >> This change seems wrong. We are turning valid gimple >> >> # DEBUG D#2 => transfer.0 [with addres taken] >> >> into invalid one >> >> # DEBUG D#2 => transfer.0 [without ad

Re: [Patch, Fortran] assumed-rank some bound intrinsics support, fix failures and improve diagnostcs

2012-08-01 Thread Tobias Burnus
On 07/27/2012 07:26 PM, Mikael Morin wrote: do you have a test case exhibiting the problem? It seems fine to me. Your second test case was too convoluted for me - and as I wasn't at home, I couldn't test it. I now believe that your patch is okay; I will later formally review it. Do you int

Re: Commit: XStormy16: Add __clrsbhi2() to libgcc

2012-08-01 Thread nick clifton
Hi Johann, Hi, just out of curiosity: Is there a special reason to add a stormy16-specific implementation instead of using the code in libgcc2.c? t-avr for example uses the C implementation in libgcc2.c for HI. Are there disadvantages? Apart from not using some slightly frightening makefile mag

Re: [gimplefe] Patch for recognizing function declarations

2012-08-01 Thread Dodji Seketeli
Hello, Sandeep Soni a écrit: > Hi Diego, > > The following patch recognizes function declarations. I am now trying > to create a gimple sequence of all the statements within the function > body. > The chagelog is as follows: > > 2012-07-31 Sandeep Soni > > * parser.c (gl_token_starts_de

[PATCH][7/n] into-SSA TLC

2012-08-01 Thread Richard Guenther
This cleans up the way we rename all virtual operands throughout the compiler by simply providing an abstraction for that. mark_sym_for_renaming is gone then. Bootstrapped and tested on x86_64-unknown-linux-gnu. I will apply 6/n and 7/n later today. Richard. 2012-08-01 Richard Guenther

Re: [PATCH 0/2] Convert s390 to atomic optabs, v2

2012-08-01 Thread Richard Guenther
On Tue, 31 Jul 2012, Richard Henderson wrote: > On 2012-07-31 02:09, Richard Guenther wrote: > > What do we expect __builtin_compare_exchange to do for > > unaligned inputs? > > At the moment we expect it to SIGBUS, as a rule. > > We'd *like* to defer to the library routine for unaligned, > but