Re: Problem cropping up in Value Range Propogation

2020-08-24 Thread Richard Biener via Gcc
On Tue, Aug 11, 2020 at 6:15 AM Gary Oblock via Gcc wrote: > > I'm trying to debug a problem cropping up in value range propagation. > Ironically I probably own an original copy 1995 copy of the paper it's > based on but that's not going to be much help since I'm lost in the > weeds. It's running

Re: GCC Plugins and global_options

2020-08-24 Thread Richard Biener via Gcc
On Thu, Aug 13, 2020 at 10:39 AM Jakub Jelinek via Gcc wrote: > > Hi! > > Any time somebody adds or removes an option in some *.opt file (which e.g. > on the 10 branch after branching off 11 happened 5 times already), many > offsets in global_options variable change. It is true we don't guarantee

Re: RFC: -fno-share-inlines

2020-08-24 Thread Allan Sandfeld Jensen
On Montag, 24. August 2020 08:52:04 CEST Richard Biener wrote: > On Mon, Aug 10, 2020 at 9:36 AM Allan Sandfeld Jensen > > wrote: > > Following the previous discussion, this is a proposal for a patch that > > adds > > the flag -fno-share-inlines that can be used when compiling singular > > source

Re: Question about IPA-PTA and build_alias

2020-08-24 Thread Richard Biener via Gcc
On Mon, Aug 17, 2020 at 3:22 PM Erick Ochoa wrote: > > Hello, > > I'm looking to understand better the points-to analysis (IPA-PTA) and > the alias analysis (build_alias). > > How is the information produced by IPA-PTA consumed? > > Are alias sets in build_alias computed by the intersections of th

Re: Peephole optimisation: isWhitespace()

2020-08-24 Thread Richard Biener via Gcc
On Mon, Aug 17, 2020 at 7:09 PM Stefan Kanthak wrote: > > "Allan Sandfeld Jensen" wrote: > > > On Freitag, 14. August 2020 18:43:12 CEST Stefan Kanthak wrote: > >> Hi @ll, > >> > >> in his ACM queue article , > >> Matt Godbolt used the function > >> >

Re: Question about IPA-PTA and build_alias

2020-08-24 Thread Erick Ochoa
On 24/08/2020 09:40, Richard Biener wrote: On Mon, Aug 17, 2020 at 3:22 PM Erick Ochoa wrote: Hello, I'm looking to understand better the points-to analysis (IPA-PTA) and the alias analysis (build_alias). How is the information produced by IPA-PTA consumed? Are alias sets in build_alias

Re: Peephole optimisation: isWhitespace()

2020-08-24 Thread Alexander Monakov via Gcc
On Mon, 24 Aug 2020, Richard Biener via Gcc wrote: > Whether or not the conditional branch sequence is faster depends on whether > the branch is well-predicted which very much depends on the data you > feed the isWhitespace function with but I guess since this is the > c == ' ' test it _will_ be a

Re: Question about Gimple Variables named D.[0-9]*

2020-08-24 Thread Richard Biener via Gcc
On Thu, Aug 20, 2020 at 11:51 AM Erick Ochoa wrote: > > Hello, > > I am looking at the dump for the build_alias pass. I see a lot of > variables with the naming convention D.[0-9]* in the points-to sets > being printed. > > When I compile with > > -fdump-tree-all-all > > I can see that the suffix

Re: Peephole optimisation: isWhitespace()

2020-08-24 Thread Stefan Kanthak
"Richard Biener" wrote: > On Mon, Aug 17, 2020 at 7:09 PM Stefan Kanthak > wrote: >> >> "Allan Sandfeld Jensen" wrote: >> >> > On Freitag, 14. August 2020 18:43:12 CEST Stefan Kanthak wrote: >> >> Hi @ll, >> >> >> >> in his ACM queue article , >> >>

Re: Peephole optimisation: isWhitespace()

2020-08-24 Thread Richard Biener via Gcc
On Mon, Aug 24, 2020 at 1:22 PM Stefan Kanthak wrote: > > "Richard Biener" wrote: > > > On Mon, Aug 17, 2020 at 7:09 PM Stefan Kanthak > > wrote: > >> > >> "Allan Sandfeld Jensen" wrote: > >> > >> > On Freitag, 14. August 2020 18:43:12 CEST Stefan Kanthak wrote: > >> >> Hi @ll, > >> >> > >> >>

Re: Peephole optimisation: isWhitespace()

2020-08-24 Thread Stefan Kanthak
"Richard Biener" wrote: > On Mon, Aug 24, 2020 at 1:22 PM Stefan Kanthak > wrote: >> >> "Richard Biener" wrote: >> >> > On Mon, Aug 17, 2020 at 7:09 PM Stefan Kanthak >> > wrote: >> >> >> >> "Allan Sandfeld Jensen" wrote: >> >> >> >> > On Freitag, 14. August 2020 18:43:12 CEST Stefan Kanth

Alloca documentation

2020-08-24 Thread Philip R Brenan via Gcc
Hi *GCC*: Given the example for *alloca*() at: https://www.gnu.org/software/libc/manual/html_mono/libc.html#Alloca-Example May I recommend that the code below portrays the use of alloca() more completely in that it demonstrates that it is exiting the containing function, not the {} of the first

Re: Alloca documentation

2020-08-24 Thread Jonathan Wakely via Gcc
On Mon, 24 Aug 2020 at 15:39, Philip R Brenan via Gcc wrote: > > Hi *GCC*: > > Given the example for *alloca*() at: > > https://www.gnu.org/software/libc/manual/html_mono/libc.html#Alloca-Example > > May I recommend that the code below portrays the use of alloca() more > completely in that it demo

Re: Clobber REG_CC only for some constraint alternatives?

2020-08-24 Thread Jeff Law via Gcc
On Thu, 2020-08-20 at 21:36 +0530, Senthil Kumar Selvaraj via Gcc wrote: > Pip Cet writes: > > > On Tue, Aug 18, 2020 at 6:52 AM Senthil Kumar Selvaraj > > wrote: > > > > recognize such insns, but as it stands that define_insn would > > > > recognize the incorrect insn: > > > > > > > > [(set (re

Have a look

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