Revert the following commit to work around a bootstrap comparison failure on ARMv7, as reported at . commit f6ab85b7049a03962ea98924d00802da357a1ad3 Author: renlin Date: Wed Dec 2 14:06:31 2015 +0000 [PR67383][ARM][4.9]Backport of "Allow any register for DImode values in Thumb2" This partially fix PR67383. It allows the reload more flexibility to choose spilling pseudo registers. gcc/ChangeLog: 2015-12-02 Renlin Li Backport from mainline. 2014-04-22 Ramana Radhakrishnan * config/arm/arm.c (arm_hard_regno_mode_ok): Loosen restrictions on core registers for DImode values in Thumb2. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_9-branch@231177 138bc75d-0d04-0410-961f-82ee72b054a4 diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c index 8ba6060..d9028a1 100644 --- b/gcc/config/arm/arm.c +++ a/gcc/config/arm/arm.c @@ -22624,19 +22624,12 @@ } /* We allow almost any value to be stored in the general registers. - Restrict doubleword quantities to even register pairs in ARM state - so that we can use ldrd. Do not allow very large Neon structure - opaque modes in general registers; they would use too many. */ + Restrict doubleword quantities to even register pairs so that we can + use ldrd. Do not allow very large Neon structure opaque modes in + general registers; they would use too many. */ if (regno <= LAST_ARM_REGNUM) - { - if (ARM_NUM_REGS (mode) > 4) - return FALSE; - - if (TARGET_THUMB2) - return TRUE; - - return !(TARGET_LDRD && GET_MODE_SIZE (mode) > 4 && (regno & 1) != 0); - } + return !(TARGET_LDRD && GET_MODE_SIZE (mode) > 4 && (regno & 1) != 0) + && ARM_NUM_REGS (mode) <= 4; if (regno == FRAME_POINTER_REGNUM || regno == ARG_POINTER_REGNUM) 44f8'>root/tests/nar.scm
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2021-11-16daemon: Do not deduplicate files smaller than 8 KiB....Files smaller than 8 KiB typically represent ~70% of the entries in /gnu/store/.links but only contribute to ~4% of the space savings afforded by deduplication. Not considering these files for deduplication speeds up file insertion in the store and, more importantly, leaves 'removeUnusedLinks' with fewer entries to traverse, thereby speeding it up proportionally. Partly fixes <https://issues.guix.gnu.org/24937>. * config-daemon.ac: Remove symlink hard link check and CAN_LINK_SYMLINK definition. * guix/store/deduplication.scm (%deduplication-minimum-size): New variable. (deduplicate)[loop]: Do not recurse when FILE's size is below %DEDUPLICATION-MINIMUM-SIZE. (dump-port): New procedure. (dump-file/deduplicate)[hash]: Turn into... [dump-and-compute-hash]: ... this thunk. Call 'deduplicate' only when SIZE is greater than %DEDUPLICATION-MINIMUM-SIZE; otherwise call 'dump-port'. * nix/libstore/gc.cc (LocalStore::removeUnusedLinks): Drop files where st.st_size < deduplicationMinSize. * nix/libstore/local-store.hh (deduplicationMinSize): New declaration. * nix/libstore/optimise-store.cc (deduplicationMinSize): New variable. (LocalStore::optimisePath_): Return when PATH is a symlink or smaller than 'deduplicationMinSize'. * tests/derivations.scm ("identical files are deduplicated"): Produce files bigger than %DEDUPLICATION-MINIMUM-SIZE. * tests/nar.scm ("restore-file-set with directories (signed, valid)"): Likewise. * tests/store-deduplication.scm ("deduplicate, below %deduplication-minimum-size"): New test. ("deduplicate", "deduplicate, ENOSPC"): Produce files bigger than %DEDUPLICATION-MINIMUM-SIZE. * tests/store.scm ("substitute, deduplication"): Likewise. Ludovic Courtès
2020-12-15nar: Deduplicate files right as they are restored....This avoids having to traverse and re-read the files that we have just restored, thereby reducing I/O. * guix/serialization.scm (dump-file): New procedure. (restore-file): Add #:dump-file parameter and honor it. * guix/store/deduplication.scm (tee, dump-file/deduplicate): New procedures. * guix/nar.scm (restore-one-item): Pass #:dump-file to 'restore-file'. (finalize-store-file): Pass #:deduplicate? #f to 'register-items'. * tests/nar.scm <top level>: Call 'setenv' to set "NIX_STORE". Ludovic Courtès
2020-12-15serialization: 'restore-file' sets canonical timestamp and permissions....* guix/serialization.scm (restore-file): Set the permissions and mtime of FILE. * guix/nar.scm (finalize-store-file): Pass #:reset-timestamps? #f to 'register-items'. * tests/nar.scm (rm-rf): Add 'chmod' calls to ensure files are writable. ("write-file + restore-file with symlinks"): Ensure every file in OUTPUT passes 'canonical-file?'. * tests/guix-archive.sh: Run "chmod -R +w" before "rm -rf". Ludovic Courtès
2020-12-15serialization: 'fold-archive' notifies about directory processing completion....* guix/serialization.scm (fold-archive): Call PROC with a 'directory-complete tag when done with a directory. (restore-file): Handle it. * guix/scripts/archive.scm (list-contents): Likewise. * guix/scripts/challenge.scm (archive-contents): Likewise. * tests/nar.scm ("write-file-tree + fold-archive"): Adjust accordingly. Ludovic Courtès