[llvm-branch-commits] [cfe-branch] r245094 - Mention CFI in release notes.

Author: pcc Date: Fri Aug 14 15:30:05 2015 New Revision: 245094 URL: http://llvm.org/viewvc/llvm-project?rev=245094&view=rev Log: Mention CFI in release notes. Modified: cfe/branches/release_37/docs/ReleaseNotes.rst Modified: cfe/branches/release_37/docs/ReleaseNotes.rst URL: http://llvm.or

[llvm-branch-commits] [llvm-branch] r260702 - ARM: Mention r251322 in release notes.

Author: pcc Date: Fri Feb 12 12:46:48 2016 New Revision: 260702 URL: http://llvm.org/viewvc/llvm-project?rev=260702&view=rev Log: ARM: Mention r251322 in release notes. Modified: llvm/branches/release_38/docs/ReleaseNotes.rst Modified: llvm/branches/release_38/docs/ReleaseNotes.rst URL: htt

[llvm-branch-commits] [compiler-rt] d302398 - hwasan: Update register-dump-read.c test to reserve x23 instead of x20.

Author: Peter Collingbourne Date: 2021-01-15T16:14:36-08:00 New Revision: d302398ff05f6d2bfbcb5c4fdafccf8a0e3b9875 URL: https://github.com/llvm/llvm-project/commit/d302398ff05f6d2bfbcb5c4fdafccf8a0e3b9875 DIFF: https://github.com/llvm/llvm-project/commit/d302398ff05f6d2bfbcb5c4fdafccf8a0e3b9875

[llvm-branch-commits] [lldb] 7e5a187 - CrashReason: Add MTE tag check faults to the list of crash reasons.

Author: Peter Collingbourne Date: 2020-12-29T14:36:50-08:00 New Revision: 7e5a187de31358741f9868cdee7b0c63c1343d8d URL: https://github.com/llvm/llvm-project/commit/7e5a187de31358741f9868cdee7b0c63c1343d8d DIFF: https://github.com/llvm/llvm-project/commit/7e5a187de31358741f9868cdee7b0c63c1343d8d

[llvm-branch-commits] [lld] aed8454 - ELF: Teach the linker about the 'B' augmentation string character.

Author: Peter Collingbourne Date: 2021-01-05T19:51:11-08:00 New Revision: aed84542d5a05b415a9a7f54494107aea8bd7e89 URL: https://github.com/llvm/llvm-project/commit/aed84542d5a05b415a9a7f54494107aea8bd7e89 DIFF: https://github.com/llvm/llvm-project/commit/aed84542d5a05b415a9a7f54494107aea8bd7e89

[llvm-branch-commits] [compiler-rt] 6dc3c11 - scudo: Update a comment to match the Linux kernel behavior. NFCI.

Author: Peter Collingbourne Date: 2021-01-05T19:51:47-08:00 New Revision: 6dc3c117a30744f3fcff5297ef702c1773d9328e URL: https://github.com/llvm/llvm-project/commit/6dc3c117a30744f3fcff5297ef702c1773d9328e DIFF: https://github.com/llvm/llvm-project/commit/6dc3c117a30744f3fcff5297ef702c1773d9328e

[llvm-branch-commits] [compiler-rt] f21f333 - scudo: Remove positional template arguments for secondary cache. NFCI.

Author: Peter Collingbourne Date: 2020-12-14T15:40:07-08:00 New Revision: f21f3339ba315f181e195f368f2a7ecff1cee597 URL: https://github.com/llvm/llvm-project/commit/f21f3339ba315f181e195f368f2a7ecff1cee597 DIFF: https://github.com/llvm/llvm-project/commit/f21f3339ba315f181e195f368f2a7ecff1cee597

[llvm-branch-commits] [compiler-rt] e22d802 - scudo: Adjust test to use correct check for primary allocations.

Author: Peter Collingbourne Date: 2020-12-17T10:42:17-08:00 New Revision: e22d802e587b8954748e2b2193195a946ba105e8 URL: https://github.com/llvm/llvm-project/commit/e22d802e587b8954748e2b2193195a946ba105e8 DIFF: https://github.com/llvm/llvm-project/commit/e22d802e587b8954748e2b2193195a946ba105e8

[llvm-branch-commits] [compiler-rt] dfa4084 - scudo: Remove ANDROID_EXPERIMENTAL_MTE macro.

Author: Peter Collingbourne Date: 2020-12-21T10:53:24-08:00 New Revision: dfa40840e0e2fa094c5d3f441affe0785cdc8d09 URL: https://github.com/llvm/llvm-project/commit/dfa40840e0e2fa094c5d3f441affe0785cdc8d09 DIFF: https://github.com/llvm/llvm-project/commit/dfa40840e0e2fa094c5d3f441affe0785cdc8d09

[llvm-branch-commits] [compiler-rt] 6dfe580 - scudo: Move the configuration for the primary allocator to Config. NFCI.

Author: Peter Collingbourne Date: 2020-12-22T14:54:40-08:00 New Revision: 6dfe5801e01d259d00198147b27438ffea39e59f URL: https://github.com/llvm/llvm-project/commit/6dfe5801e01d259d00198147b27438ffea39e59f DIFF: https://github.com/llvm/llvm-project/commit/6dfe5801e01d259d00198147b27438ffea39e59f

[llvm-branch-commits] [compiler-rt] e6b3db6 - scudo: Replace the Cache argument on MapAllocator with a Config argument. NFCI.

Author: Peter Collingbourne Date: 2020-12-22T16:52:48-08:00 New Revision: e6b3db6309f201075dd97fdfb89297f481bcee6e URL: https://github.com/llvm/llvm-project/commit/e6b3db6309f201075dd97fdfb89297f481bcee6e DIFF: https://github.com/llvm/llvm-project/commit/e6b3db6309f201075dd97fdfb89297f481bcee6e

[llvm-branch-commits] [compiler-rt] faac1c0 - scudo: Move the management of the UseMemoryTagging bit out of the Primary. NFCI.

Author: Peter Collingbourne Date: 2020-12-22T16:52:54-08:00 New Revision: faac1c02c802048efa17f8f6cda8f39b5584f0c6 URL: https://github.com/llvm/llvm-project/commit/faac1c02c802048efa17f8f6cda8f39b5584f0c6 DIFF: https://github.com/llvm/llvm-project/commit/faac1c02c802048efa17f8f6cda8f39b5584f0c6

[llvm-branch-commits] [compiler-rt] 9f8aeb0 - scudo: Split setRandomTag in two. NFCI.

Author: Peter Collingbourne Date: 2020-12-09T11:48:41-08:00 New Revision: 9f8aeb0602935f7bb49fb093fedaad5ec4e87497 URL: https://github.com/llvm/llvm-project/commit/9f8aeb0602935f7bb49fb093fedaad5ec4e87497 DIFF: https://github.com/llvm/llvm-project/commit/9f8aeb0602935f7bb49fb093fedaad5ec4e87497

[llvm-branch-commits] [compiler-rt] e5a28e1 - scudo: Fix quarantine allocation when MTE enabled.

Author: Peter Collingbourne Date: 2020-12-09T11:48:41-08:00 New Revision: e5a28e1261a0c42821cb3bd4dc40092c458fadfb URL: https://github.com/llvm/llvm-project/commit/e5a28e1261a0c42821cb3bd4dc40092c458fadfb DIFF: https://github.com/llvm/llvm-project/commit/e5a28e1261a0c42821cb3bd4dc40092c458fadfb

[llvm-branch-commits] [compiler-rt] a779050 - scudo: Shrink secondary header and cache entry size by a word on Linux. NFCI.

Author: Peter Collingbourne Date: 2020-12-09T14:14:49-08:00 New Revision: a7790508522fc277963df974dc95308e3c11 URL: https://github.com/llvm/llvm-project/commit/a7790508522fc277963df974dc95308e3c11 DIFF: https://github.com/llvm/llvm-project/commit/a7790508522fc277963df974dc95308e3c11

[llvm-branch-commits] AArch64: Relax x16/x17 constraint on AUT in certain cases. (PR #132857)

https://github.com/pcc created https://github.com/llvm/llvm-project/pull/132857 On most operating systems, the x16 and x17 registers are not special, so there is no benefit, and only a code size cost, to constraining AUT to only using them. Therefore, adjust the backend to only use the AUT pseudo

[llvm-branch-commits] [libcxx] libcxx: In gdb test detect execute_mi with feature check instead of version check. (PR #132291)

https://github.com/pcc updated https://github.com/llvm/llvm-project/pull/132291 >From 89ce369ab9b49b8c23a87ad0a888002dd85c094c Mon Sep 17 00:00:00 2001 From: Peter Collingbourne Date: Thu, 20 Mar 2025 15:12:39 -0700 Subject: [PATCH] Format Created using spr 1.3.6-beta.1 --- libcxx/test/libcxx/

[llvm-branch-commits] AArch64: Relax x16/x17 constraint on AUT in certain cases. (PR #132857)

https://github.com/pcc updated https://github.com/llvm/llvm-project/pull/132857 ___ llvm-branch-commits mailing list llvm-branch-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits

[llvm-branch-commits] MachineInstrBuilder: Introduce copyMIMetadata() function. (PR #133535)

https://github.com/pcc created https://github.com/llvm/llvm-project/pull/133535 This reduces the amount of boilerplate required when adding a new field to MIMetadata and reduces the chance of bugs like the one I fixed in TargetInstrInfo::reassociateOps.

[llvm-branch-commits] [llvm] gn build: Add check-builtins target. (PR #134482)

https://github.com/pcc updated https://github.com/llvm/llvm-project/pull/134482 >From bc8dda56bcfadc6d7312b53313159a978d71f4fb Mon Sep 17 00:00:00 2001 From: Peter Collingbourne Date: Fri, 4 Apr 2025 22:10:52 -0700 Subject: [PATCH] Remove unnecessary code Created using spr 1.3.6-beta.1 --- ...

[llvm-branch-commits] gn build: Add check-builtins target. (PR #134482)

https://github.com/pcc created https://github.com/llvm/llvm-project/pull/134482 Tested on aarch64 Linux and x86_64 Linux. ___ llvm-branch-commits mailing list llvm-branch-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-bra

[llvm-branch-commits] libcxx: In gdb test detect execute_mi with feature check instead of version check. (PR #132291)

https://github.com/pcc created https://github.com/llvm/llvm-project/pull/132291 The existing version check can lead to test failures on some distribution packages of gdb where not all components of the version number are integers, such as Fedora where gdb.VERSION can be something like "15.2-4.fc4

[llvm-branch-commits] [compiler-rt] compiler-rt: Introduce runtime functions for emulated PAC. (PR #133530)

https://github.com/pcc updated https://github.com/llvm/llvm-project/pull/133530 >From b37a44fff650b06eda249060277d0c007226cad2 Mon Sep 17 00:00:00 2001 From: Peter Collingbourne Date: Thu, 3 Apr 2025 21:51:44 -0700 Subject: [PATCH] Fix CMake build Created using spr 1.3.6-beta.1 --- compiler-rt

[llvm-branch-commits] [compiler-rt] compiler-rt: Introduce runtime functions for emulated PAC. (PR #133530)

https://github.com/pcc updated https://github.com/llvm/llvm-project/pull/133530 >From b37a44fff650b06eda249060277d0c007226cad2 Mon Sep 17 00:00:00 2001 From: Peter Collingbourne Date: Thu, 3 Apr 2025 21:51:44 -0700 Subject: [PATCH] Fix CMake build Created using spr 1.3.6-beta.1 --- compiler-rt

[llvm-branch-commits] [llvm] gn build: Add check-builtins target. (PR #134482)

https://github.com/pcc updated https://github.com/llvm/llvm-project/pull/134482 >From bc8dda56bcfadc6d7312b53313159a978d71f4fb Mon Sep 17 00:00:00 2001 From: Peter Collingbourne Date: Fri, 4 Apr 2025 22:10:52 -0700 Subject: [PATCH] Remove unnecessary code Created using spr 1.3.6-beta.1 --- ...

[llvm-branch-commits] ELF: Only rewrite non-preemptible IFUNCs to IPLT functions if a non-IRELATIVE relocation is needed. (PR #133531)

https://github.com/pcc updated https://github.com/llvm/llvm-project/pull/133531 ___ llvm-branch-commits mailing list llvm-branch-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits

[llvm-branch-commits] ELF: Only rewrite non-preemptible IFUNCs to IPLT functions if a non-IRELATIVE relocation is needed. (PR #133531)

https://github.com/pcc edited https://github.com/llvm/llvm-project/pull/133531 ___ llvm-branch-commits mailing list llvm-branch-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits

[llvm-branch-commits] gn build: Add hwasan_preinit.cpp to hwasan static library to match CMake. (PR #134942)

https://github.com/pcc created https://github.com/llvm/llvm-project/pull/134942 None ___ llvm-branch-commits mailing list llvm-branch-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits

[llvm-branch-commits] gn build: Replace ${hwasan_name}-preinit with hwasan-preinit. (PR #134943)

https://github.com/pcc created https://github.com/llvm/llvm-project/pull/134943 The driver only ever looks for the latter. ___ llvm-branch-commits mailing list llvm-branch-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-br

[llvm-branch-commits] gn build: Enable check-hwasan on aarch64 Linux. (PR #134944)

https://github.com/pcc created https://github.com/llvm/llvm-project/pull/134944 None ___ llvm-branch-commits mailing list llvm-branch-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits

[llvm-branch-commits] Change python to python3 in some shebangs. (PR #134945)

https://github.com/pcc created https://github.com/llvm/llvm-project/pull/134945 None ___ llvm-branch-commits mailing list llvm-branch-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits

[llvm-branch-commits] Add pointer field protection feature. (PR #133538)

@@ -1215,6 +1215,29 @@ typedef __char32_t char32_t; #define _LIBCPP_HAS_EXPLICIT_THIS_PARAMETER 0 # endif +# if __has_feature(pointer_field_protection) +// Force a class to be non-standard layout by giving it two bases with the same +// type. This is useful when structur

[llvm-branch-commits] Add pointer field protection feature. (PR #133538)

https://github.com/pcc commented: > in libc++ we have a pre-commit CI so this feature should be tested in our CI, > if you need help with that, best reach out to us on Discord. However I think > we first need to look at how we can properly integrate this in libc++. Sure, I will get in touch on

[llvm-branch-commits] Add pointer field protection feature. (PR #133538)

@@ -1215,6 +1215,29 @@ typedef __char32_t char32_t; #define _LIBCPP_HAS_EXPLICIT_THIS_PARAMETER 0 # endif +# if __has_feature(pointer_field_protection) pcc wrote: Makes sense, will do. https://github.com/llvm/llvm-project/pull/133538 __

[llvm-branch-commits] Add pointer field protection feature. (PR #133538)

https://github.com/pcc edited https://github.com/llvm/llvm-project/pull/133538 ___ llvm-branch-commits mailing list llvm-branch-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits

[llvm-branch-commits] ELF: Remove lock from MTE global relocation handling code. (PR #135123)

https://github.com/pcc created https://github.com/llvm/llvm-project/pull/135123 This lock is unnecessary because we can add the relocations to shards and let them be sorted later. ___ llvm-branch-commits mailing list llvm-branch-commits@lists.llvm.or

[llvm-branch-commits] AArch64: Relax x16/x17 constraint on AUT in certain cases. (PR #132857)

https://github.com/pcc updated https://github.com/llvm/llvm-project/pull/132857 ___ llvm-branch-commits mailing list llvm-branch-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits

[llvm-branch-commits] [libcxx] libcxx: In gdb test detect execute_mi with feature check instead of version check. (PR #132291)

https://github.com/pcc updated https://github.com/llvm/llvm-project/pull/132291 >From 89ce369ab9b49b8c23a87ad0a888002dd85c094c Mon Sep 17 00:00:00 2001 From: Peter Collingbourne Date: Thu, 20 Mar 2025 15:12:39 -0700 Subject: [PATCH 1/2] Format Created using spr 1.3.6-beta.1 --- libcxx/test/lib

[llvm-branch-commits] ELF: Only rewrite non-preemptible IFUNCs to IPLT functions if a non-IRELATIVE relocation is needed. (PR #133531)

pcc wrote: > This patch has a few problems > > * The check in `processAux` was moved to the wrong place (it will never get > hit because this is after we deal with all symbols not defined locally). This > patch moves it to approximately the right place but will need some logic > changes to `i

[llvm-branch-commits] AArch64: Relax x16/x17 constraint on AUT in certain cases. (PR #132857)

https://github.com/pcc updated https://github.com/llvm/llvm-project/pull/132857 ___ llvm-branch-commits mailing list llvm-branch-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits

[llvm-branch-commits] [compiler-rt] compiler-rt: Introduce runtime functions for emulated PAC. (PR #133530)

https://github.com/pcc updated https://github.com/llvm/llvm-project/pull/133530 >From b37a44fff650b06eda249060277d0c007226cad2 Mon Sep 17 00:00:00 2001 From: Peter Collingbourne Date: Thu, 3 Apr 2025 21:51:44 -0700 Subject: [PATCH] Fix CMake build Created using spr 1.3.6-beta.1 --- compiler-rt

[llvm-branch-commits] Extract SipHash implementation into a header. (PR #134197)

https://github.com/pcc updated https://github.com/llvm/llvm-project/pull/134197 ___ llvm-branch-commits mailing list llvm-branch-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits

[llvm-branch-commits] Extract SipHash implementation into a header. (PR #134197)

https://github.com/pcc updated https://github.com/llvm/llvm-project/pull/134197 ___ llvm-branch-commits mailing list llvm-branch-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits

[llvm-branch-commits] ELF: Only rewrite non-preemptible IFUNCs to IPLT functions if a non-IRELATIVE relocation is needed. (PR #133531)

https://github.com/pcc updated https://github.com/llvm/llvm-project/pull/133531 ___ llvm-branch-commits mailing list llvm-branch-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits

[llvm-branch-commits] [lld] ELF: Only rewrite non-preemptible IFUNCs to IPLT functions if a non-IRELATIVE relocation is needed. (PR #133531)

https://github.com/pcc updated https://github.com/llvm/llvm-project/pull/133531 >From 96e7da9a083888683c2ba00d97f886fd748ea10b Mon Sep 17 00:00:00 2001 From: Peter Collingbourne Date: Wed, 9 Apr 2025 20:30:57 -0700 Subject: [PATCH] Undo unnecessary change Created using spr 1.3.6-beta.1 --- lld

[llvm-branch-commits] [lld] ELF: Only rewrite non-preemptible IFUNCs to IPLT functions if a non-IRELATIVE relocation is needed. (PR #133531)

pcc wrote: > I’m worried about the added complexity of ifunc and the extra parameter in > isStaticLinkTimeConstant, a key component of relocation scanning where > performance is critical. (Our scanning process is already noticeably slower > than mold’s, and these factors are contributing to th

[llvm-branch-commits] Add pointer field protection feature. (PR #133538)

@@ -84,7 +84,7 @@ _LIBCPP_PUSH_MACROS _LIBCPP_BEGIN_NAMESPACE_STD template */> -class _LIBCPP_TEMPLATE_VIS vector { +class _LIBCPP_TEMPLATE_VIS vector _LIBCPP_MAYBE_FORCE_NONSTANDARD_LAYOUT { pcc wrote: The intent would be that the user builds libc++.a with

[llvm-branch-commits] [libcxx] libcxx: In gdb test detect execute_mi with feature check instead of version check. (PR #132291)

https://github.com/pcc updated https://github.com/llvm/llvm-project/pull/132291 >From 89ce369ab9b49b8c23a87ad0a888002dd85c094c Mon Sep 17 00:00:00 2001 From: Peter Collingbourne Date: Thu, 20 Mar 2025 15:12:39 -0700 Subject: [PATCH 1/2] Format Created using spr 1.3.6-beta.1 --- libcxx/test/lib

[llvm-branch-commits] [libcxx] libcxx: In gdb test detect execute_mi with feature check instead of version check. (PR #132291)

https://github.com/pcc updated https://github.com/llvm/llvm-project/pull/132291 >From 89ce369ab9b49b8c23a87ad0a888002dd85c094c Mon Sep 17 00:00:00 2001 From: Peter Collingbourne Date: Thu, 20 Mar 2025 15:12:39 -0700 Subject: [PATCH 1/2] Format Created using spr 1.3.6-beta.1 --- libcxx/test/lib

[llvm-branch-commits] ELF: Remove lock from MTE global relocation handling code. (PR #135123)

https://github.com/pcc updated https://github.com/llvm/llvm-project/pull/135123 ___ llvm-branch-commits mailing list llvm-branch-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits

[llvm-branch-commits] ELF: Remove lock from MTE global relocation handling code. (PR #135123)

https://github.com/pcc updated https://github.com/llvm/llvm-project/pull/135123 ___ llvm-branch-commits mailing list llvm-branch-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits

[llvm-branch-commits] [libcxx] libcxx: In gdb test detect execute_mi with feature check instead of version check. (PR #132291)

https://github.com/pcc updated https://github.com/llvm/llvm-project/pull/132291 >From 89ce369ab9b49b8c23a87ad0a888002dd85c094c Mon Sep 17 00:00:00 2001 From: Peter Collingbourne Date: Thu, 20 Mar 2025 15:12:39 -0700 Subject: [PATCH 1/2] Format Created using spr 1.3.6-beta.1 --- libcxx/test/lib

[llvm-branch-commits] [compiler-rt] compiler-rt: Introduce runtime functions for emulated PAC. (PR #133530)

https://github.com/pcc edited https://github.com/llvm/llvm-project/pull/133530 ___ llvm-branch-commits mailing list llvm-branch-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits

[llvm-branch-commits] compiler-rt: Introduce runtime functions for emulated PAC. (PR #133530)

@@ -0,0 +1,115 @@ +#include pcc wrote: Correct, I forgot to add one. Will add. https://github.com/llvm/llvm-project/pull/133530 ___ llvm-branch-commits mailing list llvm-branch-commits@lists.llvm.org https://lists.llv

[llvm-branch-commits] ELF: Add support for R_AARCH64_INST32 relocation. (PR #133534)

pcc wrote: > Apologies for the delay in responding, just come back from vacation. Not had > a chance to look through the Discourse posts yet, will do so this week. > > While it may seem a bit premature, would you be able to open an issue in the > AArch64 ABI (https://github.com/ARM-software/ab

[llvm-branch-commits] compiler-rt: Introduce runtime functions for emulated PAC. (PR #133530)

@@ -0,0 +1,7343 @@ +/* + * xxHash - Extremely Fast Hash algorithm + * Header File + * Copyright (C) 2012-2023 Yann Collet + * + * BSD 2-Clause License (https://www.opensource.org/licenses/bsd-license.php) pcc wrote: Okay, I will contact bo...@llvm.org about this

[llvm-branch-commits] [libcxx] libcxx: In gdb test detect execute_mi with feature check instead of version check. (PR #132291)

https://github.com/pcc updated https://github.com/llvm/llvm-project/pull/132291 >From 89ce369ab9b49b8c23a87ad0a888002dd85c094c Mon Sep 17 00:00:00 2001 From: Peter Collingbourne Date: Thu, 20 Mar 2025 15:12:39 -0700 Subject: [PATCH 1/2] Format Created using spr 1.3.6-beta.1 --- libcxx/test/lib

[llvm-branch-commits] [libcxx] libcxx: In gdb test detect execute_mi with feature check instead of version check. (PR #132291)

pcc wrote: That's just what spr does, it will be applied onto main when it lands. On Tue, Apr 8, 2025, 23:52 Nikolas Klauser ***@***.***> wrote: > It looks like your merge base is wrong. > > — > Reply to this email directly, view it on GitHub >

[llvm-branch-commits] [libcxx] libcxx: In gdb test detect execute_mi with feature check instead of version check. (PR #132291)

pcc wrote: Odd, if I go to https://github.com/llvm/llvm-project/pull/132291/files in an incognito tab it just looks like this to me and that's what would be applied. On Wed, Apr 9, 2025, 00:03 Nikolas Klauser ***@***.***> wrote: > Could you not use spr in that case? I can't see the diff as it w

[llvm-branch-commits] [libcxx] libcxx: In gdb test detect execute_mi with feature check instead of version check. (PR #132291)

pcc wrote: I guess `gdb.__dict__` may not correspond to the actual attributes on the object because GDB could start using a custom `tp_getattro` for that object, although that seems unlikely. I switched to checking the result of `getattr` which should be equivalent to checking whether `gdb.exe

[llvm-branch-commits] ELF: Do not rewrite IFUNC relocations to point to PLT if no GOT/PLT needed. (PR #133531)

pcc wrote: This patch has a few problems - The check in `processAux` was moved to the wrong place (it will never get hit because this is after we deal with all symbols not defined locally). This patch moves it to approximately the right place but will need some logic changes to `isStaticLinkTi

[llvm-branch-commits] [llvm] gn build: Add check-builtins target. (PR #134482)

https://github.com/pcc updated https://github.com/llvm/llvm-project/pull/134482 >From bc8dda56bcfadc6d7312b53313159a978d71f4fb Mon Sep 17 00:00:00 2001 From: Peter Collingbourne Date: Fri, 4 Apr 2025 22:10:52 -0700 Subject: [PATCH] Remove unnecessary code Created using spr 1.3.6-beta.1 --- ...

[llvm-branch-commits] [MTE] do not tag zero sized globals (PR #136020)

https://github.com/pcc approved this pull request. https://github.com/llvm/llvm-project/pull/136020 ___ llvm-branch-commits mailing list llvm-branch-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits

[llvm-branch-commits] LiveRangeShrink: Early exit when encountering a code motion barrier. (PR #136806)

https://github.com/pcc created https://github.com/llvm/llvm-project/pull/136806 Without this, we end up with quadratic behavior affecting functions with large numbers of code motion barriers, such as CFI jump tables. ___ llvm-branch-commits mailing l

[llvm-branch-commits] LiveRangeShrink: Early exit when encountering a code motion barrier. (PR #136806)

@@ -95,14 +95,24 @@ static MachineInstr *FindDominatedInstruction(MachineInstr &New, return Old; } +static bool isCodeMotionBarrier(MachineInstr &MI) { + return MI.hasUnmodeledSideEffects() && !MI.isPseudoProbe(); +} + /// Builds Instruction to its dominating order number

[llvm-branch-commits] [lld] ELF: Only rewrite non-preemptible IFUNCs to IPLT functions if a non-IRELATIVE relocation is needed. (PR #133531)

pcc wrote: > How does this work in the non-PIE (PDE) case when we take the address of an > ifunc and pass it to a function in a shared library, which then compares the > argument with its own global address take of the ifunc? > > For example: shared lib > > ``` > typedef void Fptr(void); > ex

[llvm-branch-commits] [lld] ELF: Only rewrite non-preemptible IFUNCs to IPLT functions if a non-IRELATIVE relocation is needed. (PR #133531)

pcc wrote: > I have some small reservations about using ifunc resolvers like this. Mostly > in that we are using a mechanism invented for a different purpose, and > relying on some specific linker behaviour to make this case work. > > This is similar to comments made in the Discourse post > ht

[llvm-branch-commits] [libcxx] libcxx: In gdb test detect execute_mi with feature check instead of version check. (PR #132291)

pcc wrote: Ping @ldionne https://github.com/llvm/llvm-project/pull/132291 ___ llvm-branch-commits mailing list llvm-branch-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits

[llvm-branch-commits] LiveRangeShrink: Early exit when encountering a code motion barrier. (PR #136806)

https://github.com/pcc edited https://github.com/llvm/llvm-project/pull/136806 ___ llvm-branch-commits mailing list llvm-branch-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits

[llvm-branch-commits] LiveRangeShrink: Early exit when encountering a code motion barrier. (PR #136806)

@@ -95,14 +95,24 @@ static MachineInstr *FindDominatedInstruction(MachineInstr &New, return Old; } +static bool isCodeMotionBarrier(MachineInstr &MI) { + return MI.hasUnmodeledSideEffects() && !MI.isPseudoProbe(); +} pcc wrote: Added a comment that descri

[llvm-branch-commits] LiveRangeShrink: Early exit when encountering a code motion barrier. (PR #136806)

https://github.com/pcc updated https://github.com/llvm/llvm-project/pull/136806 ___ llvm-branch-commits mailing list llvm-branch-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits

[llvm-branch-commits] LiveRangeShrink: Early exit when encountering a code motion barrier. (PR #136806)

https://github.com/pcc updated https://github.com/llvm/llvm-project/pull/136806 ___ llvm-branch-commits mailing list llvm-branch-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits

[llvm-branch-commits] AArch64: Relax x16/x17 constraint on AUT in certain cases. (PR #132857)

pcc wrote: @asl Ping https://github.com/llvm/llvm-project/pull/132857 ___ llvm-branch-commits mailing list llvm-branch-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits

[llvm-branch-commits] [llvm] gn build: Add check-builtins target. (PR #134482)

pcc wrote: > wow this is very messy, feels like there should be a better way to do this on > the CMake side Yeah, or maybe even in the tests themselves, maybe they should be using weak symbols for the builtins and return unsupported if the symbol is undefined at runtime. https://github.com/l

[llvm-branch-commits] Extract SipHash implementation into a header. (PR #134197)

https://github.com/pcc updated https://github.com/llvm/llvm-project/pull/134197 ___ llvm-branch-commits mailing list llvm-branch-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits

[llvm-branch-commits] [lld] ELF: Only rewrite non-preemptible IFUNCs to IPLT functions if a non-IRELATIVE relocation is needed. (PR #133531)

https://github.com/pcc updated https://github.com/llvm/llvm-project/pull/133531 >From 96e7da9a083888683c2ba00d97f886fd748ea10b Mon Sep 17 00:00:00 2001 From: Peter Collingbourne Date: Wed, 9 Apr 2025 20:30:57 -0700 Subject: [PATCH] Undo unnecessary change Created using spr 1.3.6-beta.1 --- lld

[llvm-branch-commits] [lld] ELF: Only rewrite non-preemptible IFUNCs to IPLT functions if a non-IRELATIVE relocation is needed. (PR #133531)

@@ -1964,6 +1979,26 @@ void elf::postScanRelocations(Ctx &ctx) { for (ELFFileBase *file : ctx.objectFiles) for (Symbol *sym : file->getLocalSymbols()) fn(*sym); + + // Now that we have checked all ifunc symbols for demotion to regular function + // symbols, move

[llvm-branch-commits] [lld] ELF: Only rewrite non-preemptible IFUNCs to IPLT functions if a non-IRELATIVE relocation is needed. (PR #133531)

@@ -42,6 +42,8 @@ void printTraceSymbol(const Symbol &sym, StringRef name); enum { NEEDS_GOT = 1 << 0, NEEDS_PLT = 1 << 1, + // True if this is an ifunc with a direct relocation that cannot be pcc wrote: Done https://github.com/llvm/llvm-project/pull/133

[llvm-branch-commits] [lld] ELF: Only rewrite non-preemptible IFUNCs to IPLT functions if a non-IRELATIVE relocation is needed. (PR #133531)

@@ -1761,6 +1761,9 @@ void RelocationBaseSection::computeRels() { llvm::sort(nonRelative, irelative, [&](auto &a, auto &b) { return std::tie(a.r_sym, a.r_offset) < std::tie(b.r_sym, b.r_offset); }); +llvm::sort(irelative, relocs.end(), [&](auto &a, auto &b) {

[llvm-branch-commits] [compiler-rt] compiler-rt: Introduce runtime functions for emulated PAC. (PR #133530)

https://github.com/pcc updated https://github.com/llvm/llvm-project/pull/133530 >From b37a44fff650b06eda249060277d0c007226cad2 Mon Sep 17 00:00:00 2001 From: Peter Collingbourne Date: Thu, 3 Apr 2025 21:51:44 -0700 Subject: [PATCH] Fix CMake build Created using spr 1.3.6-beta.1 --- compiler-rt

[llvm-branch-commits] [lld] ELF: Only rewrite non-preemptible IFUNCs to IPLT functions if a non-IRELATIVE relocation is needed. (PR #133531)

https://github.com/pcc updated https://github.com/llvm/llvm-project/pull/133531 >From 96e7da9a083888683c2ba00d97f886fd748ea10b Mon Sep 17 00:00:00 2001 From: Peter Collingbourne Date: Wed, 9 Apr 2025 20:30:57 -0700 Subject: [PATCH] Undo unnecessary change Created using spr 1.3.6-beta.1 --- lld

[llvm-branch-commits] [compiler-rt] compiler-rt: Introduce runtime functions for emulated PAC. (PR #133530)

https://github.com/pcc updated https://github.com/llvm/llvm-project/pull/133530 >From b37a44fff650b06eda249060277d0c007226cad2 Mon Sep 17 00:00:00 2001 From: Peter Collingbourne Date: Thu, 3 Apr 2025 21:51:44 -0700 Subject: [PATCH] Fix CMake build Created using spr 1.3.6-beta.1 --- compiler-rt

[llvm-branch-commits] [compiler-rt] compiler-rt: Introduce runtime functions for emulated PAC. (PR #133530)

https://github.com/pcc updated https://github.com/llvm/llvm-project/pull/133530 >From b37a44fff650b06eda249060277d0c007226cad2 Mon Sep 17 00:00:00 2001 From: Peter Collingbourne Date: Thu, 3 Apr 2025 21:51:44 -0700 Subject: [PATCH] Fix CMake build Created using spr 1.3.6-beta.1 --- compiler-rt

[llvm-branch-commits] Extract SipHash implementation into a header. (PR #134197)

https://github.com/pcc updated https://github.com/llvm/llvm-project/pull/134197 ___ llvm-branch-commits mailing list llvm-branch-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits

[llvm-branch-commits] AArch64: Relax x16/x17 constraint on AUT in certain cases. (PR #132857)

https://github.com/pcc updated https://github.com/llvm/llvm-project/pull/132857 ___ llvm-branch-commits mailing list llvm-branch-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits

[llvm-branch-commits] AArch64: Relax x16/x17 constraint on AUT in certain cases. (PR #132857)

https://github.com/pcc updated https://github.com/llvm/llvm-project/pull/132857 ___ llvm-branch-commits mailing list llvm-branch-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits

[llvm-branch-commits] LowerTypeTests: Fix quadratic complexity. (PR #135875)

https://github.com/pcc created https://github.com/llvm/llvm-project/pull/135875 Currently we have quadratic complexity in LowerTypeTests because ScopedSaveAliaseesAndUsed loops over all aliases for each disjoint set, and the number of aliases and number of disjoint sets is roughly proportional to

[llvm-branch-commits] LowerTypeTests: Fix quadratic complexity. (PR #135875)

https://github.com/pcc updated https://github.com/llvm/llvm-project/pull/135875 ___ llvm-branch-commits mailing list llvm-branch-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits

[llvm-branch-commits] LowerTypeTests: Fix quadratic complexity. (PR #135875)

https://github.com/pcc updated https://github.com/llvm/llvm-project/pull/135875 ___ llvm-branch-commits mailing list llvm-branch-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits

[llvm-branch-commits] [lld] ELF: Only rewrite non-preemptible IFUNCs to IPLT functions if a non-IRELATIVE relocation is needed. (PR #133531)

pcc wrote: The performance impact of this change on firefox-x64 on an M2 Ultra was ``` N Min MaxMedian AvgStddev x 2801 1.2972602 1.4316316 1.3621663 1.3620049 0.019557658 + 2801 1.2877738 1.4305345 1.3634474 1.36

[llvm-branch-commits] ELF: Add a -z glibc-228-compat flag for working around an old glibc bug. (PR #133532)

https://github.com/pcc created https://github.com/llvm/llvm-project/pull/133532 The -z glibc-228-compat flag is intended to be used for binaries utilizing IFUNCs which need to be compatible with glibc versions containing a bug that was fixed in commit b5c45e83753b27dc538dff2d55d4410c385cf3a4 whic

[llvm-branch-commits] compiler-rt: Introduce runtime functions for emulated PAC. (PR #133530)

https://github.com/pcc created https://github.com/llvm/llvm-project/pull/133530 The emulated PAC runtime functions emulate the ARMv8.3a pointer authentication instructions and are intended for use in heterogeneous testing environments. For more information, see the associated RFC: https://discour

[llvm-branch-commits] CodeGen: Optionally emit PAuth relocations as IRELATIVE relocations. (PR #133533)

https://github.com/pcc created https://github.com/llvm/llvm-project/pull/133533 This supports the following use cases: - ConstantPtrAuth expressions that are unrepresentable using standard PAuth relocations such as expressions involving an integer operand or deactivation symbols. - libc imple

[llvm-branch-commits] compiler-rt: Introduce runtime functions for emulated PAC. (PR #133530)

@@ -0,0 +1,115 @@ +#include + +#define XXH_INLINE_ALL +#define XXH_NO_STDLIB +#define XXH_memcpy __builtin_memcpy +#define XXH_memset __builtin_memset +#define XXH_memcmp __builtin_memcmp +#include "../xxhash.h" + +// EmuPAC implements runtime emulation of PAC instructions. If th

[llvm-branch-commits] Add pointer field protection feature. (PR #133538)

https://github.com/pcc created https://github.com/llvm/llvm-project/pull/133538 Pointer field protection is a use-after-free vulnerability mitigation that works by changing how data structures' pointer fields are stored in memory. For more information, see the RFC: https://discourse.llvm.org/t/rf

[llvm-branch-commits] AArch64: Relax x16/x17 constraint on AUT in certain cases. (PR #132857)

https://github.com/pcc updated https://github.com/llvm/llvm-project/pull/132857 ___ llvm-branch-commits mailing list llvm-branch-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits

[llvm-branch-commits] [libcxx] libcxx: In gdb test detect execute_mi with feature check instead of version check. (PR #132291)

https://github.com/pcc updated https://github.com/llvm/llvm-project/pull/132291 >From 89ce369ab9b49b8c23a87ad0a888002dd85c094c Mon Sep 17 00:00:00 2001 From: Peter Collingbourne Date: Thu, 20 Mar 2025 15:12:39 -0700 Subject: [PATCH] Format Created using spr 1.3.6-beta.1 --- libcxx/test/libcxx/

[llvm-branch-commits] [libcxx] libcxx: In gdb test detect execute_mi with feature check instead of version check. (PR #132291)

https://github.com/pcc updated https://github.com/llvm/llvm-project/pull/132291 >From 89ce369ab9b49b8c23a87ad0a888002dd85c094c Mon Sep 17 00:00:00 2001 From: Peter Collingbourne Date: Thu, 20 Mar 2025 15:12:39 -0700 Subject: [PATCH] Format Created using spr 1.3.6-beta.1 --- libcxx/test/libcxx/

[llvm-branch-commits] ELF: Do not rewrite IFUNC relocations to point to PLT if no GOT/PLT needed. (PR #133531)

https://github.com/pcc created https://github.com/llvm/llvm-project/pull/133531 This enables the use of IFUNC to implement custom relocation types, such as the PAuth relocation types that will be introduced in a subsequent pull request. TODO: - Add tests. - Fix broken tests. _

[llvm-branch-commits] ELF: Add support for R_AARCH64_INST32 relocation. (PR #133534)

https://github.com/pcc created https://github.com/llvm/llvm-project/pull/133534 The R_AARCH64_INST32 relocation type is to support deactivation symbols. For more information, see the RFC: https://discourse.llvm.org/t/rfc-deactivation-symbols/85556 TODO: - Agree on semantics and relocation type n

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