--- Log opened Sun May 18 00:00:46 2025
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02:39 < bitcoin-git> [bitcoin] luke-jr opened pull request #32547: Mining: Avoid copying template CBlocks (master...mining_avoid_block_copy) https://github.com/bitcoin/bitcoin/pull/32547
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05:21 < sipa> PaperSword: i don't think so
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06:47 < bitcoin-git> [bitcoin] hebasto opened pull request #32550: cmake: Add missed `SSE41_CXXFLAGS` (master...250518-sse41-flags) https://github.com/bitcoin/bitcoin/pull/32550
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08:24 < bitcoin-git> [bitcoin] hebasto opened pull request #32551: cmake: Remove `ENABLE_{SSE41,AVX2,X86_SHANI,ARM_SHANI}` from `bitcoin-build-config.h` (master...250518-crypto-macros) https://github.com/bitcoin/bitcoin/pull/32551
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08:51 < hebasto> sipa: laanwj: I'm trying to break compiling `sha256_sse4.cpp` using the `-mno-sse4` flag, but it still compiles. Does inline assembly indeed contain any SSE4-specific instructions?
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09:10 < sipa> hebasto: no, it uses assembly
09:10 < sipa> the compiler doesn't know or care what instruction it uses
09:11 < sipa> just passes them through to the assembler
09:11 < sipa> sha256_sse41.cpp does use sse4 intrinsics though, which require compilation for a target that has them enabled
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09:12 < hebasto> does it require a sse4 capable cpu?
09:13 < sipa> yes
09:13 < hebasto> I mean, assembly code
09:13 < sipa> to run, yes - to compile, no
09:14 < sipa> it requires an sse4 capable assembler, but given that it's almost 20 years ago, i'm pretty sure that all compiler suites we support have that
09:14 < hebasto> got it, thanks!
09:14 < gmaxwell> nothing requires any particular cpu to compile, but you meant that some of them (but not sha256_sse4.cpp) require a compiler with the intrinsics enabled. :P
09:16 < sipa> gmaxwell: (pedantry warning) it's not exactly true that compiler flags control available of the intrinsics directly... there are several intrinsics which always work, but get compiler more efficiently when the compiler is targetting hardware with certain capabilities
09:17 < hebasto> could one provide `-mno-...` flag to disable those intrinsics?
09:18 < gmaxwell> sipa: yeah in theory the compiler could always offer all intrinsics but just have poor performance when the relevant instruction sets aren't available.  Kinda funny to do it for some and not others.
09:19 < sipa> the pedantry warning was because the intrinsics which sha256_sse41.cpp (not sse4.cpp) uses specifically almost certainly only only work when targetting an sse 4.1 instruction set (enabled by -msse41)
09:33 < bitcoin-git> [bitcoin] hebasto opened pull request #32552: refactor: Remove workaround for resolved MSVC bug (master...250518-fixed-msvc) https://github.com/bitcoin/bitcoin/pull/32552
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10:17 < bitcoin-git> [bitcoin] hebasto closed pull request #32552: refactor: Remove workaround for resolved MSVC bug (master...250518-fixed-msvc) https://github.com/bitcoin/bitcoin/pull/32552
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12:08 < bitcoin-git> [bitcoin] achow101 opened pull request #32553: wallet: Fix logging of wallet version (master...wallet-log-minversion) https://github.com/bitcoin/bitcoin/pull/32553
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12:54 < bitcoin-git> [gui-qml] GBKS opened pull request #453: Change PageStack easing type to InOutCubic (main...feature/fix-pagestack-animation) https://github.com/bitcoin-core/gui-qml/pull/453
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14:39 < bitcoin-git> [bitcoin] l0rinc opened pull request #32554: RFC: bench: replace embedded raw block with configurable block generator (master...l0rinc/bench-block-generator) https://github.com/bitcoin/bitcoin/pull/32554
14:41 < hebasto> #proposedmeetingtopic project-related MSVC bug reports
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22:03 < bitcoin-git> [bitcoin] meghasurya07 opened pull request #32555: Comment Changes (master...patch-1) https://github.com/bitcoin/bitcoin/pull/32555
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22:42 < bitcoin-git> [bitcoin] maflcko closed pull request #32555: Comment Changes (master...patch-1) https://github.com/bitcoin/bitcoin/pull/32555
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23:27 < bitcoin-git> [bitcoin] meghasurya07 opened pull request #32556: bench: Add WalletMigration benchmark for legacy-to-descriptor wallet upgrade (master...patch-3) https://github.com/bitcoin/bitcoin/pull/32556
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23:30 < bitcoin-git> [bitcoin] meghasurya07 closed pull request #32556: bench: Add WalletMigration benchmark for legacy-to-descriptor wallet upgrade (master...patch-3) https://github.com/bitcoin/bitcoin/pull/32556
23:32 < bitcoin-git> [bitcoin] meghasurya07 opened pull request #32557: bench: Add WalletMigration benchmark for legacy-to-descriptor wallet upgrade (master...patch-4) https://github.com/bitcoin/bitcoin/pull/32557
23:42 < bitcoin-git> [bitcoin] achow101 closed pull request #32557: bench: Add WalletMigration benchmark for legacy-to-descriptor wallet upgrade (master...patch-4) https://github.com/bitcoin/bitcoin/pull/32557
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--- Log closed Mon May 19 00:00:47 2025