/ Check-in [cdff3af7]
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SQLite training in Houston TX on 2019-11-05 (details)
Part of the 2019 Tcl Conference

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Overview
Comment:Remove the column-cache from the code generator. The column-cache has been a persistent source of bugs for years and with recent improvements in the performance of OP_Column, it no longer provides a benefit. After the column cache is removed, the binary is almost 2KB smaller and the speed-check.sh performance test is over 3 million cycles faster.
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SHA3-256: cdff3af7bedc5ebea04bd9b5e2112d3db451a475c18c9a9ebd45f6f3a89a43cb
User & Date: drh 2018-08-04 20:30:55
Context
2018-08-06
01:21
Fix an overzealous assert() statement discovered by OSSFuzz. check-in: d9c9fe9f user: drh tags: trunk
2018-08-04
20:30
Remove the column-cache from the code generator. The column-cache has been a persistent source of bugs for years and with recent improvements in the performance of OP_Column, it no longer provides a benefit. After the column cache is removed, the binary is almost 2KB smaller and the speed-check.sh performance test is over 3 million cycles faster. check-in: cdff3af7 user: drh tags: trunk
20:12
Remove a testcase() that is no longer reachable without the column cache. Provide an assert() to help prove that the testcase is no longer reachable. Closed-Leaf check-in: a500893b user: drh tags: omit-column-cache
15:28
Add test cases for the constant expression fix of the previous check-in. check-in: 95db5bd9 user: drh tags: trunk
Changes
Unified Diffs Side-by-Side Diffs Patch

Changes to src/build.c.

Changes to src/delete.c.

Changes to src/expr.c.

Changes to src/insert.c.

Changes to src/pragma.c.

Changes to src/select.c.

Changes to src/sqliteInt.h.

Changes to src/test1.c.

Changes to src/update.c.

Changes to src/vdbe.c.

Changes to src/vdbeInt.h.

Changes to src/vdbeapi.c.

Changes to src/vdbeaux.c.

Changes to src/vdbemem.c.

Changes to src/where.c.

Changes to src/wherecode.c.

Changes to test/btree02.test.