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Paul E. Murphy 773039ed5c cmd/compile/internal/ssa: on PPC64, merge (CMPconst [0] (op ...)) more aggressively
Generate the CC version of many opcodes whose result is compared against
signed 0. The approach taken here works even if the opcode result is used in
multiple places too.

Add support for ADD, ADDconst, ANDN, SUB, NEG, CNTLZD, NOR conversions
to their CC opcode variant. These are the most commonly used variants.

Also, do not set clobberFlags of CNTLZD and CNTLZW, they do not clobber
flags.

This results in about 1% smaller text sections in kubernetes binaries,
and no regressions in the crypto benchmarks.

Change-Id: I9e0381944869c3774106bf348dead5ecb96dffda
Reviewed-on: https://go-review.googlesource.com/c/go/+/538636
Run-TryBot: Paul Murphy <murp@ibm.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Jayanth Krishnamurthy <jayanth.krishnamurthy@ibm.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com>
2023-11-13 22:12:32 +00:00
.github .github: issue template for telemetry proposals 2023-09-14 21:29:10 +00:00
api go/types, types2: implement Alias proposal (export API) 2023-11-13 20:18:45 +00:00
doc go/types, types2: implement Alias proposal (export API) 2023-11-13 20:18:45 +00:00
lib/time lib/time: update to 2023c/2023c 2023-05-03 20:14:11 +00:00
misc misc/wasm: silence Wasmtime 14 CLI warning 2023-11-02 21:23:37 +00:00
src cmd/compile/internal/ssa: on PPC64, merge (CMPconst [0] (op ...)) more aggressively 2023-11-13 22:12:32 +00:00
test cmd/compile/internal/ssa: on PPC64, merge (CMPconst [0] (op ...)) more aggressively 2023-11-13 22:12:32 +00:00
.gitattributes
.gitignore internal/platform,cmd/dist: export the list of supported platforms 2023-06-22 19:44:52 +00:00
codereview.cfg
CONTRIBUTING.md
go.env cmd/go: additional doc-inspired tests and bug fixes 2023-06-06 19:18:46 +00:00
LICENSE
PATENTS
README.md
SECURITY.md SECURITY.md: update the Reporting a Vulnerability link 2023-09-22 21:17:24 +00:00

The Go Programming Language

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