| commit | 57fe5c6df21c05af11435b2ed426a42ee3345298 | |
| author | Richard Henderson <richard.henderson@linaro.org> | |
| Thu, 26 Aug 2021 19:04:46 +0000 (26 12:04 -0700) | ||
| committer | Richard Henderson <richard.henderson@linaro.org> | |
| Fri, 29 Oct 2021 03:55:07 +0000 (28 20:55 -0700) | ||
| tree | ad89dde9ce08308cdc99f128fd71fc7e2f25286a | treesnapshot (tar.gz zip) |
| parent | 267c17e8252fd70b311871f3e936eb7cdf4abb51 | commitdiff |
tcg/optimize: Optimize sign extensions
Certain targets, like riscv, produce signed 32-bit results.
This can lead to lots of redundant extensions as values are
manipulated.
Begin by tracking only the obvious sign-extensions, and
converting them to simple copies when possible.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Certain targets, like riscv, produce signed 32-bit results.
This can lead to lots of redundant extensions as values are
manipulated.
Begin by tracking only the obvious sign-extensions, and
converting them to simple copies when possible.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
| tcg/optimize.c | diffblobblamehistory |